ee103f8d64cd8fa884ff6a041db2f7aa403c502f54e26337c606044c2f205394

General

Target
instruct_11.21.doc.vir.doc
Size 34KB
Sample211112-yqd56sebd4
SHA256 ee103f8d64cd8fa884ff6a041db2f7aa403c502f54e26337c606044c2f205394
MD5 a9490d94cf547e27dcc0d52dc72e74e7
SHA1 a00e440eb13f84c8b8faba5b81a7d85fce2a4074
SHA512 43dddc14679f16735c6f74c1b3d40b0be23bf995e9dd9a49ab9cd780cac6314a15ce73ab3943cf3346bbc77be2b2355ac6a8723c56d1ebe6872c9697f5048bc4
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	4196	4348	explorer.exe	68

Blocklisted process makes network request 1 IoCs

flow	pid	Process
29	1212	mshta.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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-1-5-21-1042495040-510797905-2613508344-1000_Classes\Local Settings	explorer.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4348	WINWORD.EXE
4348	WINWORD.EXE

Suspicious use of SetWindowsHookEx 23 IoCs

pid	Process
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE
4348	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4348 wrote to memory of 4196	4348	WINWORD.EXE	70
PID 4348 wrote to memory of 4196	4348	WINWORD.EXE	70
PID 5008 wrote to memory of 1212	5008	explorer.exe	72
PID 5008 wrote to memory of 1212	5008	explorer.exe	72
PID 5008 wrote to memory of 1212	5008	explorer.exe	72

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\instruct_11.21.doc.vir.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:4348
- \??\c:\windows\explorer.exe
  c:\windows\explorer c:\users\public\powPowNext.hta
  2⤵
  - Process spawned unexpected child process
  PID:4196

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\SysWOW64\mshta.exe
  "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Public\powPowNext.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
  2⤵
  - Blocklisted process makes network request
  PID:1212

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4348-118-0x00007FFABB130000-0x00007FFABB140000-memory.dmp

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memory/4348-119-0x00007FFABB130000-0x00007FFABB140000-memory.dmp

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memory/4348-120-0x00007FFABB130000-0x00007FFABB140000-memory.dmp

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memory/4348-121-0x00007FFABB130000-0x00007FFABB140000-memory.dmp

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memory/4348-123-0x0000020431A70000-0x0000020431A72000-memory.dmp

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memory/4348-122-0x0000020431A70000-0x0000020431A72000-memory.dmp

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memory/4348-124-0x00007FFABB130000-0x00007FFABB140000-memory.dmp

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memory/4348-125-0x0000020431A70000-0x0000020431A72000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads