Analysis
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max time kernel
144s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
01-06-2024 04:01
Behavioral task
behavioral1
Sample
daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe
Resource
win7-20240508-en
General
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Target
daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe
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Size
84KB
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MD5
b61574b6846ed7c7892b0f8a9a07bf79
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SHA1
71f5eca7dce975125047a5b1ce871225ace79048
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SHA256
daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae
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SHA512
5e5758bed93ef3f393c6af9ce006439773f3fc3ef1c05f6df9dc9bb475ae32d2d733d3b5d69d799286cdaca17d37572d097ddb8f36a46bf890d300e56fa64463
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SSDEEP
1536:yr3Z5IfQmv81a7pP1xF3yX2tM/jTEwwwEiiiixM1:WJOfQm01q9X3yX2q/jTJ1
Malware Config
Signatures
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Detects Windows executables referencing non-Windows User-Agents 4 IoCs
resource yara_rule behavioral2/memory/800-0-0x0000000000400000-0x0000000000416000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/files/0x000500000002328f-4.dat INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/800-5-0x0000000000400000-0x0000000000416000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/1364-6-0x0000000000400000-0x0000000000416000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral2/memory/800-0-0x0000000000400000-0x0000000000416000-memory.dmp UPX behavioral2/files/0x000500000002328f-4.dat UPX behavioral2/memory/800-5-0x0000000000400000-0x0000000000416000-memory.dmp UPX behavioral2/memory/1364-6-0x0000000000400000-0x0000000000416000-memory.dmp UPX -
Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 5088 attrib.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe -
Executes dropped EXE 1 IoCs
pid Process 1364 egkhost.exe -
resource yara_rule behavioral2/memory/800-0-0x0000000000400000-0x0000000000416000-memory.dmp upx behavioral2/files/0x000500000002328f-4.dat upx behavioral2/memory/800-5-0x0000000000400000-0x0000000000416000-memory.dmp upx behavioral2/memory/1364-6-0x0000000000400000-0x0000000000416000-memory.dmp upx -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\Debug\egkhost.exe attrib.exe File created C:\Windows\Debug\egkhost.exe daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe File opened for modification C:\Windows\Debug\egkhost.exe daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 800 daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 800 wrote to memory of 5088 800 daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe 83 PID 800 wrote to memory of 5088 800 daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe 83 PID 800 wrote to memory of 5088 800 daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe 83 PID 800 wrote to memory of 5068 800 daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe 89 PID 800 wrote to memory of 5068 800 daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe 89 PID 800 wrote to memory of 5068 800 daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe 89 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 5088 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe"C:\Users\Admin\AppData\Local\Temp\daca4dfea716ff4d698330910a45df0cb0697c7910f0197a3be30797014b5dae.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:800 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\egkhost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:5088
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\DACA4D~1.EXE > nul2⤵PID:5068
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C:\Windows\Debug\egkhost.exeC:\Windows\Debug\egkhost.exe1⤵
- Executes dropped EXE
PID:1364
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
84KB
MD57cfc923037eb277c91f139e3f2540c99
SHA16837710d5ae670183571ad9b75c71565e7811f3d
SHA256992b723ade16bab81e8fa91ea7355594526f4c64fa90db254d653e61e55f987b
SHA5121164e33db39c94fdf399d27aa8e8f34189e21af4129eb222eca2e72710d7a5324cc82052f7db6e76c77b9c9aa2e67b974edd29141a43c74a059909c15f36addc