djvu | 946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48

General

Target

946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
Size

816KB
MD5

9f91afdb58b312a555db2978d7157150
SHA1

96d3de3ac3ca32efcc3d911b0389e13f43ae1c13
SHA256

946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48
SHA512

9596e362858b1484cb6e566cac32c394a9e26b2cbc278afa14e046a9dc0d12b75ae1e76e71d43cc6287e64a47eec35328275aa86f3cbec7c6c0dc836ca5608ca
SSDEEP

12288:E6uXncCdGzaVsGgZLhq1At2krFYkWog9feZN7kF5MM7GZ3SVt//sjdnN7E:EncKWa+jZRrFVWBfFFHQa187

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/4604-2-0x0000000005FC0000-0x00000000060DB000-memory.dmp	family_djvu
behavioral1/memory/4340-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4340-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4340-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4340-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4340-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3732-39-0x0000000000400000-0x0000000000537000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
868	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-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3a9ca74e-eaf0-4496-a66e-072c147f1ccd\\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe\" --AutoStart"	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.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
4	api.2ip.ua
21	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4604 set thread context of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4776 set thread context of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97

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
4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
3732	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
3732	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4604 wrote to memory of 4340	4604	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	86
PID 4340 wrote to memory of 868	4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	94
PID 4340 wrote to memory of 868	4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	94
PID 4340 wrote to memory of 868	4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	94
PID 4340 wrote to memory of 4776	4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	95
PID 4340 wrote to memory of 4776	4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	95
PID 4340 wrote to memory of 4776	4340	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	95
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97
PID 4776 wrote to memory of 3732	4776	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	97

C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
"C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
  "C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4340
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\3a9ca74e-eaf0-4496-a66e-072c147f1ccd" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:868
- - C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
    "C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4776
  - - C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
      "C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3732

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

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Downloads

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

Filesize
1KB

MD5
0ee3d2a2cc827a3e5a0109feef51633f

SHA1
9d6c87b95fdd10db2803ae94aed5c5cc9de8730f

SHA256
fb212511bafb0164e57965d40728e042ba1f2b5c0e5236157abfa8d3478edc4b

SHA512
c6dc3fa3f8a22a159949ad06cf11a17b318bb5d1055281118aa035eff11164ff42642e1c4bc6301e5dda0d8479cdeef1673ff1dad226f0f10e2592ef12a78572

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
c17423e1e209166d3560fed1caf99792

SHA1
f04b0ba1cfad3db893fc1ce0bd54ed9cc8482ed5

SHA256
a6ef701725eaa92a328949f34ea7e8311077b1fc7af507ccde4cde299d41e38e

SHA512
d7dbf39a0ef75650d92f579d3e19262c5c6cfbff002e9781858fb7570f42c9382436d768b75185d9aa9fcf21105f858776df7a9bd7f87315a33a4c3600de7a2e

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

Filesize
392B

MD5
76d92b07bf510c90f4bd3e2b16c1d01c

SHA1
0f4682e32c9963cadac3694f54d1c38d157e0ac6

SHA256
7c69e43338a29fd1b19119b2404ce062de21f66df50170474e98e2debab384d2

SHA512
060858fa5afc6c12f16e5461e5ba9627a2d8b890fa212b38180a414d60bd89d919de41c7ea98c7bd9a18cc854616e8ebac8282c66de7b81b206600f452343b03

Download Submit
C:\Users\Admin\AppData\Local\3a9ca74e-eaf0-4496-a66e-072c147f1ccd\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe

Filesize
816KB

MD5
9f91afdb58b312a555db2978d7157150

SHA1
96d3de3ac3ca32efcc3d911b0389e13f43ae1c13

SHA256
946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48

SHA512
9596e362858b1484cb6e566cac32c394a9e26b2cbc278afa14e046a9dc0d12b75ae1e76e71d43cc6287e64a47eec35328275aa86f3cbec7c6c0dc836ca5608ca

Download Submit
memory/3732-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4340-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4604-2-0x0000000005FC0000-0x00000000060DB000-memory.dmp

Filesize
1.1MB

Download
memory/4604-1-0x0000000004670000-0x000000000470B000-memory.dmp

Filesize
620KB

Download
memory/4776-20-0x00000000044E0000-0x0000000004577000-memory.dmp

Filesize
604KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads