djvu | d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd

Analysis

max time kernel
146s
max time network
129s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
05/05/2024, 11:52

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
Size 775KB
Sample240505-n1xp6acd93
SHA256 d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd
MD5 d556b0fcaae5f1e7593af0e33c47d7c0
SHA1 a53a5e5332c9a65db1a06b38fb5a3d8c17c5ccca
SHA512 8dd4df731dd6a447e1d1b8884f91f204b15d4c2441bb60ff07f46b1357ff8c5189a11d278d6d9d83fdc7e7e99129484cf275ce1d775c0ce6b4c6cd1b0f8be3c4
SSDEEP 12288:4ghSpJZO8pc8ub0y8+eSw/RDjYjQ1STxJg5a18G6C7e/12NtEB8XHPk:4gYOuS0y8V/RDcU1Ggxz+UcH8
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.qehu
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0868PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/3820-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral2/memory/2876-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2876-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2876-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2876-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2876-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/332-37-0x0000000000400000-0x0000000000537000-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
1408	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-1-5-21-734199974-1358367239-436541239-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\e82fdd0d-a04f-47d9-b26c-14a6b9b537ef\\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe\" --AutoStart"	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.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
5	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3820 set thread context of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 4920 set thread context of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.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
2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
332	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
332	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 3820 wrote to memory of 2876	3820	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	81
PID 2876 wrote to memory of 1408	2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	82
PID 2876 wrote to memory of 1408	2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	82
PID 2876 wrote to memory of 1408	2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	82
PID 2876 wrote to memory of 4920	2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	83
PID 2876 wrote to memory of 4920	2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	83
PID 2876 wrote to memory of 4920	2876	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	83
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86
PID 4920 wrote to memory of 332	4920	d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe	86

C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
"C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3820
- C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
  "C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2876
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\e82fdd0d-a04f-47d9-b26c-14a6b9b537ef" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1408
- - C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
    "C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4920
  - - C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
      "C:\Users\Admin\AppData\Local\Temp\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:332

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

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 939a7f0780a999f6f67b3a64c5811946b1ee416d1b9cd4dba9d52f1d6ab787f9
MD5 ed89e34d7155c15ba34b2e8037f052fb
SHA1 45f90ed3c32a2e46361e9f5af26c61827dcceabd
SHA512 507c61186bc691e01fdbba126bfb6eb69d8e83027e83b50604992ebc4233d37f1e37737f264b3951486f660e0add1bfca75274808ed7bc87481ab6ce72e6c160
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

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 1723a9572943c2911137070846d1945b763a68607b8d130315540d862db46123
MD5 044ac3e1a5479dfdc3475f39ff9e5552
SHA1 ce4940bd04ccd092a2d84eda811e983a014c276b
SHA512 f2f4fc65c6f0d4c3959328c131238bdd528ef739886b506dda98ef39faf450c5e1dc31aa73945d3b48fc9345207f0836d57278adca4c2acf835515e2341ca1e0
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 8a8220d38864b3205c98ca8295c3184889aead197132cfa6c8b85ba55897c23d
MD5 28cb3bfe1b1e85ca18e3e98de9769d00
SHA1 4ba700a9b4d1f4c6c1da1fdad8ab27b5e510a8e9
SHA512 9b0f32bb55d42ed47e99697ade37fec5848510e246dedd60675f23d67a1e1818fccaa0882b38252a1fb040b3e61f64be587e3659b188387c2b2b068595542a45
MD5 SHA1 SHA512

Submit Download

d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe

Path C:\Users\Admin\AppData\Local\e82fdd0d-a04f-47d9-b26c-14a6b9b537ef\d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd.exe
Size 775KB
SHA256 d709eecb407d038991e58e3d9634735af499169ff1fa2070f3a050c690543acd
MD5 d556b0fcaae5f1e7593af0e33c47d7c0
SHA1 a53a5e5332c9a65db1a06b38fb5a3d8c17c5ccca
SHA512 8dd4df731dd6a447e1d1b8884f91f204b15d4c2441bb60ff07f46b1357ff8c5189a11d278d6d9d83fdc7e7e99129484cf275ce1d775c0ce6b4c6cd1b0f8be3c4
SSDEEP 12288:4ghSpJZO8pc8ub0y8+eSw/RDjYjQ1STxJg5a18G6C7e/12NtEB8XHPk:4gYOuS0y8V/RDcU1Ggxz+UcH8
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/332-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/332-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2876-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2876-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2876-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2876-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2876-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3820-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Download

memory/3820-1-0x0000000003160000-0x0000000003201000-memory.dmp

Download