Analysis
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max time kernel
143s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 10:21
Static task
static1
Behavioral task
behavioral1
Sample
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
Resource
win11-20240426-en
General
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Target
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
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Size
808KB
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MD5
bb62a719079f90cf8a83271009403357
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SHA1
33db847b56d744a7306ee6d284e346bee7c7a1ba
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SHA256
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181
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SHA512
f09036502cb6ac7cb81df358ccfae65f2ca178760619e484f51a49c3bd262c87262c6de39563f49399687cb82b2918da35eeb7ea91829359e37f7c6502db1156
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SSDEEP
12288:YeXdQ+QZ+rBMQQ/csKFxlkRD7oDTPEt4w+b6gA9NP8liSIgdbC:YsPQsrSPWaRD8HcT++nWdb
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 17 IoCs
Processes:
resource yara_rule behavioral1/memory/1868-2-0x0000000003CF0000-0x0000000003E0B000-memory.dmp family_djvu behavioral1/memory/4724-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4724-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4724-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4724-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4724-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3008-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/924-39-0x0000000000400000-0x0000000002015000-memory.dmp family_djvu behavioral1/memory/3008-41-0x0000000000400000-0x0000000000537000-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.
Processes:
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\71cdf625-20ef-40c3-a996-23d6db4443e1\\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe\" --AutoStart" 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.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 14 api.2ip.ua 1 api.2ip.ua 2 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exedescription pid process target process PID 1868 set thread context of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 set thread context of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.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:
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exepid process 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 3008 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 3008 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exedescription pid process target process PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 1868 wrote to memory of 4724 1868 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 4724 wrote to memory of 696 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe icacls.exe PID 4724 wrote to memory of 696 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe icacls.exe PID 4724 wrote to memory of 696 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe icacls.exe PID 4724 wrote to memory of 924 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 4724 wrote to memory of 924 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 4724 wrote to memory of 924 4724 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe PID 924 wrote to memory of 3008 924 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe 2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1868 -
C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4724 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\71cdf625-20ef-40c3-a996-23d6db4443e1" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:696
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C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:924 -
C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3008
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4032,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4200 /prefetch:81⤵PID:512
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
MD5e35f58478c21729bfc929d6eda5b3d63
SHA127f5500f5c16ab42e0829d3afee874e51aa51727
SHA256fae73d7ff794ad69ea82003f0cafe04e0dc4ba4a9b8034276c552af2a808aaa3
SHA51220e91e0737e7d02910839f6f4334acd4a4661b7a7f651862394505ffeea3d91f40a0509afd6717c3a1a8c3df92e01796a72d1fb9c86257536152ca239a4b7abf
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD585b37b7e112b3624787de15847a733a7
SHA1a33b6c56d2d1264417a76420ec5d88e2ee0a236e
SHA256ed462408f40b5b7d8971b126bdc2e9088b5be4b10976077447570e5ec39474f2
SHA51218ea855fd7210237842c815bc7d69ded984d15c9d501b0aad53c71aa8ca9aa27a4a45d1231c285d7ca8ccdf60e5f931715be1b30fa8f07324976fd7653589a26
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C:\Users\Admin\AppData\Local\71cdf625-20ef-40c3-a996-23d6db4443e1\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
Filesize808KB
MD5bb62a719079f90cf8a83271009403357
SHA133db847b56d744a7306ee6d284e346bee7c7a1ba
SHA2562a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181
SHA512f09036502cb6ac7cb81df358ccfae65f2ca178760619e484f51a49c3bd262c87262c6de39563f49399687cb82b2918da35eeb7ea91829359e37f7c6502db1156