Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
22-05-2024 00:01
Static task
static1
Behavioral task
behavioral1
Sample
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
Resource
win11-20240508-en
General
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Target
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
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Size
806KB
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MD5
94ec3337ff55fbb90c9826771ee1a452
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SHA1
92a37f78607bb102849ee65f6efce5902302a958
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SHA256
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e
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SHA512
be5f8de7734fde10771cf8567a4b41483bd9033c9ece6a8f92d584b181d7f43e87db22864d33e3cb1c562189dcd230e82e411bb966de9220b5bb8da2e3a89be4
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SSDEEP
12288:YX00kQCEdfrJBMAZc5o35iKAO+N6yUemIC7JNJ5g0kYVSxcnG:el6AfXYy5iKAOsSICpSYVq
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
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ransomnote
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Signatures
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Detected Djvu ransomware 15 IoCs
Processes:
resource yara_rule behavioral1/memory/4468-2-0x0000000004020000-0x000000000413B000-memory.dmp family_djvu behavioral1/memory/2988-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2988-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2988-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2988-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2988-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3120-37-0x0000000000400000-0x0000000000537000-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:
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f77bb46d-2475-4dde-84c0-3379bfb615f5\\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe\" --AutoStart" 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.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 11 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exedescription pid process target process PID 4468 set thread context of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 set thread context of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.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:
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exepid process 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 3120 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 3120 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exedescription pid process target process PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4468 wrote to memory of 2988 4468 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 2988 wrote to memory of 1560 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe icacls.exe PID 2988 wrote to memory of 1560 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe icacls.exe PID 2988 wrote to memory of 1560 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe icacls.exe PID 2988 wrote to memory of 4004 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 2988 wrote to memory of 4004 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 2988 wrote to memory of 4004 2988 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe PID 4004 wrote to memory of 3120 4004 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe 434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4468 -
C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2988 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f77bb46d-2475-4dde-84c0-3379bfb615f5" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1560 -
C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4004 -
C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe"C:\Users\Admin\AppData\Local\Temp\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3120
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
MD5a1d955617a4d146e70544d0d9a0390ca
SHA15ffdc4453b23e24a7cb0e634b26864c169f5257b
SHA2568dbff2c0018158256912d87dd495a68c351303a319f50f204a930317e867aeb3
SHA5120bffbc27638b12cc04f335de8c4f3c74df01ae55b56f389f8d046d797b4c62d31bbff057ea75ce32f67cdd3b878fd0aad3eb62e983f814296e1b94de3c6ba810
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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
MD521b2bdc6ad7c6519fc05c22d669147bc
SHA176ee6162766175733a17631a10b0e0a688e81d6c
SHA256f87ace767d12e65ea8d2d86640300f78d6363a5a50e48b2124f4d40a305b2c07
SHA512b560520fbcf4a81b5d0fae0b2a57ae10adff1518fe6e6523aca939a3aa5a3d0143c43a26a62abf252454c99747ce99a32cdc32adb5ac56e042b98956025ef858
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5719ce63a8caf8f4939d83ef9a4fd292c
SHA13c301b344a4a0bf14d4d83acc7d02d1c849af241
SHA25662ad31e4c506a0ef8ae20c53ad03cba19ec7afd17bfbbe9c23bd8c7f4b9d34f4
SHA512b0b4ee9429082d3ad0d68b058624f9ebc753c522354a8293e1c7d09b1def514621cdca14f64c03d7b4434d6e59afe8c41571aa85636cda651ae37da0e2196baa
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C:\Users\Admin\AppData\Local\f77bb46d-2475-4dde-84c0-3379bfb615f5\434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e.exe
Filesize806KB
MD594ec3337ff55fbb90c9826771ee1a452
SHA192a37f78607bb102849ee65f6efce5902302a958
SHA256434d0afff9951493f14b3df3341106085d6b25585048f24260ea79bca876dd2e
SHA512be5f8de7734fde10771cf8567a4b41483bd9033c9ece6a8f92d584b181d7f43e87db22864d33e3cb1c562189dcd230e82e411bb966de9220b5bb8da2e3a89be4