c3f8e624a68214a955c647a177e44048e7c829cbf928347aa042b4999e3e1b86

General

Target

files.05.05.2021.doc
Size

79KB
MD5

692f5b14f1c7fabe5be8a66ae0ad54d7
SHA1

c91da01dba26e5e8669f285a52b02fa98ebeeafa
SHA256

c3f8e624a68214a955c647a177e44048e7c829cbf928347aa042b4999e3e1b86
SHA512

985b8a22966ad599af72fd0d844182484b9ce257ac6a5ffed3d0adb3bc229edaacf94a1fcfdb9b1e0839957c7899e06def6d1c3e5ac0da231f8c6642bba54520

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.

Processes:

explorer.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	1916	3944	explorer.exe	WINWORD.EXE

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 1060 created 2872 1060 WerFault.exe mshta.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

2336 2872 WerFault.exe mshta.exe
1060 2872 WerFault.exe mshta.exe

description	pid	process	target process
PID 1060 created 2872	1060	WerFault.exe	mshta.exe

pid	pid_target	process	target process
2336	2872	WerFault.exe	mshta.exe
1060	2872	WerFault.exe	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

Processes:

WINWORD.EXE

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

Processes:

WINWORD.EXE

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

Processes:

explorer.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings explorer.exe
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3944 WINWORD.EXE
3944 WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings	explorer.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

WerFault.exe

pid	process
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe
2336	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2336 WerFault.exe
Token: SeBackupPrivilege 2336 WerFault.exe
Token: SeDebugPrivilege 2336 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	2336	WerFault.exe
Token: SeBackupPrivilege	2336	WerFault.exe
Token: SeDebugPrivilege	2336	WerFault.exe

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

WINWORD.EXE

pid	process
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE
3944	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

WINWORD.EXEexplorer.exe

description	pid	process	target process
PID 3944 wrote to memory of 1916	3944	WINWORD.EXE	explorer.exe
PID 3944 wrote to memory of 1916	3944	WINWORD.EXE	explorer.exe
PID 3960 wrote to memory of 2872	3960	explorer.exe	mshta.exe
PID 3960 wrote to memory of 2872	3960	explorer.exe	mshta.exe
PID 3960 wrote to memory of 2872	3960	explorer.exe	mshta.exe

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\files.05.05.2021.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:3944

C:\Windows\explorer.exe
explorer c:\users\public\selectSize.hta
2⤵
- Process spawned unexpected child process
PID:1916

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3960

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Public\selectSize.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
2⤵
PID:2872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 1336
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 1660
3⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Program crash
PID:1060

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

C:\Users\Public\selectSize.hta
MD5
67d1e7f0c5300ed911e3d03f6e128469

SHA1
640509bb591043c3c970a91f1dca06421aef7b05

SHA256
93203dec7f18cb41b98a43452b6704f0a3d091a69d0380c3e4fbd6ed679a3b3f

SHA512
2775b94b2c2861ead4397669c79898921757dba929c63f960d9f9cc7f8a723d3922e867ec2bb842599519071d9107082b89a8c1629bbb00cd1b2e0bfb7588129

Download Submit
memory/1916-180-0x0000000000000000-mapping.dmp

Download
memory/2872-182-0x0000000000000000-mapping.dmp

Download
memory/3944-114-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3944-115-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3944-116-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3944-117-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3944-119-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3944-118-0x00007FFE17710000-0x00007FFE1A233000-memory.dmp

Filesize
43.1MB

Download
memory/3944-122-0x00007FFE12660000-0x00007FFE1374E000-memory.dmp

Filesize
16.9MB

Download
memory/3944-123-0x00007FFE0EEB0000-0x00007FFE10DA5000-memory.dmp

Filesize
31.0MB

Download
memory/3944-179-0x0000020787AB0000-0x0000020787AB4000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads