djvu | ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4

General

Target

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
Size

730KB
MD5

199fdf6923013f6271d007c72f37462a
SHA1

510814d9cbe3104550f93de56d10038d5127144e
SHA256

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4
SHA512

f86ca7966404b015ac8287c7ed285cbce73ae047524ca85cb8b8c9bfdec36d59fddbd9b550105b5431718d602d042f2ed8425246cb8d58595822de583cba7f55
SSDEEP

12288:SKskRM1HgddS+VUbwfDLfua4Rr5X0en4BoaoahoHjixONUb9JAEk5ch6R/kpROP2:SK9M1H+FGMPGaMZOBsHjlUbgLqMR/kpF

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vehu
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: 0872PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2192-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2820-4-0x0000000004A40000-0x0000000004B5B000-memory.dmp	family_djvu
behavioral1/memory/2192-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2192-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1592-37-0x0000000000400000-0x0000000000537000-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

Processes:

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4472 icacls.exe

pid	process
4472	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\dbc36ed8-5d34-4568-aafe-b609c168dcfa\\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe\" --AutoStart"	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.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.

Processes:

flow ioc

3 api.2ip.ua
4 api.2ip.ua
17 api.2ip.ua

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
17	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exeba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

description	pid	process	target process
PID 2820 set thread context of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 set thread context of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exeba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

pid	process
2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
1592	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
1592	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exeba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exeba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
"C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
  "C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2192
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\dbc36ed8-5d34-4568-aafe-b609c168dcfa" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4472
- - C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
    "C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:5004
  - - C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
      "C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1592

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

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
6f6e3fca3096a0e7e7eb59d51f4a5350

SHA1
c978fa12d9045c593d5e7e097037ee465e09c3b2

SHA256
d27a9ba9c11dbd9c2b2bcb61a4128f457e7d15a3db20fad170588821e4003d78

SHA512
c45004cb6359a32eb55f1f2ff762ab948d79991ec890ceaf988d513ff9cd4dc0168deb2235b391b43ca8d69d960ba302fde0ed13a2b0e1dddbd63135f27cb546

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
2edcbd1bf4a3f84ba727551564eaf167

SHA1
b328db9e43f02b5bc2b19078875b8bc4d84fe82b

SHA256
d3568c64559201d0e7ab3368ea7b8ffcad0340187697421562ef822a959c02e8

SHA512
d461f621b114cdf0b07a318ba667944490f6b96fe98e7605b80613de4b6c8b4010af7b51494b3495909a77add056b6c1bd46414491cf10697fc12757aae577c4

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

Filesize
392B

MD5
48f1afc929872ff5938c47e092d20b4f

SHA1
72d0d65ede0e1ed3a831aa54d7cb9e6e018fe03d

SHA256
fc1f0f5deeb2fc464f0cf33aa5e124555469d15a971e37bb4efdb80766bdf9fd

SHA512
993a27cf96d56dbbb30c15a7c1d4f9e4b7e86963ed544f905dfd79b61352ceebafb241c8156d00893c1ff6a170e4e0114a27455e04c6a9034577d777a88d8e06

Download Submit
C:\Users\Admin\AppData\Local\dbc36ed8-5d34-4568-aafe-b609c168dcfa\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

Filesize
730KB

MD5
199fdf6923013f6271d007c72f37462a

SHA1
510814d9cbe3104550f93de56d10038d5127144e

SHA256
ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4

SHA512
f86ca7966404b015ac8287c7ed285cbce73ae047524ca85cb8b8c9bfdec36d59fddbd9b550105b5431718d602d042f2ed8425246cb8d58595822de583cba7f55

Download Submit
memory/1592-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1592-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2192-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2820-1-0x00000000049A0000-0x0000000004A3B000-memory.dmp

Filesize
620KB

Download
memory/2820-4-0x0000000004A40000-0x0000000004B5B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2820 wrote to memory of 2192	2820	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2192 wrote to memory of 4472	2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	icacls.exe
PID 2192 wrote to memory of 4472	2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	icacls.exe
PID 2192 wrote to memory of 4472	2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	icacls.exe
PID 2192 wrote to memory of 5004	2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2192 wrote to memory of 5004	2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 2192 wrote to memory of 5004	2192	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 5004 wrote to memory of 1592	5004	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads