Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 09:25
Static task
static1
Behavioral task
behavioral1
Sample
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
Resource
win10v2004-20240426-en
General
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Target
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
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Size
807KB
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MD5
5435b6a8f8dabe63910f1e9e4d436e5f
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SHA1
a9e66834552de4d90d205d8b7c349e0d64d6f65f
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SHA256
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d
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SHA512
748179129dd992654d01f8397f203840bf16fefbe125e09f455c8569b20ccf6c022022cf8188fa9c942c1d515b306300a19fe19388f1a24388b5858d596e7ca6
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SSDEEP
12288:Kupoo6qqaUYbgUaK5agd9dDOL21+Y8aUnEunsDTDENagBhWZDaVs3Uw:tp56qqauOaU9ECDUEhr8CEw
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral2/memory/1164-2-0x0000000003CD0000-0x0000000003DEB000-memory.dmp family_djvu behavioral2/memory/4372-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4372-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4372-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4372-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4372-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/4580-39-0x0000000000400000-0x0000000000537000-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.
Processes:
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b0e0d6db-cefd-4bb6-b170-aaf6b876faa7\\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe\" --AutoStart" d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.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 3 api.2ip.ua 4 api.2ip.ua 12 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exedescription pid process target process PID 1164 set thread context of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 set thread context of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exepid process 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe 4580 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe 4580 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exed30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exedescription pid process target process PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 1164 wrote to memory of 4372 1164 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 4372 wrote to memory of 5008 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe icacls.exe PID 4372 wrote to memory of 5008 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe icacls.exe PID 4372 wrote to memory of 5008 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe icacls.exe PID 4372 wrote to memory of 3148 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 4372 wrote to memory of 3148 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 4372 wrote to memory of 3148 4372 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe PID 3148 wrote to memory of 4580 3148 d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1164 -
C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4372 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b0e0d6db-cefd-4bb6-b170-aaf6b876faa7" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:5008 -
C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3148 -
C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe"C:\Users\Admin\AppData\Local\Temp\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4580
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5e4cacc9fa4adc8a6751aaf917c99e447
SHA1d27c0b41d3fe6627c82ea3e6e762b1474f64ba51
SHA2566ebb6b38a3cab01ca3d714f8df8b1d1dc0f159922fe9ae5e104dcd27c59eaf30
SHA512fc104a463bf08270217f88841c8690dcb264abeebf8bd78dfda2dd2bd4fa85231dc7aede74e427483065ef3e6ef3f2c7e73c1c67dc274861da3421ea35927a80
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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
MD5dbe6cf1f1d80b4202801f8a996aea990
SHA1784de4cc855dd50b01db9aec4e813b79a946ca05
SHA25631f60694cb13626118ee3ad485c8574af068779ed8dc7cdcc1885621587b1237
SHA512fba53562419283fc8eb81c7d3367c63643492a5618ab33b7da3f59172e75240bd21949647f072eda0179d9b14a5750cb1dadd820f485983176ae506a992d56e9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD52ba35eab5fad1af5ec23f0ccde732c31
SHA1fa9288688414952ef75f2d5edbc573ba75b4d0dc
SHA256c68cf1e99f5e6543e5930e8cdc381b86a8a79490707740f94a07232935aac3dd
SHA5121047e6b4b4c10ac006b14f21c93db21c58a641fcbb3801770be75399ad0bf444afe9c274948e445591c12f8062f22fbc757bd6b2d734cd7282fa064701f25d01
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C:\Users\Admin\AppData\Local\b0e0d6db-cefd-4bb6-b170-aaf6b876faa7\d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d.exe
Filesize807KB
MD55435b6a8f8dabe63910f1e9e4d436e5f
SHA1a9e66834552de4d90d205d8b7c349e0d64d6f65f
SHA256d30587fdb3fc7a66dbc5d9f3c33124fe9dd3381bf6b6b3a2a09179902da8168d
SHA512748179129dd992654d01f8397f203840bf16fefbe125e09f455c8569b20ccf6c022022cf8188fa9c942c1d515b306300a19fe19388f1a24388b5858d596e7ca6