djvu | a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07

General

Target

a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
Size

763KB
MD5

0e2d81150e390967adede63bb8797e8b
SHA1

3a17122d08cb7b3b3b9628fa3d89871a6b0d1e05
SHA256

a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07
SHA512

0e983af8fc72200f7e4a350abe88a4ddd31a99b94b0b11f3b9e81373fcf320685f4089cbcff206ba432a43472e52d1f34ef3794b93726872df97b8dad2d01d5e
SSDEEP

12288:wvrnDlo7dMeseUgi6b/pUqTpSNrdWTvFUwpFj8y6FC1qk7EnocqcbTes1tWvzK:wK7dvseUWJTcu9FjgkKo+bTeIEz

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
behavioral2/memory/4316-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4316-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4316-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5100-3-0x0000000003830000-0x000000000394B000-memory.dmp	family_djvu
behavioral2/memory/4316-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4316-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3848-40-0x0000000000400000-0x0000000000537000-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
4604	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-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c8266ad8-aa02-4971-a4c5-463bdf0df264\\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe\" --AutoStart"	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.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
7	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5100 set thread context of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 1396 set thread context of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86

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
4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
3848	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
3848	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 5100 wrote to memory of 4316	5100	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	80
PID 4316 wrote to memory of 4604	4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	81
PID 4316 wrote to memory of 4604	4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	81
PID 4316 wrote to memory of 4604	4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	81
PID 4316 wrote to memory of 1396	4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	82
PID 4316 wrote to memory of 1396	4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	82
PID 4316 wrote to memory of 1396	4316	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	82
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86
PID 1396 wrote to memory of 3848	1396	a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe	86

C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
"C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
  "C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4316
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c8266ad8-aa02-4971-a4c5-463bdf0df264" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4604
- - C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
    "C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1396
  - - C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe
      "C:\Users\Admin\AppData\Local\Temp\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3848

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
422a081e58bf330679ef48dc46d7a1d5

SHA1
2636af2dca0b8da050cceb3302ca6c76fb322ecd

SHA256
cdede115b447b845285b6436b9aa5e561a9711c30cf89d2be2a78a4e0dc88af7

SHA512
77354ea7d10f2a96d715e2f8450ca2e8322d2af29a0fb4b178e5dc3c90a20c7bb8651fb36aa83ab33616505d71c3175988d1ba959024a9e035270d2d5823ab35

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
c035ca71bf29f20c3c77c5c7f50a94db

SHA1
55571b3873c828fda3c2ef390c3c373e14f4bde2

SHA256
c40cf8860b308209c17a277c56d0407cfc6dcde85a165f735232ac607739863f

SHA512
0b2fba0b35d10458d15f2fb68a9eb541aacbd959db7fa0527f38220e384c932896063a7d62e208140b6f85c5d8bf4b1b840b85892eebee306d066f5b696c80be

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

Filesize
392B

MD5
d7e9ba21afbc360a832c90c77100cb7c

SHA1
dc90bb381814fb24c9f962c67b9009851aa33961

SHA256
751f7b4236bcf02e3ed621fd23322f1c26d6c57b83f76183907b8d8d27844a83

SHA512
0294dcc1b32e536c186fe8f4a2b8b9de8a838d2e98a08ba1502fddc3dbe4ac4284a879c8d47a1847a73bef4c0713beb9786e8b117b99650f5cfeba0d20ba2b1d

Download Submit
C:\Users\Admin\AppData\Local\c8266ad8-aa02-4971-a4c5-463bdf0df264\a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07.exe

Filesize
763KB

MD5
0e2d81150e390967adede63bb8797e8b

SHA1
3a17122d08cb7b3b3b9628fa3d89871a6b0d1e05

SHA256
a9d6a59227370ab078d64d84f81f7502f0511cdbd945a94ca9348a10a9c7be07

SHA512
0e983af8fc72200f7e4a350abe88a4ddd31a99b94b0b11f3b9e81373fcf320685f4089cbcff206ba432a43472e52d1f34ef3794b93726872df97b8dad2d01d5e

Download Submit
memory/1396-21-0x0000000001DF0000-0x0000000001E90000-memory.dmp

Filesize
640KB

Download
memory/3848-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3848-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4316-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4316-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4316-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4316-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4316-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5100-3-0x0000000003830000-0x000000000394B000-memory.dmp

Filesize
1.1MB

Download
memory/5100-1-0x0000000001D70000-0x0000000001E0F000-memory.dmp

Filesize
636KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads