strrat | 201483f282a58582d9a11ac56491bd74bd25caa0635987297d6cc985f4078bea

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
18-06-2024 09:35

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General

Target

Zilcorp_PayCheck.js
Size

415KB
MD5

b7bef63b1d36f38f696469ace03c61c4
SHA1

6354ac040b6fda031ebf37e90eae9eb68b97bd94
SHA256

201483f282a58582d9a11ac56491bd74bd25caa0635987297d6cc985f4078bea
SHA512

a94833b8df108d34f39c87377ab0f46a81774056e40e45f34e504c25ed7e99e647a4622b30be7096e526e1a359a69c99261f69805cc7e956d8bc4f865a3ffd45
SSDEEP

6144:XQ6gcED4sXas+CryilhnTUX5jcniqlSu+yxq3RKN24mR1V3JMV9DLC7:g688sXasSsUXiXEwgLcLC7

Score

10^/10

strrat discovery execution persistence stealer trojan

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation wscript.exe
Drops startup file 1 IoCs

Processes:

java.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lmdztpjqw.txt java.exe
Loads dropped DLL 1 IoCs

Processes:

java.exe

pid process

656 java.exe
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2972 icacls.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation	wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lmdztpjqw.txt	java.exe

pid	process
656	java.exe

pid	process
2972	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

java.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lmdztpjqw = "\"C:\\Users\\Admin\\AppData\\Roaming\\lmdztpjqw.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lmdztpjqw = "\"C:\\Users\\Admin\\AppData\\Roaming\\lmdztpjqw.txt\""	java.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

1748 schtasks.exe

pid	process
1748	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

wscript.exejavaw.exejava.execmd.exe

description	pid	process	target process
PID 1952 wrote to memory of 1664	1952	wscript.exe	javaw.exe
PID 1952 wrote to memory of 1664	1952	wscript.exe	javaw.exe
PID 1664 wrote to memory of 2972	1664	javaw.exe	icacls.exe
PID 1664 wrote to memory of 2972	1664	javaw.exe	icacls.exe
PID 1664 wrote to memory of 1512	1664	javaw.exe	java.exe
PID 1664 wrote to memory of 1512	1664	javaw.exe	java.exe
PID 1512 wrote to memory of 4800	1512	java.exe	cmd.exe
PID 1512 wrote to memory of 4800	1512	java.exe	cmd.exe
PID 1512 wrote to memory of 656	1512	java.exe	java.exe
PID 1512 wrote to memory of 656	1512	java.exe	java.exe
PID 4800 wrote to memory of 1748	4800	cmd.exe	schtasks.exe
PID 4800 wrote to memory of 1748	4800	cmd.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Zilcorp_PayCheck.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1952

C:\Program Files\Java\jre-1.8\bin\javaw.exe
"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\lmdztpjqw.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\system32\icacls.exe
C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
3⤵
- Modifies file permissions
PID:2972

C:\Program Files\Java\jre-1.8\bin\java.exe
"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\lmdztpjqw.txt"
3⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1512

C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\lmdztpjqw.txt"
4⤵
- Suspicious use of WriteProcessMemory
PID:4800

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\lmdztpjqw.txt"
5⤵
- Creates scheduled task(s)
PID:1748

C:\Program Files\Java\jre-1.8\bin\java.exe
"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\lmdztpjqw.txt"
4⤵
- Loads dropped DLL
PID:656

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Filesize
46B

MD5
3446318c96c2ed958ccdf9ef05c38338

SHA1
cd3dcf6ea18843e318481528019cca8a896fe42f

SHA256
a9cf98a0226abb7822c82314d36ffa240501e3635e5e7d17ec58fe6d464a06d4

SHA512
4af8100d799d0419953a62adaf313a98a44bb652c2da888e4a59f1b97459c5f40ba65517e794daeea02f9ea01eaf3a20c5f6bf268e363fbc8d71668ed83c1f8f

Download Submit
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna1051272342738082976.dll
Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2080292272-204036150-2159171770-1000\83aa4cc77f591dfc2374580bbd95f6ba_50b25195-d6c8-43bb-b2ca-a8bd616967ef
Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\lmdztpjqw.txt
Filesize
202KB

