djvu | 95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
22/04/2024, 13:31

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General

Target
95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
Size 769KB
Sample240422-qsdnesbh87
SHA256 95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8
MD5 4f3d7a54e7cf3afc6c0168f50446b7a6
SHA1 74fdd17f8900c604533a81a38279f455d6aa0f2c
SHA512 49938de767964aec924a084bba143122a1dcd4245a5aefcf0f0e135f11c3cd0258d80edf1e71043cad383a07113c265a8afab8525a162426ff47784accffee6a
SSDEEP 12288:m+lPeKQtNecwI4LSzEhz/UFB+W1MCqk1hDkUUkJPX/5s9FL:m+lstNNwtLkE98FB+W6Cn/tWFL
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgzq
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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/3736-2-0x0000000004C80000-0x0000000004D9B000-memory.dmp	family_djvu
behavioral2/memory/2028-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2028-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2028-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2028-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2028-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2440-18-0x0000000003220000-0x00000000032B9000-memory.dmp	family_djvu
behavioral2/memory/3396-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3396-38-0x0000000000400000-0x0000000000537000-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
4544	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\\71277d8b-d59c-40f7-94ba-8f9988ac03b2\\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe\" --AutoStart"	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.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
5	api.2ip.ua
9	api.2ip.ua
17	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3736 set thread context of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 2440 set thread context of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.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
2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
3396	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
3396	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 3736 wrote to memory of 2028	3736	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	80
PID 2028 wrote to memory of 4544	2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	81
PID 2028 wrote to memory of 4544	2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	81
PID 2028 wrote to memory of 4544	2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	81
PID 2028 wrote to memory of 2440	2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	82
PID 2028 wrote to memory of 2440	2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	82
PID 2028 wrote to memory of 2440	2028	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	82
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85
PID 2440 wrote to memory of 3396	2440	95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe	85

C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
"C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3736
- C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
  "C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\71277d8b-d59c-40f7-94ba-8f9988ac03b2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4544
- - C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
    "C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2440
  - - C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
      "C:\Users\Admin\AppData\Local\Temp\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3396

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 9bb8590e2990ad24bd9b5ff8fe2d5a48b1d0dae2158de2156da2d43f475c7f58
MD5 0d98c95befdb5b91a7b42362e0b67403
SHA1 f471b191a3bf871062c62ca750e333f0616cf8d7
SHA512 9905e398c139e1dda2919142784a21d280d0305b25ea75b02935652ed46357f0089382cf9edfb02229e9d4d54a27fb1375b57956e440a660785e87519c996c65
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

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 2b5c882291883d93c08b2cbd52125e18d33ba10055150e33205c21512bff7aed
MD5 e8d71373d97851346a6a8fc634df74fd
SHA1 49edda1d578a0b86bebdf4445d8fc510e8832295
SHA512 8a0175749b1fc3a9180fdb9379e6ad8a842336eef1902e136d4a247ec133ce45086b87017fcbca05ccd6a13d8444c7438a6bfa9c6d85ddf3aa6f36b8a8c74c1c
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 f6e3e57a5ef86a10251046d59aef47fee103af4756caf738a337daf08a1621a8
MD5 0b16406dd6993c40c1a406b2f701ad6b
SHA1 c43017677f0c22d5daf2b01e079166ca57c55ebd
SHA512 fdaf9379b1f93ed3be36c55757145b48eb07256f74d733ee8f2fb907823e72778994531324e62097e3d0719c3b1518794fc7e46d636b76e144606dece1a8e73b
MD5 SHA1 SHA512

Submit Download

95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe

Path C:\Users\Admin\AppData\Local\71277d8b-d59c-40f7-94ba-8f9988ac03b2\95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8.exe
Size 769KB
SHA256 95911f6247275f4a7d99df7eae40d2f8d8e2a4895b068b6ee7f5fef7ea4cc6c8
MD5 4f3d7a54e7cf3afc6c0168f50446b7a6
SHA1 74fdd17f8900c604533a81a38279f455d6aa0f2c
SHA512 49938de767964aec924a084bba143122a1dcd4245a5aefcf0f0e135f11c3cd0258d80edf1e71043cad383a07113c265a8afab8525a162426ff47784accffee6a
SSDEEP 12288:m+lPeKQtNecwI4LSzEhz/UFB+W1MCqk1hDkUUkJPX/5s9FL:m+lstNNwtLkE98FB+W6Cn/tWFL
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2028-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2028-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2028-15-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2028-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2028-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2440-18-0x0000000003220000-0x00000000032B9000-memory.dmp

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memory/3396-20-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-21-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-33-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3396-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3736-1-0x00000000032E0000-0x0000000003381000-memory.dmp

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memory/3736-2-0x0000000004C80000-0x0000000004D9B000-memory.dmp

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