Analysis
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max time kernel
150s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-10-2024 18:15
Behavioral task
behavioral1
Sample
0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe
Resource
win10v2004-20241007-en
General
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Target
0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe
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Size
792KB
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MD5
69a8ed0b8edc940968f8535c20b4bbe4
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SHA1
3557d87e895d994b7099c428b20f9088475194b5
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SHA256
0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7
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SHA512
2e9f95743410ed2b98a022bd40f3a3bc126312a298cac7ef3dca5ce26126d4cc70c706798cabf11f1389da2605d584755872a0ad6f1ed6f210ed178b846c65da
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SSDEEP
24576:uGFJJ/K/F/kpt3X8je6GrHtzRtO7GvmDgezU:uGTJ/o/u8jefyl3A
Malware Config
Signatures
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FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
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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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe -
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe -
Modifies data under HKEY_USERS 5 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 31aec0c7c2431695679a80a93e80610ea94374f440f0d809d68fb9ed28690fd1a7aeef22e6cba9bb6e161c5b8ec7d0e17f471903a2a2fcec23e92bc07ed1b6a5b1557b31c1c3de0207de16e8 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4040 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 4040 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4000 wrote to memory of 4040 4000 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe 85 PID 4000 wrote to memory of 4040 4000 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe 85 PID 4000 wrote to memory of 4040 4000 0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe"C:\Users\Admin\AppData\Local\Temp\0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe"1⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
PID:1356
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C:\Users\Admin\AppData\Local\Temp\0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe"C:\Users\Admin\AppData\Local\Temp\0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe" -service -lunch1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4000 -
C:\Users\Admin\AppData\Local\Temp\0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe"C:\Users\Admin\AppData\Local\Temp\0498fcaffbcc80f86c8a6cb1ef655b9713bd96e2d08af2468570d087caa53ff7.exe"2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4040
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
502B
MD5318b8bc65c1a453d272322f633a2f880
SHA11ddb77858dad9cf71fcbf11df0cd8bf2881a081f
SHA25603e49445d109f04e6287bbca79190766dbe49400ea3d78cf3e6a5e9282100051
SHA512b5411b9943b8af03b226512606d9cbd051e48a5b10cc01dd60761b1b91fe1a3b9f8ee72e896b4f0f365109252ecf2f6bce4c2af60715634a0b1c231b7911cabd