djvu | 1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34

General

Target

1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
Size

778KB
MD5

128cb3b23a99602b960e363ea5d8ab8d
SHA1

170b709c487cb7bc8e8b295b3e290e3d5d822857
SHA256

1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34
SHA512

d665963d3991fa520de9005478e5e0b9b79b6f4ea6b89f0ffed25a8e0bcfa5bbf43b4be92a920b540f5851a8e5213175904785f7710778c2797d4c815bd55ed8
SSDEEP

12288:1Fo3OtAl/6tHuTukV0U4yG1G+OX8PyKhZWHHowigADnXlsZw7nG:19nHoSU4VHOX8drMHowiK

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4216-2-0x0000000004C60000-0x0000000004D7B000-memory.dmp	family_djvu
behavioral2/memory/932-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/932-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/932-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/932-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/932-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2936-39-0x0000000000400000-0x0000000000537000-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

1736 icacls.exe

pid	process
1736	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\6c2c53c8-78e9-4a58-8cc6-196b9d18a721\\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe\" --AutoStart"	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.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
7 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe

description	pid	process	target process
PID 4216 set thread context of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 set thread context of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.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:

1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe

pid	process
932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
2936	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
2936	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe

C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
"C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4216

C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
"C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:932

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\6c2c53c8-78e9-4a58-8cc6-196b9d18a721" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1736

C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
"C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1884

C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
"C:\Users\Admin\AppData\Local\Temp\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2936

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
cb9e9c73d3688b51ee1899e25cd1cc7e

SHA1
b2d472d87ac099a708b7536b5c30e5e6f0d28b7e

SHA256
382e6d80f80afb665a9c3065602a8fb4a6c3ff73c06a0a6937ffc178466d97a2

SHA512
74f1d7c3c68c0ae4ebc7b1c270c2138f578b78b591d8c6af4b7bb56fd4f23e5cebdf9748e7045521c72c000e5a4f35adce8e62951470e65c531f95b26b52a54e

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
dda029faa2a4721eb557b89f175f83f7

SHA1
1c380e9078ae1ae9f5e28296f0d2f3054d3e413d

SHA256
492846b0cd720b08ce4347f84b0642d9ea7fea93796810bd6a6e50c5e3860b9a

SHA512
b12911ee550fb2a27b66303c4bf30eda0fad2a4da4d86d8e8fae1feceab662d50150910c71c0256899218f40a34b4cd35926c2c6abf2a332cbcdc74a3bf46414

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

MD5
7ae23f540b98e5218bad493fe317518c

SHA1
62b1fd1b183e5e4d471fccb3de0697585200a357

SHA256
f0222310903d07e644e0001a6fc32e8a1533dde8e9343d96d539ed26e13aba03

SHA512
3106617dc89e87c18f5c8102182ec574584b888e9b42539eb795dcb2880404645cb1c19bc534b355a4059bdc36f095dd1f33b5e7219ca33227b118ca72aa4055

Download Submit
C:\Users\Admin\AppData\Local\6c2c53c8-78e9-4a58-8cc6-196b9d18a721\1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
Filesize
778KB

MD5
128cb3b23a99602b960e363ea5d8ab8d

SHA1
170b709c487cb7bc8e8b295b3e290e3d5d822857

SHA256
1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34

SHA512
d665963d3991fa520de9005478e5e0b9b79b6f4ea6b89f0ffed25a8e0bcfa5bbf43b4be92a920b540f5851a8e5213175904785f7710778c2797d4c815bd55ed8

Download Submit
memory/932-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/932-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/932-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/932-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/932-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1884-20-0x00000000032A0000-0x0000000003340000-memory.dmp

Filesize
640KB

Download
memory/2936-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2936-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4216-1-0x00000000032C0000-0x000000000335F000-memory.dmp

Filesize
636KB

Download
memory/4216-2-0x0000000004C60000-0x0000000004D7B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 4216 wrote to memory of 932	4216	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 932 wrote to memory of 1736	932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	icacls.exe
PID 932 wrote to memory of 1736	932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	icacls.exe
PID 932 wrote to memory of 1736	932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	icacls.exe
PID 932 wrote to memory of 1884	932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 932 wrote to memory of 1884	932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 932 wrote to memory of 1884	932	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe
PID 1884 wrote to memory of 2936	1884	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe	1bc682e06b02f4af9c1dd3818ca5043f3837175112ef17f806702be2c8eb1c34.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads