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Analysis
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max time kernel
147s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
08/04/2024, 19:21
Behavioral task
behavioral1
Sample
20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe
Resource
win7-20240221-en
General
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Target
20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe
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Size
160KB
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MD5
1e6391be5e36af6623bed1899bf420b6
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SHA1
87dbfd001d7b059f29de7bb3b33793148725e925
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SHA256
20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f
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SHA512
63bdd925fd8af8d38912f652b5e40ab4c86e417361e33e8d7c370159f7a28b9f216cd7ba74100606f3c586345f287b2399b17c1821312dd8f7bab2b17ceed8c8
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SSDEEP
1536:kVdmQr3Z5IfQmv81aypP1s3yX+tlehTz5:008JOfQm01F9s3yX+fehTt
Malware Config
Signatures
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Detects Windows executables referencing non-Windows User-Agents 4 IoCs
resource yara_rule behavioral2/memory/2376-0-0x0000000000400000-0x0000000000428000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/files/0x000800000002321d-4.dat INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/2376-5-0x0000000000400000-0x0000000000428000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/4628-6-0x0000000000400000-0x0000000000428000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral2/memory/2376-0-0x0000000000400000-0x0000000000428000-memory.dmp UPX behavioral2/files/0x000800000002321d-4.dat UPX behavioral2/memory/2376-5-0x0000000000400000-0x0000000000428000-memory.dmp UPX behavioral2/memory/4628-6-0x0000000000400000-0x0000000000428000-memory.dmp UPX -
Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 2692 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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe -
Executes dropped EXE 1 IoCs
pid Process 4628 qcihost.exe -
resource yara_rule behavioral2/memory/2376-0-0x0000000000400000-0x0000000000428000-memory.dmp upx behavioral2/files/0x000800000002321d-4.dat upx behavioral2/memory/2376-5-0x0000000000400000-0x0000000000428000-memory.dmp upx behavioral2/memory/4628-6-0x0000000000400000-0x0000000000428000-memory.dmp upx -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\Debug\qcihost.exe 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe File opened for modification C:\Windows\Debug\qcihost.exe 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe File opened for modification C:\Windows\Debug\qcihost.exe attrib.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 qcihost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz qcihost.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 2376 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2376 wrote to memory of 2692 2376 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe 86 PID 2376 wrote to memory of 2692 2376 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe 86 PID 2376 wrote to memory of 2692 2376 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe 86 PID 2376 wrote to memory of 464 2376 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe 91 PID 2376 wrote to memory of 464 2376 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe 91 PID 2376 wrote to memory of 464 2376 20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe 91 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2692 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe"C:\Users\Admin\AppData\Local\Temp\20b5ecf5e5871f282ce3ae72870ceb77d5fed1af9383cc3fb52835d116aaec3f.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2376 -
C:\Windows\SysWOW64\attrib.exeattrib +a +s +h +r C:\Windows\Debug\qcihost.exe2⤵
- Sets file to hidden
- Drops file in Windows directory
- Views/modifies file attributes
PID:2692
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\20B5EC~1.EXE > nul2⤵PID:464
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C:\Windows\Debug\qcihost.exeC:\Windows\Debug\qcihost.exe1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:4628
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
160KB
MD5ece9968d30d1830df06382204f0efc07
SHA159d67b958a51050b675af3b349c98f5ff8abca0d
SHA256bdd5b0ac88e96dbb6e6661542042be88d26a76f94d18e982b0b9ff5526e814fe
SHA5122eb10eb80aea0a5eda9568bea691902623ff9b7af9ecf53d25aef7bb6f5217f497bacac83066ec694a9549fe21e5860927cb83e2440a3eb33a946f414206920b