Analysis
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max time kernel
141s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
22/01/2024, 13:52
Static task
static1
Behavioral task
behavioral1
Sample
6f98ee6b211b90003ed333a8a669be33.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
6f98ee6b211b90003ed333a8a669be33.exe
Resource
win10v2004-20231215-en
General
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Target
6f98ee6b211b90003ed333a8a669be33.exe
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Size
141KB
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MD5
6f98ee6b211b90003ed333a8a669be33
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SHA1
e8b9f4beb3cb792c5a07c38430d26fdafdb42473
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SHA256
656a3c926ba4c2cd44b4cc4189e69e398959392b5060d4f87bbd7b7e45f59bc8
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SHA512
846395e21c77822777f237463668573bc6fda3f15ab6eecfa6e832905ec5dc1cae1b2797a3b53e0497712ab213e52f318d58c6685d12f9428440bac04c18b8e8
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SSDEEP
1536:vUsHXJnoTPNB5xkBCYB5bbfle4UcXT9+jHshXh66sBDgaf8Dk/NOYi2detAuLSpw:vUiUB5Khbbde68yh9af8D6jze2uGp47
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
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MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
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Modifies firewall policy service 2 TTPs 4 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxvc32.exe = "C:\\Windows\\SysWOW64\\igfxvc32.exe:*:Enabled:Intel Virtual Server" igfxvc32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List igfxvc32.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\igfxvc32.exe = "C:\\Windows\\SysWOW64\\igfxvc32.exe:*:Enabled:Intel Virtual Server" igfxvc32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List igfxvc32.exe -
Deletes itself 1 IoCs
pid Process 2856 igfxvc32.exe -
Executes dropped EXE 2 IoCs
pid Process 2840 igfxvc32.exe 2856 igfxvc32.exe -
Loads dropped DLL 2 IoCs
pid Process 624 6f98ee6b211b90003ed333a8a669be33.exe 624 6f98ee6b211b90003ed333a8a669be33.exe -
resource yara_rule behavioral1/memory/624-2-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-4-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-6-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-8-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-10-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-11-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-9-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-33-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral1/memory/624-34-0x0000000000400000-0x0000000000427000-memory.dmp upx behavioral1/memory/2856-35-0x0000000000400000-0x000000000044C000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Intel Virtual Server = "C:\\Windows\\SysWOW64\\igfxvc32.exe" igfxvc32.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 6f98ee6b211b90003ed333a8a669be33.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 6f98ee6b211b90003ed333a8a669be33.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum igfxvc32.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 igfxvc32.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\ 6f98ee6b211b90003ed333a8a669be33.exe File opened for modification C:\Windows\SysWOW64\igfxvc32.exe 6f98ee6b211b90003ed333a8a669be33.exe File created C:\Windows\SysWOW64\igfxvc32.exe 6f98ee6b211b90003ed333a8a669be33.exe File opened for modification C:\Windows\SysWOW64\ igfxvc32.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2424 set thread context of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 2840 set thread context of 2856 2840 igfxvc32.exe 30 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 624 6f98ee6b211b90003ed333a8a669be33.exe 624 6f98ee6b211b90003ed333a8a669be33.exe 2856 igfxvc32.exe 2856 igfxvc32.exe -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 2424 6f98ee6b211b90003ed333a8a669be33.exe 2840 igfxvc32.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2424 wrote to memory of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 2424 wrote to memory of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 2424 wrote to memory of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 2424 wrote to memory of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 2424 wrote to memory of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 2424 wrote to memory of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 2424 wrote to memory of 624 2424 6f98ee6b211b90003ed333a8a669be33.exe 28 PID 624 wrote to memory of 2840 624 6f98ee6b211b90003ed333a8a669be33.exe 29 PID 624 wrote to memory of 2840 624 6f98ee6b211b90003ed333a8a669be33.exe 29 PID 624 wrote to memory of 2840 624 6f98ee6b211b90003ed333a8a669be33.exe 29 PID 624 wrote to memory of 2840 624 6f98ee6b211b90003ed333a8a669be33.exe 29 PID 2840 wrote to memory of 2856 2840 igfxvc32.exe 30 PID 2840 wrote to memory of 2856 2840 igfxvc32.exe 30 PID 2840 wrote to memory of 2856 2840 igfxvc32.exe 30 PID 2840 wrote to memory of 2856 2840 igfxvc32.exe 30 PID 2840 wrote to memory of 2856 2840 igfxvc32.exe 30 PID 2840 wrote to memory of 2856 2840 igfxvc32.exe 30 PID 2840 wrote to memory of 2856 2840 igfxvc32.exe 30 PID 2856 wrote to memory of 1380 2856 igfxvc32.exe 6 PID 2856 wrote to memory of 1380 2856 igfxvc32.exe 6
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1380
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C:\Users\Admin\AppData\Local\Temp\6f98ee6b211b90003ed333a8a669be33.exe"C:\Users\Admin\AppData\Local\Temp\6f98ee6b211b90003ed333a8a669be33.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2424 -
C:\Users\Admin\AppData\Local\Temp\6f98ee6b211b90003ed333a8a669be33.exe"C:\Users\Admin\AppData\Local\Temp\6f98ee6b211b90003ed333a8a669be33.exe"3⤵
- Loads dropped DLL
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:624 -
C:\Windows\SysWOW64\igfxvc32.exe"C:\Windows\SysWOW64\igfxvc32.exe" C:\Users\Admin\AppData\Local\Temp\6F98EE~1.EXE4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2840 -
C:\Windows\SysWOW64\igfxvc32.exe"C:\Windows\SysWOW64\igfxvc32.exe" C:\Users\Admin\AppData\Local\Temp\6F98EE~1.EXE5⤵
- Modifies firewall policy service
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2856
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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
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
141KB
MD56f98ee6b211b90003ed333a8a669be33
SHA1e8b9f4beb3cb792c5a07c38430d26fdafdb42473
SHA256656a3c926ba4c2cd44b4cc4189e69e398959392b5060d4f87bbd7b7e45f59bc8
SHA512846395e21c77822777f237463668573bc6fda3f15ab6eecfa6e832905ec5dc1cae1b2797a3b53e0497712ab213e52f318d58c6685d12f9428440bac04c18b8e8
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Filesize
128KB
MD5daf8ad2d8b1cf521c70eb346305f1017
SHA1c70f07a3a888cbeb1dd3b1e3cbddcf431e8daf1e
SHA256f64965304d283f8a5aef08e636d5fe7fda5c842439dc79989edc17194c8ba6e5
SHA51274e618a4e9314afbb3cbf58f6866ebdb5349663e90561f5cab2e07b4c33ecbda1ebb663d69bfeb40b1c1d096d216574e74a69c429458bd3ece3d1d4a90deac93