Analysis
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max time kernel
144s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
05-07-2022 15:05
General
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Target
11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.exe
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Size
876KB
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MD5
7ffee898b3e5bcb568717fc44dc81e8a
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SHA1
40bc0a93b02b32daff22716c400aedcae4ba9c15
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SHA256
11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62
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SHA512
1327e940ae65514964f5973659ade4d8e906eda544e450dc8426c73d5a7c762bdf6f8523cd3440519a02d7a6e63f65dd7e128f0ba923560a3ed1ebb1a12d03bf
Malware Config
Extracted
asyncrat
0.5.7B
Default
polymoly.info:4199
AsyncMutex_6SI8OkPnk
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delay
3
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install
false
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install_file
siliconsoft.exe
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install_folder
%AppData%
Signatures
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AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
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Async RAT payload 1 IoCs
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Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
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Looks for VMWare Tools registry key 2 TTPs 1 IoCs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
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Suspicious use of SetThreadContext 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 15 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 20 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.exe"C:\Users\Admin\AppData\Local\Temp\11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- 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\11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.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\ZrsnggYrjQaKQd.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\ZrsnggYrjQaKQd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBFD5.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.exe"C:\Users\Admin\AppData\Local\Temp\11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.exe"C:\Users\Admin\AppData\Local\Temp\11123d69e824e0a71b1b6eb8204401bd9484630341b30875bb0f8a6cea3b3b62.exe"2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpBFD5.tmpFilesize
1KB
MD5d078e825c4d6e3c9a06cf560e63f7dfb
SHA1d9367b1dba12c2978e48ad82c3080d7f844d6e8d
SHA256c48c705ccbce56a2b82c74536ee8035b398c27aab945b5675c70000bd33988fa
SHA512e5660062eff9fc328ce00dc6cdbe444960f80b4c73f6b2e05867e1c2b74dd1fa081aaa65f0ef28aa55337782311f1bc75c5e8ee38a4f59838828bf09d506e742
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memory/1444-144-0x0000000000000000-mapping.dmp
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memory/3996-131-0x00000000055F0000-0x0000000005B94000-memory.dmpFilesize
5.6MB
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memory/3996-132-0x0000000005040000-0x00000000050D2000-memory.dmpFilesize
584KB
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memory/3996-133-0x0000000004FB0000-0x0000000004FBA000-memory.dmpFilesize
40KB
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memory/3996-134-0x0000000007970000-0x0000000007A0C000-memory.dmpFilesize
624KB
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memory/3996-136-0x00000000092E0000-0x0000000009346000-memory.dmpFilesize
408KB
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memory/3996-130-0x0000000000520000-0x0000000000602000-memory.dmpFilesize
904KB
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memory/4164-146-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
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memory/4164-145-0x0000000000000000-mapping.dmp
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memory/4476-137-0x00000000026F0000-0x0000000002726000-memory.dmpFilesize
216KB
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memory/4476-150-0x0000000075C30000-0x0000000075C7C000-memory.dmpFilesize
304KB
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memory/4476-142-0x0000000005120000-0x0000000005186000-memory.dmpFilesize
408KB
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memory/4476-140-0x0000000005080000-0x00000000050A2000-memory.dmpFilesize
136KB
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memory/4476-158-0x0000000007660000-0x0000000007668000-memory.dmpFilesize
32KB
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memory/4476-138-0x00000000051D0000-0x00000000057F8000-memory.dmpFilesize
6.2MB
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memory/4476-135-0x0000000000000000-mapping.dmp
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memory/4476-157-0x0000000007670000-0x000000000768A000-memory.dmpFilesize
104KB
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memory/4476-148-0x0000000006FE0000-0x0000000007012000-memory.dmpFilesize
200KB
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memory/4476-152-0x0000000007980000-0x0000000007FFA000-memory.dmpFilesize
6.5MB
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memory/4792-149-0x0000000075C30000-0x0000000075C7C000-memory.dmpFilesize
304KB
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memory/4792-151-0x0000000006920000-0x000000000693E000-memory.dmpFilesize
120KB
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memory/4792-153-0x00000000076D0000-0x00000000076EA000-memory.dmpFilesize
104KB
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memory/4792-154-0x0000000007750000-0x000000000775A000-memory.dmpFilesize
40KB
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memory/4792-155-0x0000000007950000-0x00000000079E6000-memory.dmpFilesize
600KB
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memory/4792-156-0x0000000007910000-0x000000000791E000-memory.dmpFilesize
56KB
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memory/4792-147-0x00000000063C0000-0x00000000063DE000-memory.dmpFilesize
120KB
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memory/4792-139-0x0000000000000000-mapping.dmp
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memory/5076-141-0x0000000000000000-mapping.dmp