Analysis
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max time kernel
120s -
max time network
119s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
07-09-2024 18:16
Behavioral task
behavioral1
Sample
5b31c351ae35eff5d1db9feab78aa530N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
5b31c351ae35eff5d1db9feab78aa530N.exe
Resource
win10v2004-20240802-en
General
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Target
5b31c351ae35eff5d1db9feab78aa530N.exe
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Size
37KB
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MD5
5b31c351ae35eff5d1db9feab78aa530
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SHA1
c1056ae6320d74ff2f7c68e0163847ee61f64322
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SHA256
208981bbfc13638805c65b2b38f160866ef96f73089f10358172960742879f49
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SHA512
b906104290708dd4c22c718552492cd59efa7e6ef1d5e8692d7a013f05bed62dee360837f491b7ebac0c9e13716889afaf64a70989996a65e19330cbf16634ac
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SSDEEP
384:U/NqiUx54NLHdayszfhen9XsWiXFrAF+rMRTyN/0L+EcoinblneHQM3epzX0QNr8:ArZdJszfhex9i1rM+rMRa8NuyQmt
Malware Config
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 3356 netsh.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation 5b31c351ae35eff5d1db9feab78aa530N.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a381333f28d6355f51765e61000056f1.exe dllhost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a381333f28d6355f51765e61000056f1.exe dllhost.exe -
Executes dropped EXE 1 IoCs
pid Process 1876 dllhost.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a381333f28d6355f51765e61000056f1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .." dllhost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a381333f28d6355f51765e61000056f1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .." dllhost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
System Location Discovery: System Language Discovery 1 TTPs 3 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 5b31c351ae35eff5d1db9feab78aa530N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language dllhost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe 1876 dllhost.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1876 dllhost.exe -
Suspicious use of AdjustPrivilegeToken 27 IoCs
description pid Process Token: SeDebugPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe Token: 33 1876 dllhost.exe Token: SeIncBasePriorityPrivilege 1876 dllhost.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4436 wrote to memory of 1876 4436 5b31c351ae35eff5d1db9feab78aa530N.exe 91 PID 4436 wrote to memory of 1876 4436 5b31c351ae35eff5d1db9feab78aa530N.exe 91 PID 4436 wrote to memory of 1876 4436 5b31c351ae35eff5d1db9feab78aa530N.exe 91 PID 1876 wrote to memory of 3356 1876 dllhost.exe 95 PID 1876 wrote to memory of 3356 1876 dllhost.exe 95 PID 1876 wrote to memory of 3356 1876 dllhost.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\5b31c351ae35eff5d1db9feab78aa530N.exe"C:\Users\Admin\AppData\Local\Temp\5b31c351ae35eff5d1db9feab78aa530N.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4436 -
C:\Users\Admin\AppData\Local\Temp\dllhost.exe"C:\Users\Admin\AppData\Local\Temp\dllhost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1876 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dllhost.exe" "dllhost.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3356
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
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Downloads
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Filesize
37KB
MD55b31c351ae35eff5d1db9feab78aa530
SHA1c1056ae6320d74ff2f7c68e0163847ee61f64322
SHA256208981bbfc13638805c65b2b38f160866ef96f73089f10358172960742879f49
SHA512b906104290708dd4c22c718552492cd59efa7e6ef1d5e8692d7a013f05bed62dee360837f491b7ebac0c9e13716889afaf64a70989996a65e19330cbf16634ac