djvu | 86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6

General

Target

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
Size

711KB
MD5

1803415d0d0002e02718ff233a24c314
SHA1

c46f8bb5067f2deed66c7076a30ea7424088b6b0
SHA256

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6
SHA512

e5385320d5fe607a472f1825daf88a69bef9ae5a8c72c66610b08496eee3945f42378b269450b75ffa4509c0c3bd2c755bd80120def13d7378f9371b976dc5e5
SSDEEP

12288:OmfcP9o7lSbEDsof4fsHJV/CcbFb80A/qkMP8ZwIPFYL:OmEPnbEYVfncrAZxZwI+

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
behavioral1/memory/2216-2-0x00000000049C0000-0x0000000004ADB000-memory.dmp	family_djvu
behavioral1/memory/4980-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4980-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4980-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4980-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4980-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/520-37-0x0000000000400000-0x0000000000537000-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:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1940 icacls.exe

pid	process
1940	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\7eb3df81-be78-4c02-8060-4fd8723bc652\\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe\" --AutoStart"	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.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

5 api.2ip.ua
6 api.2ip.ua
21 api.2ip.ua

flow	ioc
5	api.2ip.ua
6	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

description	pid	process	target process
PID 2216 set thread context of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 set thread context of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.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:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

pid	process
4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
520	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
520	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2216

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4980

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\7eb3df81-be78-4c02-8060-4fd8723bc652" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1940

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1452

C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
"C:\Users\Admin\AppData\Local\Temp\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:520

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
7575c39a544943a68ce6e709c586005a

SHA1
4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

SHA256
4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

SHA512
abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

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
b1afea65e7e2b6faab90485b42131b09

SHA1
ba03b4fd2f93d6f0d66b9bef87e5b49109230f0d

SHA256
130aded94c21c434daf64fd6e105aba120d2e0b2ab77ac74e59cadfcb615713a

SHA512
3ba39416d8a3b473a4cb6a6fb4eea78ab1fe50e066ed41978af9669d82b0b1e887ec9bcb4aa2993f27a4bbe55369b909435757d9b619a2a578fe0e1e404b9b3a

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

MD5
0c208c4a1dbed98c4ee72e1aac92a568

SHA1
72e2b4c10aee1ce6c8d46a4036259f6860ebd0ac

SHA256
26436193e7bf73d0750c41a3cb4adcdb94d2df662fba24a393b2a81c63af903d

SHA512
029f9d39e14bfec816e44310f451369e703982e08dd4fc5cac6ab90fba1481e1bc33a30b09c1f49723084a254c83b4c6fc9fe2cfb45ca18b0e168fdb5e024b2e

Download Submit
C:\Users\Admin\AppData\Local\7eb3df81-be78-4c02-8060-4fd8723bc652\86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
Filesize
711KB

MD5
1803415d0d0002e02718ff233a24c314

SHA1
c46f8bb5067f2deed66c7076a30ea7424088b6b0

SHA256
86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6

SHA512
e5385320d5fe607a472f1825daf88a69bef9ae5a8c72c66610b08496eee3945f42378b269450b75ffa4509c0c3bd2c755bd80120def13d7378f9371b976dc5e5

Download Submit
memory/520-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/520-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2216-1-0x0000000002E80000-0x0000000002F15000-memory.dmp

Filesize
596KB

Download
memory/2216-2-0x00000000049C0000-0x0000000004ADB000-memory.dmp

Filesize
1.1MB

Download
memory/4980-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4980-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4980-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4980-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4980-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 2216 wrote to memory of 4980	2216	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 4980 wrote to memory of 1940	4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	icacls.exe
PID 4980 wrote to memory of 1940	4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	icacls.exe
PID 4980 wrote to memory of 1940	4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	icacls.exe
PID 4980 wrote to memory of 1452	4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 4980 wrote to memory of 1452	4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 4980 wrote to memory of 1452	4980	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe
PID 1452 wrote to memory of 520	1452	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe	86d141e0d9832840216d6c932553530d56c47a49961ac32f4578db76646357e6.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads