Analysis
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max time kernel
152s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
24-05-2024 20:23
Static task
static1
Behavioral task
behavioral1
Sample
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
Resource
win11-20240426-en
General
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Target
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
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Size
715KB
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MD5
045f054edf180dd0f0b3e0bc4ba2cde1
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SHA1
b63439fa1025ae39a561e29288572f59b529807b
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SHA256
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98
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SHA512
a7b0a6d242d36f84114e96e784cba75778b4b4c946de72f3ae79f30532cd931482623b042a7c07c49781c5c3c01a41644832f2c122569b5027e75414db97149a
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SSDEEP
12288:J6xf4IYTSNBzHVPHmy9iTqu0IFAfhLsI3aanLGi0G5dk/vfA4uxEiP9iRFRF4D2r:J6hYTSNBLVf8Tqu2LsIKaLGi0EdYfkRH
Malware Config
Extracted
djvu
http://cajgtus.com/test2/get.php
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extension
.vehu
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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
-
ransomnote
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Signatures
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Detected Djvu ransomware 16 IoCs
Processes:
resource yara_rule behavioral1/memory/3968-2-0x0000000004A00000-0x0000000004B1B000-memory.dmp family_djvu behavioral1/memory/4424-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4424-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4132-38-0x0000000000400000-0x0000000000537000-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:
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\50f7c260-3db1-441f-b13a-6d1750cf9ef7\\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe\" --AutoStart" 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.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 6 api.2ip.ua 21 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exedescription pid process target process PID 3968 set thread context of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 set thread context of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exepid process 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 4132 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 4132 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exedescription pid process target process PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 3968 wrote to memory of 4424 3968 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 4424 wrote to memory of 4216 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe icacls.exe PID 4424 wrote to memory of 4216 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe icacls.exe PID 4424 wrote to memory of 4216 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe icacls.exe PID 4424 wrote to memory of 2912 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 4424 wrote to memory of 2912 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 4424 wrote to memory of 2912 4424 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe PID 2912 wrote to memory of 4132 2912 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe 0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\50f7c260-3db1-441f-b13a-6d1750cf9ef7" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe"C:\Users\Admin\AppData\Local\Temp\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
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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 --mojo-platform-channel-handle=1036 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
1KB
MD53bfb237d95f9c34465d50360f39b3ceb
SHA12cdee845ea6ebbd3cd0466b0eae4752842de86cc
SHA2562ceaddb29268e6112e7aa95722894fb061238ad4e2b247ce23595609daa5eb8d
SHA512da55bf0fd898acda5dfd2366a96d439807e502c763dca35c3a119c3ab45f6e3d821a1e3fd29858e333606ef0e822f3373b9cb8c41d95736131bb001ad5b6a16f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
410B
MD585c91abadd6025205aed479111b51135
SHA16569bf2bccd027c8e18925f47ad42aefb86cc924
SHA2561483035bbf3586d4f7db60e82fca7419b5aefdaa8b08ff68540628b9c6831193
SHA512378678febab359eafdbea1567bbf4727dc9809e38a40b9ff63052f09df8224484749808255378aea83d53ed95bf97d46ce0fa7bc18c2747dd784ef5abb278f78
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD54a50dfb146aaa964f200fc8e97044dca
SHA17130c02c82733b328f007b7d3acb1ef6bf4c879b
SHA2563c9224832deb00fa517c72c685a095abfa002b51074a180f1ee970f980eac16a
SHA512b065695aac5e468ae15198b48283bb4f2163f50eaaf2283c71271202d9199335708cbbad6c8d9e5c5cb8a40348e29a97ff9c2806c6958da35f4c365079ac1649
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C:\Users\Admin\AppData\Local\50f7c260-3db1-441f-b13a-6d1750cf9ef7\0a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98.exeFilesize
715KB
MD5045f054edf180dd0f0b3e0bc4ba2cde1
SHA1b63439fa1025ae39a561e29288572f59b529807b
SHA2560a4517f2b2ffbf7c1dadffc3af69565c98baa1f9b0ad0946811ae8b95e124f98
SHA512a7b0a6d242d36f84114e96e784cba75778b4b4c946de72f3ae79f30532cd931482623b042a7c07c49781c5c3c01a41644832f2c122569b5027e75414db97149a
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memory/3968-2-0x0000000004A00000-0x0000000004B1B000-memory.dmpFilesize
1.1MB
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memory/3968-1-0x0000000004960000-0x00000000049FA000-memory.dmpFilesize
616KB
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memory/4132-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-33-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-22-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-38-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-35-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-20-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4132-29-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4424-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4424-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4424-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4424-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4424-17-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB