djvu | 22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299

General

Target

22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
Size

716KB
MD5

2b6b52df150d245e425f056626740029
SHA1

9770b7035564b9e740f7e947e970d5a7beb0717c
SHA256

22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299
SHA512

1a5035fccdcee9f795794648012840b71519fce5fec83c9303d5b08fd128a444bb646c509a652085ad7b24c343a24b8db68d5868e0f70103b0e55bd2acb5999e
SSDEEP

12288:KHkMkHn1sDdDRu5cTgmWYNFhk+SLJnKsRKkNIO0Ydg:KHkHn1sDdNk6gnYXuJnq9

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/2384-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2384-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2384-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3436-4-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral2/memory/2384-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2384-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4936-37-0x0000000000400000-0x0000000000537000-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

3888 icacls.exe

pid	process
3888	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2994005945-4089876968-1367784197-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\31bd9884-ca55-4a1e-b28e-cc0269b9e295\\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe\" --AutoStart"	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.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

6 api.2ip.ua
1 api.2ip.ua
2 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe

description	pid	process	target process
PID 3436 set thread context of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 set thread context of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.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:

22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe

pid	process
2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
4936	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
4936	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe

C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3436

C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2384

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\31bd9884-ca55-4a1e-b28e-cc0269b9e295" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:3888

C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:904

C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
"C:\Users\Admin\AppData\Local\Temp\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4936

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
7bb5a14437331aad24915a3d8546fbc1

SHA1
9a5570c07af0c0cde02858f61e1c7094f5a70f38

SHA256
42397d9f3c8164d4cef19fc169d7bcea77a3ea7e9bcb8cfa7db2ff0bbd3a7e00

SHA512
a2333a078be981eafe3f666ff3944cd3b28279a9da99f354014d81d80e98a0effabff2a8f5ab5fba61f7de9e49e2af3112dda6b28678192a1d80d2ca22004f13

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
041e4967658db3c4b3757d18e5f6c0b1

SHA1
b9895ee3304e435b9cb3bb4f8e3b0bac360b30d4

SHA256
3394e648a2778f8bbd661e5f951295e1dc9e22e4be730623641ffde579147139

SHA512
0f2435d56f937f000add768d51394a77f3439b0c249ed911eff872b9962d090d5dac1b3d6f0be3f96f50fa2001055cb72c5b9240bd6e7ae08631899b70b634c2

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

MD5
0b0d1046c4f9c3b91e62177c52f01c90

SHA1
cab5c94629e122b14cc182ffc3439a83d94a1ba2

SHA256
308066d479013b1d270011fa81264984f0e0ae228841a39cfb28a4ab127433df

SHA512
bd654912ed80c28b0c8c819f59e283d25a60767bf1d6a1e3b67f0025ad53fbbe1c6f95204eee7f91569b012fb1fb77407dd681270bdd7fcb5d8918bc4adc3730

Download Submit
C:\Users\Admin\AppData\Local\31bd9884-ca55-4a1e-b28e-cc0269b9e295\22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
Filesize
716KB

MD5
2b6b52df150d245e425f056626740029

SHA1
9770b7035564b9e740f7e947e970d5a7beb0717c

SHA256
22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299

SHA512
1a5035fccdcee9f795794648012840b71519fce5fec83c9303d5b08fd128a444bb646c509a652085ad7b24c343a24b8db68d5868e0f70103b0e55bd2acb5999e

Download Submit
memory/2384-2-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2384-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3436-4-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Filesize
1.1MB

Download
memory/3436-1-0x0000000004A20000-0x0000000004AB6000-memory.dmp

Filesize
600KB

Download
memory/4936-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4936-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 3436 wrote to memory of 2384	3436	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 2384 wrote to memory of 3888	2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	icacls.exe
PID 2384 wrote to memory of 3888	2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	icacls.exe
PID 2384 wrote to memory of 3888	2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	icacls.exe
PID 2384 wrote to memory of 904	2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 2384 wrote to memory of 904	2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 2384 wrote to memory of 904	2384	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe
PID 904 wrote to memory of 4936	904	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe	22c09223dc16c6c60dd17b582d4b9372a122b1a2b3eeaf778caa3c5dc7b00299.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads