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Analysis
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max time kernel
143s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
14/12/2024, 11:58
Behavioral task
behavioral1
Sample
9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe
Resource
win7-20241010-en
General
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Target
9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe
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Size
45KB
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MD5
b733e729705bf66c1e5c66d97e247701
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SHA1
25eec814abdf1fc6afe621e16aa89c4eb42616b9
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SHA256
9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023
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SHA512
09b59b8942c1409a03ca4e7f77c6007160af4d557386b766516dba392750869c017d0fd5d6fbbfcbb3e559a70ad42adcb498595df186be180cfc04e921d74320
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SSDEEP
768:Nu2/0TckJ26WUsFvgmo2q7MKjPGaG6PIyzjbFgX3iWlcF4S0ru1pYI0sBDZOx:Nu2/0TceH2ZKTkDy3bCXSWlc6SKuRjdM
Malware Config
Extracted
asyncrat
0.5.8
Default
66.66.146.74:9511
nwJFeGdDXcL2
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delay
3
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install
true
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install_file
System32.exe
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install_folder
%AppData%
Signatures
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Asyncrat family
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Async RAT payload 1 IoCs
resource yara_rule behavioral1/files/0x0030000000018b71-13.dat family_asyncrat -
Executes dropped EXE 1 IoCs
pid Process 2940 System32.exe -
Loads dropped DLL 1 IoCs
pid Process 3024 cmd.exe -
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 6 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 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language timeout.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language System32.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2596 timeout.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 2224 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe Token: SeDebugPrivilege 2940 System32.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2380 wrote to memory of 2892 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 30 PID 2380 wrote to memory of 2892 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 30 PID 2380 wrote to memory of 2892 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 30 PID 2380 wrote to memory of 2892 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 30 PID 2380 wrote to memory of 3024 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 32 PID 2380 wrote to memory of 3024 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 32 PID 2380 wrote to memory of 3024 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 32 PID 2380 wrote to memory of 3024 2380 9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe 32 PID 2892 wrote to memory of 2224 2892 cmd.exe 34 PID 2892 wrote to memory of 2224 2892 cmd.exe 34 PID 2892 wrote to memory of 2224 2892 cmd.exe 34 PID 2892 wrote to memory of 2224 2892 cmd.exe 34 PID 3024 wrote to memory of 2596 3024 cmd.exe 35 PID 3024 wrote to memory of 2596 3024 cmd.exe 35 PID 3024 wrote to memory of 2596 3024 cmd.exe 35 PID 3024 wrote to memory of 2596 3024 cmd.exe 35 PID 3024 wrote to memory of 2940 3024 cmd.exe 36 PID 3024 wrote to memory of 2940 3024 cmd.exe 36 PID 3024 wrote to memory of 2940 3024 cmd.exe 36 PID 3024 wrote to memory of 2940 3024 cmd.exe 36
Processes
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C:\Users\Admin\AppData\Local\Temp\9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe"C:\Users\Admin\AppData\Local\Temp\9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2380 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "System32" /tr '"C:\Users\Admin\AppData\Roaming\System32.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2892 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "System32" /tr '"C:\Users\Admin\AppData\Roaming\System32.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2224
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C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA016.tmp.bat""2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024 -
C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2596
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C:\Users\Admin\AppData\Roaming\System32.exe"C:\Users\Admin\AppData\Roaming\System32.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2940
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
152B
MD54a1e279be3597242b447550b4a5066fa
SHA13c2b7ef70cfb23e180eca6ea494b81871b3152c7
SHA2564ecf9ab536ed57bf373bd1b064dd25971ab9b80a495bee9a0677ffe6595da42d
SHA512ad08187018a81c25e416b7fa9eab19a81d7d8597404f77315451d2e4e2cce8a6884ea26196bb2a23483cc98f1f7dcbd3bc022ba49a138b7857992672e90d3366
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Filesize
45KB
MD5b733e729705bf66c1e5c66d97e247701
SHA125eec814abdf1fc6afe621e16aa89c4eb42616b9
SHA2569081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023
SHA51209b59b8942c1409a03ca4e7f77c6007160af4d557386b766516dba392750869c017d0fd5d6fbbfcbb3e559a70ad42adcb498595df186be180cfc04e921d74320