133eaec108dcdf485a65616e0b26d8ffe1781e795b49bef6021c51679bf92c7a

General

Target
legal agreement-06.28.2021.doc
Size 50KB
Sample210629-pblb27tkc2
SHA256 133eaec108dcdf485a65616e0b26d8ffe1781e795b49bef6021c51679bf92c7a
MD5 ffad9afed8f30d780cac0808da1c5d3f
SHA1 b838575fe38390f411e85505607023b6764101a1
SHA512 91823ef5ca872eb7dd93b5419de870aaa4e44086b5f0adbb277d2c08d40536146a71378cce8600af82880d5771d6311ce0b9e227795270ac1f83a1c5352b30e0
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	3544	784	cmd.exe	21

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3656	2304	WerFault.exe	77

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	cmd.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
784	WINWORD.EXE
784	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe
3656	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	3656	WerFault.exe
Token: SeBackupPrivilege	3656	WerFault.exe
Token: SeDebugPrivilege	3656	WerFault.exe

Suspicious use of SetWindowsHookEx 25 IoCs

pid	Process
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE
784	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 3544	784	WINWORD.EXE	76
PID 784 wrote to memory of 3544	784	WINWORD.EXE	76
PID 3544 wrote to memory of 2304	3544	cmd.exe	77
PID 3544 wrote to memory of 2304	3544	cmd.exe	77
PID 3544 wrote to memory of 2304	3544	cmd.exe	77

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\legal agreement-06.28.2021.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:784
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c c:\\users\\public\\doubleBorderInt.hta
  2⤵
  - Process spawned unexpected child process
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3544
- - C:\Windows\SysWOW64\mshta.exe
    "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\doubleBorderInt.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    3⤵
    PID:2304
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2304 -s 1360
      4⤵
      Program crash
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3656

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/784-114-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

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memory/784-115-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

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memory/784-116-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

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memory/784-117-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

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memory/784-119-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

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memory/784-118-0x00007FFDF8960000-0x00007FFDFB483000-memory.dmp

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memory/784-122-0x00007FFDF3060000-0x00007FFDF414E000-memory.dmp

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memory/784-123-0x00007FFDF1160000-0x00007FFDF3055000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads