djvu | 242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f

General

Target

242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
Size

805KB
MD5

5fadb8694923a6670906dd6f243545d8
SHA1

3f1d4f5396e825f41c3ffcd6bc07e98b1a24cadb
SHA256

242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f
SHA512

a097f611a5b3f4c8bfcd16d5fbe3a32e82be3aa3680acf9f2c940b23d7eaacd6359659c9c5bc43f1235d27dc81fb8d191d82fb8194a116aef9bbed1898de67da
SSDEEP

12288:baIhow62CecBrbdxfJ2XmqTUmwjH3dnPy/DhgJdboVRHebz14uE59bL37:u202jcx79qsHGel+L

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 15 IoCs

resource	yara_rule
behavioral2/memory/1448-2-0x00000000041C0000-0x00000000042DB000-memory.dmp	family_djvu
behavioral2/memory/5064-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5064-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5064-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5064-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5064-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/788-37-0x0000000000400000-0x0000000000537000-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

pid	Process
4972	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-1-5-21-1230210488-3096403634-4129516247-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\1b6a6f0f-586c-4abc-a723-894cfcb71787\\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe\" --AutoStart"	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.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
2	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1448 set thread context of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 2344 set thread context of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83

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
5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
788	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
788	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 1448 wrote to memory of 5064	1448	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	78
PID 5064 wrote to memory of 4972	5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	79
PID 5064 wrote to memory of 4972	5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	79
PID 5064 wrote to memory of 4972	5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	79
PID 5064 wrote to memory of 2344	5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	80
PID 5064 wrote to memory of 2344	5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	80
PID 5064 wrote to memory of 2344	5064	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	80
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83
PID 2344 wrote to memory of 788	2344	242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe	83

C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
"C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
  "C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5064
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\1b6a6f0f-586c-4abc-a723-894cfcb71787" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:4972
- - C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
    "C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2344
  - - C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe
      "C:\Users\Admin\AppData\Local\Temp\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:788

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

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Downloads

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

Filesize
1KB

MD5
cb35bd9d6c5a4fd50a9263018bbd9784

SHA1
efec24f93d2af7bd01969c36870ebc928fa6c790

SHA256
be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612

SHA512
ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11

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
dccb4d653650f385378b36bee812f965

SHA1
ae637d056161c58adf3e303be6868047f998acf1

SHA256
83bf93d7a24063465383d0aca55f60bfb7148a93ced200644c382f0e900b98b2

SHA512
9ed0809afebcf2885e926fd681d5a2f9e04afa871574e04c8088c368c8eeeb4a0fda48c88ec832dfdb8367375b912d6ea34a0355c6d1ba600232137faaace27d

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

Filesize
392B

MD5
399324f0c2949794ba473ebf31d741fc

SHA1
fb29d0d415a3727e26e35030ac211aed71b0052a

SHA256
af613692cba65f23032865426e16b82c5f5d736e340ec706b5534f82b2940d81

SHA512
dfd708017f3627ba703101c10bef8c488828409ffe0cf188993ccb232b0151546b71e1f90b3d399035167cf5d2f2355171eb61e30bdb6f4d32f77a5e54fbfb60

Download Submit
C:\Users\Admin\AppData\Local\1b6a6f0f-586c-4abc-a723-894cfcb71787\242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f.exe

Filesize
805KB

MD5
5fadb8694923a6670906dd6f243545d8

SHA1
3f1d4f5396e825f41c3ffcd6bc07e98b1a24cadb

SHA256
242f9eff6769de53c0dd077d92b04f88c5be925a6db1fc001a0beb105614fa6f

SHA512
a097f611a5b3f4c8bfcd16d5fbe3a32e82be3aa3680acf9f2c940b23d7eaacd6359659c9c5bc43f1235d27dc81fb8d191d82fb8194a116aef9bbed1898de67da

Download Submit
memory/788-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/788-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1448-1-0x00000000025D0000-0x000000000266F000-memory.dmp

Filesize
636KB

Download
memory/1448-2-0x00000000041C0000-0x00000000042DB000-memory.dmp

Filesize
1.1MB

Download
memory/5064-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5064-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5064-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5064-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5064-19-0x0000000000400000-0x0000000000537000-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