djvu | 08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81

General

Target

08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
Size

798KB
MD5

095c983376efd09d7885c9f05dd96ac4
SHA1

5d6b072b3aecc2f4bb8dbcbd2febb3915a94eec5
SHA256

08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81
SHA512

99a6e44f6bc6b034ca4107b3bcb225a984187129eac3711888f93fff93fbe5f6ffa3008fb63a7d04fec5fde6ba9d48d1af1e3382a4a5fbc770a7653f62bf815d
SSDEEP

12288:WUXSAtFLIv8lmROX1CrTPmvouVDbvCDg8QP4dbas5K3g4n:vhLI0eLrVIDLKSGK35

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/4928-2-0x0000000003D10000-0x0000000003E2B000-memory.dmp	family_djvu
behavioral1/memory/4036-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4036-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3668-37-0x0000000000400000-0x0000000002013000-memory.dmp	family_djvu
behavioral1/memory/4660-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/4660-39-0x0000000000400000-0x0000000000537000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
5048	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-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a48695e0-630f-4785-be6f-eb29f0438d5f\\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe\" --AutoStart"	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.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
3	api.2ip.ua
13	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4928 set thread context of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 3668 set thread context of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91

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
4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
4660	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
4660	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4928 wrote to memory of 4036	4928	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	83
PID 4036 wrote to memory of 5048	4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	88
PID 4036 wrote to memory of 5048	4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	88
PID 4036 wrote to memory of 5048	4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	88
PID 4036 wrote to memory of 3668	4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	89
PID 4036 wrote to memory of 3668	4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	89
PID 4036 wrote to memory of 3668	4036	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	89
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91
PID 3668 wrote to memory of 4660	3668	08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe	91

C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
"C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
  "C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4036
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\a48695e0-630f-4785-be6f-eb29f0438d5f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:5048
- - C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
    "C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3668
  - - C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe
      "C:\Users\Admin\AppData\Local\Temp\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4660

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
e4cacc9fa4adc8a6751aaf917c99e447

SHA1
d27c0b41d3fe6627c82ea3e6e762b1474f64ba51

SHA256
6ebb6b38a3cab01ca3d714f8df8b1d1dc0f159922fe9ae5e104dcd27c59eaf30

SHA512
fc104a463bf08270217f88841c8690dcb264abeebf8bd78dfda2dd2bd4fa85231dc7aede74e427483065ef3e6ef3f2c7e73c1c67dc274861da3421ea35927a80

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
b31d4c0d35882b0ef7f61ab77d35debf

SHA1
328ed6fcd3e0f181088ff608bb48cf37059a8496

SHA256
533031b6cfa0f2e4fbeb740d82b7e8386abe396056347f2fc5298878eeb63253

SHA512
6bccc2f20e4687fcb2c18dbf0aee772fc445bdaad68d89bcac854e8e5c83675e2328e2903b00e835a3dda612425d5c3165510a58ec8be5034b4dd4ecf999eaca

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

Filesize
392B

MD5
82899636889e7132f9b93d23d755fe4d

SHA1
17f55ff788d5d62bdc8cea3bfb0ea338237b38e6

SHA256
5de75c4c97b1059af40885ab1816b9a8dc7d5968b3b099e0bde1233c957231d3

SHA512
6b2bd545223497a852ff769d3f45ec8fa1eafc752521559d1796363afde708aff52149ab8f48b311fd83bfa83d891c682557d243832fc83c3edbab4f1e77e016

Download Submit
C:\Users\Admin\AppData\Local\a48695e0-630f-4785-be6f-eb29f0438d5f\08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81.exe

Filesize
798KB

MD5
095c983376efd09d7885c9f05dd96ac4

SHA1
5d6b072b3aecc2f4bb8dbcbd2febb3915a94eec5

SHA256
08e4c49f092ea46a49d421f4dc82670f2632be3a972c2b20783625beb81b7d81

SHA512
99a6e44f6bc6b034ca4107b3bcb225a984187129eac3711888f93fff93fbe5f6ffa3008fb63a7d04fec5fde6ba9d48d1af1e3382a4a5fbc770a7653f62bf815d

Download Submit
memory/3668-23-0x0000000000400000-0x0000000002013000-memory.dmp

Filesize
28.1MB

Download
memory/3668-37-0x0000000000400000-0x0000000002013000-memory.dmp

Filesize
28.1MB

Download
memory/4036-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4036-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4660-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4928-1-0x0000000002020000-0x00000000020BC000-memory.dmp

Filesize
624KB

Download
memory/4928-2-0x0000000003D10000-0x0000000003E2B000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads