djvu | 668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de

General

Target

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
Size

733KB
MD5

1871a7b1a2bc50989010342b373c4c99
SHA1

bda919303b99970bda999cd2762b0c6f8a8bf587
SHA256

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de
SHA512

14769d5dbf7161b3845083cbdddb8c39cefd90bccce6cc5a8031f6e58cc477c114dc35ff162093812ea527241f3fc2f2ec6f1f48c7b5a0dbd2aeacfd40bada5d
SSDEEP

12288:7SV6+0wTK32ZiRHThQd4yuCRM8emC/E13RPdGbwH7ratUMgJqd:7S3aRVw4bUM8eCBPdG07engs

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Processes:

resource	yara_rule
behavioral1/memory/1232-2-0x00000000049F0000-0x0000000004B0B000-memory.dmp	family_djvu
behavioral1/memory/4864-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4864-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4864-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4864-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4864-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1272-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3840 icacls.exe

pid	process
3840	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\975499be-12f9-49bc-aebb-7591a7acb5f9\\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe\" --AutoStart"	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.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.

Processes:

flow ioc

4 api.2ip.ua
5 api.2ip.ua
19 api.2ip.ua

flow	ioc
4	api.2ip.ua
5	api.2ip.ua
19	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

description	pid	process	target process
PID 1232 set thread context of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 set thread context of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

pid	process
4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
1272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
1272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
"C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
  "C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\975499be-12f9-49bc-aebb-7591a7acb5f9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3840
- - C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
    "C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4272
  - - C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
      "C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
ad097f8a8502cc72518724d2b31426ec

SHA1
4fe49565580149ed2638f29a8cb4f19ef9513a56

SHA256
33a6fcd25004cbccf304f74a38be16f8cd00840ae4b70bca52d2cc68e14cc486

SHA512
2606d0e4798cd79a7a02c49574cc12f0166284923c4f6adb26aeab544a297c4b34fe253452b3fa76c15a1da670f3fe63988fe77e03ff1cd8e8063d37570aefc2

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
4513a44b104b23fce55f2dd14c17a029

SHA1
ed258695209ac1aeb65821b81c4e1283e0906655

SHA256
16f6d713009ce844f2b5a38c3924398ff87533fa7a018a7901ac8e8a06360c09

SHA512
8128e24d3d87aa9c2ba7df00d415f239e1a84c1cfb90dfb0fbf51fc3f6d1479f2f9b1a12bd43333103893ae99d518f416565d14f8004c7d21007db56f18e81b8

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
117f7e44d142bb3f7b9e2e5bbc434744

SHA1
f6805cce24d3389e73b0efde6ae638cb9e8076fc

SHA256
446a44014e54ffc5b76ce1ae72870a3586dfe79440bed5e27f63a80ba57af7fc

SHA512
3e9e00a11bbe2a9fa9688b1fb47bed74b33f42557788e13abbbd239ff822c0549712208a49d5207a484f4b1916f7c7fb259e2a63b364ffe0ac6532ce2bec12e2

Download Submit
C:\Users\Admin\AppData\Local\975499be-12f9-49bc-aebb-7591a7acb5f9\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

Filesize
733KB

MD5
1871a7b1a2bc50989010342b373c4c99

SHA1
bda919303b99970bda999cd2762b0c6f8a8bf587

SHA256
668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de

SHA512
14769d5dbf7161b3845083cbdddb8c39cefd90bccce6cc5a8031f6e58cc477c114dc35ff162093812ea527241f3fc2f2ec6f1f48c7b5a0dbd2aeacfd40bada5d

Download Submit
memory/1232-2-0x00000000049F0000-0x0000000004B0B000-memory.dmp

Filesize
1.1MB

Download
memory/1232-1-0x0000000004950000-0x00000000049E4000-memory.dmp

Filesize
592KB

Download
memory/1272-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1272-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4864-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 1232 wrote to memory of 4864	1232	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4864 wrote to memory of 3840	4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	icacls.exe
PID 4864 wrote to memory of 3840	4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	icacls.exe
PID 4864 wrote to memory of 3840	4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	icacls.exe
PID 4864 wrote to memory of 4272	4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4864 wrote to memory of 4272	4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4864 wrote to memory of 4272	4864	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4272 wrote to memory of 1272	4272	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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