MD5
4c6cadc27c84e3c1cc0e0a02eedf70b4

SHA1
6744f248d56276d11eb2a4b72e0bf83b56088510

SHA256
ea567fa68562fae02b4ca07fb22a4aab17a2970b2083c4fe65a5bad3a9324dd4

SHA512
f14f1ef647b573fa016b5fb84130a18018814a00c31ce9f48dc2e701cbd693ca1655f2d76905f3cd89cdf84927708c5abefc58561991701e8028da0f927a6be3

Download Submit
C:\Users\Admin\lib\jna-5.5.0.jar
Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\lib\jna-platform-5.5.0.jar
Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
Filesize
4.1MB

MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\lib\system-hook-3.5.jar
Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
memory/656-249-0x0000017284E40000-0x0000017284E41000-memory.dmp

Filesize
4KB

Download
memory/1512-216-0x000001CCAB8C0000-0x000001CCAB8C1000-memory.dmp

Filesize
4KB

Download
memory/1664-107-0x0000024014DC0000-0x0000024014DD0000-memory.dmp

Filesize
64KB

Download
memory/1664-39-0x0000024014C80000-0x0000024014C90000-memory.dmp

Filesize
64KB

Download
memory/1664-28-0x0000024014C50000-0x0000024014C60000-memory.dmp

Filesize
64KB

Download
memory/1664-30-0x0000024014C60000-0x0000024014C70000-memory.dmp

Filesize
64KB

Download
memory/1664-35-0x0000024014C70000-0x0000024014C80000-memory.dmp

Filesize
64KB

Download
memory/1664-117-0x0000024014DF0000-0x0000024014E00000-memory.dmp

Filesize
64KB

Download
memory/1664-40-0x0000024014C90000-0x0000024014CA0000-memory.dmp

Filesize
64KB

Download
memory/1664-118-0x0000024014E00000-0x0000024014E10000-memory.dmp

Filesize
64KB

Download
memory/1664-44-0x0000024014CB0000-0x0000024014CC0000-memory.dmp

Filesize
64KB

Download
memory/1664-43-0x0000024014CA0000-0x0000024014CB0000-memory.dmp

Filesize
64KB

Download
memory/1664-54-0x0000024014CF0000-0x0000024014D00000-memory.dmp

Filesize
64KB

Download
memory/1664-53-0x0000024014BF0000-0x0000024014C00000-memory.dmp

Filesize
64KB

Download
memory/1664-52-0x0000024014CD0000-0x0000024014CE0000-memory.dmp

Filesize
64KB

Download
memory/1664-51-0x0000024014CE0000-0x0000024014CF0000-memory.dmp

Filesize
64KB

Download
memory/1664-50-0x0000024014CC0000-0x0000024014CD0000-memory.dmp

Filesize
64KB

Download
memory/1664-49-0x0000024014980000-0x0000024014BF0000-memory.dmp

Filesize
2.4MB

Download
memory/1664-56-0x0000024014C00000-0x0000024014C10000-memory.dmp

Filesize
64KB

Download
memory/1664-57-0x0000024014D00000-0x0000024014D10000-memory.dmp

Filesize
64KB

Download
memory/1664-64-0x0000024014D10000-0x0000024014D20000-memory.dmp

Filesize
64KB

Download
memory/1664-63-0x0000024014C30000-0x0000024014C40000-memory.dmp

Filesize
64KB

Download
memory/1664-62-0x0000024014C20000-0x0000024014C30000-memory.dmp

Filesize
64KB

Download
memory/1664-61-0x0000024014C10000-0x0000024014C20000-memory.dmp

Filesize
64KB

Download
memory/1664-68-0x0000024014C40000-0x0000024014C50000-memory.dmp

Filesize
64KB

Download
memory/1664-69-0x0000024014D20000-0x0000024014D30000-memory.dmp

Filesize
64KB

Download
memory/1664-76-0x0000024014D30000-0x0000024014D40000-memory.dmp

Filesize
64KB

Download
memory/1664-75-0x0000024014D40000-0x0000024014D50000-memory.dmp

Filesize
64KB

Download
memory/1664-74-0x0000024014C50000-0x0000024014C60000-memory.dmp

Filesize
64KB

Download
memory/1664-79-0x0000024014D50000-0x0000024014D60000-memory.dmp

Filesize
64KB

Download
memory/1664-78-0x0000024014C60000-0x0000024014C70000-memory.dmp

Filesize
64KB

Download
memory/1664-95-0x0000024014CC0000-0x0000024014CD0000-memory.dmp

Filesize
64KB

Download
