djvu | 9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d

Analysis

max time kernel
142s
max time network
125s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
30/04/2024, 07:01

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General

Target
9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
Size 772KB
Sample240430-hteccaeh68
SHA256 9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d
MD5 35c46b6efca6eb1e2568ad499fecda7b
SHA1 3b79c4badb54b4cb0917b5ca14ccd8a3edb658a7
SHA512 dd639676a371df7ef9760660922793ca5b1d56ffdd2f5108a529a65d3659849f08891177025502d7483f508490db1d64fb6a422810ae15adf882e3a0f6bdbbf9
SSDEEP 12288:QjEjsKJ3RjznV3jRoXmqYXlm6wK4uxfViMoqe3fFJLbV5I+JzZksepXcVit/QwgB:HbN39Gmnhw4fIMevFH++nwdJt/gj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgjs
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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/456-1-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/456-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/456-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3932-4-0x0000000003850000-0x000000000396B000-memory.dmp	family_djvu
behavioral2/memory/456-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/456-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4712-40-0x0000000000400000-0x0000000000537000-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
1576	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-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\371eabb1-bc41-4cb4-91f1-7f360f92ac7b\\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe\" --AutoStart"	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.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 3932 set thread context of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3972 set thread context of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86

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
456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
4712	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
4712	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 3932 wrote to memory of 456	3932	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	80
PID 456 wrote to memory of 1576	456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	82
PID 456 wrote to memory of 1576	456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	82
PID 456 wrote to memory of 1576	456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	82
PID 456 wrote to memory of 3972	456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	83
PID 456 wrote to memory of 3972	456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	83
PID 456 wrote to memory of 3972	456	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	83
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86
PID 3972 wrote to memory of 4712	3972	9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe	86

C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
"C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
  "C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:456
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\371eabb1-bc41-4cb4-91f1-7f360f92ac7b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1576
- - C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
    "C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3972
  - - C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
      "C:\Users\Admin\AppData\Local\Temp\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4712

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 5658e1ab5b29339253916c10c43e7cabbb42319d0e387e9c4c5219160271f2aa
MD5 326a57c30f58487b650e3b28a41b2e70
SHA1 50da4b0a9c0542deef41f3ceb67fb000fba39f57
SHA512 e9da280aaf047f66eb574a50ec4080ad1d9318ae5a9e240ba4ffdc54a9b726fa52a66066b95588456b8046cf531e4f01ad0afd38c1af83b4de740aece51a878d
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 bebdc89217de2fa932d2ba968d5cbda07ce34db5fc68c22ae1618112a631d962
MD5 4a421f9e1d545933616e83f80d2cac9d
SHA1 35ad08a8840a3eb925b9241ea1d2da7ef0971885
SHA512 5a52ed9c0e4072f9226d1d78a0f627c1131e733b149cb093436d458250ce720f8ae79c4edb6e8c1067f6b1203d6b83e34dfd76add4058efe247cc69655820584
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 fbf6ec0cbc7ffc63c5e624a2484174898f2fdb74b504fec4102d39b1017db406
MD5 f43c86069ae77165e3cb24a5d08dff2a
SHA1 66435aa043d10fd179f5dd62cf607dc68fe52328
SHA512 baf41537dec2a81db3d2e6f2137988dfb291cccd9aff9b8de603abb978248c15e21400a3ac202ff1374da8ab0673e1dcfb6a7ad750e25f2d6ec8ca8eb8d01d07
MD5 SHA1 SHA512

Submit Download

9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe

Path C:\Users\Admin\AppData\Local\371eabb1-bc41-4cb4-91f1-7f360f92ac7b\9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d.exe
Size 772KB
SHA256 9830d705cc6e5f3448a0df0bfdb432dd899a196f866e8c12af283024658e5c0d
MD5 35c46b6efca6eb1e2568ad499fecda7b
SHA1 3b79c4badb54b4cb0917b5ca14ccd8a3edb658a7
SHA512 dd639676a371df7ef9760660922793ca5b1d56ffdd2f5108a529a65d3659849f08891177025502d7483f508490db1d64fb6a422810ae15adf882e3a0f6bdbbf9
SSDEEP 12288:QjEjsKJ3RjznV3jRoXmqYXlm6wK4uxfViMoqe3fFJLbV5I+JzZksepXcVit/QwgB:HbN39Gmnhw4fIMevFH++nwdJt/gj
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/456-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/456-1-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/456-19-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/456-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/456-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3932-3-0x0000000001E10000-0x0000000001EAC000-memory.dmp

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memory/3932-4-0x0000000003850000-0x000000000396B000-memory.dmp

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memory/3972-21-0x0000000001C70000-0x0000000001D06000-memory.dmp

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memory/4712-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-25-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4712-40-0x0000000000400000-0x0000000000537000-memory.dmp

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