djvu | 1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d

Analysis

max time kernel
143s
max time network
124s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
23/04/2024, 10:12

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General

Target
1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
Size 815KB
Sample240423-l82b7sfd73
SHA256 1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d
MD5 1ce9afbce6d4a7e79c5ed7a4e0056421
SHA1 3710593f8a467f1e33a9e9547d236758b660e517
SHA512 c46f30e55652c69a1811eb2acc92395e229e3d3bfaaad25065c68115f8324b71a72b41c23b15b51655946ad76097e060a5739a93a69560fa5cee370229da5449
SSDEEP 12288:C3p9PLdaYTkS3V+Vev3FYExxtXwYPjMMyRaALBvTdVHRBELGrQu:CXZoIVt2ExxGYKtl3Hs6rQ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/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 17 IoCs

resource	yara_rule
behavioral2/memory/3396-3-0x0000000005F80000-0x000000000609B000-memory.dmp	family_djvu
behavioral2/memory/4468-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4468-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4468-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4468-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4468-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/404-39-0x0000000000400000-0x0000000000537000-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
1508	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-1-5-21-2718508534-2116753757-2794822388-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\86c63839-9657-4f1f-9ef8-c41d7357f362\\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe\" --AutoStart"	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.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
20	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3396 set thread context of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 4888 set thread context of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85

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
4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
404	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
404	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 3396 wrote to memory of 4468	3396	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	80
PID 4468 wrote to memory of 1508	4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	81
PID 4468 wrote to memory of 1508	4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	81
PID 4468 wrote to memory of 1508	4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	81
PID 4468 wrote to memory of 4888	4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	82
PID 4468 wrote to memory of 4888	4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	82
PID 4468 wrote to memory of 4888	4468	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	82
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85
PID 4888 wrote to memory of 404	4888	1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe	85

C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
"C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3396
- C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
  "C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\86c63839-9657-4f1f-9ef8-c41d7357f362" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1508
- - C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
    "C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4888
  - - C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
      "C:\Users\Admin\AppData\Local\Temp\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:404

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 e5122be38e5166cc4b0fd2a070767c6bdbe8e22dcfbecab9db76088fe35fe219
MD5 e23ea4aa84dd598b2ab7b9498cde893d
SHA1 98a5422e21b88f9a639f3ab959bc387a228536eb
SHA512 7e65dc4c2a353fb1e31d0831a0dffda85df8a834c63d36ee57233a9bbd2d2bee082795de27328a34edb47e4777f88a98cee352d229b611b32354c96ef01ba2e4
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 46e610df2438db6aeb0f7df4e5505a9beb212031f2138d6b62c9883a03d9e376
MD5 b642ba01d151488e16ee25d9c660ea89
SHA1 769a35e588e264e0b2767e557d25686303637daf
SHA512 5f93d1d640b5be3bb3ce6b4091f272062fe9d7ce9eda0bc450b227b5e1fc0ff04ab8e43950f4ce5e026b24934c99ea614794bf1ae463da6848961fbb25883636
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 e1d283039578bbe02078392ae2dac548ab37d0fb3b5c18894306ffbc1a415c66
MD5 d7d32b0417044ac820bc9b572f281cfe
SHA1 2ea7498e6aea0aaa5057d7f5d4e0f131d579b64e
SHA512 5ad98a28e4d19fd284cae29eedb81fe0034c1449660604a2a36de111838f2f288f9141fc5752287636de1b4019630fb7cb4a38cc12d945d59f2d95c649a2bae9
MD5 SHA1 SHA512

Submit Download

1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe

Path C:\Users\Admin\AppData\Local\86c63839-9657-4f1f-9ef8-c41d7357f362\1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d.exe
Size 815KB
SHA256 1e9e6311b43996bb0cadb3cc79034b2824b238fce64f09864118853cde77cd9d
MD5 1ce9afbce6d4a7e79c5ed7a4e0056421
SHA1 3710593f8a467f1e33a9e9547d236758b660e517
SHA512 c46f30e55652c69a1811eb2acc92395e229e3d3bfaaad25065c68115f8324b71a72b41c23b15b51655946ad76097e060a5739a93a69560fa5cee370229da5449
SSDEEP 12288:C3p9PLdaYTkS3V+Vev3FYExxtXwYPjMMyRaALBvTdVHRBELGrQu:CXZoIVt2ExxGYKtl3Hs6rQ
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/404-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/404-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-3-0x0000000005F80000-0x000000000609B000-memory.dmp

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memory/3396-1-0x0000000004640000-0x00000000046D8000-memory.dmp

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memory/4468-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4468-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4468-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4468-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4468-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4888-20-0x0000000004560000-0x00000000045F3000-memory.dmp

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