memory/1664-94-0x0000024014CB0000-0x0000024014CC0000-memory.dmp

Filesize
64KB

Download
memory/1664-93-0x0000024014CA0000-0x0000024014CB0000-memory.dmp

Filesize
64KB

Download
memory/1664-91-0x0000024014D90000-0x0000024014DA0000-memory.dmp

Filesize
64KB

Download
memory/1664-90-0x0000024014DA0000-0x0000024014DB0000-memory.dmp

Filesize
64KB

Download
memory/1664-89-0x0000024014D80000-0x0000024014D90000-memory.dmp

Filesize
64KB

Download
memory/1664-87-0x0000024014C90000-0x0000024014CA0000-memory.dmp

Filesize
64KB

Download
memory/1664-86-0x0000024014C80000-0x0000024014C90000-memory.dmp

Filesize
64KB

Download
memory/1664-85-0x0000024014D70000-0x0000024014D80000-memory.dmp

Filesize
64KB

Download
memory/1664-84-0x0000024014D60000-0x0000024014D70000-memory.dmp

Filesize
64KB

Download
memory/1664-81-0x0000024014C70000-0x0000024014C80000-memory.dmp

Filesize
64KB

Download
memory/1664-100-0x0000024014CE0000-0x0000024014CF0000-memory.dmp

Filesize
64KB

Download
memory/1664-101-0x0000024014DB0000-0x0000024014DC0000-memory.dmp

Filesize
64KB

Download
memory/1664-102-0x0000024014960000-0x0000024014961000-memory.dmp

Filesize
4KB

Download
memory/1664-104-0x0000024014960000-0x0000024014961000-memory.dmp

Filesize
4KB

Download
memory/1664-105-0x0000024014CD0000-0x0000024014CE0000-memory.dmp

Filesize
64KB

Download
memory/1664-21-0x0000024014C10000-0x0000024014C20000-memory.dmp

Filesize
64KB

Download
memory/1664-106-0x0000024014CF0000-0x0000024014D00000-memory.dmp

Filesize
64KB

Download
memory/1664-109-0x0000024014D00000-0x0000024014D10000-memory.dmp

Filesize
64KB

Download
memory/1664-110-0x0000024014DD0000-0x0000024014DE0000-memory.dmp

Filesize
64KB

Download
memory/1664-112-0x0000024014D10000-0x0000024014D20000-memory.dmp

Filesize
64KB

Download
memory/1664-16-0x0000024014BF0000-0x0000024014C00000-memory.dmp

Filesize
64KB

Download
memory/1664-26-0x0000024014C40000-0x0000024014C50000-memory.dmp

Filesize
64KB

Download
memory/1664-36-0x0000024014960000-0x0000024014961000-memory.dmp

Filesize
4KB

Download
memory/1664-116-0x0000024014D20000-0x0000024014D30000-memory.dmp

Filesize
64KB

Download
memory/1664-121-0x0000024014D40000-0x0000024014D50000-memory.dmp

Filesize
64KB

Download
memory/1664-124-0x0000024014E10000-0x0000024014E20000-memory.dmp

Filesize
64KB

Download
memory/1664-123-0x0000024014D50000-0x0000024014D60000-memory.dmp

Filesize
64KB

Download
memory/1664-122-0x0000024014D30000-0x0000024014D40000-memory.dmp

Filesize
64KB

Download
memory/1664-126-0x0000024014E20000-0x0000024014E30000-memory.dmp

Filesize
64KB

Download
memory/1664-128-0x0000024014D60000-0x0000024014D70000-memory.dmp

Filesize
64KB

Download
memory/1664-129-0x0000024014D70000-0x0000024014D80000-memory.dmp

Filesize
64KB

Download
memory/1664-130-0x0000024014E30000-0x0000024014E40000-memory.dmp

Filesize
64KB

Download
memory/1664-133-0x0000024014DA0000-0x0000024014DB0000-memory.dmp

Filesize
64KB

Download
memory/1664-134-0x0000024014E40000-0x0000024014E50000-memory.dmp

Filesize
64KB

Download
memory/1664-132-0x0000024014D80000-0x0000024014D90000-memory.dmp

Filesize
64KB

Download
memory/1664-136-0x0000024014960000-0x0000024014961000-memory.dmp

Filesize
4KB

Download
memory/1664-141-0x0000024014960000-0x0000024014961000-memory.dmp

Filesize
4KB

Download
memory/1664-142-0x0000024014960000-0x0000024014961000-memory.dmp

Filesize
4KB

Download
memory/1664-147-0x0000024014D90000-0x0000024014DA0000-memory.dmp

Filesize
64KB

Download
memory/1664-149-0x0000024014960000-0x0000024014961000-memory.dmp

Filesize
4KB

Download
memory/1664-152-0x0000024014C00000-0x0000024014C10000-memory.dmp

Filesize
64KB

Download
memory/1664-159-0x0000024014C70000-0x0000024014C80000-memory.dmp

Filesize
64KB

Download
memory/1664-160-0x0000024014C80000-0x0000024014C90000-memory.dmp

Filesize
64KB

Download
memory/1664-158-0x0000024014C60000-0x0000024014C70000-memory.dmp

Filesize
64KB

Download
memory/1664-157-0x0000024014C50000-0x0000024014C60000-memory.dmp

Filesize
64KB

Download
memory/1664-156-0x0000024014C40000-0x0000024014C50000-memory.dmp

Filesize
64KB

Download
memory/1664-155-0x0000024014C30000-0x0000024014C40000-memory.dmp

Filesize
64KB

Download
memory/1664-154-0x0000024014C20000-0x0000024014C30000-memory.dmp

Filesize
64KB

Download
memory/1664-153-0x0000024014C10000-0x0000024014C20000-memory.dmp

Filesize
64KB

Download
memory/1664-151-0x0000024014BF0000-0x0000024014C00000-memory.dmp

Filesize
64KB

Download
memory/1664-150-0x0000024014CD0000-0x0000024014CE0000-memory.dmp

Filesize
64KB

Download
memory/1664-177-0x0000024014DC0000-0x0000024014DD0000-memory.dmp

Filesize
64KB

Download
memory/1664-180-0x0000024014DF0000-0x0000024014E00000-memory.dmp

Filesize
64KB

Download
memory/1664-179-0x0000024014DE0000-0x0000024014DF0000-memory.dmp

Filesize
64KB

Download
memory/1664-178-0x0000024014DD0000-0x0000024014DE0000-memory.dmp

Filesize
64KB

Download
memory/1664-176-0x0000024014DB0000-0x0000024014DC0000-memory.dmp

Filesize
64KB

Download
memory/1664-175-0x0000024014C90000-0x0000024014CA0000-memory.dmp

Filesize
64KB

Download
memory/1664-174-0x0000024014DA0000-0x0000024014DB0000-memory.dmp

Filesize
64KB

Download
memory/1664-173-0x0000024014D50000-0x0000024014D60000-memory.dmp

Filesize
64KB

Download
memory/1664-172-0x0000024014D70000-0x0000024014D80000-memory.dmp

Filesize
64KB

Download
memory/1664-171-0x0000024014D80000-0x0000024014D90000-memory.dmp

Filesize
64KB

Download
memory/1664-170-0x0000024014D20000-0x0000024014D30000-memory.dmp

Filesize
64KB

Download
memory/1664-169-0x0000024014CC0000-0x0000024014CD0000-memory.dmp

Filesize
64KB

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memory/1664-168-0x0000024014980000-0x0000024014BF0000-memory.dmp

Filesize
2.4MB

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memory/1664-22-0x0000024014C20000-0x0000024014C30000-memory.dmp

Filesize
64KB

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memory/1664-23-0x0000024014C30000-0x0000024014C40000-memory.dmp

Filesize
64KB

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memory/1664-18-0x0000024014C00000-0x0000024014C10000-memory.dmp

Filesize
64KB

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memory/1664-113-0x0000024014DE0000-0x0000024014DF0000-memory.dmp

Filesize
64KB

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memory/1664-4-0x0000024014980000-0x0000024014BF0000-memory.dmp

Filesize
2.4MB

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memory/1664-167-0x0000024014CE0000-0x0000024014CF0000-memory.dmp

Filesize
64KB

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memory/1664-166-0x0000024014CF0000-0x0000024014D00000-memory.dmp

Filesize
64KB

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memory/1664-165-0x0000024014CB0000-0x0000024014CC0000-memory.dmp

Filesize
64KB

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memory/1664-164-0x0000024014CA0000-0x0000024014CB0000-memory.dmp

Filesize
64KB

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