djvu | 9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439

Analysis

max time kernel
146s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25-06-2024 09:30

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General

Target

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
Size

839KB
MD5

71b44c9a55f3b40681f6a5524ca9821d
SHA1

a7b8eb80f4fd81445515b68aa7cf7f4fec4a0295
SHA256

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439
SHA512

a9568bc534c404bd9f13e52e86f4c23158e4cb117c31c25c26db3bad609148251e902f8f2c6d0b0ab3daebd988ae2eba305feeb1a9fc94bc0f44ea4712606492
SSDEEP

12288:oFLV3SQMC2KjSnCs/urQO4VivUI6q9ulGvxnrgJMKut3KENjEhQEOuV:iSQaCsgUI6grzt3K4EWlu

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test2/get.php

Attributes

extension
.waqa
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
payload_url
http://defgyma.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/abe121434ad837dd5bdd03878a14485820240531135509/34284d Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0875PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2900-2-0x00000000045C0000-0x00000000046DB000-memory.dmp	family_djvu
behavioral1/memory/1936-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1936-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1936-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1936-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1936-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1568-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

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:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2908 icacls.exe

pid	process
2908	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\5c636b64-226d-4b6a-b95a-1f53fe562c9c\\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe\" --AutoStart"	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

3 api.2ip.ua
4 api.2ip.ua
15 api.2ip.ua

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
15	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

description	pid	process	target process
PID 2900 set thread context of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 set thread context of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

pid	process
1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
1568	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
1568	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2900

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1936

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\5c636b64-226d-4b6a-b95a-1f53fe562c9c" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2908

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4080

C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
"C:\Users\Admin\AppData\Local\Temp\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1568

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize
1KB

MD5
2365869258df7a66a2121b802ca4afd9

SHA1
73acc30a2edeb9d6830de559bb8a74f35168135d

SHA256
d6b1932822bbd72a8e78c771717d992142348f67d625a42393719fefbe59b0ed

SHA512
795004bab536e128dbd81c188976d37c7b650efbfa5a80374df4c65a1049c27658f4620b7605583928eb167fcb69b4c99e4c8730c507b824a7bde9c7fb0e21f4

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Filesize
436B

MD5
1bfe0a81db078ea084ff82fe545176fe

SHA1
50b116f578bd272922fa8eae94f7b02fd3b88384

SHA256
5ba8817f13eee00e75158bad93076ab474a068c6b52686579e0f728fda68499f

SHA512
37c582f3f09f8d80529608c09041295d1644bcc9de6fb8c4669b05339b0dd870f9525abc5eed53ad06a94b51441275504bc943c336c5beb63b53460ba836ca8d

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Filesize
174B

MD5
c52dae0d3e670053d2bfff087e5233b6

SHA1
66b3664308905b49b7e714a4e1541c2100892a66

SHA256
50af3952c9a4c291dc7b3fd90122cae7b4f7972bb35fe2a55d6b6ed499642b89

SHA512
7e8d3ffdeb1b2b83f8675dd8c539b48c479e59b28cc1dd6f42377a19d01c1d84a7b479e139bbfe58849da857292204e741d6baed9044fd42996d299b02bb7933

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Filesize
170B

MD5
55c89b5ea10f7f5dd4baf2ae97e82ea3

SHA1
32391bfe02009fed9d46febd629bba7ea1968b2a

SHA256
ea82801d8029ae015cc82900a0eb01e79e457addc7816f16a953ce498d248684

SHA512
b99dcb0bf32da242d61e00b15f520818b88760f5b5633245e552dde38072871cf160becb103a6311aed46505db543f187da4c901ab0d669a149bd698c2bb8196

Download Submit
C:\Users\Admin\AppData\Local\5c636b64-226d-4b6a-b95a-1f53fe562c9c\9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
Filesize
839KB

MD5
71b44c9a55f3b40681f6a5524ca9821d

SHA1
a7b8eb80f4fd81445515b68aa7cf7f4fec4a0295

SHA256
9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439

SHA512
a9568bc534c404bd9f13e52e86f4c23158e4cb117c31c25c26db3bad609148251e902f8f2c6d0b0ab3daebd988ae2eba305feeb1a9fc94bc0f44ea4712606492

Download Submit
memory/1568-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1568-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1936-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1936-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1936-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1936-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1936-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2900-2-0x00000000045C0000-0x00000000046DB000-memory.dmp

Filesize
1.1MB

Download
memory/2900-1-0x0000000004440000-0x00000000044D9000-memory.dmp

Filesize
612KB

Download

description	pid	process	target process
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 2900 wrote to memory of 1936	2900	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1936 wrote to memory of 2908	1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	icacls.exe
PID 1936 wrote to memory of 2908	1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	icacls.exe
PID 1936 wrote to memory of 2908	1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	icacls.exe
PID 1936 wrote to memory of 4080	1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1936 wrote to memory of 4080	1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 1936 wrote to memory of 4080	1936	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe
PID 4080 wrote to memory of 1568	4080	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe	9cea3ad8914836b158f4a3494c1b3b3dadc93af4d9a560cbec22742302de5439.exe