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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17/11/2024, 20:39
Behavioral task
behavioral1
Sample
Server.exe
Resource
win7-20240903-en
windows7-x64
17 signatures
150 seconds
Behavioral task
behavioral2
Sample
Server.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
17 signatures
150 seconds
General
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Target
Server.exe
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Size
93KB
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MD5
77569c49188ab04b3ed8fef0dfbef2cf
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SHA1
413db869e07385a42e1f9a1209822fa41ec8cf8a
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SHA256
dee23e85d531e80655457b017752bb99378ba91819e5a85ccf9343a1094a1a4c
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SHA512
ea2b7c6e94f0559f9d1ac48f797e4fe40849e531088cb4a145247d6ad9da9488f2ce1acf0f7384ecf7df8fb5165470919de75e12cd2bf554d47cde14853ffe2a
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SSDEEP
1536:RGbJD/HBZbszKu9AZpd7r1jEwzGi1dD3DEgS:RGqzK4AZ3HCi1dn9
Malware Config
Signatures
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Disables Task Manager via registry modification
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Modifies Windows Firewall 2 TTPs 6 IoCs
pid Process 4716 netsh.exe 1556 netsh.exe 4520 netsh.exe 1972 netsh.exe 4728 netsh.exe 776 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation Server.exe -
Deletes itself 1 IoCs
pid Process 2736 svchost.exe -
Drops startup file 6 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe Server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe Server.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe Server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe Server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe svchost.exe -
Executes dropped EXE 4 IoCs
pid Process 2736 svchost.exe 3756 StUpdate.exe 448 StUpdate.exe 4464 StUpdate.exe -
Drops autorun.inf file 1 TTPs 4 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File created F:\autorun.inf Server.exe File opened for modification F:\autorun.inf Server.exe File created C:\autorun.inf Server.exe File opened for modification C:\autorun.inf Server.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\Explower.exe Server.exe File opened for modification C:\Windows\SysWOW64\Explower.exe Server.exe File opened for modification C:\Windows\SysWOW64\Explower.exe svchost.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\Explower.exe Server.exe File opened for modification C:\Program Files (x86)\Explower.exe Server.exe File opened for modification C:\Program Files (x86)\Explower.exe svchost.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 18 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 value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \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 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 Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
System Location Discovery: System Language Discovery 1 TTPs 12 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 netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language StUpdate.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language StUpdate.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language StUpdate.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Server.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 540 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe 4780 Server.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2736 svchost.exe -
Suspicious use of AdjustPrivilegeToken 38 IoCs
description pid Process Token: SeDebugPrivilege 4780 Server.exe Token: SeDebugPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe Token: 33 2736 svchost.exe Token: SeIncBasePriorityPrivilege 2736 svchost.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 4780 wrote to memory of 776 4780 Server.exe 86 PID 4780 wrote to memory of 776 4780 Server.exe 86 PID 4780 wrote to memory of 776 4780 Server.exe 86 PID 4780 wrote to memory of 4716 4780 Server.exe 88 PID 4780 wrote to memory of 4716 4780 Server.exe 88 PID 4780 wrote to memory of 4716 4780 Server.exe 88 PID 4780 wrote to memory of 1556 4780 Server.exe 89 PID 4780 wrote to memory of 1556 4780 Server.exe 89 PID 4780 wrote to memory of 1556 4780 Server.exe 89 PID 4780 wrote to memory of 2736 4780 Server.exe 92 PID 4780 wrote to memory of 2736 4780 Server.exe 92 PID 4780 wrote to memory of 2736 4780 Server.exe 92 PID 2736 wrote to memory of 4520 2736 svchost.exe 95 PID 2736 wrote to memory of 4520 2736 svchost.exe 95 PID 2736 wrote to memory of 4520 2736 svchost.exe 95 PID 2736 wrote to memory of 1972 2736 svchost.exe 97 PID 2736 wrote to memory of 1972 2736 svchost.exe 97 PID 2736 wrote to memory of 1972 2736 svchost.exe 97 PID 2736 wrote to memory of 4728 2736 svchost.exe 98 PID 2736 wrote to memory of 4728 2736 svchost.exe 98 PID 2736 wrote to memory of 4728 2736 svchost.exe 98 PID 2736 wrote to memory of 540 2736 svchost.exe 99 PID 2736 wrote to memory of 540 2736 svchost.exe 99 PID 2736 wrote to memory of 540 2736 svchost.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\Server.exe"C:\Users\Admin\AppData\Local\Temp\Server.exe"1⤵
- Checks computer location settings
- Drops startup file
- Drops autorun.inf file
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4780 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:776
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C:\Windows\SysWOW64\netsh.exenetsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe"2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:4716
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:1556
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C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"2⤵
- Deletes itself
- Drops startup file
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2736 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe" "svchost.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:4520
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C:\Windows\SysWOW64\netsh.exenetsh firewall delete allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:1972
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe" "svchost.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:4728
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /sc minute /mo 1 /tn StUpdate /tr C:\Users\Admin\AppData\Local\Temp/StUpdate.exe3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:540
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C:\Users\Admin\AppData\Local\Temp\StUpdate.exeC:\Users\Admin\AppData\Local\Temp/StUpdate.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3756
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C:\Users\Admin\AppData\Local\Temp\StUpdate.exeC:\Users\Admin\AppData\Local\Temp/StUpdate.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:448
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C:\Users\Admin\AppData\Local\Temp\StUpdate.exeC:\Users\Admin\AppData\Local\Temp/StUpdate.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4464
Network
MITRE ATT&CK Enterprise v15
Persistence
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
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Filesize
408B
MD5661cab77d3b907e8057f2e689e995af3
SHA15d1a0ee9c5ee7a7a90d56d00c10dc0e679bee01c
SHA2568f27f95ad7c09f2e05d7960e78ef8cd935c1262e9657883a75d70dcb877592d2
SHA5122523b316bd79fed0e9b3d73f46959f3dfe270cf950f34bd9d49fe4113a2ae46d0cd00224d848bc40c0d8c55449e2dccc4b4278ba4809c0ca9ede1ac75673fc67
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Filesize
44B
MD55389b11510f65424863e2e9724bd65e4
SHA1071102005e3217b50283b71ee33858bb15606549
SHA256fecb0cdb9664c0c83a84dff897fecff3773df1d4d5a6fc5c84e2187027315fa7
SHA512ba78a6c2619bd7a4d4428a5b0b739e109dfa9ddb8925a005067f8b7091744bd9e16e007d32f62ae42768f3f45fb8aefe496f5a3ef617862127b53a88f86514ff
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Filesize
5B
MD569cf10399d0d1350c3698099796624cb
SHA1d0b58b76ff065f51172971853a7da414286d9ea7
SHA256a7bff94c7cdef50b67a3bab142ebcec4d360491e339581c41f433fec6d002f48
SHA5125e1c9745b2b529c026e51fbff7fd4e1e0bd208c705b7da830459758d28c01b32b9bc93caa7ad60228d3e785784023d8a739fda0dab62d3c76770ea84c257f1f7
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Filesize
93KB
MD577569c49188ab04b3ed8fef0dfbef2cf
SHA1413db869e07385a42e1f9a1209822fa41ec8cf8a
SHA256dee23e85d531e80655457b017752bb99378ba91819e5a85ccf9343a1094a1a4c
SHA512ea2b7c6e94f0559f9d1ac48f797e4fe40849e531088cb4a145247d6ad9da9488f2ce1acf0f7384ecf7df8fb5165470919de75e12cd2bf554d47cde14853ffe2a