stealc | 08acad39a18e3a380043252aaa097232c57f3e1b0e587d4fb88351b28698f942

Analysis

max time kernel
135s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
15-05-2024 03:42

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General

Target

0513304ac8178fa00bce7b395fa824d0.exe
Size

386KB
MD5

0513304ac8178fa00bce7b395fa824d0
SHA1

a10f045ae42a32cc223fb81d121a074f1cfb6085
SHA256

08acad39a18e3a380043252aaa097232c57f3e1b0e587d4fb88351b28698f942
SHA512

039619a83b493790bc47010daa09f657a597009a77d7639b22a37346ce9fb6fce83e906f4a68cc6575a33d9ccebe8cd1662d856de3c32cfe7c235316c4f39e9a
SSDEEP

6144:TcykrZfMtgEBXGx0Xy5gul0n4Qgf3ONjMMejZxxXx+0jTw3I:TcyktfW/tXZbgf3ONj7elxJw3I

Score

10^/10

stealc zgrat discovery rat spyware stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Detect ZGRat V1 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2056-129-0x0000019098400000-0x000001909BC34000-memory.dmp	family_zgrat_v1
behavioral2/memory/2056-130-0x00000190B73F0000-0x00000190B74FA000-memory.dmp	family_zgrat_v1
behavioral2/memory/2056-134-0x000001909D8E0000-0x000001909D904000-memory.dmp	family_zgrat_v1

Stealc
Stealc is an infostealer written in C++.
stealer stealc
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat
Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

u31o.1.exe0513304ac8178fa00bce7b395fa824d0.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	u31o.1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	0513304ac8178fa00bce7b395fa824d0.exe

Executes dropped EXE 2 IoCs

Processes:

u31o.0.exeu31o.1.exe

pid process

1888 u31o.0.exe
3832 u31o.1.exe
Loads dropped DLL 2 IoCs

Processes:

u31o.0.exe

pid process

1888 u31o.0.exe
1888 u31o.0.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

2420 3948 WerFault.exe 0513304ac8178fa00bce7b395fa824d0.exe
5072 1888 WerFault.exe u31o.0.exe

pid	pid_target	process	target process
2420	3948	WerFault.exe	0513304ac8178fa00bce7b395fa824d0.exe
5072	1888	WerFault.exe	u31o.0.exe

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

u31o.1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u31o.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u31o.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u31o.1.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

u31o.0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u31o.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u31o.0.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

u31o.0.exeSystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

pid	process
1888	u31o.0.exe
1888	u31o.0.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

description pid process

Token: SeDebugPrivilege 2056 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
Suspicious use of FindShellTrayWindow 7 IoCs

Processes:

u31o.1.exe

pid process

3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
Suspicious use of SendNotifyMessage 7 IoCs

Processes:

u31o.1.exe

pid process

3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe
3832 u31o.1.exe

description	pid	process
Token: SeDebugPrivilege	2056	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

pid	process
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe

pid	process
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe
3832	u31o.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

0513304ac8178fa00bce7b395fa824d0.exeu31o.1.exe

description	pid	process	target process
PID 3948 wrote to memory of 1888	3948	0513304ac8178fa00bce7b395fa824d0.exe	u31o.0.exe
PID 3948 wrote to memory of 1888	3948	0513304ac8178fa00bce7b395fa824d0.exe	u31o.0.exe
PID 3948 wrote to memory of 1888	3948	0513304ac8178fa00bce7b395fa824d0.exe	u31o.0.exe
PID 3948 wrote to memory of 3832	3948	0513304ac8178fa00bce7b395fa824d0.exe	u31o.1.exe
PID 3948 wrote to memory of 3832	3948	0513304ac8178fa00bce7b395fa824d0.exe	u31o.1.exe
PID 3948 wrote to memory of 3832	3948	0513304ac8178fa00bce7b395fa824d0.exe	u31o.1.exe
PID 3832 wrote to memory of 2056	3832	u31o.1.exe	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
PID 3832 wrote to memory of 2056	3832	u31o.1.exe	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

C:\Users\Admin\AppData\Local\Temp\0513304ac8178fa00bce7b395fa824d0.exe
"C:\Users\Admin\AppData\Local\Temp\0513304ac8178fa00bce7b395fa824d0.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3948

C:\Users\Admin\AppData\Local\Temp\u31o.0.exe
"C:\Users\Admin\AppData\Local\Temp\u31o.0.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1888 -s 1996
3⤵
- Program crash
PID:5072

C:\Users\Admin\AppData\Local\Temp\u31o.1.exe
"C:\Users\Admin\AppData\Local\Temp\u31o.1.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3832

C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
"C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3948 -s 1508
2⤵
- Program crash
PID:2420

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3948 -ip 3948
1⤵
PID:2832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1888 -ip 1888
1⤵
PID:4780

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\ProgramData\Are.docx
Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll
Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll
Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt
Filesize
3KB

