djvu | 89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067

General

Target

89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
Size

724KB
MD5

f534f423d397662c8f1a3922eee39741
SHA1

8476235612596e597e6069b7150b7acb5e5aef48
SHA256

89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067
SHA512

f8cbe34834666abf2cf5a7f33caabc0f0e2061547544ed45a0c25a5bb7591da0e23b2ba68a0e6db23e8aa8f2474380bc7f6489e227de11a7986d31a91785c9ca
SSDEEP

12288:BDJQ4vBhSMgdlHQiRAZDIjaRVrT7zihKEn59CsKfUL8aPWOA:BVXv2MTD4gVjzi9nHCBO

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 17 IoCs

resource	yara_rule
behavioral2/memory/540-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/540-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/540-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/540-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4608-3-0x00000000025C0000-0x00000000026DB000-memory.dmp	family_djvu
behavioral2/memory/540-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3988-39-0x0000000000400000-0x0000000000537000-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
2432	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-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8ef38715-d3d6-488b-9565-e83eaadc6aa0\\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe\" --AutoStart"	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.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
11	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4608 set thread context of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 1060 set thread context of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85

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
540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
3988	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
3988	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 4608 wrote to memory of 540	4608	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	80
PID 540 wrote to memory of 2432	540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	81
PID 540 wrote to memory of 2432	540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	81
PID 540 wrote to memory of 2432	540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	81
PID 540 wrote to memory of 1060	540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	82
PID 540 wrote to memory of 1060	540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	82
PID 540 wrote to memory of 1060	540	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	82
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85
PID 1060 wrote to memory of 3988	1060	89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe	85

C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
"C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
  "C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:540
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\8ef38715-d3d6-488b-9565-e83eaadc6aa0" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2432
- - C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
    "C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1060
  - - C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe
      "C:\Users\Admin\AppData\Local\Temp\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3988

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
41899fb113d050926076f808946530fe

SHA1
01641b0f78d93f110ce79cea4f1168d0489fb698

SHA256
357746c690dd3c63ea3d5b0c7f49e12e8d6b56ff4fb9ca4e7d964fbe6bfdd0a4

SHA512
90d8f12538f0f0f5f516aa6f5c819fa76f45be23391ea36bfdb36bf8cc31a34a63855ae1fd046126194119e644de086f1af7c9f604ed3b1ab830d2d08e0e9bba

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
6c53248636e15df285ce9e53635762e2

SHA1
9751612f7e09f3e417371bb93de93f1436bd03e1

SHA256
1246434a0057989066f85c24a572e6d3ede5761d7275cc3708b2e8972e0cdaa7

SHA512
d6fab025cbdc76b8df82be4155fb5cc877f55cb05220d0e84d25c6e42de7d1c8b53b0c5b705d129718e933c94fa0d3ff5d6ee2d50871277fe3bbc7020d38d0c5

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

Filesize
392B

MD5
9232c542004223c7cdb38a9770d44e48

SHA1
56fc2392826afae7441a52e73309dfef03a0054a

SHA256
b2d0c66796eac36e139482ee942f945aaf6fac2c646217d6fe72a22989768d2a

SHA512
89b8c16a14cc8f176ccb2b87675237bb1be59ce165177fc7ea6056a87c53b6f6736fa9cb84c5e55b39a994ca5421a6ee8deef5c0be071be4154b55f19ed2c84d

Download Submit
C:\Users\Admin\AppData\Local\8ef38715-d3d6-488b-9565-e83eaadc6aa0\89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067.exe

Filesize
724KB

MD5
f534f423d397662c8f1a3922eee39741

SHA1
8476235612596e597e6069b7150b7acb5e5aef48

SHA256
89a7480283b642f1e138a0212398fa72ef7cb558489cce79cf7a1cacf8b01067

SHA512
f8cbe34834666abf2cf5a7f33caabc0f0e2061547544ed45a0c25a5bb7591da0e23b2ba68a0e6db23e8aa8f2474380bc7f6489e227de11a7986d31a91785c9ca

Download Submit
memory/540-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/540-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/540-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/540-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/540-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1060-21-0x0000000000400000-0x000000000080C000-memory.dmp

Filesize
4.0MB

Download
memory/1060-23-0x0000000000400000-0x000000000080C000-memory.dmp

Filesize
4.0MB

Download
memory/3988-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3988-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4608-3-0x00000000025C0000-0x00000000026DB000-memory.dmp

Filesize
1.1MB

Download
memory/4608-1-0x0000000002520000-0x00000000025BE000-memory.dmp

Filesize
632KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads