djvu | db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0

General

Target

db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
Size

792KB
MD5

20993754a99d0079eb09d268a7ae0152
SHA1

0b8f94f30db044fe623901c2ebaad1473a6914a3
SHA256

db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0
SHA512

cdd4c6207b24528ba0509d8dd9863b9db5d812239d2e06befee3bc1ba9328707cb6337e0f713b1de24d2c1e17dfe3ad7ecf1374e676e5f8bbd8ba3a39d72d27a
SSDEEP

12288:mBi4YSFa34Zi/59I7BL/E4Zo737v9ZH+2PMUPuaqamsXQIP2veGorj+AKJspS0Uu:GYSFaImq7vof9ZH+kBzbmsRo46AScfK

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral1/memory/1872-2-0x0000000003D30000-0x0000000003E4B000-memory.dmp	family_djvu
behavioral1/memory/3720-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3720-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3720-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3720-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3720-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1820-37-0x0000000000400000-0x0000000002012000-memory.dmp	family_djvu
behavioral1/memory/1844-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-39-0x0000000000400000-0x0000000000537000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
384	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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c8b4993b-bc08-4d17-8971-97f8b19fd573\\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe\" --AutoStart"	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.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
3	api.2ip.ua
4	api.2ip.ua
16	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1872 set thread context of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1820 set thread context of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.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
3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
1844	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
1844	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 1872 wrote to memory of 3720	1872	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	82
PID 3720 wrote to memory of 384	3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	83
PID 3720 wrote to memory of 384	3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	83
PID 3720 wrote to memory of 384	3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	83
PID 3720 wrote to memory of 1820	3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	84
PID 3720 wrote to memory of 1820	3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	84
PID 3720 wrote to memory of 1820	3720	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	84
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86
PID 1820 wrote to memory of 1844	1820	db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe	86

C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
"C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
  "C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3720
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c8b4993b-bc08-4d17-8971-97f8b19fd573" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:384
- - C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
    "C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1820
  - - C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe
      "C:\Users\Admin\AppData\Local\Temp\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1844

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

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
6b5dad23fd7edd2c9daf944abc5d5341

SHA1
63a720a1bd0d9e2ecf288f11529f00256970577d

SHA256
e398b27255350eb1740b6851d4ca1faabc2b8c5ddd8caa791a47fc15af730060

SHA512
870f71e1f8724c984d51600080c43562303263c5ae4b9bf648fcf28909a88141a00db0e88b5ec52fc938c81ba78cb31a92a60792ff74b2369fdf10932d7e540c

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
e68dbf53ecbd4e125cae7ea80dce996f

SHA1
1ccd133cd5f72cc9f82a7974f8a462a160bf2789

SHA256
b60d85e6407d85abad8bbd306b2b87f4f2cb9aa535ad1cb32b2b6b5a6fff63a7

SHA512
fa63147f20023d5ead5ff6ad3c4a97fa942d8ee8a15b9a0c2b6426f5bfe0b9fcaa51feb9f0054405db77fd26678e28619a2ead6a8791745e79b481e54a9bf994

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

Filesize
392B

MD5
b7fc8d1aba6762808118908e1e6ead68

SHA1
58ef3724471024d7a6b4ffa1ddfa852aafe146e4

SHA256
8b8493c131a157df937c74e6deb25045e24c8e76aed6212dcc938dcade83227f

SHA512
45ce4fb059e297598a68b6faa60797243528c850e1fcbe6f59fa9b2f05c317c612895e440e7f305a36e6438a902c50f0bdb522bc9db6a299455d304960d57bd5

Download Submit
C:\Users\Admin\AppData\Local\c8b4993b-bc08-4d17-8971-97f8b19fd573\db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0.exe

Filesize
792KB

MD5
20993754a99d0079eb09d268a7ae0152

SHA1
0b8f94f30db044fe623901c2ebaad1473a6914a3

SHA256
db80fe864b6e9fc64be43b0115da8dedcaca4e94021b871dd433bd67b3e272d0

SHA512
cdd4c6207b24528ba0509d8dd9863b9db5d812239d2e06befee3bc1ba9328707cb6337e0f713b1de24d2c1e17dfe3ad7ecf1374e676e5f8bbd8ba3a39d72d27a

Download Submit
memory/1820-23-0x0000000000400000-0x0000000002012000-memory.dmp

Filesize
28.1MB

Download
memory/1820-37-0x0000000000400000-0x0000000002012000-memory.dmp

Filesize
28.1MB

Download
memory/1844-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1844-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1872-1-0x0000000003C20000-0x0000000003CBD000-memory.dmp

Filesize
628KB

Download
memory/1872-2-0x0000000003D30000-0x0000000003E4B000-memory.dmp

Filesize
1.1MB

Download
memory/3720-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3720-19-0x0000000000400000-0x0000000000537000-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