djvu | 04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d

Analysis

max time kernel
146s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
23/05/2024, 13:02

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
Size 807KB
Sample240523-p9tkjabe6w
SHA256 04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d
MD5 5c194a368d60360bd2ad862a93f2fca2
SHA1 f335b5c5ae86a6aca55a6465bb3a97e217d042b1
SHA512 10385d3f7ee57137b1356b80c824bdb60edb0807686cf3e627629e1ca6d952805bb04904af68b1a7410c43583fa64872becb7f4b2d01cfe41c442a252a29b64c
SSDEEP 12288:OI8Rax/zOWHvw9Z4ogV/1niAnx87xywFpP+Tib9Rdv7cx0qQoYd3pSmItVZLq:tsWPe3gV/1i4AxywMib9fHpRU5
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.vehu
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0872PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/3732-2-0x0000000003C90000-0x0000000003DAB000-memory.dmp	family_djvu
behavioral2/memory/2280-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2280-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2280-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2280-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2280-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4740-37-0x0000000000400000-0x0000000000537000-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
3568	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-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\9aa88c11-0a41-4009-a9c3-3dc6dfb02852\\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe\" --AutoStart"	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.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 3732 set thread context of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3752 set thread context of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82

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
2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
4740	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
4740	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 3732 wrote to memory of 2280	3732	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	77
PID 2280 wrote to memory of 3568	2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	78
PID 2280 wrote to memory of 3568	2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	78
PID 2280 wrote to memory of 3568	2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	78
PID 2280 wrote to memory of 3752	2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	79
PID 2280 wrote to memory of 3752	2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	79
PID 2280 wrote to memory of 3752	2280	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	79
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82
PID 3752 wrote to memory of 4740	3752	04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe	82

C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
"C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3732
- C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
  "C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\9aa88c11-0a41-4009-a9c3-3dc6dfb02852" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3568
- - C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
    "C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3752
  - - C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
      "C:\Users\Admin\AppData\Local\Temp\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4740

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 6ebb6b38a3cab01ca3d714f8df8b1d1dc0f159922fe9ae5e104dcd27c59eaf30
MD5 e4cacc9fa4adc8a6751aaf917c99e447
SHA1 d27c0b41d3fe6627c82ea3e6e762b1474f64ba51
SHA512 fc104a463bf08270217f88841c8690dcb264abeebf8bd78dfda2dd2bd4fa85231dc7aede74e427483065ef3e6ef3f2c7e73c1c67dc274861da3421ea35927a80
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 0f0ef4e06b6a7c9b5e49ed1bfe41ad6905636a433eb50a5cd6118d209e9719c6
MD5 f6ec1dcad4ca7ec0731a96339cb318f1
SHA1 609dbe409fa11efaa00e8398113f3baac6e83aa4
SHA512 07302d9ed48584addedf71d8e162995449b64e5004a8a1d31ffa22306642e080f6d3183f85b77f6b4763d44bc4609e6ce2f4a29ab2ccee68811c06127bb956fe
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 4e0694a5e2c49f09bb61a3ec283d86038af530131edcc6a4c085b0be07a9e08e
MD5 d307bc8ab76687a9d1d1dae72d1edfe7
SHA1 b9e826c7e074619595d54642464b5abdd5fbfa20
SHA512 b52c56fdcfa93b5f236ec383cf3e621be3d0ff6125f38cbb7967ab1ca9e64a71f381498ec22d53839f4566e5b27cbab3a47a29c0bc6a9b32c4071004f04fb8c6
MD5 SHA1 SHA512

Submit Download

04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe

Path C:\Users\Admin\AppData\Local\9aa88c11-0a41-4009-a9c3-3dc6dfb02852\04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d.exe
Size 807KB
SHA256 04134c64a73c60df6376fb536a81d8bf81b635b8743d892d0c0ed575229afd3d
MD5 5c194a368d60360bd2ad862a93f2fca2
SHA1 f335b5c5ae86a6aca55a6465bb3a97e217d042b1
SHA512 10385d3f7ee57137b1356b80c824bdb60edb0807686cf3e627629e1ca6d952805bb04904af68b1a7410c43583fa64872becb7f4b2d01cfe41c442a252a29b64c
SSDEEP 12288:OI8Rax/zOWHvw9Z4ogV/1niAnx87xywFpP+Tib9Rdv7cx0qQoYd3pSmItVZLq:tsWPe3gV/1i4AxywMib9fHpRU5
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2280-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2280-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2280-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2280-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2280-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3732-1-0x00000000022F0000-0x0000000002382000-memory.dmp

Download

memory/3732-2-0x0000000003C90000-0x0000000003DAB000-memory.dmp

Download

memory/4740-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4740-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download