djvu | 0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04

Analysis

max time kernel
147s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
22/05/2024, 12:30

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
Size 707KB
Sample240522-ppxfpabd57
SHA256 0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04
MD5 1534a3acfde4ce180b5e9619954df27f
SHA1 8d4ceb341b7ac57aab2f94236e7e8b1ede75051f
SHA512 ffedda4d8936eed91291fe79146b508eaf4d3bf8c378ae1f946ff1a45844597183ce87f974f4acef7f8956b3bb8afbfe1c339ccf9b9a1374f7a80a8a48f86373
SSDEEP 12288:HUsJbvW1Haefnh1S3rKZGvRemBKgeTZA63TXNbL0IqrMNuDuEcQuB2t79:HUs9hq6KErQDVA63TdBqrMNcuEcJ6
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/4468-4-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral2/memory/3700-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3700-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3152-37-0x0000000000400000-0x0000000000537000-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
4492	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\\f8e7c840-4977-4c38-8712-114c11923770\\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe\" --AutoStart"	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.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
2	api.2ip.ua
8	api.2ip.ua
1	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4468 set thread context of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 1688 set thread context of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.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
3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
3152	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
3152	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 4468 wrote to memory of 3700	4468	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	80
PID 3700 wrote to memory of 4492	3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	81
PID 3700 wrote to memory of 4492	3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	81
PID 3700 wrote to memory of 4492	3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	81
PID 3700 wrote to memory of 1688	3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	82
PID 3700 wrote to memory of 1688	3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	82
PID 3700 wrote to memory of 1688	3700	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	82
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86
PID 1688 wrote to memory of 3152	1688	0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe	86

C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
"C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4468
- C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
  "C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3700
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\f8e7c840-4977-4c38-8712-114c11923770" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4492
- - C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
    "C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1688
  - - C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
      "C:\Users\Admin\AppData\Local\Temp\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3152

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 e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b
MD5 6728aea2631b86a76c237508d8ba9b55
SHA1 7a670f95cac088313f7558869162fe01c6dc0ec9
SHA512 533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5
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 07cdedd0a0c3f261b6548d4e97456824f2847076eacef7cc5675f8c18a27094d
MD5 226b1d6e1a8875f271af3ed2aa6c94a3
SHA1 242097e48642110115d35a39d178f3b34658c0c5
SHA512 6a685228b4460aaeaffc85cc8bea317450996ace95588dbdd26d382ac9c6dfc9b1fc349680f1e7938b658f7b4a0683d204fc1385b19b0f6efa784c5af907d445
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 3f82aaf128c64fca9188f8b9e26c591ec7ecfddaa5af2cb69a7409507445a68d
MD5 24ddce913ea12fd80e2a0c6341c94cb3
SHA1 4b16203b7ff06f165868c643350deec002fdfa53
SHA512 ae0f72ecf1b64f12f73046e8211ad227b89e542e1ce3b20424a4b1d0d761942268c382ec3482fd860a63fd4ea2ea07e3d9b3df74f1beefaf49f861c08cb38dd4
MD5 SHA1 SHA512

Submit Download

0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe

Path C:\Users\Admin\AppData\Local\f8e7c840-4977-4c38-8712-114c11923770\0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04.exe
Size 707KB
SHA256 0e3335732170b14285993ce3fb9514ba7c31cff9ee7e53a7a0629801f2a02f04
MD5 1534a3acfde4ce180b5e9619954df27f
SHA1 8d4ceb341b7ac57aab2f94236e7e8b1ede75051f
SHA512 ffedda4d8936eed91291fe79146b508eaf4d3bf8c378ae1f946ff1a45844597183ce87f974f4acef7f8956b3bb8afbfe1c339ccf9b9a1374f7a80a8a48f86373
SSDEEP 12288:HUsJbvW1Haefnh1S3rKZGvRemBKgeTZA63TXNbL0IqrMNuDuEcQuB2t79:HUs9hq6KErQDVA63TdBqrMNcuEcJ6
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3152-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-33-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-31-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3152-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3700-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3700-2-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3700-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3700-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3700-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4468-4-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Download

memory/4468-1-0x0000000004A20000-0x0000000004AB6000-memory.dmp

Download