djvu | 994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b

General

Target

994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
Size

761KB
MD5

cbc0fb83669b4e7e03caa5c74f06be9a
SHA1

72dfbdd5cdb7b3d4a856bfc5a57c437ff354cfbf
SHA256

994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b
SHA512

50aaad65599e7208e03fb41208f7c0c7e59b3320eafcf584c480f7bc3df819b72b1460006697050cf6ccd705c72e0349b5d11377782c6180a15f2961a3a857ee
SSDEEP

12288:jriKZ0glHC70fdkwte/TMM0GKBlaHRUwQEvjAQ1UAXOhPlsOMzGY3X:jrBZ0gE70dtughGWoRXjAachSOMzt

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes

extension
.qepi
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
payload_url
http://sdfjhuz.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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/1608-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1608-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4472-5-0x0000000004850000-0x000000000496B000-memory.dmp	family_djvu
behavioral2/memory/1608-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1608-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1608-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4876-35-0x0000000000400000-0x0000000000537000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\99442b33-0a1b-4d9b-83e3-ed86ad2e125d\\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe\" --AutoStart"	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.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.

flow	ioc
14	api.2ip.ua
15	api.2ip.ua
20	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4472 set thread context of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4160 set thread context of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
4876	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
4876	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 4472 wrote to memory of 1608	4472	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	89
PID 1608 wrote to memory of 2908	1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	90
PID 1608 wrote to memory of 2908	1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	90
PID 1608 wrote to memory of 2908	1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	90
PID 1608 wrote to memory of 4160	1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	91
PID 1608 wrote to memory of 4160	1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	91
PID 1608 wrote to memory of 4160	1608	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	91
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95
PID 4160 wrote to memory of 4876	4160	994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe	95

C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
"C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
  "C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\99442b33-0a1b-4d9b-83e3-ed86ad2e125d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2908
- - C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
    "C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4160
  - - C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe
      "C:\Users\Admin\AppData\Local\Temp\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
1KB

MD5
980db886f2cbf3110b71813f1c55cca9

SHA1
a574aa7b6f0ae88191d135161b0329202957aba3

SHA256
ca3b546e0b8ceb8c92416dc5081dbe1f5ea28c80fc867078c966c981138b7cf6

SHA512
52a238e4ae4351b9a8074032a909fdf7b86da856f6fb430eec3fa58b6745a83a57d9a3e1c91f718ea102c131fb34230ebcb9ae8e32d86f84e75168975329abca

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
7c7bc173b498c85a3ac9e85abc77fef9

SHA1
536d3dea6922da597fde84654a2a69a28839ae60

SHA256
acd5e4a7af387a547572719c2198b947cac5d99237f08fe3fa9a3fc500744c90

SHA512
0a0c13456e7e2db90ac917b8893761c1179b7c6ace500fe1a75f7b907e6a074f84bd98890a96fbc156cff2253c8624fdd21a8507dd56b914282a46aabef07558

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

Filesize
392B

MD5
00c86f24c6178c95bda912ff95722c89

SHA1
99be0f7d55ab5430b7d476318ef563b4a004daf1

SHA256
2e333ba8d7c2df48748b6e19a3781a9315cb31c07789a0b3284a866fcadc273c

SHA512
0b67a383ef32e0fed0ccb6a8d3f1834f385cf5e6d9aa3c11b10c7b45b9109325309e13834c6848f731503911fc9f770d396843d3835178279dd27a30d63fb775

Download Submit
C:\Users\Admin\AppData\Local\99442b33-0a1b-4d9b-83e3-ed86ad2e125d\994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b.exe

Filesize
761KB

MD5
cbc0fb83669b4e7e03caa5c74f06be9a

SHA1
72dfbdd5cdb7b3d4a856bfc5a57c437ff354cfbf

SHA256
994c5358406c1383ecd084dc860a5d01ec6cad18afa0fa200bbefb339031390b

SHA512
50aaad65599e7208e03fb41208f7c0c7e59b3320eafcf584c480f7bc3df819b72b1460006697050cf6ccd705c72e0349b5d11377782c6180a15f2961a3a857ee

Download Submit
memory/1608-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1608-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1608-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1608-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1608-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4472-5-0x0000000004850000-0x000000000496B000-memory.dmp

Filesize
1.1MB

Download
memory/4472-1-0x0000000002C50000-0x0000000002CE6000-memory.dmp

Filesize
600KB

Download
memory/4876-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4876-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads