Analysis
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max time kernel
143s -
max time network
123s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
21-05-2024 12:57
Static task
static1
Behavioral task
behavioral1
Sample
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Resource
win11-20240426-en
General
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Target
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
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Size
709KB
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MD5
93c4185d6bd7d35620815e99aa6d9f2b
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SHA1
01c3bfaffb1496d0b4b2d52e21db58dc76d2dd39
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SHA256
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697
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SHA512
8f21de65cc56a4c20a3211b6d598b748c1115d08cb44d2f086c6b5e5c26b3e572b956a361d05e8c2495a8e43097ba79b1f49c73e097f4f9d8a65664ef95722f0
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SSDEEP
12288:w/JSh8Uu2rB9DIuiqetcEFT39g+0qzyvbtvQRXUyfZwj:wBShZrTDIsmFD9FWvsvBs
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/332-3-0x0000000004280000-0x000000000439B000-memory.dmp family_djvu behavioral2/memory/2068-2-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2068-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2068-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2068-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2068-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1980-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3938118698-2964058152-2337880935-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\84feb6c7-2e90-4700-ae7e-ce79101a93ff\\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe\" --AutoStart" d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.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 2 api.2ip.ua 6 api.2ip.ua 1 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exedescription pid process target process PID 332 set thread context of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 set thread context of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.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:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exepid process 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe 1980 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe 1980 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exed90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exedescription pid process target process PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 332 wrote to memory of 2068 332 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2068 wrote to memory of 1344 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe icacls.exe PID 2068 wrote to memory of 1344 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe icacls.exe PID 2068 wrote to memory of 1344 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe icacls.exe PID 2068 wrote to memory of 2628 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2068 wrote to memory of 2628 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2068 wrote to memory of 2628 2068 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe PID 2628 wrote to memory of 1980 2628 d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:332 -
C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\84feb6c7-2e90-4700-ae7e-ce79101a93ff" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1344 -
C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2628 -
C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1980
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
MD5df80f9ba75076db634761b6132e0d4e3
SHA107983946fb660752c7cccb2ef82d01ec4c9ecc5d
SHA256d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99
SHA5124ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a
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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
MD543784c60af395e4e8d1cb7bf78363626
SHA169424fc9f079764fe5005651761755b323d40990
SHA256d8a839cc1840c3e37318da607cb3cac2a9f0a180bc3b8cbbda280819aaeabcf2
SHA51209910f5d1238429e9e0821d92fa424aca91b645d3f63fa1dde86f588337a9d8f509af122ca11def42975bb89d3e565afa7f9c0f47a1981f0f513b0a2ef71f1a6
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5c25bd174e1f12cc0f4e66a655ddc62fb
SHA1b530493dad2727c60b1b5407baa3120b71d57f3b
SHA25626e7a43a7aee8380c332b7953cf3f933e4b40a564e45ae3fbb473e2bf31eb5f5
SHA512b6c62261eed51281e31e4ba9d2d9186d939c19991931b2b1c2a93b4d655f55f36f2c2dbe6b98b09a8278a19a9f8b7374be42ef83050f90d45dacc4f8164673b5
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C:\Users\Admin\AppData\Local\84feb6c7-2e90-4700-ae7e-ce79101a93ff\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
Filesize709KB
MD593c4185d6bd7d35620815e99aa6d9f2b
SHA101c3bfaffb1496d0b4b2d52e21db58dc76d2dd39
SHA256d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697
SHA5128f21de65cc56a4c20a3211b6d598b748c1115d08cb44d2f086c6b5e5c26b3e572b956a361d05e8c2495a8e43097ba79b1f49c73e097f4f9d8a65664ef95722f0