djvu | 0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18

Analysis

max time kernel
139s
max time network
135s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
29/04/2024, 16:09

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General

Target
0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
Size 702KB
Sample240429-tlztvsfb2w
SHA256 0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18
MD5 06a498b083913460422cf7b4ad1eeab9
SHA1 9fe5c80cf1e9c6d130997fc85546f93289cec113
SHA512 826f3f106346123a8d31bd693998dd38ca9ca8390d794144aed121a1a9d9eb5c24fa76a71a12d9cec869add11d3e52c020e51f40115f5d011cbb039ad41ddc9e
SSDEEP 12288:cYXfSpws0AnC3Sw3CJTffWPTLluz8+qVAQKh9mXiOEwxGMYwq0kfICJ3pxciHL:cYvSpjz1w3C1ffy2JqGdcXiOEw/Y3fI2
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgzq
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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/3024-2-0x0000000004A80000-0x0000000004B9B000-memory.dmp	family_djvu
behavioral2/memory/4292-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4292-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4292-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4292-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4292-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1196-37-0x0000000000400000-0x0000000000537000-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
4184	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-1-5-21-2994005945-4089876968-1367784197-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\15b2920c-f31c-43e3-bc74-c56cbb6678c2\\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe\" --AutoStart"	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.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
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 1200 set thread context of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.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
4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
1196	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
1196	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 3024 wrote to memory of 4292	3024	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	82
PID 4292 wrote to memory of 4184	4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	83
PID 4292 wrote to memory of 4184	4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	83
PID 4292 wrote to memory of 4184	4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	83
PID 4292 wrote to memory of 1200	4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	84
PID 4292 wrote to memory of 1200	4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	84
PID 4292 wrote to memory of 1200	4292	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	84
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87
PID 1200 wrote to memory of 1196	1200	0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe	87

C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
"C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
  "C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4292
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\15b2920c-f31c-43e3-bc74-c56cbb6678c2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4184
- - C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
    "C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1200
  - - C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
      "C:\Users\Admin\AppData\Local\Temp\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1196

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 aca25e4e2e95b6a4dfe19c8d379ebbc4ff90578cd831ea9472d4ec7f98088360
MD5 9688a03006b5f30108bcae0f1167f8ae
SHA1 43c03dbd87ebd12aa26a47e119120f13cfdd602a
SHA512 9c74f856ea86aa074025cd665074c1591af9b2fdab348867adb7be9cb08121a8bdfb9e541383e730bac6842a039bc34e93cdbb5dd5f3632c4572a6ca483421b9
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 05bc59ec468ccfbd471568397a10491a857d6dbd5093f72c708ed113ac6394c7
MD5 28e776da63417c5552ec635cb91df287
SHA1 f8fec49b76b1d42e4c63909df1568f43bb86eb9b
SHA512 95b12cc8019fd55eb113e90538a9152059b151a741caff380e1f1ec82ed32a237bfb312ab234a4a0a4221bd4bfccd699c77df2f1cb1aa9bb1315c994495065f9
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 aca68e8dec6e78823ef6f7e6e6e9e6d56428e7ee9df1feea5a7c7636f68c605e
MD5 6f5b9ec0769311504e08202cd924b99c
SHA1 cddfc1933d00390dd4333aa259d7bcb0f9c54b36
SHA512 67575855c7cc44afe76808e92396c3d59a443b965a296199d31d9b5a965858501b4d640e7096fee9043dd1d2b3459bf4c21add43f07604855e5d4ff49908ff28
MD5 SHA1 SHA512

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0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe

Path C:\Users\Admin\AppData\Local\15b2920c-f31c-43e3-bc74-c56cbb6678c2\0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18.exe
Size 702KB
SHA256 0f1f6df502df69cedaf9e026586d2329c9c1f39d574d47903487075e877dce18
MD5 06a498b083913460422cf7b4ad1eeab9
SHA1 9fe5c80cf1e9c6d130997fc85546f93289cec113
SHA512 826f3f106346123a8d31bd693998dd38ca9ca8390d794144aed121a1a9d9eb5c24fa76a71a12d9cec869add11d3e52c020e51f40115f5d011cbb039ad41ddc9e
SSDEEP 12288:cYXfSpws0AnC3Sw3CJTffWPTLluz8+qVAQKh9mXiOEwxGMYwq0kfICJ3pxciHL:cYvSpjz1w3C1ffy2JqGdcXiOEw/Y3fI2
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1196-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1196-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3024-1-0x0000000004900000-0x000000000499E000-memory.dmp

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memory/3024-2-0x0000000004A80000-0x0000000004B9B000-memory.dmp

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memory/4292-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4292-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4292-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4292-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4292-19-0x0000000000400000-0x0000000000537000-memory.dmp

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