djvu | 5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77

Analysis

max time kernel
144s
max time network
125s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
21/04/2024, 16:25

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General

Target
5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
Size 757KB
Sample240421-tw5svsfd31
SHA256 5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77
MD5 5765cfe34f7a18df536c85340c87de9f
SHA1 9c0dc2fca8c7cea6afaed2181a7b91f1c2d6c068
SHA512 232ae7128c4935e2e9cd3d650e7cfe7a2733702b5568c44071129ff14e1e5758c178db0a692445cfafa8778dbaea008e002a4fd136debe0b9515e4fd5573fca7
SSDEEP 12288:dbn5RTEpxDzBnQSakBD7tXRUtu04xyWjPThPdRzDJvGo20Mf6Amz/v:ZupzBnQSasUs04bj7VdpJvGczAE
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://sajdfue.com/test1/get.php

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/3652-2-0x0000000006030000-0x000000000614B000-memory.dmp	family_djvu
behavioral2/memory/4588-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4588-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4588-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4588-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4588-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4536-39-0x0000000000400000-0x0000000000537000-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

pid	Process
2692	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-801765966-3955847401-2235691403-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\80a1ac95-e391-4a00-b4cb-352a24209170\\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe\" --AutoStart"	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.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.

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3652 set thread context of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 2484 set thread context of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
4536	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
4536	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 3652 wrote to memory of 4588	3652	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	79
PID 4588 wrote to memory of 2692	4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	82
PID 4588 wrote to memory of 2692	4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	82
PID 4588 wrote to memory of 2692	4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	82
PID 4588 wrote to memory of 2484	4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	83
PID 4588 wrote to memory of 2484	4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	83
PID 4588 wrote to memory of 2484	4588	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	83
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86
PID 2484 wrote to memory of 4536	2484	5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe	86

C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
"C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
  "C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4588
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\80a1ac95-e391-4a00-b4cb-352a24209170" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2692
- - C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
    "C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2484
  - - C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
      "C:\Users\Admin\AppData\Local\Temp\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 a4f8a8d0a1ff8f205baf3e08a5428cdefa5f0460152e97f9745fad690c3dbcae
MD5 4a49f0aa29aa9a5b5ee69b98bc01192a
SHA1 716ab68ae64dfeaab75200b9ef0206c250639fa7
SHA512 e97d9cdfcd6e46bc8394f9bf13653275b8c3f9caef1d8bc86744bee0bdddfaa0f8d02c233548443373e19f293aef89948eac7ef4c4ea73cd302ede2912eceee5
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 cf75be1ed3d0038f1c36aaee955235e98f41828e8cd98be8c7ce355561f5e84a
MD5 c24750f81bd052a78a8cd7edfcff3841
SHA1 b6baa33333f1c9572ce74d89283c2c379775c171
SHA512 669cc303cd5684b276c0c4354bf930e3a1b24cd6cce9464777aca5454b71bbe1e387dd478702985c576c722f5efe826cb4a5ff49138671719b310d2ba35e1aaf
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 88ff71a99cb9e1cc0aff41e6e8cc0220c496511e5f7220716cf03447efa865e6
MD5 1b92efce6fa86213f5846586ab94600d
SHA1 2c9551c84432c78a44a6e94f10cc152dcd052144
SHA512 0281eeb800e5bffd291355aa3ae66509ebac96b7a3ff692448d9144a6c0b442314264552ed40b4c48a4bcc0241151904528f986f54df5d560460a3333a75dd0a
MD5 SHA1 SHA512

Submit Download

5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe

Path C:\Users\Admin\AppData\Local\80a1ac95-e391-4a00-b4cb-352a24209170\5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77.exe
Size 757KB
SHA256 5eedc053565dd7e58bb5fe3ee9eabe198e160a3eeaa2c08af55b3adb977b4d77
MD5 5765cfe34f7a18df536c85340c87de9f
SHA1 9c0dc2fca8c7cea6afaed2181a7b91f1c2d6c068
SHA512 232ae7128c4935e2e9cd3d650e7cfe7a2733702b5568c44071129ff14e1e5758c178db0a692445cfafa8778dbaea008e002a4fd136debe0b9515e4fd5573fca7
SSDEEP 12288:dbn5RTEpxDzBnQSakBD7tXRUtu04xyWjPThPdRzDJvGo20Mf6Amz/v:ZupzBnQSasUs04bj7VdpJvGczAE
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2484-20-0x0000000005CD0000-0x0000000005D68000-memory.dmp

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memory/3652-1-0x0000000005F40000-0x0000000005FDD000-memory.dmp

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memory/3652-2-0x0000000006030000-0x000000000614B000-memory.dmp

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memory/4536-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4536-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4588-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4588-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4588-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4588-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4588-4-0x0000000000400000-0x0000000000537000-memory.dmp

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