djvu | 7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2

General

Target

7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
Size

825KB
MD5

25acd4f57ba6895330f3a188d13681d2
SHA1

924ae83f6b7be8335d250decaf6adb123f965717
SHA256

7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2
SHA512

02065404e36de30ecac0715dd5eb62957a3c7f44f4d5833d5b7dca683de216692cff72df8590ea672d22869af135ff3642d6d6613e92b0d34c25fb6705223291
SSDEEP

24576:hj4jjEmyR7ogjxWblbhAjaE/EGoX990Kp2:ajAmkjxunAOERUY

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.qepi
offline_id
jgILOjDrBgyzY4JmT3B2jDSyBmDPBruKk8bKs6t1
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/665ddae3fc3cd10bbaaa4350408b196920240504141005/4cae7e 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: 0867PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral1/memory/2456-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2456-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2456-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4240-4-0x0000000003740000-0x000000000385B000-memory.dmp	family_djvu
behavioral1/memory/2456-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2456-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4912-41-0x0000000000400000-0x0000000000537000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3840	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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a8847af7-c746-4305-be05-a031541b262b\\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe\" --AutoStart"	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.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
11	api.2ip.ua
1	api.2ip.ua
2	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4240 set thread context of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4272 set thread context of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89

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
2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
4912	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
4912	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 4240 wrote to memory of 2456	4240	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	82
PID 2456 wrote to memory of 3840	2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	86
PID 2456 wrote to memory of 3840	2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	86
PID 2456 wrote to memory of 3840	2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	86
PID 2456 wrote to memory of 4272	2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	87
PID 2456 wrote to memory of 4272	2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	87
PID 2456 wrote to memory of 4272	2456	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	87
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89
PID 4272 wrote to memory of 4912	4272	7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe	89

C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
"C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4240
- C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
  "C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2456
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a8847af7-c746-4305-be05-a031541b262b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3840
- - C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
    "C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4272
  - - C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe
      "C:\Users\Admin\AppData\Local\Temp\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4912

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

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
07ee23ba0a6d65486c02777656134226

SHA1
1afd41e6d40db17cc7c1131f2191f8cd5eacdc69

SHA256
0565d893994abf11978d4e14fa4a1b900ce76d64cf5aca5dc1b93ac36d7939ee

SHA512
45c4aebbfea8a9ad74a3c214d71bc903d09c643c08431b552ee2ad6c1c258a6a013bdcdadbccfd62f2045761ff67c851729dc139063cd5ab6d09ba6f378362fa

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
5f8b7715ee6514368fa199c1641d965f

SHA1
175456052b476c57faa3da12c36dac7d0582c3ce

SHA256
e8e664e0ed88dc38729d41abb50a51f77a2380a3932e97c31ff6827ebf05a48f

SHA512
402db2ec13ab33d3866b12e75f02aec9b8924c461e995ee48ff1627bafbcae313ea20b60456d1a906811c0686036ad9fb7fe09b1c844d192b04e59ca037a97b0

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

Filesize
392B

MD5
2b69e6feb91167ea7dff115c9b637b82

SHA1
b7e856f96a594998d70d32557740cbd9d79ec59b

SHA256
cddef6ccaa65beb3fa56c1bfb0e1307637be1ad42e0313e615a7809cf15687c5

SHA512
8c9ac03a7dca404dcb69795536af7a522a01b112926466ce5a75c19f61249a55186ba0aca483b1947a778800ed8a9b814419d440b6536dff368e8db5e53bdc83

Download Submit
C:\Users\Admin\AppData\Local\a8847af7-c746-4305-be05-a031541b262b\7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2.exe

Filesize
825KB

MD5
25acd4f57ba6895330f3a188d13681d2

SHA1
924ae83f6b7be8335d250decaf6adb123f965717

SHA256
7d3e95b6a2e01f850731979147022e4d2214e6dc568ca649849dfb274e85d2d2

SHA512
02065404e36de30ecac0715dd5eb62957a3c7f44f4d5833d5b7dca683de216692cff72df8590ea672d22869af135ff3642d6d6613e92b0d34c25fb6705223291

Download Submit
memory/2456-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2456-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4240-4-0x0000000003740000-0x000000000385B000-memory.dmp

Filesize
1.1MB

Download
memory/4240-1-0x00000000036A0000-0x0000000003735000-memory.dmp

Filesize
596KB

Download
memory/4272-24-0x0000000000400000-0x0000000001A98000-memory.dmp

Filesize
22.6MB

Download
memory/4272-34-0x0000000000400000-0x0000000001A98000-memory.dmp

Filesize
22.6MB

Download
memory/4912-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4912-41-0x0000000000400000-0x0000000000537000-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