djvu | 944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286

General

Target

944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
Size

710KB
MD5

cca9237edd4e63088fea283e633dbd83
SHA1

5bcfc7b04f39607d284e830d4996eee55b27153f
SHA256

944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286
SHA512

0e7b51516dfe659815ea9ea16346e02b0399776e126b96b0d4843ff2c2cf18044c5c294b62e9ccfd8908987aa7ec7f50f07e0bd49cd31ede4b223d63352b239f
SSDEEP

12288:uy0//K9mlrtGLDpyLbhqwF6RgINv59/y9PGCBuEghjdiBJet0TmqM4EpIOp86:uy0nKElrtGLDpyLbi/y9PGCsEgh5iu6y

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/4796-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp	family_djvu
behavioral2/memory/2768-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2768-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2768-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2768-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2768-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/564-37-0x0000000000400000-0x0000000000537000-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

2092 icacls.exe

pid	process
2092	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\29d93a45-dca2-49f7-a52c-194dc5f5b181\\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe\" --AutoStart"	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.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:

944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe

description	pid	process	target process
PID 4796 set thread context of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 set thread context of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.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:

944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe

pid	process
2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
564	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
564	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe

C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
"C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4796

C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
"C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2768

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\29d93a45-dca2-49f7-a52c-194dc5f5b181" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2092

C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
"C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4740

C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
"C:\Users\Admin\AppData\Local\Temp\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:564

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
7575c39a544943a68ce6e709c586005a

SHA1
4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

SHA256
4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

SHA512
abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

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
bf76ac4a412972243d3010463dad33ac

SHA1
9fab9d7724cc4875e1754affe44562d8b35e3990

SHA256
7f9b97dfcb1b6647639f3f79ece1c67008766bc96a6719c2f8898319eeba3faf

SHA512
02c3e26d620c413a5a44f2313edb54f58797ea838fd80ad3334aa904f0ab54edce9a31032b376f44b019071247b2c78e84f007751be2b2fb177e9c1ffcc05767

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

MD5
f2dfaade87c46824df94f1a640877ed0

SHA1
07fe5d7ad4097b87c210bb46c31ce9909567ef08

SHA256
21a6bf6bffc0eba476841beb1b65da99bf96eef7bf0d794ecaf515a9847c9049

SHA512
6afd017ea562f4391f2f9a018aa91dbd1fbbe24f3016d25ff5b1a1c7418dbee4b76f1b4f86584f4dfdb78a619916ce0b672dba1a819bf5fe6279921be1b8a018

Download Submit
C:\Users\Admin\AppData\Local\29d93a45-dca2-49f7-a52c-194dc5f5b181\944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
Filesize
710KB

MD5
cca9237edd4e63088fea283e633dbd83

SHA1
5bcfc7b04f39607d284e830d4996eee55b27153f

SHA256
944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286

SHA512
0e7b51516dfe659815ea9ea16346e02b0399776e126b96b0d4843ff2c2cf18044c5c294b62e9ccfd8908987aa7ec7f50f07e0bd49cd31ede4b223d63352b239f

Download Submit
memory/564-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/564-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2768-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4796-2-0x0000000004AB0000-0x0000000004BCB000-memory.dmp

Filesize
1.1MB

Download
memory/4796-1-0x0000000004A10000-0x0000000004AAC000-memory.dmp

Filesize
624KB

Download

description	pid	process	target process
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4796 wrote to memory of 2768	4796	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 2768 wrote to memory of 2092	2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	icacls.exe
PID 2768 wrote to memory of 2092	2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	icacls.exe
PID 2768 wrote to memory of 2092	2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	icacls.exe
PID 2768 wrote to memory of 4740	2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 2768 wrote to memory of 4740	2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 2768 wrote to memory of 4740	2768	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe
PID 4740 wrote to memory of 564	4740	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe	944caafd53b910f522348b9d82241855b1e1dd055da2d7db4930eef673d2c286.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads