djvu | 17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad

Analysis

max time kernel
294s
max time network
300s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
07/05/2024, 22:28

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General

Target
17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
Size 800KB
Sample240507-2dlw2abd3x
SHA256 17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad
MD5 f6cb9b42910cc0f064408c85c25f0b7c
SHA1 4b4f4fb53193f18b7fb73043c597b43f9f1a6f79
SHA512 4c1239263f6b55fd381ce14b0b3d10fb4bef4021d0ef6cd3fbbde416dc780c56f1d854c941e2168fdcd26747f608713dd48137274fe1b9598e256d724f3558ab
SSDEEP 12288:O4AZvFF3PFI7kCiFdv82Y6U44YzO2Q7uCFx294pKkGDU7//kSwNyuQ42rpdIGAcf:O4gFFf27kCAq44wjU6EYA7H/oyu8pEc
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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 7 IoCs

resource	yara_rule
behavioral2/memory/4552-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2368-3-0x0000000004860000-0x000000000497B000-memory.dmp	family_djvu
behavioral2/memory/4552-2-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4552-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1716-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1716-33-0x0000000000400000-0x0000000000537000-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
1700	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-1-5-21-160447019-1232603106-4168707212-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\da0f736d-e086-43cf-9f5b-225d6550f656\\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe\" --AutoStart"	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.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
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2368 set thread context of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 4824 set thread context of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77

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
4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
1716	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
1716	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 2368 wrote to memory of 4552	2368	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	73
PID 4552 wrote to memory of 1700	4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	74
PID 4552 wrote to memory of 1700	4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	74
PID 4552 wrote to memory of 1700	4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	74
PID 4552 wrote to memory of 4824	4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	75
PID 4552 wrote to memory of 4824	4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	75
PID 4552 wrote to memory of 4824	4552	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	75
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77
PID 4824 wrote to memory of 1716	4824	17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe	77

C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
"C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
  "C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4552
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\da0f736d-e086-43cf-9f5b-225d6550f656" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1700
- - C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
    "C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4824
  - - C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
      "C:\Users\Admin\AppData\Local\Temp\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1716

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 26f7df2742be7eae0cecb3954ab69d2f1ad25c6b63a21e3a477ea34dee8301ae
MD5 af14424bd91fa356e225129fe451aacc
SHA1 4046dc95051bf8382196ff1fec36326c22dc1aae
SHA512 362068ce189ee00c318b574ebc8fc4f2e09add21f6c79aea8fe2f69ece44c0beaeb6c7fec7297a0b758ea5b8879ab0e9993c74ab262e200e289c05833e734179
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 0dc7b7220fbf0858c5cc36cd9f504f9414ef894eb3072a9b25d4cb50b8f28d5e
MD5 e5b40b19b2bb86b7b90f310a4f0d89de
SHA1 fd6dd438a0dd3cd50eddbfdc762d0f340edd4ba3
SHA512 1243a744faa4d95f60c7839df393b348ceb8b427a1bf70ee22b6c1b5b1e38ac1fb93ce49a135961f8dd0eb66fe3d39ab2a80e3083670847ab94ee58044a8c6bb
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 cc3443d04d8f88a46aa7a572a7b6e67c010a39d78e5d749542d9dabeb5673401
MD5 c432365507f540b62d7bb7745752d942
SHA1 575140d43420fbe2e19d14cc9e2e7ab3300be0c8
SHA512 438ef187b0a6f6b4963c4595c8aad7fa1a51e708f5e4db91588f8e2044b70549c01245918091c06881ec132b725d75a61778b7991b7e3b93f82f31dad509b782
MD5 SHA1 SHA512

Submit Download

17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe

Path C:\Users\Admin\AppData\Local\da0f736d-e086-43cf-9f5b-225d6550f656\17b004a1f2eb9d2ebc912e638783da059b252403dc4b96ada8e527dd74e7f0ad.exe
Size 448KB
SHA256 4deeefc73689aa0aae9f227f3fe685a60890244d8312b352594e776351af746a
MD5 b2cc77fc98ad674fac41951f07f024c2
SHA1 ff5067fec8ca07a38f150d231b9347d9f910fdbe
SHA512 2603433b7633d63102eb77e5854ae5557eb36bdc39503ec0fde85dea1906fe7e6598311560f6be40c878a8e1bb7b567c4a6b4185b9a2afb577624472eb6758a5
SSDEEP 12288:O4AZvFF3PFI7kCiFdv82Y6U44YzO2Q7uCFx+:O4gFFf27kCAq44wjUK
MD5 SHA1 SHA512 SSDEEP

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memory/1716-33-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-41-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-40-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-32-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1716-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/2368-3-0x0000000004860000-0x000000000497B000-memory.dmp

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memory/2368-1-0x0000000002FC0000-0x0000000003058000-memory.dmp

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memory/4552-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-2-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4552-21-0x0000000000400000-0x0000000000537000-memory.dmp

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