Analysis
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max time kernel
110s -
max time network
54s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
16-08-2024 17:45
Static task
static1
Behavioral task
behavioral1
Sample
a6400ecba8aeca23fc2f8b4c1a2a4990N.dll
Resource
win7-20240708-en
General
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Target
a6400ecba8aeca23fc2f8b4c1a2a4990N.dll
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Size
395KB
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MD5
a6400ecba8aeca23fc2f8b4c1a2a4990
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SHA1
a0f646bafd81322847e46bad80138a277448c5fc
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SHA256
dddf0fd9aa48438205e2f414e14e5ae7bc6968418104724265ea317f52c0eeb5
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SHA512
c95e4bee78ae54499829be864d8effd8cb9a66398d34bd26c0cf5feb70f1fcbc1d4b399cd29c0cb3e8a87cd679febd23d349ac829b530342712a308353c3d5c8
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SSDEEP
6144:iu/M8/CrMemoS4iB7ncZzPnRGpk+WQvg1+i/X5NKP5NCs/lwaj2QUBV+UdvrEFpd:PJQAnc1x+Wj5NKPqs92QUBjvrEH75
Malware Config
Signatures
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Detects Floxif payload 1 IoCs
Processes:
resource yara_rule behavioral1/files/0x000d00000001227f-1.dat floxif -
Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
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ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
Processes:
resource yara_rule behavioral1/files/0x000d00000001227f-1.dat acprotect -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exeWerFault.exepid Process 1864 rundll32.exe 1880 WerFault.exe -
Processes:
resource yara_rule behavioral1/files/0x000d00000001227f-1.dat upx behavioral1/memory/1864-3-0x0000000000190000-0x00000000001C0000-memory.dmp upx behavioral1/memory/1864-8-0x0000000000190000-0x00000000001C0000-memory.dmp upx -
Drops file in Program Files directory 1 IoCs
Processes:
rundll32.exedescription ioc Process File created C:\Program Files\Common Files\System\symsrv.dll rundll32.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target Process procid_target 1880 1864 WerFault.exe 30 -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
rundll32.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
rundll32.exedescription pid Process Token: SeDebugPrivilege 1864 rundll32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid Process procid_target PID 1640 wrote to memory of 1864 1640 rundll32.exe 30 PID 1640 wrote to memory of 1864 1640 rundll32.exe 30 PID 1640 wrote to memory of 1864 1640 rundll32.exe 30 PID 1640 wrote to memory of 1864 1640 rundll32.exe 30 PID 1640 wrote to memory of 1864 1640 rundll32.exe 30 PID 1640 wrote to memory of 1864 1640 rundll32.exe 30 PID 1640 wrote to memory of 1864 1640 rundll32.exe 30 PID 1864 wrote to memory of 1880 1864 rundll32.exe 31 PID 1864 wrote to memory of 1880 1864 rundll32.exe 31 PID 1864 wrote to memory of 1880 1864 rundll32.exe 31 PID 1864 wrote to memory of 1880 1864 rundll32.exe 31
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a6400ecba8aeca23fc2f8b4c1a2a4990N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1640 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\a6400ecba8aeca23fc2f8b4c1a2a4990N.dll,#12⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1864 -s 3603⤵
- Loads dropped DLL
- Program crash
PID:1880
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab