djvu | 947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
26/04/2024, 12:51

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
Size 797KB
Sample240426-p3y7facb22
SHA256 947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2
MD5 0cb5eee745d518bc94087f763180528e
SHA1 4b844c778d7ee255492be4a8b1298e4aeb2dd200
SHA512 ed46732281bca79344a3e92c1697a5e0fe40c010c8cb8441a4abe9fa939215265ec82e13d24be0a778b0873c05e4ef4d6568c8cf43eeb7d960b30705631c2dca
SSDEEP 12288:ja3XYmSqqJHcNRpBXegsn7PAw+lZcHEsBvjmVRZ0WmwHdTjCOF1FFvfwPFBK6GXQ:jxqRRSg2HkMBrMJHdTjCQd3wPVaT9+
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/3580-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3580-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3336-5-0x0000000005E80000-0x0000000005F9B000-memory.dmp	family_djvu
behavioral2/memory/3580-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3580-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3580-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3580-12-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-16-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-18-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3664-30-0x0000000000400000-0x0000000000537000-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
4648	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\\34e5d22e-19bb-4411-9e10-82cb9488b2f2\\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe\" --AutoStart"	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.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 3336 set thread context of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3932 set thread context of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.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
3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
3664	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
3664	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3336 wrote to memory of 3580	3336	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	80
PID 3580 wrote to memory of 4648	3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	82
PID 3580 wrote to memory of 4648	3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	82
PID 3580 wrote to memory of 4648	3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	82
PID 3580 wrote to memory of 3932	3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	83
PID 3580 wrote to memory of 3932	3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	83
PID 3580 wrote to memory of 3932	3580	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	83
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86
PID 3932 wrote to memory of 3664	3932	947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe	86

C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
"C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3336
- C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
  "C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3580
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\34e5d22e-19bb-4411-9e10-82cb9488b2f2" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4648
- - C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
    "C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3932
  - - C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
      "C:\Users\Admin\AppData\Local\Temp\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:3664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe

Path C:\Users\Admin\AppData\Local\34e5d22e-19bb-4411-9e10-82cb9488b2f2\947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2.exe
Size 797KB
SHA256 947ecb6437f9dac5bf41e9787c484ce474e8bfb7fc4d0d192a4816e007ab7ab2
MD5 0cb5eee745d518bc94087f763180528e
SHA1 4b844c778d7ee255492be4a8b1298e4aeb2dd200
SHA512 ed46732281bca79344a3e92c1697a5e0fe40c010c8cb8441a4abe9fa939215265ec82e13d24be0a778b0873c05e4ef4d6568c8cf43eeb7d960b30705631c2dca
SSDEEP 12288:ja3XYmSqqJHcNRpBXegsn7PAw+lZcHEsBvjmVRZ0WmwHdTjCOF1FFvfwPFBK6GXQ:jxqRRSg2HkMBrMJHdTjCQd3wPVaT9+
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3336-5-0x0000000005E80000-0x0000000005F9B000-memory.dmp

Download

memory/3336-1-0x00000000042B0000-0x0000000004348000-memory.dmp

Download

memory/3580-12-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3580-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3580-2-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3580-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3580-9-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3580-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-16-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-15-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-17-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-18-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-25-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3664-30-0x0000000000400000-0x0000000000537000-memory.dmp

Download