djvu | 026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74

General

Target

026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
Size

694KB
MD5

18a7f7228835f08b029e9c04834be20a
SHA1

9e470172ddc989f4b17454dc079957e66ab2ce5b
SHA256

026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74
SHA512

2f5eef5878b54311554f0309941807233ff11e09fb8241b7f455f8fe6394ed35b450ecddcffe036f2143580c9d5f4c26a12999ef7487509d7332b2a5d01a8e57
SSDEEP

12288:YlWVqm3RndQI5W+bUn+en9qtBqp/A3bYwX6BjW972Sma55yl6voMA:fvh6ypGriLtXmjW972xa+l6tA

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.wisz
offline_id
4p0Nzrg1q0ND5of5Gtp2UBjthSXuE8VxnMrd4vt1
payload_url
http://brusuax.com/dl/build2.exe

http://habrafa.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/ace9dcf133a3c07499672522e2c6bd3a20240301114053/77eeff 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: 0853ASdw

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 18 IoCs

resource	yara_rule
behavioral2/memory/764-2-0x0000000003C80000-0x0000000003D9B000-memory.dmp	family_djvu
behavioral2/memory/4988-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4988-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4988-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4988-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4988-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2804-22-0x0000000003BA0000-0x0000000003C35000-memory.dmp	family_djvu
behavioral2/memory/4156-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4156-42-0x0000000000400000-0x0000000000537000-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
424	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-1-5-21-313240725-3527728709-4038673254-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6af0a82c-5125-40ce-8da5-0b7701acdf52\\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe\" --AutoStart"	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.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 764 set thread context of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 2804 set thread context of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.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
4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
4156	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
4156	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 764 wrote to memory of 4988	764	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	72
PID 4988 wrote to memory of 424	4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	73
PID 4988 wrote to memory of 424	4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	73
PID 4988 wrote to memory of 424	4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	73
PID 4988 wrote to memory of 2804	4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	74
PID 4988 wrote to memory of 2804	4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	74
PID 4988 wrote to memory of 2804	4988	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	74
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76
PID 2804 wrote to memory of 4156	2804	026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe	76

C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
"C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:764
- C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
  "C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4988
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\6af0a82c-5125-40ce-8da5-0b7701acdf52" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:424
- - C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
    "C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2804
  - - C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe
      "C:\Users\Admin\AppData\Local\Temp\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4156

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
1cfc0a1560c8a6b64e4cdc5c2f8477c6

SHA1
0ce75dede00bf389dcd14b4c82f2c0b6f9edb2a3

SHA256
1aff5542b26102a183b6f0922d1cb3c3b07a32da9f7caf861fb1c0872ea037de

SHA512
06ec8042bb4d1de870c19f958d576689cf0fac592211d2cf08a7f09065e615e79b6e2d17e4f5832919c5b57b9ee507500bf415d3747b775f0d8388eb5da7aaf1

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
75311686e2e7b8e67a1952bc13a8a587

SHA1
3525f6143592555a783c37d6347427a41971f925

SHA256
7f27a0b6bbad4ca0af6f6c649d916db0deda3d5ab21bdb6b95ffdd2ee48a8b29

SHA512
0c39b2076114e49aa20e7d69f1b9423059b391bccf62dd83c98f19f2a0f488570d6aded59074d69e01c81e980e9e506ecd0faa6446cd1c9af2b5b4ccea49a9dd

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

Filesize
392B

MD5
e21099cb58f3a60cf5770e3d9665e398

SHA1
2554dfcfe22afab7a6a074ff0abf5bc731271a4d

SHA256
ec4d84530a82326580c99b37657b5c8fbcbbeea49e809fc44d64c59de5d94d95

SHA512
551124deab07dca04184798ce904e715bd82f60eef1a6546848a50ef82cf566c2f605fd4fb91c6cd3d1516290d4d838d80a0a08928378cafb6fecce9e4e3dfab

Download Submit
C:\Users\Admin\AppData\Local\6af0a82c-5125-40ce-8da5-0b7701acdf52\026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74.exe

Filesize
694KB

MD5
18a7f7228835f08b029e9c04834be20a

SHA1
9e470172ddc989f4b17454dc079957e66ab2ce5b

SHA256
026bac9c5d071f17871de5b2f9a50f253e2253e1fcf88fc0fa64e4f032e72b74

SHA512
2f5eef5878b54311554f0309941807233ff11e09fb8241b7f455f8fe6394ed35b450ecddcffe036f2143580c9d5f4c26a12999ef7487509d7332b2a5d01a8e57

Download Submit
memory/764-1-0x0000000003BE0000-0x0000000003C73000-memory.dmp

Filesize
588KB

Download
memory/764-2-0x0000000003C80000-0x0000000003D9B000-memory.dmp

Filesize
1.1MB

Download
memory/2804-22-0x0000000003BA0000-0x0000000003C35000-memory.dmp

Filesize
596KB

Download
memory/4156-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4156-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4988-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4988-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4988-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4988-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4988-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads