djvu | 0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab

Analysis

max time kernel
143s
max time network
123s
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, 16:07

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General

Target
0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
Size 771KB
Sample240523-tkxccage6x
SHA256 0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab
MD5 68efa1ec3f227277cdb2949de32ed7b6
SHA1 ae14baa9795f3e2d3489d6633d1931cc8f342d89
SHA512 9fed06969435d48457b28113c4ca6bf1fffa700781e64388fa773ff2cd31b37bb24310b48e6e38e33f140ab2cb2d0e74dfbf74e881d89db03701de085bc31a77
SSDEEP 12288:edad8K8oq8wVpXVSE+pnYu4B1QvVundRBf1Pb9Z0YANYjUs5k4n/Te01:edo8K8oCtOnYuwWvVEd7f1RZpANYA4/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test1/get.php

Attributes

extension
.vepi
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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

resource	yara_rule
behavioral2/memory/816-2-0x0000000003DC0000-0x0000000003EDB000-memory.dmp	family_djvu
behavioral2/memory/3104-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3104-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3104-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3104-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3104-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4352-37-0x0000000000400000-0x0000000000537000-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
2348	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-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\439aa9fe-a0a6-4e93-85f3-54a273f36d5a\\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe\" --AutoStart"	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.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
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 816 set thread context of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 1572 set thread context of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.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
3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
4352	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
4352	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 816 wrote to memory of 3104	816	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	77
PID 3104 wrote to memory of 2348	3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	78
PID 3104 wrote to memory of 2348	3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	78
PID 3104 wrote to memory of 2348	3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	78
PID 3104 wrote to memory of 1572	3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	79
PID 3104 wrote to memory of 1572	3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	79
PID 3104 wrote to memory of 1572	3104	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	79
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82
PID 1572 wrote to memory of 4352	1572	0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe	82

C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
"C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:816
- C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
  "C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3104
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\439aa9fe-a0a6-4e93-85f3-54a273f36d5a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2348
- - C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
    "C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1572
  - - C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
      "C:\Users\Admin\AppData\Local\Temp\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4352

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

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Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 7b5bd8bc8ac2cd655c212c4790e5d9a259046730a9f0bb51616b036da55d2c50
MD5 9e130b50184e39e32205c9dd3befee15
SHA1 150b8bfb3208d3a854996e02c1470d81530335b5
SHA512 3cf76690e692c874792fa99d6358ebdd3596bab33bede653067375fc7de617eb7f150f52e640d34b2d51dcbe39c5bb88381bdc0279054ab65d5f1492d89f648f
MD5 SHA1 SHA512

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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

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 96df74d8cc80da3d1d8eb4ead6c2b71bc0d068172a88a8285e914c9277e63f00
MD5 f9f5db67db540d5e7f47b17ce9ac6c54
SHA1 0e8f6ebb17e70a3533de2a4f9a4f19162e852492
SHA512 3b003e870cd87c5fe5df72eff65ec66dd3f2c78e2dc1d267e608913907b4916b06ba915f0fef8dbcc6af08ba43bd05b78e0e5e5ccaad6143996222f83ac4f181
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 20c0eeb64f34c8fb7d539c46e7e2cbab5f852dfdb8968c6a5153b6df638537a7
MD5 cd97b0b5e423066476cfc420a9748544
SHA1 e7967552a3fefb553ae8d825ecff5c5656150f8a
SHA512 252f83f277d99a16b50029a82df1ae4012d8f81af57436f4b11d58e7ea285bed48d4e2d417f3c5491a9761081ba0996977a15b0cdc9a2953a4750d2cd99bb056
MD5 SHA1 SHA512

Submit Download

0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe

Path C:\Users\Admin\AppData\Local\439aa9fe-a0a6-4e93-85f3-54a273f36d5a\0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab.exe
Size 771KB
SHA256 0dd13bb53f2bf14cec90240dacf1dc23c001faf737540776867df1712019a7ab
MD5 68efa1ec3f227277cdb2949de32ed7b6
SHA1 ae14baa9795f3e2d3489d6633d1931cc8f342d89
SHA512 9fed06969435d48457b28113c4ca6bf1fffa700781e64388fa773ff2cd31b37bb24310b48e6e38e33f140ab2cb2d0e74dfbf74e881d89db03701de085bc31a77
SSDEEP 12288:edad8K8oq8wVpXVSE+pnYu4B1QvVundRBf1Pb9Z0YANYjUs5k4n/Te01:edo8K8oCtOnYuwWvVEd7f1RZpANYA4/
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/816-2-0x0000000003DC0000-0x0000000003EDB000-memory.dmp

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memory/816-1-0x0000000002380000-0x000000000241F000-memory.dmp

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memory/3104-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3104-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3104-19-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3104-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3104-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-28-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-27-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-35-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4352-37-0x0000000000400000-0x0000000000537000-memory.dmp

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