Analysis
- max time kernel
94s - max time network
138s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
14/07/2024, 06:26
General
- Target 2BB4A448B0132C70A9F3C03DB54A52F3.exe
- Size 453KB
- Sample240714-g663fsscke
- SHA256 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca
Malware Config
Extracted
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asyncrat
-
0.5.6D
-
Default
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seznam.zapto.org:6606
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seznam.zapto.org:7707
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seznam.zapto.org:8808
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spqniepxaluvdm
-
delay
5
-
install
true
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install_file
microssofte.exe
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install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 21 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\2BB4A448B0132C70A9F3C03DB54A52F3.exe"C:\Users\Admin\AppData\Local\Temp\2BB4A448B0132C70A9F3C03DB54A52F3.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 2BB4A448B0132C70A9F3C03DB54A52F3 /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /ru system /rl highest /tn 2BB4A448B0132C70A9F3C03DB54A52F3 /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB40E.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\microssofte.exe"C:\Users\Admin\AppData\Roaming\microssofte.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
tmpB40E.tmp.bat
microssofte.exe
memory/432-18-0x00000000050C0000-0x0000000005126000-memory.dmp
memory/432-16-0x0000000075220000-0x00000000759D0000-memory.dmp
memory/432-22-0x0000000000AF0000-0x0000000000B0E000-memory.dmp
memory/432-21-0x0000000000800000-0x0000000000828000-memory.dmp
memory/432-20-0x0000000006810000-0x0000000006886000-memory.dmp
memory/432-19-0x0000000075220000-0x00000000759D0000-memory.dmp
memory/432-17-0x0000000075220000-0x00000000759D0000-memory.dmp
memory/3708-1-0x0000000000800000-0x0000000000878000-memory.dmp
memory/3708-3-0x00000000052B0000-0x0000000005342000-memory.dmp
memory/3708-2-0x0000000005860000-0x0000000005E04000-memory.dmp
memory/3708-0-0x000000007522E000-0x000000007522F000-memory.dmp
memory/3708-11-0x0000000075220000-0x00000000759D0000-memory.dmp
memory/3708-6-0x0000000075220000-0x00000000759D0000-memory.dmp
memory/3708-5-0x0000000005350000-0x00000000053EC000-memory.dmp
memory/3708-4-0x00000000051E0000-0x00000000051F2000-memory.dmp