djvu | 946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48

General

Target

946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
Size

816KB
MD5

9f91afdb58b312a555db2978d7157150
SHA1

96d3de3ac3ca32efcc3d911b0389e13f43ae1c13
SHA256

946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48
SHA512

9596e362858b1484cb6e566cac32c394a9e26b2cbc278afa14e046a9dc0d12b75ae1e76e71d43cc6287e64a47eec35328275aa86f3cbec7c6c0dc836ca5608ca
SSDEEP

12288:E6uXncCdGzaVsGgZLhq1At2krFYkWog9feZN7kF5MM7GZ3SVt//sjdnN7E:EncKWa+jZRrFVWBfFFHQa187

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/4616-2-0x0000000005FF0000-0x000000000610B000-memory.dmp	family_djvu
behavioral2/memory/5104-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5104-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5104-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5104-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5104-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2304-39-0x0000000000400000-0x0000000000537000-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
940	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-1-5-21-801765966-3955847401-2235691403-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b583e2f2-970d-4764-bc2e-c29b24797c61\\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe\" --AutoStart"	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.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
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4616 set thread context of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 1796 set thread context of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85

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
5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
2304	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
2304	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 4616 wrote to memory of 5104	4616	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	78
PID 5104 wrote to memory of 940	5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	80
PID 5104 wrote to memory of 940	5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	80
PID 5104 wrote to memory of 940	5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	80
PID 5104 wrote to memory of 1796	5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	81
PID 5104 wrote to memory of 1796	5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	81
PID 5104 wrote to memory of 1796	5104	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	81
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85
PID 1796 wrote to memory of 2304	1796	946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe	85

C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
"C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
  "C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5104
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b583e2f2-970d-4764-bc2e-c29b24797c61" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:940
- - C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
    "C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1796
  - - C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe
      "C:\Users\Admin\AppData\Local\Temp\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2304

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
0ee3d2a2cc827a3e5a0109feef51633f

SHA1
9d6c87b95fdd10db2803ae94aed5c5cc9de8730f

SHA256
fb212511bafb0164e57965d40728e042ba1f2b5c0e5236157abfa8d3478edc4b

SHA512
c6dc3fa3f8a22a159949ad06cf11a17b318bb5d1055281118aa035eff11164ff42642e1c4bc6301e5dda0d8479cdeef1673ff1dad226f0f10e2592ef12a78572

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
846937f00a17f938dd6f99860522fd7f

SHA1
2c89f5ab052f1662753c3c9b3660c7162e8d9775

SHA256
eb200aee47b789aba173640b8bb71b4bb067ab036fde6a57afa6f4b89d2d31f6

SHA512
fea03e2e8cd09e320e8d699271be7fb0104e576a87e1425133215b49c4b54f5007681b4ce56ca0be58febf000a07ec2bc53c599313ceb5f0fed3c92bbdfbcd56

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

Filesize
392B

MD5
e828adb1da4a80a4a5f2235a4f98ebf2

SHA1
f47fece973d84896f640b5283e338f8406961bf2

SHA256
c4b17ac305494ed29447e8f12b1e58401741c37ec8acdf60b4e9b1e2893e16db

SHA512
4cd6e30e7f0e79afc17c386ef70210a255112a8f7b5ae4017904f8cc49460f2603189c7d00e2ea3dfd5f72739250a892056ec5d23e1f5ffa832bb3587ab40602

Download Submit
C:\Users\Admin\AppData\Local\b583e2f2-970d-4764-bc2e-c29b24797c61\946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48.exe

Filesize
816KB

MD5
9f91afdb58b312a555db2978d7157150

SHA1
96d3de3ac3ca32efcc3d911b0389e13f43ae1c13

SHA256
946e4a86f1cb22fab17f7e3a9a0422421e781b99357436e816ddb00e5154ed48

SHA512
9596e362858b1484cb6e566cac32c394a9e26b2cbc278afa14e046a9dc0d12b75ae1e76e71d43cc6287e64a47eec35328275aa86f3cbec7c6c0dc836ca5608ca

Download Submit
memory/1796-20-0x0000000004580000-0x000000000461B000-memory.dmp

Filesize
620KB

Download
memory/2304-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2304-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4616-1-0x0000000004750000-0x00000000047E3000-memory.dmp

Filesize
588KB

Download
memory/4616-2-0x0000000005FF0000-0x000000000610B000-memory.dmp

Filesize
1.1MB

Download
memory/5104-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5104-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5104-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5104-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5104-3-0x0000000000400000-0x0000000000537000-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