Analysis
- max time kernel
142s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
09/04/2024, 02:48
General
- Target f191d334abb3d33f9d99efb91b4c12f8f6367d8015c83b3f93adb272a2da5cf5.exe
- Size 575KB
- Sample240409-dayvescc38
- SHA256 f191d334abb3d33f9d99efb91b4c12f8f6367d8015c83b3f93adb272a2da5cf5
Malware Config
Extracted
-
asyncrat
-
0.5.8
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Testing
-
91.207.102.163:9899
-
HbLmK5pOLkik
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Detects executables packed with SmartAssembly 1 IoCs
- Detects file containing reversed ASEP Autorun registry keys 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 17 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\f191d334abb3d33f9d99efb91b4c12f8f6367d8015c83b3f93adb272a2da5cf5.exe"C:\Users\Admin\AppData\Local\Temp\f191d334abb3d33f9d99efb91b4c12f8f6367d8015c83b3f93adb272a2da5cf5.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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\f191d334abb3d33f9d99efb91b4c12f8f6367d8015c83b3f93adb272a2da5cf5.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\flVdJE.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\flVdJE" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC232.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\f191d334abb3d33f9d99efb91b4c12f8f6367d8015c83b3f93adb272a2da5cf5.exe"C:\Users\Admin\AppData\Local\Temp\f191d334abb3d33f9d99efb91b4c12f8f6367d8015c83b3f93adb272a2da5cf5.exe"2⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4060 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_vc0cmhpy.5kv.ps1
tmpC232.tmp
memory/748-5-0x00000000059C0000-0x00000000059CA000-memory.dmp
memory/748-2-0x0000000005F10000-0x00000000064B4000-memory.dmp
memory/748-6-0x0000000007340000-0x000000000735C000-memory.dmp
memory/748-7-0x0000000007360000-0x0000000007368000-memory.dmp
memory/748-8-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/748-9-0x0000000007370000-0x000000000737C000-memory.dmp
memory/748-10-0x0000000005400000-0x0000000005454000-memory.dmp
memory/748-11-0x0000000010180000-0x000000001021C000-memory.dmp
memory/748-12-0x0000000005B60000-0x0000000005B70000-memory.dmp
memory/748-1-0x0000000000F20000-0x0000000000FB6000-memory.dmp
memory/748-0-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/748-3-0x0000000005A00000-0x0000000005A92000-memory.dmp
memory/748-42-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/748-4-0x0000000005B60000-0x0000000005B70000-memory.dmp
memory/1560-36-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/1560-98-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/1560-27-0x0000000000400000-0x0000000000412000-memory.dmp
memory/2336-96-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/2336-90-0x0000000007B10000-0x0000000007B18000-memory.dmp
memory/2336-25-0x0000000002BB0000-0x0000000002BC0000-memory.dmp
memory/2336-87-0x0000000007A20000-0x0000000007A2E000-memory.dmp
memory/2336-83-0x0000000007860000-0x000000000786A000-memory.dmp
memory/2336-24-0x0000000002BB0000-0x0000000002BC0000-memory.dmp
memory/2336-70-0x0000000075770000-0x00000000757BC000-memory.dmp
memory/2336-22-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/2336-55-0x0000000002BB0000-0x0000000002BC0000-memory.dmp
memory/2336-69-0x000000007FA10000-0x000000007FA20000-memory.dmp
memory/2336-53-0x0000000006830000-0x000000000687C000-memory.dmp
memory/4952-18-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/4952-54-0x0000000005200000-0x0000000005210000-memory.dmp
memory/4952-56-0x000000007F850000-0x000000007F860000-memory.dmp
memory/4952-57-0x00000000074C0000-0x00000000074F2000-memory.dmp
memory/4952-58-0x0000000075770000-0x00000000757BC000-memory.dmp
memory/4952-52-0x00000000064F0000-0x000000000650E000-memory.dmp
memory/4952-68-0x0000000006A70000-0x0000000006A8E000-memory.dmp
memory/4952-37-0x0000000005F00000-0x0000000006254000-memory.dmp
memory/4952-80-0x0000000007700000-0x00000000077A3000-memory.dmp
memory/4952-81-0x0000000007E60000-0x00000000084DA000-memory.dmp
memory/4952-82-0x0000000007810000-0x000000000782A000-memory.dmp
memory/4952-29-0x0000000005E70000-0x0000000005ED6000-memory.dmp
memory/4952-84-0x0000000007A90000-0x0000000007B26000-memory.dmp
memory/4952-85-0x0000000007A10000-0x0000000007A21000-memory.dmp
memory/4952-28-0x00000000057B0000-0x0000000005816000-memory.dmp
memory/4952-86-0x0000000007A40000-0x0000000007A4E000-memory.dmp
memory/4952-88-0x0000000007A50000-0x0000000007A64000-memory.dmp
memory/4952-89-0x0000000007B50000-0x0000000007B6A000-memory.dmp
memory/4952-26-0x0000000005650000-0x0000000005672000-memory.dmp
memory/4952-20-0x0000000005200000-0x0000000005210000-memory.dmp
memory/4952-97-0x0000000074EE0000-0x0000000075690000-memory.dmp
memory/4952-21-0x0000000005840000-0x0000000005E68000-memory.dmp
memory/4952-19-0x0000000005200000-0x0000000005210000-memory.dmp
memory/4952-17-0x0000000002BC0000-0x0000000002BF6000-memory.dmp