Analysis
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max time kernel
138s -
max time network
100s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
18-05-2024 19:26
Static task
static1
Behavioral task
behavioral1
Sample
1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe
Resource
win10v2004-20240508-en
General
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Target
1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe
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Size
225KB
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MD5
49c6b8a547939ab25c44f6c2e41ebaed
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SHA1
9b71bf85b5b40a5065accd5017b034d00dfcf1a2
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SHA256
1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed
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SHA512
cf8d0d4c290a7a15da3c6e36d8e786c17a8966e46f546ef4cf8fd2d378003f1e0a0234388b9b3a6b1c540d3e5886a2155e57b9960c4f3ad48beae65f05edd281
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SSDEEP
6144:cA2P27yTAnKGw0hjFhSR/W11yAJ9v0pMtRCpYM:cATuTAnKGwUAW3ycQqgf
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 3728 684 WerFault.exe winver.exe 5064 3708 WerFault.exe 1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe -
Modifies data under HKEY_USERS 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" svchost.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
Explorer.EXEdescription pid process Token: SeShutdownPrivilege 3436 Explorer.EXE Token: SeCreatePagefilePrivilege 3436 Explorer.EXE Token: SeShutdownPrivilege 3436 Explorer.EXE Token: SeCreatePagefilePrivilege 3436 Explorer.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
winver.exe1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exepid process 684 winver.exe 3708 1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe -
Suspicious use of UnmapMainImage 1 IoCs
Processes:
Explorer.EXEpid process 3436 Explorer.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exewinver.exedescription pid process target process PID 3708 wrote to memory of 684 3708 1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe winver.exe PID 3708 wrote to memory of 684 3708 1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe winver.exe PID 3708 wrote to memory of 684 3708 1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe winver.exe PID 3708 wrote to memory of 684 3708 1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe winver.exe PID 684 wrote to memory of 3436 684 winver.exe Explorer.EXE PID 3708 wrote to memory of 3436 3708 1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe Explorer.EXE
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
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C:\Users\Admin\AppData\Local\Temp\1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe"C:\Users\Admin\AppData\Local\Temp\1efb50439e1f8cf65915273d7b4097495532c8c9bf3307b14658ce7f4397d5ed.exe"2⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\winver.exewinver3⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 684 -s 3004⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 7443⤵
- Program crash
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman1⤵
- Modifies data under HKEY_USERS
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 684 -ip 6841⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3708 -ip 37081⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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memory/3436-4-0x0000000000950000-0x0000000000956000-memory.dmpFilesize
24KB
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memory/3436-5-0x0000000000950000-0x0000000000956000-memory.dmpFilesize
24KB
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memory/3436-10-0x0000000000960000-0x0000000000966000-memory.dmpFilesize
24KB
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memory/3708-1-0x0000000004550000-0x0000000004BA8000-memory.dmpFilesize
6.3MB
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memory/3708-2-0x0000000000510000-0x0000000000511000-memory.dmpFilesize
4KB
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memory/3708-6-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/3708-13-0x0000000004550000-0x0000000004BA8000-memory.dmpFilesize
6.3MB