djvu | 111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f

Analysis

max time kernel
143s
max time network
123s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
26/04/2024, 15:47

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General

Target
111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
Size 806KB
Sample240426-s8b6msff91
SHA256 111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f
MD5 463782cef05afafd58637569802f0838
SHA1 2fe710c16176e529aa12e7f705a1fec52cb1de7d
SHA512 946d9508e98039c7269ee88ca7920f7d8a30aab5189557c2df061874f81ecf36a2c7dbbe9e71b4daa3d7d2efe5e4332b87fdd955c27c13fd57952ab27e792860
SSDEEP 12288:KiN7U9BqdqykCd7k5WvTcSMLhGgbrKiZNP+LNciQVOUYHtGqCBQAXYB:cBqzjI5W7cSMPRoRciQV/fqCBTYB
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/3976-2-0x0000000005FB0000-0x00000000060CB000-memory.dmp	family_djvu
behavioral2/memory/2084-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2084-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2084-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2084-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2084-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3836-37-0x0000000000400000-0x0000000000537000-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

pid	Process
436	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-1-5-21-3263309122-2820180308-3568046652-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\db37fd23-353d-424a-98d8-b325b8fad91f\\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe\" --AutoStart"	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.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
1	api.2ip.ua
2	api.2ip.ua
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3976 set thread context of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 2884 set thread context of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87

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
2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
3836	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
3836	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 3976 wrote to memory of 2084	3976	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	81
PID 2084 wrote to memory of 436	2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	82
PID 2084 wrote to memory of 436	2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	82
PID 2084 wrote to memory of 436	2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	82
PID 2084 wrote to memory of 2884	2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	83
PID 2084 wrote to memory of 2884	2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	83
PID 2084 wrote to memory of 2884	2084	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	83
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87
PID 2884 wrote to memory of 3836	2884	111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe	87

C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
"C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3976
- C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
  "C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2084
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\db37fd23-353d-424a-98d8-b325b8fad91f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:436
- - C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
    "C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2884
  - - C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
      "C:\Users\Admin\AppData\Local\Temp\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 8dfae75ff4c447e989ab690b07a4eff686c15a190fdcfe10a4b774eacd029a1f
MD5 069d0310ee29b489c012daa53bbb802d
SHA1 4d1a5fa55d576282b7f308cc8c1fe1ad07ffbc2b
SHA512 941a3257318a76ac1a939a2c64a9a93764a4f745fecab2ae5b9a7481c85f22f115cccc016917f94ff6e8beef62a6ce23b862bc7507bfe6355649f1baac2a0972
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 4050802ddc4bce22e410755a1d39ae44d09ecb603079d1fdf2918d3313914601
MD5 4d6189b87fdf38b383bd8a8fe3fe06e7
SHA1 b97a52330967703d04b03c7b4d790252a48c21ff
SHA512 efe6961b9786404e1ab075cdb9c921cf0f35432ab2bf6f3fe3d3c22ee1cf67c85e1d19e6f5f6b80dcd0512c534ea72618328bd0897429787ae65035ed9b106b8
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 38001e4fd2bc6604b2a300532a78dbd148acb18e0184674980358cf7da06a6b0
MD5 cab4c760cf0b5d26c43fa9e512aa147e
SHA1 07b0ff0ed29bca0bfeb8e6af02dea27c249e1bcf
SHA512 a0516b8583a5c9e107e4e57bf84484043f8804c96dc1906240c28e8b9fcf2bffbfc41bb90891fb01dd00d082144b3234f38206d1cb94d3ef5ce4708141f461cc
MD5 SHA1 SHA512

Submit Download

111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe

Path C:\Users\Admin\AppData\Local\db37fd23-353d-424a-98d8-b325b8fad91f\111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f.exe
Size 806KB
SHA256 111cee1f1487b2c42ccd697f912c5902f7de7554b1d05cb0f7c9be73c662e94f
MD5 463782cef05afafd58637569802f0838
SHA1 2fe710c16176e529aa12e7f705a1fec52cb1de7d
SHA512 946d9508e98039c7269ee88ca7920f7d8a30aab5189557c2df061874f81ecf36a2c7dbbe9e71b4daa3d7d2efe5e4332b87fdd955c27c13fd57952ab27e792860
SSDEEP 12288:KiN7U9BqdqykCd7k5WvTcSMLhGgbrKiZNP+LNciQVOUYHtGqCBQAXYB:cBqzjI5W7cSMPRoRciQV/fqCBTYB
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2084-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2084-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2084-19-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2084-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2084-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3836-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3976-2-0x0000000005FB0000-0x00000000060CB000-memory.dmp

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memory/3976-1-0x00000000041D0000-0x0000000004265000-memory.dmp

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