03fe24d7f895988c09b48880d841096dcc9e3623254884d93769a4e362473950

General

Target

documents.07.21.doc
Size

72KB
MD5

2b7fbd7553c2c0079775ff71624f6e1d
SHA1

de14f7af8b1e4f44c075f699dfedaa7ada95cc49
SHA256

03fe24d7f895988c09b48880d841096dcc9e3623254884d93769a4e362473950
SHA512

96554a7da2d220c8037281352de6271dc51fac4623ca3a55ba01035376e00a8e2f7334e9555e22706dd96f857f7bab6c3c342503c32a08335b35a0b36cc70a34

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	3108	3944	cmd.exe	WINWORD.EXE

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 2776 created 2132 2776 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

3488 2132 WerFault.exe mshta.exe
2776 2132 WerFault.exe mshta.exe

description	pid	process	target process
PID 2776 created 2132	2776	WerFault.exe	mshta.exe

pid	pid_target	process	target process
3488	2132	WerFault.exe	mshta.exe
2776	2132	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	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

3944 WINWORD.EXE
3944 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
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe
3488	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 3488 WerFault.exe
Token: SeBackupPrivilege 3488 WerFault.exe
Token: SeDebugPrivilege 3488 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	3488	WerFault.exe
Token: SeBackupPrivilege	3488	WerFault.exe
Token: SeDebugPrivilege	3488	WerFault.exe

Suspicious use of SetWindowsHookEx 14 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

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

WINWORD.EXEcmd.exe

description	pid	process	target process
PID 3944 wrote to memory of 3108	3944	WINWORD.EXE	cmd.exe
PID 3944 wrote to memory of 3108	3944	WINWORD.EXE	cmd.exe
PID 3108 wrote to memory of 2132	3108	cmd.exe	mshta.exe
PID 3108 wrote to memory of 2132	3108	cmd.exe	mshta.exe
PID 3108 wrote to memory of 2132	3108	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\documents.07.21.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:3944

C:\Windows\SYSTEM32\cmd.exe
cmd /c c:\programdata\sds.hta
2⤵
- Process spawned unexpected child process
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3108

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\programdata\sds.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
3⤵
PID:2132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2132 -s 1368
4⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2132 -s 1632
4⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Program crash
PID:2776

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

C:\programdata\sds.hta
MD5
242417bcb787a1d673f9d63b8345ba9d

SHA1
a419bcc2f1b8d0591a9c6e3469e61968c5bd7c5e

SHA256
d9b5bfe4016357985bf9afbeeab1bcfaee713e4fa6243682a47de56e3038fcb5

SHA512
d2fca175faf488df0b36b7ac263bb32ba0961a860f9d5f6e162746fdca7c0693c71c96112abb657c45e568909e6dc992d840877b19e0991e041986e22c985789

Download Submit
memory/2132-262-0x0000000000000000-mapping.dmp

Download
memory/3108-222-0x0000000000000000-mapping.dmp

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

Filesize
64KB

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

Filesize
64KB

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memory/3944-118-0x00007FFE175D0000-0x00007FFE1A0F3000-memory.dmp

Filesize
43.1MB

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memory/3944-122-0x00007FFE12480000-0x00007FFE1356E000-memory.dmp

Filesize
16.9MB

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

Filesize
31.0MB

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

Filesize
64KB

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

Filesize
64KB

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

Filesize
64KB

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memory/3944-351-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

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memory/3944-352-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3944-353-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3944-354-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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