djvu | f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748

General

Target

f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
Size

712KB
MD5

c92a00eaa04e468e05cda7ceefde78f9
SHA1

c8e97bbf322fe5c172bdbf73ad3bb8f0d1e71cec
SHA256

f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748
SHA512

ba008253b3d77b43828bc3a548ace5c5ca4963ee20f85af0ce1d6bc91cb02aa76ba3d5413f82b684ddaede2e002ece4fb1c4d88bc7fa92187448093e5c06b190
SSDEEP

12288:Kb3QysPnlgbUwq3p0pgNFJT+/9OeRY+O7xOQbRRiJ+uBbWIWzn2az7ExI:K8Xlkqipa+ldY/T0rXWtvl

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 15 IoCs

resource	yara_rule
behavioral2/memory/1784-2-0x00000000049D0000-0x0000000004AEB000-memory.dmp	family_djvu
behavioral2/memory/2472-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2472-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2472-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2472-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2472-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2040-30-0x0000000000400000-0x0000000000537000-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
1728	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-1-5-21-293923083-2364846840-4256557006-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\606be088-77ef-45ff-8748-b2f9d7991115\\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe\" --AutoStart"	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	api.2ip.ua
3	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1784 set thread context of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1632 set thread context of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.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
2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
2040	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
2040	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 1784 wrote to memory of 2472	1784	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	80
PID 2472 wrote to memory of 1728	2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	81
PID 2472 wrote to memory of 1728	2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	81
PID 2472 wrote to memory of 1728	2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	81
PID 2472 wrote to memory of 1632	2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	82
PID 2472 wrote to memory of 1632	2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	82
PID 2472 wrote to memory of 1632	2472	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	82
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85
PID 1632 wrote to memory of 2040	1632	f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe	85

C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
"C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
  "C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2472
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\606be088-77ef-45ff-8748-b2f9d7991115" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1728
- - C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
    "C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1632
  - - C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe
      "C:\Users\Admin\AppData\Local\Temp\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2040

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\Local\606be088-77ef-45ff-8748-b2f9d7991115\f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748.exe

Filesize
712KB

MD5
c92a00eaa04e468e05cda7ceefde78f9

SHA1
c8e97bbf322fe5c172bdbf73ad3bb8f0d1e71cec

SHA256
f70314cb044a744897f7f50927274dd4f814a4e1f373ad98dcb3ae9986815748

SHA512
ba008253b3d77b43828bc3a548ace5c5ca4963ee20f85af0ce1d6bc91cb02aa76ba3d5413f82b684ddaede2e002ece4fb1c4d88bc7fa92187448093e5c06b190

Download Submit
memory/1784-2-0x00000000049D0000-0x0000000004AEB000-memory.dmp

Filesize
1.1MB

Download
memory/1784-1-0x0000000003190000-0x000000000322F000-memory.dmp

Filesize
636KB

Download
memory/2040-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-16-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2040-18-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-12-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2472-6-0x0000000000400000-0x0000000000537000-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