667f88e8dcd4a15529ed02bb20da6ae2e5b195717eb630b20b9732c8573c4e83

Resubmissions

29/04/2021, 12:55

210429-emzncd6tb210

29/04/2021, 10:36

210429-wz9qmbhkzx8

11/09/2020, 19:36

200911-2a3b77fnj68

Analysis

max time kernel
134s
max time network
138s
platform
windows10_x64
resource
win10v20210410
submitted
29/04/2021, 12:55

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General

Target
6dbdd1efcab25eaaec2217e9bcbf0718.doc
Size 234KB
Sample210429-emzncd6tb2
SHA256 667f88e8dcd4a15529ed02bb20da6ae2e5b195717eb630b20b9732c8573c4e83
MD5 6dbdd1efcab25eaaec2217e9bcbf0718
SHA1 8d4782e50282a81c38aed151882647c0ebb3269d
SHA512 478611a8b742f5c7c4f60633ed08854d3fd7e5fd179fb9f6701165341a81cee1b5ff50336052ceab4690c69ce1d0c3d7b1ab4e8fceba9cab51c84c8d5df8915f
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3736	1720	Certutil.exe	80
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2108	1720	Rundll32.exe	80

Blocklisted process makes network request 1 IoCs

flow	pid	Process
47	2760	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	rundll32.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3656	WINWORD.EXE
3656	WINWORD.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE
3656	WINWORD.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2760	2108	Rundll32.exe	86
PID 2108 wrote to memory of 2760	2108	Rundll32.exe	86
PID 2108 wrote to memory of 2760	2108	Rundll32.exe	86

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\6dbdd1efcab25eaaec2217e9bcbf0718.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3656

C:\Windows\system32\Certutil.exe
Certutil -decode C:\Users\Public\Ksh1.xls C:\Users\Public\Ksh1.pdf
1⤵
- Process spawned unexpected child process
PID:3736

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\8ce17b3222cc4e489c19602d92da3168 /t 1844 /p 3656
1⤵
PID:3348

C:\Windows\system32\Rundll32.exe
Rundll32 C:\Users\Public\Ksh1.pdf,In
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\SysWOW64\rundll32.exe
  Rundll32 C:\Users\Public\Ksh1.pdf,In
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  PID:2760

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3656-114-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

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memory/3656-115-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

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memory/3656-116-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

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memory/3656-117-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

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memory/3656-119-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

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memory/3656-118-0x00007FF87BE00000-0x00007FF87E923000-memory.dmp

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memory/3656-122-0x00007FF876250000-0x00007FF87733E000-memory.dmp

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memory/3656-123-0x00007FF8736A0000-0x00007FF875595000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads