djvu | 9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf

General

Target

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
Size

771KB
MD5

31cffaa94c15c0d026dfff8e8392e9fa
SHA1

19b2797106e50009acfe14568017e6ed68d3eafc
SHA256

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf
SHA512

594152cd32cd86f7d262cd1ac32710c1076fc5a115728d2259a5b2c1f2a05954de116ff26d8eedc0632c4cf1c4574bedc55acb2c2ddd420d85a5adac3aec596b
SSDEEP

24576:mdnic41E6OBLdKf3R3GIc4Tzf9npTmR3D:Ik1osRb/nfZpTw

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vehu
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2304-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2924-4-0x0000000003ED0000-0x0000000003FEB000-memory.dmp	family_djvu
behavioral2/memory/2304-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4252-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4896 icacls.exe

pid	process
4896	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f9e09686-bc4f-427c-9be4-1982176a3be2\\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe\" --AutoStart"	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.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
8 api.2ip.ua
1 api.2ip.ua

flow	ioc
3	api.2ip.ua
8	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

description	pid	process	target process
PID 2924 set thread context of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 set thread context of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.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:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

pid	process
2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
4252	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
4252	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2924

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2304

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f9e09686-bc4f-427c-9be4-1982176a3be2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4896

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4048

C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
"C:\Users\Admin\AppData\Local\Temp\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4252

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

System Information Discovery

1

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
9e130b50184e39e32205c9dd3befee15

SHA1
150b8bfb3208d3a854996e02c1470d81530335b5

SHA256
7b5bd8bc8ac2cd655c212c4790e5d9a259046730a9f0bb51616b036da55d2c50

SHA512
3cf76690e692c874792fa99d6358ebdd3596bab33bede653067375fc7de617eb7f150f52e640d34b2d51dcbe39c5bb88381bdc0279054ab65d5f1492d89f648f

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
cbe094ded7d2345bb0e2ee13104e6138

SHA1
0c92ca8a99c8fb20bb1bc0402f3ca3424fa5cf4e

SHA256
30ba46d00d4b381c4fa2dee1b111ab7cf3aa072c0a990a3c462ae1e6e51f185f

SHA512
f16f5dc555e6f27d45b156e9b1af0261c4504f06010e85a310a4540b36d6e7b9113c283b492e092dc3438e39f3f42437d70eeb51cff20e570a98b4e69572de9c

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

MD5
2caea929d11d4acd33c12b17d25c9af6

SHA1
1a7a77531644a0a5a64e03c280763363d6714102

SHA256
d764a12b33d559ebb434ee2c231bde13de476471f24f940e4216856db549c992

SHA512
8d9217227e50f56de295d882de36722098a5d0487603e1d941d03212ffd0323c639ee1f11e16f642a11ec602ce14c09efc06d382d07f169cabf462cfe28f59ce

Download Submit
C:\Users\Admin\AppData\Local\f9e09686-bc4f-427c-9be4-1982176a3be2\9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
Filesize
771KB

MD5
31cffaa94c15c0d026dfff8e8392e9fa

SHA1
19b2797106e50009acfe14568017e6ed68d3eafc

SHA256
9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf

SHA512
594152cd32cd86f7d262cd1ac32710c1076fc5a115728d2259a5b2c1f2a05954de116ff26d8eedc0632c4cf1c4574bedc55acb2c2ddd420d85a5adac3aec596b

Download Submit
memory/2304-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2924-4-0x0000000003ED0000-0x0000000003FEB000-memory.dmp

Filesize
1.1MB

Download
memory/2924-1-0x00000000023A0000-0x0000000002441000-memory.dmp

Filesize
644KB

Download
memory/4252-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4252-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2924 wrote to memory of 2304	2924	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2304 wrote to memory of 4896	2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	icacls.exe
PID 2304 wrote to memory of 4896	2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	icacls.exe
PID 2304 wrote to memory of 4896	2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	icacls.exe
PID 2304 wrote to memory of 4048	2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2304 wrote to memory of 4048	2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 2304 wrote to memory of 4048	2304	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe
PID 4048 wrote to memory of 4252	4048	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe	9073d8ad686d22722cbbff01830b1dd6edfc741e6aa284a9f2515baefcc010bf.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads