djvu | d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d

General

Target

d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
Size

807KB
MD5

5435b6a8f8dabe63910f1e9e4d436e5f
SHA1

a9e66834552de4d90d205d8b7c349e0d64d6f65f
SHA256

d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d
SHA512

748179129dd992654d01f8397f203840bf16fefbe125e09f455c8569b20ccf6c022022cf8188fa9c942c1d515b306300a19fe19388f1a24388b5858d596e7ca6
SSDEEP

12288:Kupoo6qqaUYbgUaK5agd9dDOL21+Y8aUnEunsDTDENagBhWZDaVs3Uw:tp56qqauOaU9ECDUEhr8CEw

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/4068-2-0x0000000003E40000-0x0000000003F5B000-memory.dmp	family_djvu
behavioral2/memory/4976-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4976-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4976-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4976-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4976-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4080-37-0x0000000000400000-0x0000000000537000-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

1312 icacls.exe

pid	process
1312	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6464a2bf-0536-4758-a18c-38de0c665b6b\\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe\" --AutoStart"	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.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:

d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe

description	pid	process	target process
PID 4068 set thread context of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 set thread context of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.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:

d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe

pid	process
4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
4080	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
4080	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe

C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4068

C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4976

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\6464a2bf-0536-4758-a18c-38de0c665b6b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1312

C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4720

C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4080

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

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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
5e85d0a3ffd5fb14ca1f584159a992b1

SHA1
cf9f2b2ee81713a941373c5a5c411ec4f2399fd9

SHA256
1be4bbef28be98619072f126e4607094807d8600e1a684108b0b6c2b15ea7d10

SHA512
541b9227b2175a2358ea950e95edeeb7ab3057ad16f51a3f952fbafdfdfa76dc2ee4003b988c99a49c34ec9402f1dcbe34c4214b951d22815506f160cff7e25f

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

MD5
ec2848c0de350bdd484b1403dd77f42b

SHA1
b6c165c91898b6cd214881ee8a18648ff42f034f

SHA256
93e7408f4ac30e32be97320e5ecd069fa6461d6a9e861b1ebec925ee6c44523d

SHA512
7a1f4755533cbbb6693f62ccdf962ccb9ae74728aebb0ae891e4a6fa61bbea95297754b53e8dd68374453f43c47764dc5d8c3012c82507c006b65b6fca41e48f

Download Submit
C:\Users\Admin\AppData\Local\6464a2bf-0536-4758-a18c-38de0c665b6b\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
Filesize
807KB

MD5
5435b6a8f8dabe63910f1e9e4d436e5f

SHA1
a9e66834552de4d90d205d8b7c349e0d64d6f65f

SHA256
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d

SHA512
748179129dd992654d01f8397f203840bf16fefbe125e09f455c8569b20ccf6c022022cf8188fa9c942c1d515b306300a19fe19388f1a24388b5858d596e7ca6

Download Submit
memory/4068-1-0x0000000002330000-0x00000000023C5000-memory.dmp

Filesize
596KB

Download
memory/4068-2-0x0000000003E40000-0x0000000003F5B000-memory.dmp

Filesize
1.1MB

Download
memory/4080-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4080-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4976-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4976-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4976-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4976-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4976-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4068 wrote to memory of 4976	4068	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4976 wrote to memory of 1312	4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	icacls.exe
PID 4976 wrote to memory of 1312	4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	icacls.exe
PID 4976 wrote to memory of 1312	4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	icacls.exe
PID 4976 wrote to memory of 4720	4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4976 wrote to memory of 4720	4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4976 wrote to memory of 4720	4976	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
PID 4720 wrote to memory of 4080	4720	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe	d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads