Analysis
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max time kernel
101s -
max time network
105s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
16-08-2024 16:04
Static task
static1
Behavioral task
behavioral1
Sample
99f58ab2d04f94c150d8a256858f6420N.dll
Resource
win7-20240705-en
General
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Target
99f58ab2d04f94c150d8a256858f6420N.dll
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Size
4.0MB
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MD5
99f58ab2d04f94c150d8a256858f6420
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SHA1
c06092535c7d897e096e449d1f01cac654c3a5b1
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SHA256
37ab609349ba4c858c6e3487a24a431c450798e3d9dc7a13b22f08ae5fb6a58c
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SHA512
884df307414f40d5764dbaf4e817d203391c20f50f8156acf2c43cdb2cbeafc680134cf7686819b0405c8eab63370691cf8895dc7df1caaf34693884877f20e6
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SSDEEP
49152:2L4EbUvu5jL53soP+DaOVv8pHIARyHqinLMTPfuQ1TAvO/HGzQkQSdaI:2L4AfsLv5AkH7LMruQSyHlkQSX
Malware Config
Signatures
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Detects Floxif payload 1 IoCs
Processes:
resource yara_rule behavioral2/files/0x000900000002345b-1.dat floxif -
ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
Processes:
resource yara_rule behavioral2/files/0x000900000002345b-1.dat acprotect -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid Process 5012 rundll32.exe -
Processes:
resource yara_rule behavioral2/files/0x000900000002345b-1.dat upx behavioral2/memory/5012-4-0x0000000010000000-0x0000000010030000-memory.dmp upx behavioral2/memory/5012-8-0x0000000010000000-0x0000000010030000-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 3272 5012 WerFault.exe 83 -
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 5012 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid Process procid_target PID 3300 wrote to memory of 5012 3300 rundll32.exe 83 PID 3300 wrote to memory of 5012 3300 rundll32.exe 83 PID 3300 wrote to memory of 5012 3300 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\99f58ab2d04f94c150d8a256858f6420N.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3300 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\99f58ab2d04f94c150d8a256858f6420N.dll,#12⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5012 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5012 -s 7203⤵
- Program crash
PID:3272
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5012 -ip 50121⤵PID:1920
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab