Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
23-11-2024 22:01
Static task
static1
Behavioral task
behavioral1
Sample
a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
Resource
win7-20241010-en
General
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Target
a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
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Size
569KB
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MD5
baafb44a3a3f70dd1e009c04b9c88297
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SHA1
25b542946dd20f80773387a44352696f58f76cba
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SHA256
a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402
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SHA512
1ebd9f5d3515a973a4c45cfbbdc3fb227f457d2fbba03873eefc397cf0da72a29a12887466b3e2795a90b2a3b8c95024319324f075275421f39eac8b49ed0f11
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SSDEEP
12288:f20IpfjSt64LnnhlgVRZ7K/Tk7SP0q6qKLnHEbpt26XE85RSKoTx:fPemtrLnY7ETMi07ZCU
Malware Config
Extracted
asyncrat
0.5.7B
Default
194.5.97.229:1195
AsyncMutex_6SI8OkPnk
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delay
3
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install
false
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install_folder
%AppData%
Signatures
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Asyncrat family
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Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2748 powershell.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2872 set thread context of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 4 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 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2228 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 2748 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe Token: SeDebugPrivilege 2748 powershell.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 2872 wrote to memory of 2748 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 30 PID 2872 wrote to memory of 2748 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 30 PID 2872 wrote to memory of 2748 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 30 PID 2872 wrote to memory of 2748 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 30 PID 2872 wrote to memory of 2228 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 33 PID 2872 wrote to memory of 2228 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 33 PID 2872 wrote to memory of 2228 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 33 PID 2872 wrote to memory of 2228 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 33 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35 PID 2872 wrote to memory of 2472 2872 a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2748
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wHlcNFpFfEV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAD40.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2228
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C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"2⤵
- System Location Discovery: System Language Discovery
PID:2472
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1