266d88e6796be43f470e11e7da3fb0f63127dc747513d297c50d75148b353602

General

Target

docs,06.21.doc
Size

50KB
MD5

a75fa282ba05937f43c4425e548f1d5c
SHA1

565ca43482c76d02eb4f5e55deb2af53dfa3b8db
SHA256

266d88e6796be43f470e11e7da3fb0f63127dc747513d297c50d75148b353602
SHA512

6343c053c5cca9f6e4b9e4b157c19aba9c47cc1722e4b8a158009cce7c7a8cb88dc3cbb95581888c76fd708c1d8c212dca1a5dc9a393594957fb7f6602c119f5

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:

cmd.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	2440	772	cmd.exe	WINWORD.EXE

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3476 created 188 3476 WerFault.exe mshta.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3644 188 WerFault.exe mshta.exe
3476 188 WerFault.exe mshta.exe

description	pid	process	target process
PID 3476 created 188	3476	WerFault.exe	mshta.exe

pid	pid_target	process	target process
3644	188	WerFault.exe	mshta.exe
3476	188	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 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

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:

cmd.exe

description ioc process

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

Processes:

WINWORD.EXE

pid process

772 WINWORD.EXE
772 WINWORD.EXE

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

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

WerFault.exe

pid	process
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe
3644	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 3644 WerFault.exe
Token: SeBackupPrivilege 3644 WerFault.exe
Token: SeDebugPrivilege 3644 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	3644	WerFault.exe
Token: SeBackupPrivilege	3644	WerFault.exe
Token: SeDebugPrivilege	3644	WerFault.exe

Suspicious use of SetWindowsHookEx 25 IoCs

Processes:

WINWORD.EXE

pid	process
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE
772	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

WINWORD.EXEcmd.exe

description	pid	process	target process
PID 772 wrote to memory of 2440	772	WINWORD.EXE	cmd.exe
PID 772 wrote to memory of 2440	772	WINWORD.EXE	cmd.exe
PID 2440 wrote to memory of 188	2440	cmd.exe	mshta.exe
PID 2440 wrote to memory of 188	2440	cmd.exe	mshta.exe
PID 2440 wrote to memory of 188	2440	cmd.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\docs,06.21.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:772

C:\Windows\SYSTEM32\cmd.exe
cmd /c c:\\users\\public\\buttListboxSngl.hta
2⤵
- Process spawned unexpected child process
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2440

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\buttListboxSngl.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
3⤵
PID:188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 188 -s 1332
4⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 188 -s 1632
4⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Program crash
PID:3476

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\users\public\buttListboxSngl.hta
MD5
aa68b2d92b79feae09dcb76d34ac9fb7

SHA1
8ead6aa56c4426d4fe5f7d415d927379a116c03d

SHA256
7a8ba83948952fb9fdc6237adf609e8e3f1caf2dbce6ca6e6b5ae4aca0d04a20

SHA512
a09cf9694aee32013a3ee6718d30168f6ee2fb407a7396fece6388009de9608391725d4e590f1f659fcfcd7830cb644310cae4463127772fa5d00ed8f7fbc793

Download Submit
memory/188-181-0x0000000000000000-mapping.dmp

Download
memory/772-114-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/772-115-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/772-116-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/772-117-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/772-119-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/772-118-0x00007FF8468C0000-0x00007FF8493E3000-memory.dmp

Filesize
43.1MB

Download
memory/772-122-0x00007FF8413C0000-0x00007FF8424AE000-memory.dmp

Filesize
16.9MB

Download
memory/772-123-0x00007FF83F4C0000-0x00007FF8413B5000-memory.dmp

Filesize
31.0MB

Download
memory/2440-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads