Analysis
- max time kernel
150s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
11/05/2026, 12:13
Behavioral task
behavioral1
Sample
AA_v3-3.exe
Resource
win10v2004-20260130-en
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
AA_v3-3.exe
Resource
win11-20260130-en
9 signatures
150 seconds
General
- Target AA_v3-3.exe
- Size 798KB
- Sample260511-pdtwescw4k
- SHA256 ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a
- MD5 90aadf2247149996ae443e2c82af3730
- SHA1 050b7eba825412b24e3f02d76d7da5ae97e10502
- SHA512 eec32bb82b230dd309c29712e72d4469250e651449e127479d178eddbafd5a46ec8048a753bc2c1a0fdf1dc3ed72a9453ca66fb49cbf0f95a12704e5427182be
- SSDEEP 24576:Uj0JJ4p/A4npt3XojeQG5EtzRtO7GvmDguXd:UjoJ4u4zojegylDN
- TLSH T1EF059D133D81807FC2750571C98A1BB6FAF7EE940E798D436388BE3C5A76D01EE16629
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Family: FlawedAmmyy RAT
Remote-access trojan based on leaked code for the Ammyy remote admin software.
- 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-1-5-21-914486190-3969805341-592249730-1000\Control Panel\International\Geo\Nation AA_v3-3.exe - Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 AA_v3-3.exe File opened for modification \??\PhysicalDrive0 AA_v3-3.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 AA_v3-3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language AA_v3-3.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language AA_v3-3.exe - Modifies data under HKEY_USERS 5 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy AA_v3-3.exe Key created \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin AA_v3-3.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Ammyy\Admin\hr3 = 67efb49ba53fbbee766260e07e26046b085fdf3a74c834564612ff948c26e6a7fd129466720932ab825ecce6e06127c8760265014bea8f854946fd8b606f504800e86326f3b443b3ed19af AA_v3-3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Ammyy\Admin AA_v3-3.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE AA_v3-3.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeBackupPrivilege 4956 AA_v3-3.exe Token: SeRestorePrivilege 4956 AA_v3-3.exe Token: SeBackupPrivilege 4956 AA_v3-3.exe Token: SeRestorePrivilege 4956 AA_v3-3.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4956 AA_v3-3.exe - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 4956 AA_v3-3.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4600 wrote to memory of 4956 4600 AA_v3-3.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe"C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe"1⤵
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
PID:4780
-
C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe"C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe" -service -lunch1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600 -
C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe"C:\Users\Admin\AppData\Local\Temp\AA_v3-3.exe"2⤵
- Checks computer location settings
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4956
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\ProgramData\AMMYY\settings3.bin
- Size 334B
- SHA256 508077d83dbf8652075ea8227bda178d3397ac64fda345d1e32c43d755d5f228
- MD5 6776c50da83969af66081179eb9f2350
- SHA1 38f96cd5a543e4a3d3e4f1a47ecfac545b14bfac
- SHA512 6a2342b85e9eb0d5e2d9b14bbb04870784cac5ce25d5ff7fbca87e8f3624955a4dc48fa860591be8399fe4aece3027b9b9a7f773cfa14b8065380cab6767e2a0
- TLSH T1D6E0C02285458A192B0B10143DCD101457192DEEB4860E3E365261059105F1287B45C4
- MD5 SHA1 SHA512 TLSH