djvu | 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181

General

Target

2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
Size

808KB
MD5

bb62a719079f90cf8a83271009403357
SHA1

33db847b56d744a7306ee6d284e346bee7c7a1ba
SHA256

2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181
SHA512

f09036502cb6ac7cb81df358ccfae65f2ca178760619e484f51a49c3bd262c87262c6de39563f49399687cb82b2918da35eeb7ea91829359e37f7c6502db1156
SSDEEP

12288:YeXdQ+QZ+rBMQQ/csKFxlkRD7oDTPEt4w+b6gA9NP8liSIgdbC:YsPQsrSPWaRD8HcT++nWdb

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

Processes:

resource	yara_rule
behavioral2/memory/4088-2-0x0000000003DF0000-0x0000000003F0B000-memory.dmp	family_djvu
behavioral2/memory/3880-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3880-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3880-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3880-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3880-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/944-37-0x0000000000400000-0x0000000000537000-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

2300 icacls.exe

pid	process
2300	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f84af919-aa8d-479d-ba17-383519b94206\\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe\" --AutoStart"	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.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
6 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

description	pid	process	target process
PID 4088 set thread context of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 set thread context of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.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:

2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

pid	process
3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
944	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
944	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4088

C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3880

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f84af919-aa8d-479d-ba17-383519b94206" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2300

C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4728

C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:944

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
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
3715dbc726cea47be6bcac5610f3b0df

SHA1
9244e50cb1bb3abc1be87a7845f1d480d92a15c9

SHA256
b89b99c6390790f1fcb9ad0fa5f7ffa947f870a9941296ac84548e3e8ea5143d

SHA512
846492bc921237ababde6ced8b8636760638382e99aa190dbae11e4070b2ea8d7b6a05235b9b11a0b5b378f350282a2fcb845ff4a31b0314d147b5677a926b7c

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
1e637ddde3df405c5128fcbf9f30c340

SHA1
602539df104ba94c5445afa61a477da42883d203

SHA256
6badc31d96968ab84ac14b6b057cf4c25b4efd6a4ef08fbe483737292da5ad11

SHA512
e95d94d04f9d15ecaed38262fcdaca0d3a9daf6ed417d066ee0156067fb9dfce62f0e0cae9ccc9d1eb8f0090c6017bb3860eb8a00a40dd961077f465da47f78b

Download Submit
C:\Users\Admin\AppData\Local\f84af919-aa8d-479d-ba17-383519b94206\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
Filesize
808KB

MD5
bb62a719079f90cf8a83271009403357

SHA1
33db847b56d744a7306ee6d284e346bee7c7a1ba

SHA256
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181

SHA512
f09036502cb6ac7cb81df358ccfae65f2ca178760619e484f51a49c3bd262c87262c6de39563f49399687cb82b2918da35eeb7ea91829359e37f7c6502db1156

Download Submit
memory/944-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/944-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3880-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3880-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3880-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3880-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3880-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4088-2-0x0000000003DF0000-0x0000000003F0B000-memory.dmp

Filesize
1.1MB

Download
memory/4088-1-0x0000000002320000-0x00000000023B9000-memory.dmp

Filesize
612KB

Download

description	pid	process	target process
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4088 wrote to memory of 3880	4088	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 3880 wrote to memory of 2300	3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	icacls.exe
PID 3880 wrote to memory of 2300	3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	icacls.exe
PID 3880 wrote to memory of 2300	3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	icacls.exe
PID 3880 wrote to memory of 4728	3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 3880 wrote to memory of 4728	3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 3880 wrote to memory of 4728	3880	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
PID 4728 wrote to memory of 944	4728	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe	2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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