Analysis
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max time kernel
136s -
max time network
119s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
27-01-2021 09:52
Static task
static1
Behavioral task
behavioral1
Sample
1111.xls
Resource
win7v20201028
General
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Target
1111.xls
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Size
153KB
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MD5
6bb69e29bcbe8950f250fbf92e779682
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SHA1
4dfb1de7f258afab63d166ebc275a552c5b8a0a6
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SHA256
ddf32aed6b7cda0de80bec9b11a506a32404c298c10a35bb6299a57d6b3ee823
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SHA512
52ff8915e8dfccd84fc709129a8057cc50a70ac72e2f95fe187c2b834455ad205770067430f99b9ece1b251665b014d00b0d65b19cb17e6767e93ce92860e8ab
Malware Config
Extracted
zloader
kev
26/01
https://gadgetswolf.com/post.php
https://homesoapmolds.com/post.php
https://govemedico.tk/post.php
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 928 4760 rundll32.exe EXCEL.EXE -
Blocklisted process makes network request 3 IoCs
Processes:
msiexec.exeflow pid process 33 2580 msiexec.exe 35 2580 msiexec.exe 37 2580 msiexec.exe -
Loads dropped DLL 1 IoCs
Processes:
rundll32.exepid process 884 rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
rundll32.exedescription pid process target process PID 884 set thread context of 2580 884 rundll32.exe msiexec.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4760 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
msiexec.exedescription pid process Token: SeSecurityPrivilege 2580 msiexec.exe Token: SeSecurityPrivilege 2580 msiexec.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 4760 EXCEL.EXE 4760 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 13 IoCs
Processes:
EXCEL.EXEpid process 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE 4760 EXCEL.EXE -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
EXCEL.EXErundll32.exerundll32.exedescription pid process target process PID 4760 wrote to memory of 928 4760 EXCEL.EXE rundll32.exe PID 4760 wrote to memory of 928 4760 EXCEL.EXE rundll32.exe PID 928 wrote to memory of 884 928 rundll32.exe rundll32.exe PID 928 wrote to memory of 884 928 rundll32.exe rundll32.exe PID 928 wrote to memory of 884 928 rundll32.exe rundll32.exe PID 884 wrote to memory of 2580 884 rundll32.exe msiexec.exe PID 884 wrote to memory of 2580 884 rundll32.exe msiexec.exe PID 884 wrote to memory of 2580 884 rundll32.exe msiexec.exe PID 884 wrote to memory of 2580 884 rundll32.exe msiexec.exe PID 884 wrote to memory of 2580 884 rundll32.exe msiexec.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\1111.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\ProgramData\formnet.dll,DllRegisterServer2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" C:\ProgramData\formnet.dll,DllRegisterServer3⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\msiexec.exemsiexec.exe4⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
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\ProgramData\formnet.dllMD5
b0f3fa047f6ae39a145fd364f693638e
SHA11951696d8aca4a31614bb68f9da392402785e14e
SHA2560bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890
SHA51286e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98
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memory/884-11-0x0000000000400000-0x0000000000426000-memory.dmpFilesize
152KB
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memory/884-9-0x0000000000000000-mapping.dmp
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memory/884-12-0x0000000003180000-0x0000000003181000-memory.dmpFilesize
4KB
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memory/928-7-0x0000000000000000-mapping.dmp
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memory/2580-13-0x0000000000000000-mapping.dmp
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memory/2580-14-0x0000000000D40000-0x0000000000D66000-memory.dmpFilesize
152KB
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memory/4760-5-0x00007FFAED800000-0x00007FFAEDE37000-memory.dmpFilesize
6.2MB
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memory/4760-6-0x00007FFACA170000-0x00007FFACA180000-memory.dmpFilesize
64KB
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memory/4760-4-0x00007FFACA170000-0x00007FFACA180000-memory.dmpFilesize
64KB
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memory/4760-3-0x00007FFACA170000-0x00007FFACA180000-memory.dmpFilesize
64KB
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memory/4760-2-0x00007FFACA170000-0x00007FFACA180000-memory.dmpFilesize
64KB