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Analysis
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max time kernel
140s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
24/01/2024, 02:14
Static task
static1
Behavioral task
behavioral1
Sample
712c87bdaf07988abfb4f1b9d6d1fc42.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
712c87bdaf07988abfb4f1b9d6d1fc42.exe
Resource
win10v2004-20231215-en
General
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Target
712c87bdaf07988abfb4f1b9d6d1fc42.exe
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Size
456KB
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MD5
712c87bdaf07988abfb4f1b9d6d1fc42
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SHA1
43caeec2f26c402aa902049840e837b2723b5756
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SHA256
bd32db099fbf1dac36ba14591b5a09c6e9b7e409244fb325e8aea555ecc65315
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SHA512
afda97d98e10eebf8299fbf103fdb9f73ad3fc5305f78508b111ed8db3eeb46f515f4cd1a622a708bbf6b555e03568a3e4380f62b3c89e30e293d938978bb66c
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SSDEEP
12288:b0VZyRhrASYm35BfstvO93a4pqzzjevg:b0V03Ahm35Bn3a42jq
Malware Config
Signatures
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resource yara_rule behavioral1/memory/1256-1-0x0000000000400000-0x00000000004CB000-memory.dmp upx behavioral1/memory/1256-2-0x0000000000400000-0x00000000004CB000-memory.dmp upx behavioral1/memory/1256-10-0x0000000000400000-0x00000000004CB000-memory.dmp upx behavioral1/memory/1256-15-0x0000000000400000-0x00000000004CB000-memory.dmp upx behavioral1/memory/1256-16-0x0000000000400000-0x00000000004CB000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\ISE = "C:\\Users\\Admin\\AppData\\Local\\Temp\\712c87bdaf07988abfb4f1b9d6d1fc42.exe /cs:1 " 712c87bdaf07988abfb4f1b9d6d1fc42.exe Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\ISE = "\"C:\\ProgramData\\b0605e\\ISb06_247.exe\" /s" 712c87bdaf07988abfb4f1b9d6d1fc42.exe -
Checks for any installed AV software in registry 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Eset\Nod\ 712c87bdaf07988abfb4f1b9d6d1fc42.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Enumerates system info in registry 2 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier 712c87bdaf07988abfb4f1b9d6d1fc42.exe -
Kills process with taskkill 1 IoCs
pid Process 1692 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1692 taskkill.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1256 wrote to memory of 1692 1256 712c87bdaf07988abfb4f1b9d6d1fc42.exe 28 PID 1256 wrote to memory of 1692 1256 712c87bdaf07988abfb4f1b9d6d1fc42.exe 28 PID 1256 wrote to memory of 1692 1256 712c87bdaf07988abfb4f1b9d6d1fc42.exe 28 PID 1256 wrote to memory of 1692 1256 712c87bdaf07988abfb4f1b9d6d1fc42.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\712c87bdaf07988abfb4f1b9d6d1fc42.exe"C:\Users\Admin\AppData\Local\Temp\712c87bdaf07988abfb4f1b9d6d1fc42.exe"1⤵
- Adds Run key to start application
- Checks for any installed AV software in registry
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:1256 -
C:\Windows\SysWOW64\taskkill.exetaskkill.exe /F /IM MSASCui* /IM avg* /IM ash* /IM McSA* /IM msse*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1692
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