djvu | dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
09/05/2024, 16:24

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
Size 740KB
Sample240509-twg2ssbb5s
SHA256 dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551
MD5 b86eed019b818f01edb52174e1833d2e
SHA1 1b87ee598e32eb4a613744957c009848e01f8534
SHA512 42631d9aa3de7d299c9ec50582f3ac3a6dde391efdb3c9254b22339174421b7748d727baee9112ecdcd0aa8bc06de812fd0d8eba358a6acfdd97f137567d7d7f
SSDEEP 12288:brs23vbApPYVnnTeveja+EE1oN/BlcD+hKNnybsOXcUI2F1nS/48haF5+JK:br5IPYVnqve++EEy/XcD+h4nOsOsaF1o
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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/3772-2-0x0000000004950000-0x0000000004A6B000-memory.dmp	family_djvu
behavioral2/memory/792-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/792-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/792-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/792-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/792-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3860-37-0x0000000000400000-0x0000000000537000-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
2332	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-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\cf4006af-dbf8-45b0-b91b-91a12d7def26\\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe\" --AutoStart"	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.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
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3772 set thread context of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 2340 set thread context of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.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
792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
3860	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
3860	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 3772 wrote to memory of 792	3772	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	82
PID 792 wrote to memory of 2332	792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	83
PID 792 wrote to memory of 2332	792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	83
PID 792 wrote to memory of 2332	792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	83
PID 792 wrote to memory of 2340	792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	84
PID 792 wrote to memory of 2340	792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	84
PID 792 wrote to memory of 2340	792	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	84
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87
PID 2340 wrote to memory of 3860	2340	dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe	87

C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
"C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3772
- C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
  "C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:792
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\cf4006af-dbf8-45b0-b91b-91a12d7def26" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2332
- - C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
    "C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2340
  - - C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
      "C:\Users\Admin\AppData\Local\Temp\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3860

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

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 105eea9a33d596e337feefb4a7b383cca557f1f293cd6b3452f1de9ff831ef3a
MD5 def160c037e814072af98d21913d3855
SHA1 3e8c1cfc541ade5c1083b9e376531b535074888d
SHA512 717e7d1471bae85c1fdeb86f1e3a7b5d2f6a0fcfceca98d66065bf549335cb8a6c2e0d562793bb343a53a9bbfd10eaa6a8524bde3219a448c7c43b036fa4b10a
MD5 SHA1 SHA512

Submit Download

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

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 a3a707503952bb0405bccd2bc400a9e6e24cab1cfab2b98f78ad59b1d5818941
MD5 c4bbcc227f9531245c6eb97021fb7960
SHA1 faf4fd7af9246df1f2d90e5808cefcaf2ec17859
SHA512 4b4daf00a6192e2e7635510e97c7ecdba1aaf6ef0362992ea1d154becef9b4c4e47daf4fd9774ad225df1ba6ce8132acadc84ee2a1e8c6abd1eadcb36a33f243
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 1dd3ed5f0e767dc92759ddbcc4235b945c091b6c696145c00b7dd56df299f669
MD5 c0041f55bd36b52485f73920a8df91b3
SHA1 6b87b90145aeb07fe3b8861ea705e724c8cedd0a
SHA512 74458ca194674e8eca7a86a3ab7df57ebe63ad0f0b553fd00e1f18fa4ac54df9848bceaa1746acefca4b6340f20baa48484dcf44dbe2880369e73bf7831bb6df
MD5 SHA1 SHA512

Submit Download

dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe

Path C:\Users\Admin\AppData\Local\cf4006af-dbf8-45b0-b91b-91a12d7def26\dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551.exe
Size 740KB
SHA256 dee609868d4830575f68674e425725d194929038f8514bf5708289f500779551
MD5 b86eed019b818f01edb52174e1833d2e
SHA1 1b87ee598e32eb4a613744957c009848e01f8534
SHA512 42631d9aa3de7d299c9ec50582f3ac3a6dde391efdb3c9254b22339174421b7748d727baee9112ecdcd0aa8bc06de812fd0d8eba358a6acfdd97f137567d7d7f
SSDEEP 12288:brs23vbApPYVnnTeveja+EE1oN/BlcD+hKNnybsOXcUI2F1nS/48haF5+JK:br5IPYVnqve++EEy/XcD+h4nOsOsaF1o
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/792-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/792-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/792-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/792-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/792-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3772-2-0x0000000004950000-0x0000000004A6B000-memory.dmp

Download

memory/3772-1-0x0000000002D60000-0x0000000002DFB000-memory.dmp

Download

memory/3860-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3860-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download