djvu | 143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a

General

Target

143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
Size

732KB
MD5

f5dc9ce8fdcf4b5957d13f3d50ddaa51
SHA1

0f7aa15f74f755c0b316b19db8643840c7715805
SHA256

143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a
SHA512

e358544a8bf6803aad7c8c6f238dc941a744cf6cbee1676bdfa9141bd1e21f8088c4bf3aea315a11e26a5d1d60e3d5605ad357246964dfc439a9381c4f53742b
SSDEEP

12288:j9Cxxya0HOiuSdAscJV6aUUtFe5ah+Gz7oEi1SIBSwIkTc7qn0zK:j9SSS6gkadz78RSSTr0zK

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 17 IoCs

resource	yara_rule
behavioral1/memory/4920-2-0x00000000024F0000-0x000000000260B000-memory.dmp	family_djvu
behavioral1/memory/1132-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1132-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1132-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1132-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1132-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-42-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1888-45-0x0000000000400000-0x0000000000537000-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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2152	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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8da6478a-f8d7-42a4-9878-a4258fbe003e\\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe\" --AutoStart"	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.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
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4760 set thread context of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84

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
1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
1888	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
1888	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 4920 wrote to memory of 1132	4920	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	80
PID 1132 wrote to memory of 2152	1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 1132 wrote to memory of 2152	1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 1132 wrote to memory of 2152	1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	81
PID 1132 wrote to memory of 4760	1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	82
PID 1132 wrote to memory of 4760	1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	82
PID 1132 wrote to memory of 4760	1132	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	82
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84
PID 4760 wrote to memory of 1888	4760	143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe	84

C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
"C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4920
- C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
  "C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1132
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\8da6478a-f8d7-42a4-9878-a4258fbe003e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2152
- - C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
    "C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4760
  - - C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe
      "C:\Users\Admin\AppData\Local\Temp\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1888

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
84721cd35068ddfc92aa0a4c829fbd2a

SHA1
71d7e227e0f3fcbb585598d0f3757a8935b748ce

SHA256
bf8250097eb58e963c7cd636093d2a332647af517ad22ddebe1765703b8dd199

SHA512
f08b89715c28ae36927316d6fca1716dbd9e935edf9d7e979586c4e4610fc29c83514e2385dbf43e7227f8275603c5cbd85c2a098be6ada95aee1a24c5e23dfc

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
03a5a8ba9ef3e1cb79271b6a4fd2352a

SHA1
8529de9acab1bad0d4a5a5bb2ea78738691164cf

SHA256
a0bbd08c70add83d9587d083ef4d380bb7ddec938fa84c1850ff8667ed644c0e

SHA512
69575afb6313f436c731f61d53c6ff4a439aee841d04163b23e39d27e1fdb7815c9f476cdd420700a0496747029821cfbc378370e380024a3221fcfc3a893638

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

Filesize
392B

MD5
648736b0f030c32126ad697474edffc4

SHA1
d3a24c596a32d017b2113b79db99d37a2ce17c62

SHA256
99e6e68e60f7e8919d703ca6ce4319150c9a8c28b33734b5b8d59efc88d62b37

SHA512
6410b5e6fcbbbe7720e011a2ad41a87de42407e7856268f10d19ec9468dea9a5b613bffab3d2b1eb75da1ec33d3da74d4085313ee8888fcbfb7ce990b7862a99

Download Submit
C:\Users\Admin\AppData\Local\8da6478a-f8d7-42a4-9878-a4258fbe003e\143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a.exe

Filesize
732KB

MD5
f5dc9ce8fdcf4b5957d13f3d50ddaa51

SHA1
0f7aa15f74f755c0b316b19db8643840c7715805

SHA256
143292ae66435a28f45d126b6e75df33cb156cf9ae85ed16b01967d18bcfe50a

SHA512
e358544a8bf6803aad7c8c6f238dc941a744cf6cbee1676bdfa9141bd1e21f8088c4bf3aea315a11e26a5d1d60e3d5605ad357246964dfc439a9381c4f53742b

Download Submit
memory/1132-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1132-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1132-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1132-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1132-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-45-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1888-42-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4760-26-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/4760-27-0x0000000000400000-0x000000000080E000-memory.dmp

Filesize
4.1MB

Download
memory/4920-2-0x00000000024F0000-0x000000000260B000-memory.dmp

Filesize
1.1MB

Download
memory/4920-1-0x0000000002450000-0x00000000024E9000-memory.dmp

Filesize
612KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads