djvu | 10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012

General

Target

10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
Size

806KB
MD5

501c7618c9c78150ad884c67d1bd044f
SHA1

b3c9b9c8af461d44f826d961a6e7b8c162542776
SHA256

10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012
SHA512

b55b81c6a982dfe90d8e75e3364982ea36f0e770d7a050951ce02c3bb00207538bb7e8e8b10dd614f58d6d5c7171dcac892d8eb7b28056d22a80c9660e89d261
SSDEEP

12288:WHdjBAKLmBS9B5hDstmvxDeTYXMM6+jHJCUBc9c6Eajx4o6atnwU:+LmM9PhDPovM6cMUBcfEaVd6mnwU

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3964-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3296-4-0x0000000003640000-0x000000000375B000-memory.dmp	family_djvu
behavioral1/memory/3964-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3964-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3964-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3964-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4524-21-0x0000000001CC0000-0x0000000001D61000-memory.dmp	family_djvu
behavioral1/memory/4760-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4760-40-0x0000000000400000-0x0000000000537000-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:

10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4384 icacls.exe

pid	process
4384	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cec875b2-9489-4499-9140-f4283e98c7be\\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe\" --AutoStart"	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.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

10 api.2ip.ua
1 api.2ip.ua
2 api.2ip.ua

flow	ioc
10	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

description	pid	process	target process
PID 3296 set thread context of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 set thread context of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.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:

10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

pid	process
3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
4760	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
4760	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
"C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3296

C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
"C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3964

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\cec875b2-9489-4499-9140-f4283e98c7be" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4384

C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
"C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4524

C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
"C:\Users\Admin\AppData\Local\Temp\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4760

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
44d87d695ae8e5bc46e021fe5c69c3b1

SHA1
f3721082b90536bc145ce40900ffa0a8f439ed3c

SHA256
3fdf46e976b3ec1dbd30c0ba73de6b051b2d0c32c43e1e9b5db29af05d1a0165

SHA512
d615aad7d482cc27e18dfaeb2f67747919a19818e5fb71a73f2e078afa7cf943e31bf3051d5d577f4b4415f1ad2a122e5da97a5969ca32bbd89d826e9c4f94cb

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
410B

MD5
74762dc904bf11020cb30109704bd487

SHA1
f03e37c09a44c6cf0129917eec3c81f2dbb5260c

SHA256
b9fcf5d75195a0ceb638f7673b4577f51e9cbc38f11de9b6c5ebf02efbae1d12

SHA512
09b5d881722329aa823be4156f86af0632f4308e3570f59d0b8646aedcaa277c46124e708d88d878eb6c90141d898947c3169c4f16a1be9a3d4617ea25ba3444

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
cc9616f36f960dc5a66cbf4ae4eea11a

SHA1
c1d6501a0fa45a4c411686186fc5a614e7e39f2c

SHA256
edd4a5e77c4bfaaa992b3b2a6d56fbf381a2374ed888481209a32081e085adc9

SHA512
6eeab128438c959d4b0da56380e432c37b92c74c60cacf765da17ed35892238487280dca6afab1ba72ce3f6a933d4529c8b299b87dd4d7802ad1441a0c643a9a

Download Submit
C:\Users\Admin\AppData\Local\cec875b2-9489-4499-9140-f4283e98c7be\10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
Filesize
806KB

MD5
501c7618c9c78150ad884c67d1bd044f

SHA1
b3c9b9c8af461d44f826d961a6e7b8c162542776

SHA256
10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012

SHA512
b55b81c6a982dfe90d8e75e3364982ea36f0e770d7a050951ce02c3bb00207538bb7e8e8b10dd614f58d6d5c7171dcac892d8eb7b28056d22a80c9660e89d261

Download Submit
memory/3296-1-0x0000000001AA0000-0x0000000001B3B000-memory.dmp

Filesize
620KB

Download
memory/3296-4-0x0000000003640000-0x000000000375B000-memory.dmp

Filesize
1.1MB

Download
memory/3964-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3964-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3964-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3964-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3964-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4524-21-0x0000000001CC0000-0x0000000001D61000-memory.dmp

Filesize
644KB

Download
memory/4760-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3296 wrote to memory of 3964	3296	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3964 wrote to memory of 4384	3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	icacls.exe
PID 3964 wrote to memory of 4384	3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	icacls.exe
PID 3964 wrote to memory of 4384	3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	icacls.exe
PID 3964 wrote to memory of 4524	3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3964 wrote to memory of 4524	3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 3964 wrote to memory of 4524	3964	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe
PID 4524 wrote to memory of 4760	4524	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe	10cce5006fb615425582562cfda1fba961f748adebfac272ec6641d9ff781012.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads