Analysis
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max time kernel
149s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
25-02-2024 22:23
Static task
static1
Behavioral task
behavioral1
Sample
a4bdf08099f23da066d81eddb1c229d1.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
a4bdf08099f23da066d81eddb1c229d1.exe
Resource
win10v2004-20240221-en
General
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Target
a4bdf08099f23da066d81eddb1c229d1.exe
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Size
119KB
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MD5
a4bdf08099f23da066d81eddb1c229d1
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SHA1
bcd16532c813e5ba009d4d3cd246796d3ffb7a45
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SHA256
6a3faf643c2c33f48b0e59c9edb14baebbf9ce1678aed83727106b739f0cafcb
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SHA512
b5cca53eab5ff8db14cb53262de2dda2730f8149b51366a55bd4bef3c4501e594000edc4695ca61154e768609be0333898a9586f2840df6a23aaa54cd0abc69e
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SSDEEP
3072:hIZopSB/iLm7CEdYVgfIYCBP04+i6Hz3qFlhH0ytpAGf:VpSBt7CE+gfIhM4l6Hz3qFlJ0cei
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
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Detect Lumma Stealer payload V4 13 IoCs
Processes:
resource yara_rule behavioral2/memory/1636-9-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-24-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-31-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-35-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-58-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-68-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-81-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-92-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-125-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-135-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-145-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-155-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 behavioral2/memory/3008-168-0x0000000000400000-0x000000000064D000-memory.dmp family_lumma_v4 -
MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
wmsncs.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe \"C:\\Windows\\Fonts\\wmsncs.exe\"" wmsncs.exe -
Modifies firewall policy service 2 TTPs 8 IoCs
Processes:
wmsncs.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" wmsncs.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile wmsncs.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\EnableFirewall = "0" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\DoNotAllowExceptions = "0" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\DisableNotifications = "1" wmsncs.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile wmsncs.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" wmsncs.exe -
Modifies security service 2 TTPs 1 IoCs
Processes:
wmsncs.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4" wmsncs.exe -
Processes:
wmsncs.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" wmsncs.exe -
Looks for VMWare Tools registry key 2 TTPs 2 IoCs
Processes:
a4bdf08099f23da066d81eddb1c229d1.exewmsncs.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools a4bdf08099f23da066d81eddb1c229d1.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools wmsncs.exe -
Modifies Installed Components in the registry 2 TTPs 2 IoCs
Processes:
wmsncs.exedescription ioc process Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM} wmsncs.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM}\StubPath = "C:\\Windows\\Fonts\\wmsncs.exe" wmsncs.exe -
Modifies Windows Firewall 2 TTPs 5 IoCs
Processes:
netsh.exenetsh.exenetsh.exenetsh.exenetsh.exepid process 552 netsh.exe 1936 netsh.exe 3268 netsh.exe 224 netsh.exe 1368 netsh.exe -
Deletes itself 1 IoCs
Processes:
wmsncs.exepid process 3008 wmsncs.exe -
Executes dropped EXE 1 IoCs
Processes:
wmsncs.exepid process 3008 wmsncs.exe -
Processes:
wmsncs.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" wmsncs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" wmsncs.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
wmsncs.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Wmsncs Service = "C:\\Windows\\Fonts\\wmsncs.exe" wmsncs.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NvidMediaCenter = "C:\\Program Files (x86)\\Common Files\\System\\wmsncs.exe" wmsncs.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Spool Driver Service = "C:\\Windows\\system32\\spool\\drivers\\wmsncs.exe" wmsncs.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Wins Service = "C:\\Windows\\system32\\wins\\wmsncs.exe" wmsncs.exe -
Drops file in System32 directory 4 IoCs
Processes:
wmsncs.exedescription ioc process File opened for modification C:\Windows\SysWOW64\wins\wmsncs.exe wmsncs.exe File created C:\Windows\system32\spool\drivers\wmsncs.exe wmsncs.exe File opened for modification C:\Windows\system32\spool\drivers\wmsncs.exe wmsncs.exe File created C:\Windows\SysWOW64\wins\wmsncs.exe wmsncs.exe -
Drops file in Program Files directory 3 IoCs
Processes:
wmsncs.exedescription ioc process File opened for modification C:\Program Files (x86)\Common Files\System wmsncs.exe File created C:\Program Files (x86)\Common Files\System\wmsncs.exe wmsncs.exe File opened for modification C:\Program Files (x86)\Common Files\System\wmsncs.exe wmsncs.exe -
