Analysis
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max time kernel
145s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
28/01/2024, 04:22
Static task
static1
Behavioral task
behavioral1
Sample
7c2428bc20c16c8fd744c1216032336e.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
7c2428bc20c16c8fd744c1216032336e.exe
Resource
win10v2004-20231222-en
General
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Target
7c2428bc20c16c8fd744c1216032336e.exe
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Size
744KB
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MD5
7c2428bc20c16c8fd744c1216032336e
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SHA1
eed631c49a30baf635422abbffe2ef95b06eaec0
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SHA256
2a8a855ea51edbb8079331fafdb95680727e210756efaa00f2dec1fa60bfe2bb
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SHA512
19f63de6c09e3124a685da026e916225ab0949d766df83b38f5eedc17186f34dd83688066b2adfa8158df7b015eeace3a00eb599cd25bde952ae8e653a03fd88
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SSDEEP
12288:0YceV2ak78+GXU3yXSaqqKnr8feg7UxcpRbr1JCnoCpHpYBFDq6XwoO:0mV2ak78Pk3MSzvnSB4xcRv1JwoCHYBp
Malware Config
Extracted
djvu
http://astdg.top/fhsgtsspen6/get.php
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extension
.nooa
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offline_id
PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1
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payload_url
http://securebiz.org/dl/build2.exe
http://astdg.top/files/1/build3.exe
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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. You can get and look video overview decrypt tool: https://we.tl/t-CnI3tI6Ktv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0322gDrgo
Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/3460-2-0x0000000004B50000-0x0000000004C6B000-memory.dmp family_djvu behavioral2/memory/2076-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2076-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2076-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2076-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2076-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-39-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/468-41-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation 7c2428bc20c16c8fd744c1216032336e.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1252 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f99fcc13-dba6-4604-90db-0f8a2f858df1\\7c2428bc20c16c8fd744c1216032336e.exe\" --AutoStart" 7c2428bc20c16c8fd744c1216032336e.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 12 api.2ip.ua 20 api.2ip.ua 11 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3460 set thread context of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 4056 set thread context of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2076 7c2428bc20c16c8fd744c1216032336e.exe 2076 7c2428bc20c16c8fd744c1216032336e.exe 468 7c2428bc20c16c8fd744c1216032336e.exe 468 7c2428bc20c16c8fd744c1216032336e.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 3460 wrote to memory of 2076 3460 7c2428bc20c16c8fd744c1216032336e.exe 88 PID 2076 wrote to memory of 1252 2076 7c2428bc20c16c8fd744c1216032336e.exe 91 PID 2076 wrote to memory of 1252 2076 7c2428bc20c16c8fd744c1216032336e.exe 91 PID 2076 wrote to memory of 1252 2076 7c2428bc20c16c8fd744c1216032336e.exe 91 PID 2076 wrote to memory of 4056 2076 7c2428bc20c16c8fd744c1216032336e.exe 93 PID 2076 wrote to memory of 4056 2076 7c2428bc20c16c8fd744c1216032336e.exe 93 PID 2076 wrote to memory of 4056 2076 7c2428bc20c16c8fd744c1216032336e.exe 93 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96 PID 4056 wrote to memory of 468 4056 7c2428bc20c16c8fd744c1216032336e.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe"C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3460 -
C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe"C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2076 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f99fcc13-dba6-4604-90db-0f8a2f858df1" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1252
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C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe"C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4056 -
C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe"C:\Users\Admin\AppData\Local\Temp\7c2428bc20c16c8fd744c1216032336e.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:468
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5b40baee421e93a6145908f67787a291a
SHA1311874de97781222e06810a295e2f78a67b84f81
SHA25625d9d82b04a8a02ccdf9e5980ff2749edcae335faf854d05e24a4a42b35bfa17
SHA51277ceb1d112977f51b89484cbf29c7e299b9e44ba8e8f3daba20cfc71782b2cb1de99c58aaeae4f9741cb13a7389743863927cec42036666e3acf980be2cfd935
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD551e29e936851a4add5c1f45994f2a828
SHA1518a4cd1094a24e2d7640eefeecfaf1ec5928a3e
SHA2567f66936444a6f60559d43943f30514e527c70ea7e92a2dbabef2b7d66a2c8eff
SHA5123350fadcc1c304d2ed1e066a7d2e65b37df4c8724b825f664e3ad12929a772692bf98559adab7d632ad03b8802a7b44922155816bf793a7fdd35b32250129b7f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5980f47202d291ccf36f00ff5486ad571
SHA106e3e2d87f5c37742ed92e16283f8cda1b7f4bfc
SHA256c41b8cf7598c867977dbf980b77306f4b69d8ab2958213c2c9c1d84d1fcd2c08
SHA512390f3826d466e0f3f51e03bd7113877085250182f8bb9e7173213adecd2ef6c31a74e4b0b88769df88529cc8d302b72ff01f64bdd76f2888e02b06a9898650b1
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C:\Users\Admin\AppData\Local\f99fcc13-dba6-4604-90db-0f8a2f858df1\7c2428bc20c16c8fd744c1216032336e.exe
Filesize744KB
MD57c2428bc20c16c8fd744c1216032336e
SHA1eed631c49a30baf635422abbffe2ef95b06eaec0
SHA2562a8a855ea51edbb8079331fafdb95680727e210756efaa00f2dec1fa60bfe2bb
SHA51219f63de6c09e3124a685da026e916225ab0949d766df83b38f5eedc17186f34dd83688066b2adfa8158df7b015eeace3a00eb599cd25bde952ae8e653a03fd88