MD5
26eb9dbd6d0a93bd9d17b3abfa4361ed

SHA1
9166c7a8de55767e335f98637d65d7632a759fa4

SHA256
756763d6ca61cda451f9779bb1bd17ed9f47a21238b5e7794a1107b26a05013e

SHA512
28118a77a51b7ebd82fec176325bdc78217dd1d3b22ec7b869953ca45cf9a2ab3cd898efb89ff76f5229b0219bdbf094b653653f3c9fa4b93679f699d4983e90

Download Submit
C:\Users\Admin\AppData\Local\Temp\u31o.0.exe
Filesize
239KB

MD5
431c601846123a7b4aa67d75e31a3dfd

SHA1
0704a6551c01b3b5744e7b743b33ffa5be2b4ced

SHA256
0a9eab89753e07a01b1c5e0197acefea9cc05e5f7829823f811e7aa1d7b817b7

SHA512
87a0f6eb99baf620b25216ba491f4891154224ad44ecbbe209c5189585d4cc8abea25ef7b34d78608f074c00ce76374fe49252d76b693521363aced52e4cda27

Download Submit
C:\Users\Admin\AppData\Local\Temp\u31o.1.exe
Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1888-91-0x0000000000400000-0x0000000000793000-memory.dmp

Filesize
3.6MB

Download
memory/1888-171-0x0000000000400000-0x0000000000793000-memory.dmp

Filesize
3.6MB

Download
memory/1888-159-0x0000000000400000-0x0000000000793000-memory.dmp

Filesize
3.6MB

Download
memory/1888-34-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2056-134-0x000001909D8E0000-0x000001909D904000-memory.dmp

Filesize
144KB

Download
memory/2056-139-0x00000190B7640000-0x00000190B7662000-memory.dmp

Filesize
136KB

Download
memory/2056-158-0x00000190BC990000-0x00000190BC9AE000-memory.dmp

Filesize
120KB

Download
memory/2056-157-0x00000190BCA30000-0x00000190BCAA6000-memory.dmp

Filesize
472KB

Download
memory/2056-156-0x00000190BC950000-0x00000190BC95C000-memory.dmp

Filesize
48KB

Download
memory/2056-129-0x0000019098400000-0x000001909BC34000-memory.dmp

Filesize
56.2MB

Download
memory/2056-130-0x00000190B73F0000-0x00000190B74FA000-memory.dmp

Filesize
1.0MB

Download
memory/2056-131-0x000001909D8A0000-0x000001909D8B0000-memory.dmp

Filesize
64KB

Download
memory/2056-132-0x000001909D8D0000-0x000001909D8DC000-memory.dmp

Filesize
48KB

Download
memory/2056-133-0x000001909D8C0000-0x000001909D8D4000-memory.dmp

Filesize
80KB

Download
memory/2056-153-0x00000190BD150000-0x00000190BD678000-memory.dmp

Filesize
5.2MB

Download
memory/2056-135-0x000001909D960000-0x000001909D96A000-memory.dmp

Filesize
40KB

Download
memory/2056-136-0x000001909D980000-0x000001909D9AA000-memory.dmp

Filesize
168KB

Download
memory/2056-137-0x00000190B7230000-0x00000190B72E2000-memory.dmp

Filesize
712KB

Download
memory/2056-138-0x00000190B7690000-0x00000190B76E0000-memory.dmp

Filesize
320KB

Download
memory/2056-151-0x00000190BCBC0000-0x00000190BCC22000-memory.dmp

Filesize
392KB

Download
memory/2056-140-0x000001909D970000-0x000001909D97A000-memory.dmp

Filesize
40KB

Download
memory/2056-144-0x00000190B76E0000-0x00000190B79E0000-memory.dmp

Filesize
3.0MB

Download
memory/2056-146-0x00000190BC0F0000-0x00000190BC0F8000-memory.dmp

Filesize
32KB

Download
memory/2056-147-0x00000190BBA30000-0x00000190BBA68000-memory.dmp

Filesize
224KB

Download
memory/2056-148-0x00000190BBA00000-0x00000190BBA0E000-memory.dmp

Filesize
56KB

Download
memory/2056-149-0x00000190BBA20000-0x00000190BBA28000-memory.dmp

Filesize
32KB

Download
memory/2056-150-0x00000190BC910000-0x00000190BC91A000-memory.dmp

Filesize
40KB

Download
memory/2056-152-0x00000190BC930000-0x00000190BC952000-memory.dmp

Filesize
136KB

Download
memory/3832-92-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3832-128-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3832-24-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3948-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3948-29-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3948-28-0x0000000000400000-0x000000000259D000-memory.dmp

Filesize
33.6MB

Download
memory/3948-1-0x0000000002690000-0x0000000002790000-memory.dmp

Filesize
1024KB

Download
memory/3948-2-0x0000000004200000-0x000000000426C000-memory.dmp

Filesize
432KB

Download