Drops file in Windows directory 2 IoCs
Processes:
a4bdf08099f23da066d81eddb1c229d1.exedescription ioc process File created C:\Windows\Fonts\wmsncs.exe a4bdf08099f23da066d81eddb1c229d1.exe File opened for modification C:\Windows\Fonts\wmsncs.exe a4bdf08099f23da066d81eddb1c229d1.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies data under HKEY_USERS 19 IoCs
Processes:
wmsncs.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup\Installed Components wmsncs.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\MaxConnectionsPer1_0Server = "65534" wmsncs.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\MaxConnectionsPerServer = "65534" wmsncs.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup wmsncs.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings wmsncs.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\NvidMediaCenter = "C:\\Program Files (x86)\\Common Files\\System\\wmsncs.exe" wmsncs.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\Wins Service = "C:\\Windows\\system32\\wins\\wmsncs.exe" wmsncs.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ wmsncs.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" wmsncs.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM}\StubPath = "C:\\Windows\\Fonts\\wmsncs.exe" wmsncs.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run wmsncs.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\Wmsncs Service = "C:\\Windows\\Fonts\\wmsncs.exe" wmsncs.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run\Spool Driver Service = "C:\\Windows\\system32\\spool\\drivers\\wmsncs.exe" wmsncs.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" wmsncs.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" wmsncs.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Active Setup\Installed Components\{103L3C30-C3B3-4130-9363-E59E1375PERM} wmsncs.exe Key created \REGISTRY\USER\.DEFAULT\Software wmsncs.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft wmsncs.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" wmsncs.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
a4bdf08099f23da066d81eddb1c229d1.exewmsncs.exedescription pid process Token: 33 1636 a4bdf08099f23da066d81eddb1c229d1.exe Token: SeIncBasePriorityPrivilege 1636 a4bdf08099f23da066d81eddb1c229d1.exe Token: 33 3008 wmsncs.exe Token: SeIncBasePriorityPrivilege 3008 wmsncs.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
wmsncs.exedescription pid process target process PID 3008 wrote to memory of 552 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 552 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 552 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 1936 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 1936 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 1936 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 3268 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 3268 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 3268 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 224 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 224 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 224 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 1368 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 1368 3008 wmsncs.exe netsh.exe PID 3008 wrote to memory of 1368 3008 wmsncs.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a4bdf08099f23da066d81eddb1c229d1.exe"C:\Users\Admin\AppData\Local\Temp\a4bdf08099f23da066d81eddb1c229d1.exe"1⤵
- Looks for VMWare Tools registry key
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1636
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C:\Windows\Fonts\wmsncs.exe"C:\Windows\Fonts\wmsncs.exe"1⤵
- Modifies WinLogon for persistence
- Modifies firewall policy service
- Modifies security service
- Windows security bypass
- Looks for VMWare Tools registry key
- Modifies Installed Components in the registry
- Deletes itself
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3008 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" firewall set portopening TCP 1013 BS2⤵
- Modifies Windows Firewall
PID:552 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" firewall set portopening TCP 8080 PORT12⤵
- Modifies Windows Firewall
PID:1936 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" firewall set portopening TCP 8081 PORT22⤵
- Modifies Windows Firewall
PID:3268 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" firewall add allowedprogram "C:\Windows\Fonts\wmsncs.exe" workstation ENABLE ALL2⤵
- Modifies Windows Firewall
PID:224 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" firewall set allowedprogram "C:\Windows\Fonts\wmsncs.exe" workstation ENABLE ALL2⤵
- Modifies Windows Firewall
PID:1368
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
3Windows Service
3Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
3Windows Service
3Defense Evasion
Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Modify Registry
7Virtualization/Sandbox Evasion
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
119KB
MD5a4bdf08099f23da066d81eddb1c229d1
SHA1bcd16532c813e5ba009d4d3cd246796d3ffb7a45
SHA2566a3faf643c2c33f48b0e59c9edb14baebbf9ce1678aed83727106b739f0cafcb
SHA512b5cca53eab5ff8db14cb53262de2dda2730f8149b51366a55bd4bef3c4501e594000edc4695ca61154e768609be0333898a9586f2840df6a23aaa54cd0abc69e