Analysis
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max time kernel
143s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
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submitted
20-01-2023 19:36
General
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Target
taskshostw.exe
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Size
245KB
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MD5
e538f67d529d672c55304f3c9ad05392
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SHA1
f7ff40a1901d51dd6222b420bbece575b46b2cd2
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SHA256
124c17b099d8c09db4bd82b5ef3d41cea61727a480abfd56a943208d858ea8cf
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SHA512
22344125223dcc5d66a5d0a6b860e547b408123d75e3d8f698fa45b9ea33e7a736ccaa7ae4e32a0989a9d0637db16443502e7bd56beb8093bb6c09a0289361c6
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SSDEEP
3072:eTIu4ZQ8M2A1vA7m5+C6ZoEHBAnpK37nXz8o1008Q75wPsoB74tyJhvSK/KkMc/X:LHA1vweOR8CTwPnLKkM/u
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
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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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Drops startup file 1 IoCs
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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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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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
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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 use of AdjustPrivilegeToken 4 IoCs
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Suspicious use of WriteProcessMemory 2 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\taskshostw.exe"C:\Users\Admin\AppData\Local\Temp\taskshostw.exe"1⤵
- Checks computer location settings
- Drops startup file
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "taskshostw" /tr "C:\Users\Admin\AppData\Roaming\taskshostw.exe"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Roaming\taskshostw.exeC:\Users\Admin\AppData\Roaming\taskshostw.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\taskshostw.exeC:\Users\Admin\AppData\Roaming\taskshostw.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5c952c967a6c1013f7155cc3efed8cd03
SHA1dc5bbab6c51387ee4d9863415a196e297457d045
SHA256f825024aeb196af7aa49d77dccfae841aa55f9fef1c1f6f8f1e0c61032f8be12
SHA5128126ef222f9ed0f332f56b8754ed24845fc03fadcbe61bf6d82e07da81b143e120ce82be14e59dc98b460e399563e8461bf0925089a71008af58b3acd6d6afef
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Filesize
245KB
MD5e538f67d529d672c55304f3c9ad05392
SHA1f7ff40a1901d51dd6222b420bbece575b46b2cd2
SHA256124c17b099d8c09db4bd82b5ef3d41cea61727a480abfd56a943208d858ea8cf
SHA51222344125223dcc5d66a5d0a6b860e547b408123d75e3d8f698fa45b9ea33e7a736ccaa7ae4e32a0989a9d0637db16443502e7bd56beb8093bb6c09a0289361c6
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Filesize
245KB
MD5e538f67d529d672c55304f3c9ad05392
SHA1f7ff40a1901d51dd6222b420bbece575b46b2cd2
SHA256124c17b099d8c09db4bd82b5ef3d41cea61727a480abfd56a943208d858ea8cf
SHA51222344125223dcc5d66a5d0a6b860e547b408123d75e3d8f698fa45b9ea33e7a736ccaa7ae4e32a0989a9d0637db16443502e7bd56beb8093bb6c09a0289361c6
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Filesize
245KB
MD5e538f67d529d672c55304f3c9ad05392
SHA1f7ff40a1901d51dd6222b420bbece575b46b2cd2
SHA256124c17b099d8c09db4bd82b5ef3d41cea61727a480abfd56a943208d858ea8cf
SHA51222344125223dcc5d66a5d0a6b860e547b408123d75e3d8f698fa45b9ea33e7a736ccaa7ae4e32a0989a9d0637db16443502e7bd56beb8093bb6c09a0289361c6
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
272KB
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Filesize
10.8MB
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Filesize
10.8MB