djvu | 2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a

General

Target

2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
Size

802KB
MD5

0779bb0f196e0f569113456aac677a3d
SHA1

fe8c4330c4a00c6931c68a41fee99bede478a902
SHA256

2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a
SHA512

73cee4415e796d71ca6b3b91f95a917fb8c926453279210c0500c17d8b2292e4183588b4dbd6293ff9945cee0dc0ef921e7316c2500106254eb4e34ada8c86fe
SSDEEP

12288:99WFA2R+3gfJn0qEH5S6xuyu1TUDJmHiYyMVEUcejAFTFHDkT6jj7PjEbhV:ChaLxuNtXioVSJHDkTQjbjEbh

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 14 IoCs

resource	yara_rule
behavioral2/memory/4196-2-0x0000000003650000-0x000000000376B000-memory.dmp	family_djvu
behavioral2/memory/4968-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4968-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4968-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4968-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4968-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4780-36-0x0000000000400000-0x0000000000537000-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
4428	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-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0fd29864-55a6-439c-a6cf-6433cefa50cc\\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe\" --AutoStart"	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.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
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4196 set thread context of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4336 set thread context of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76

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
4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
4780	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
4780	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4196 wrote to memory of 4968	4196	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	72
PID 4968 wrote to memory of 4428	4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	73
PID 4968 wrote to memory of 4428	4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	73
PID 4968 wrote to memory of 4428	4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	73
PID 4968 wrote to memory of 4336	4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	74
PID 4968 wrote to memory of 4336	4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	74
PID 4968 wrote to memory of 4336	4968	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	74
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76
PID 4336 wrote to memory of 4780	4336	2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe	76

C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
"C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4196
- C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
  "C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4968
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\0fd29864-55a6-439c-a6cf-6433cefa50cc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4428
- - C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
    "C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4336
  - - C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
      "C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4780

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

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Downloads

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

Filesize
1KB

MD5
56282e3f56542f67e60909a4345c5a35

SHA1
1a627ec9980ee9e3f5846da3b63552122032f78b

SHA256
719698173bbfbb3375c5e0c43342f785c76727fcd6560364e0d9bec77232a6f5

SHA512
291a1569239659ae5c1466d324f6c0114653f2b1578e59f1f340decf189aa38ccf9599c2005551e09ce94f2bceb94f64773181fc011dc1167edd4aa9b1b4d11e

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
31e46469000b13498d38559df53d73ec

SHA1
8e1a0270df046ad93e5103a008c944633bb01c16

SHA256
0b29551384baf79c75a89dad168c622505abe1c11caca9d0dba6dc0b4fbd1686

SHA512
cd00500d6f4e9963315367325dac3e1a94d695c383d629d2fa7a650c27c755b9d8a2b5b2c068a73a14240f60761659fc84c6f5de475061672c52f2056c0a68da

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

Filesize
392B

MD5
aab65b8e274c114b5e5638cf538d4b7b

SHA1
be54be0d075636b2f30958ed63c0d73df306ff4c

SHA256
1842903b62f19e5026639ba67fa9b9232dd3803cedd93ae8f2fd8b746b6f8a48

SHA512
f014f64f3d38b07504c3f6ccdf950c9770b958cecaef30d8ccba62af1331ccd210efc74477712824b06a0f9ac2cf9726507697af62450ce8cb6c56bcc6013fc6

Download Submit
C:\Users\Admin\AppData\Local\0fd29864-55a6-439c-a6cf-6433cefa50cc\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe

Filesize
802KB

MD5
0779bb0f196e0f569113456aac677a3d

SHA1
fe8c4330c4a00c6931c68a41fee99bede478a902

SHA256
2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a

SHA512
73cee4415e796d71ca6b3b91f95a917fb8c926453279210c0500c17d8b2292e4183588b4dbd6293ff9945cee0dc0ef921e7316c2500106254eb4e34ada8c86fe

Download Submit
memory/4196-2-0x0000000003650000-0x000000000376B000-memory.dmp

Filesize
1.1MB

Download
memory/4196-1-0x0000000001D00000-0x0000000001DA2000-memory.dmp

Filesize
648KB

Download
memory/4780-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4780-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4780-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4780-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4780-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4780-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4780-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4780-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4968-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4968-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4968-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4968-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4968-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads