djvu | 32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7

Analysis

max time kernel
150s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
15/04/2024, 12:43

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General

Target
32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
Size 811KB
Sample240415-px85fsef45
SHA256 32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7
MD5 d26b5f117004ecb74c81c25dbda723a4
SHA1 00041f51fd5ccc7aa91eac8bfc9f5de6a5f1b129
SHA512 742abb55b16270e2f51ba4bad4fbbd926a09e6eb1a6e8ca1539132274f70dea525a66f72217d5256dbec6a13a846969fd480f6ed2ae74a3e3745fa93cd056be0
SSDEEP 12288:ni7/kZSkeL8jFpqHYV3DjdSXrSyb24fgRQjsMgd5pgI0iEVD+:nioSk97V/d8UkoQjsH5pgI0F
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.uazq
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0860PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/4760-2-0x0000000004CB0000-0x0000000004DCB000-memory.dmp	family_djvu
behavioral2/memory/4040-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4040-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4040-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4040-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4040-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3192-39-0x0000000000400000-0x0000000000537000-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
3184	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-1-5-21-8492748-3358837828-1435473090-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\be3e1ba5-88ee-410e-8462-9567f06d7f44\\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe\" --AutoStart"	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.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 4760 set thread context of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4404 set thread context of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83

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
4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
3192	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
3192	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4760 wrote to memory of 4040	4760	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	78
PID 4040 wrote to memory of 3184	4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	79
PID 4040 wrote to memory of 3184	4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	79
PID 4040 wrote to memory of 3184	4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	79
PID 4040 wrote to memory of 4404	4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	80
PID 4040 wrote to memory of 4404	4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	80
PID 4040 wrote to memory of 4404	4040	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	80
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83
PID 4404 wrote to memory of 3192	4404	32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe	83

C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
"C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4760
- C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
  "C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4040
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\be3e1ba5-88ee-410e-8462-9567f06d7f44" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3184
- - C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
    "C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4404
  - - C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
      "C:\Users\Admin\AppData\Local\Temp\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3192

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 8e9e392dc9b61b203b94259919869e3384fe634a6c76da3b817ecb1e5566c669
MD5 d1dd7a00ce73518932c811f701be1f45
SHA1 6ed624589a811394e17535336ff8fea311ce10cf
SHA512 885e1bdea6ac9f0823c13a7c5e0a5fca1e3b51d1fbdb049ca74e900ebb73ed536554db013055eb9404bc769b1b26bc14c4e96080c2fe588b234d3aab86547ea7
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

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 d998f00d492bd7aacdd679c36d29b0bf5884c3626f4e39b4e37b38bbaee966b4
MD5 20ed31faf4616bcbd742bb4d7f341e08
SHA1 9ba2797f2ddf24e8f2c09cd36c9f49b3c97f38af
SHA512 b332601ffdf29b201a29039500b4af2125e76c0e5e79d94fff0287cfb5cb8537d82385292c2b8abc79d8da2f773ddab093f6e681e3556a86c1270f7c334219bb
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 650c45ff7405a8a7489757515ce4ce3dc8ad67db85fcab6e39df9d1176c9c9fb
MD5 15d6b17e8f90bd80862b87dbdebe6f0a
SHA1 f4795252f0aa5ff8f502cdcfb8aaf02c925dc76c
SHA512 0963dc0663335957c4eb6f2c3f35d8479e883b730eccee7675a3adb7ce1e0956d82122a65540afcf3f5441f3f060128fcc626cd7d3dce345f46d72cd3113c5d0
MD5 SHA1 SHA512

Submit Download

32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe

Path C:\Users\Admin\AppData\Local\be3e1ba5-88ee-410e-8462-9567f06d7f44\32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7.exe
Size 811KB
SHA256 32cb9a1376e95ae1208d77394b6056af821b9bee230d1dad80b13a6f5b0c08d7
MD5 d26b5f117004ecb74c81c25dbda723a4
SHA1 00041f51fd5ccc7aa91eac8bfc9f5de6a5f1b129
SHA512 742abb55b16270e2f51ba4bad4fbbd926a09e6eb1a6e8ca1539132274f70dea525a66f72217d5256dbec6a13a846969fd480f6ed2ae74a3e3745fa93cd056be0
SSDEEP 12288:ni7/kZSkeL8jFpqHYV3DjdSXrSyb24fgRQjsMgd5pgI0iEVD+:nioSk97V/d8UkoQjsH5pgI0F
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3192-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3192-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4040-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4040-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4040-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4040-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4040-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4404-20-0x0000000004AE0000-0x0000000004B81000-memory.dmp

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memory/4760-2-0x0000000004CB0000-0x0000000004DCB000-memory.dmp

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memory/4760-1-0x0000000004C10000-0x0000000004CAD000-memory.dmp

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