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
behavioral2/memory/3044-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3360-4-0x0000000004B00000-0x0000000004C1B000-memory.dmp	family_djvu
behavioral2/memory/3044-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3044-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3044-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3044-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4888-37-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

2284 icacls.exe

pid	process
2284	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-1-5-21-2551177587-3778486488-1329702901-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\93d94768-3423-45d1-9ad5-269d4327b022\\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

1 api.2ip.ua
2 api.2ip.ua
8 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exeba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

description	pid	process	target process
PID 3360 set thread context of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 set thread context of 4888	3568	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
3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
4888	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
4888	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:3360
- C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
  "C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3044
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\93d94768-3423-45d1-9ad5-269d4327b022" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2284
- - 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:3568
  - - C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
      "C:\Users\Admin\AppData\Local\Temp\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4888

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

Replay Monitor

Loading Replay Monitor...

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
746d6c3750e0397b0734b936db4a3f07

SHA1
4b82199c34e8ee7ee1fdb452e8195abb0d8d199c

SHA256
baaea697356411e354a3e8f19ea875a08f9386f49b2888906381e40498f861e6

SHA512
d123686e829102a541ab7d74690fce0d659679b5aebd653a7a37ec20b75df364601f386bd6bc7674f4c209f88651b2a85f826025eac7d1bbdd5d8e0847dc1b86

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

Filesize
392B

MD5
be28100df7fdfdeb768952a3df3fdc4c

SHA1
2e83e0ddaed5ce9a6cedb47de77787514b8ef554

SHA256
b5b24c3ac4aa3a001635642114b4912ad54ba8a7271207a9ecafe6bd5812c03a

SHA512
72ecf8d634eeabee9b5c266046d5745b71eca2e27b21dc42b69f2bf38825031a2d39e7a8792d03fac560ee4c603010b02eea7a3f2a41ac10132eb85994f902b3

Download Submit
C:\Users\Admin\AppData\Local\93d94768-3423-45d1-9ad5-269d4327b022\ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

Filesize
730KB

MD5
199fdf6923013f6271d007c72f37462a

SHA1
510814d9cbe3104550f93de56d10038d5127144e

SHA256
ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4

SHA512
f86ca7966404b015ac8287c7ed285cbce73ae047524ca85cb8b8c9bfdec36d59fddbd9b550105b5431718d602d042f2ed8425246cb8d58595822de583cba7f55

Download Submit
memory/3044-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3044-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3044-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3044-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3044-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3360-4-0x0000000004B00000-0x0000000004C1B000-memory.dmp

Filesize
1.1MB

Download
memory/3360-1-0x0000000004A60000-0x0000000004AF6000-memory.dmp

Filesize
600KB

Download
memory/4888-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4888-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3360 wrote to memory of 3044	3360	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3044 wrote to memory of 2284	3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	icacls.exe
PID 3044 wrote to memory of 2284	3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	icacls.exe
PID 3044 wrote to memory of 2284	3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	icacls.exe
PID 3044 wrote to memory of 3568	3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3044 wrote to memory of 3568	3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3044 wrote to memory of 3568	3044	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe
PID 3568 wrote to memory of 4888	3568	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe	ba42a69981f8eb4351cb6bf2f173334657420646b4dc8bef8caa2831513a92e4.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads