djvu | 843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff

General

Target

843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
Size

757KB
MD5

266f03fc3ed2d43e34e8d8b3c3786ba7
SHA1

4f9f62d103ca89b2c0bc04ed3a522909bf2c2b56
SHA256

843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff
SHA512

d243a336d8cad0d7667675130d5531d9213e48854afc21152e202a89c8e3648a4de91ebc4af009d0f1a0f781cbd9d9242fb17e27f56777269c51c0d5aa402f72
SSDEEP

12288:PTw0ykKfzGeNJz+71vTXnMyJIObs9qijyx/71PkNb5DeH5qWj3hMPfQ7iNJ:fgzFJCZX1Jxvij6hk956N1MA7U

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/868-2-0x0000000005F80000-0x000000000609B000-memory.dmp	family_djvu
behavioral1/memory/2848-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2848-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2848-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2848-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2848-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/5072-41-0x0000000000400000-0x0000000000537000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4064	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-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\68ad1f16-fa8d-4bdf-aaea-e32cf90e6d40\\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe\" --AutoStart"	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.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
8	api.2ip.ua
9	api.2ip.ua
30	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 868 set thread context of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 3552 set thread context of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92

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
2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
5072	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
5072	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 868 wrote to memory of 2848	868	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	85
PID 2848 wrote to memory of 4064	2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	89
PID 2848 wrote to memory of 4064	2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	89
PID 2848 wrote to memory of 4064	2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	89
PID 2848 wrote to memory of 3552	2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	90
PID 2848 wrote to memory of 3552	2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	90
PID 2848 wrote to memory of 3552	2848	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	90
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92
PID 3552 wrote to memory of 5072	3552	843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe	92

C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
"C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:868
- C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
  "C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\68ad1f16-fa8d-4bdf-aaea-e32cf90e6d40" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4064
- - C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
    "C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3552
  - - C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe
      "C:\Users\Admin\AppData\Local\Temp\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:5072

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
fdfddca278b6963f292a46d9a61d7103

SHA1
a6466529832207b33f8f2ba85ebf39994159c046

SHA256
26931f7fea693117d081b190db0a9430d99b09475924258663d85cf43bed5ce7

SHA512
b6ec1eee12bea3d248eed0c1f1bbf676f1884b5043af7f699ee76b03ecf875d311a9ff9e217064ba830bd8b1a0badf456a09c4693eaabcdad8ae62e8fc8141de

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
23e98c62db3574fd3b68605caf59e83d

SHA1
fd7bde92a1300c4a9e37bcda97b27eeeb7f2eacd

SHA256
61b5577623ec02ce459101a17e82fa9969d63f2dda87e4d42013cfb636adb2ae

SHA512
396292a9d5ecab202d6860fd15531266cb0b3589b90653cf79f8d11a4e76cba3e6744fede15c529384d5f398b3128b2310935f8e6b3f82d0fc1331f5d1838b75

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

Filesize
392B

MD5
683ecf41b1c82707ac5ecb428421db0e

SHA1
28ad507a092bb81da2801a59b776684db67bc450

SHA256
baa309eca074c1077cb6df75c8e0e3b3e70ee67a0503e0bb70db9ba35bb4e8df

SHA512
2233d4a911987f28b4c9c20aa623500b179691fe612991ee149249fd0b9f0572852405ebf90330957935cc081dba82d511d48983e2000e58c7f52df4a99181f1

Download Submit
C:\Users\Admin\AppData\Local\68ad1f16-fa8d-4bdf-aaea-e32cf90e6d40\843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff.exe

Filesize
757KB

MD5
266f03fc3ed2d43e34e8d8b3c3786ba7

SHA1
4f9f62d103ca89b2c0bc04ed3a522909bf2c2b56

SHA256
843ec923f92cd426a3a608aa06fd8be47efce42841472b36bab10968286184ff

SHA512
d243a336d8cad0d7667675130d5531d9213e48854afc21152e202a89c8e3648a4de91ebc4af009d0f1a0f781cbd9d9242fb17e27f56777269c51c0d5aa402f72

Download Submit
memory/868-1-0x00000000046E0000-0x000000000477A000-memory.dmp

Filesize
616KB

Download
memory/868-2-0x0000000005F80000-0x000000000609B000-memory.dmp

Filesize
1.1MB

Download
memory/2848-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2848-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2848-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2848-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2848-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3552-22-0x0000000004210000-0x00000000042A4000-memory.dmp

Filesize
592KB

Download
memory/5072-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5072-41-0x0000000000400000-0x0000000000537000-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