djvu | db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48

Analysis

max time kernel
143s
max time network
126s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
23/04/2024, 07:15

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General

Target
db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
Size 828KB
Sample240423-h29s8aed7s
SHA256 db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48
MD5 59b8e78beeca156419beb4f2e70e53b6
SHA1 be2c403748d3f8cc05f1ac2ea79a4da703edc486
SHA512 595b1dec42c7791a823752c3b2f34a354d21d58768e1fac60423a8a6326cbafed4d8aeb8b276a41d61827600c7029c4a1514ccc771169ef5bc02c51802663a3c
SSDEEP 24576:9exYwsy5Rj1CTODVqzH6y45cHkpKgPBCX8:0x1syX1CRaeky
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.bgzq
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: 0864PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/4216-2-0x0000000006100000-0x000000000621B000-memory.dmp	family_djvu
behavioral2/memory/3360-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3360-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3360-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3360-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3360-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2436-39-0x0000000000400000-0x0000000000537000-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
2724	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-1-5-21-3777591257-2471171023-3629228286-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\02575b12-c94e-4ad0-8b25-d16f28951dcd\\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe\" --AutoStart"	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.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 4216 set thread context of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4812 set thread context of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82

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
3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
2436	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
2436	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 4216 wrote to memory of 3360	4216	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	77
PID 3360 wrote to memory of 2724	3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	78
PID 3360 wrote to memory of 2724	3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	78
PID 3360 wrote to memory of 2724	3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	78
PID 3360 wrote to memory of 4812	3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	79
PID 3360 wrote to memory of 4812	3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	79
PID 3360 wrote to memory of 4812	3360	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	79
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82
PID 4812 wrote to memory of 2436	4812	db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe	82

C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
"C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
  "C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3360
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\02575b12-c94e-4ad0-8b25-d16f28951dcd" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:2724
- - C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
    "C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4812
  - - C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
      "C:\Users\Admin\AppData\Local\Temp\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2436

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 e5122be38e5166cc4b0fd2a070767c6bdbe8e22dcfbecab9db76088fe35fe219
MD5 e23ea4aa84dd598b2ab7b9498cde893d
SHA1 98a5422e21b88f9a639f3ab959bc387a228536eb
SHA512 7e65dc4c2a353fb1e31d0831a0dffda85df8a834c63d36ee57233a9bbd2d2bee082795de27328a34edb47e4777f88a98cee352d229b611b32354c96ef01ba2e4
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 7389a09e9482eebb15ecbd96469e47bef1cc11726dadb8ddb639b1148b7c55f1
MD5 6380bca1b38fff6494eeacb72bc7172d
SHA1 61c048f50201c2672eed839fe44db5ba0bc29dc2
SHA512 c49e50b1e18d5b2acb8cf32c3d2c29b00cf3837db27c9a215a774fe2868a2bd02c8664018a691ed42a476fee8c2785e584621a4f1e9ff1c89b5d010217eff171
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 e359776a5fda64107133b15dfb952ceb891dafbdfe0a27a075be493549401f58
MD5 b2310f07dc15f4b03c68dc26660dd2e4
SHA1 a12bfa8b016717dbe0859f29e5667929cddbd160
SHA512 5fc6c83abb55f2f21629885c1e74b6d3d8ddc1ac124d5e7f332892925e4104eb3bff150a8ef68df13fbdd71ba9af49f92f3f09ed2a57bff08e1bfc618b47da87
MD5 SHA1 SHA512

Submit Download

db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe

Path C:\Users\Admin\AppData\Local\02575b12-c94e-4ad0-8b25-d16f28951dcd\db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48.exe
Size 828KB
SHA256 db158ed0707ccc0adc04b737d2f5c5a7fefeb84ac90f80a15b94fa76db9aee48
MD5 59b8e78beeca156419beb4f2e70e53b6
SHA1 be2c403748d3f8cc05f1ac2ea79a4da703edc486
SHA512 595b1dec42c7791a823752c3b2f34a354d21d58768e1fac60423a8a6326cbafed4d8aeb8b276a41d61827600c7029c4a1514ccc771169ef5bc02c51802663a3c
SSDEEP 24576:9exYwsy5Rj1CTODVqzH6y45cHkpKgPBCX8:0x1syX1CRaeky
MD5 SHA1 SHA512 SSDEEP

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memory/2436-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2436-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3360-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3360-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3360-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3360-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3360-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4216-2-0x0000000006100000-0x000000000621B000-memory.dmp

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memory/4216-1-0x00000000047A0000-0x0000000004837000-memory.dmp

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memory/4812-20-0x0000000004500000-0x0000000004596000-memory.dmp

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