11fc6451a6357f7367e8c1d4c2ae535940e1181502c2b5188c1df6f5f903480d

General

Target

instruct_05.21.doc
Size

78KB
MD5

5eb8c721056734d05ffe0e63b69cdcad
SHA1

d6e4d88641da3f8288f05b22df0605c70ad6526e
SHA256

7ceb6f0c9e30c3a867010d2fdab80a0f1ee36e26e16f4a34bc0a9b5578411128
SHA512

67c2961190b14ff29612cc28f120dcdac9188fa66decb02bfc6c63efd22bfc85c63219d7e91be5ed9aaf2d3323634ccd9df5098ff5701982115d745f757e1043

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	572	644	explorer.exe	WINWORD.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2268 2292 WerFault.exe mshta.exe

pid	pid_target	process	target process
2268	2292	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-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings explorer.exe
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

644 WINWORD.EXE
644 WINWORD.EXE

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

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

WerFault.exe

pid	process
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe
2268	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 2268 WerFault.exe
Token: SeBackupPrivilege 2268 WerFault.exe
Token: SeDebugPrivilege 2268 WerFault.exe

description	pid	process
Token: SeRestorePrivilege	2268	WerFault.exe
Token: SeBackupPrivilege	2268	WerFault.exe
Token: SeDebugPrivilege	2268	WerFault.exe

Suspicious use of SetWindowsHookEx 19 IoCs

Processes:

WINWORD.EXE

pid	process
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE
644	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

WINWORD.EXEexplorer.exe

description	pid	process	target process
PID 644 wrote to memory of 572	644	WINWORD.EXE	explorer.exe
PID 644 wrote to memory of 572	644	WINWORD.EXE	explorer.exe
PID 1664 wrote to memory of 2292	1664	explorer.exe	mshta.exe
PID 1664 wrote to memory of 2292	1664	explorer.exe	mshta.exe
PID 1664 wrote to memory of 2292	1664	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\instruct_05.21.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:644

C:\Windows\explorer.exe
explorer c:\users\public\memoryWindow.hta
2⤵
- Process spawned unexpected child process
PID:572

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Public\memoryWindow.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
2⤵
PID:2292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2292 -s 1312
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2268

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\memoryWindow.hta
MD5
65ca2fd2d4e2ec54449b4bdca1392634

SHA1
b3ec9a2d8b07c0f60ed66fc9e5f6226cd81dcd81

SHA256
26bae7be0cc3a631d99de421a514901d4ce0f5174d68146c22c0877faa5bb0d4

SHA512
27273bdd0d43a7065e6a98b23989922cfc074d4d92766c4e08abf5eca00945b001d3a9e6eaf8af1bc6f58e4d8a0ef80085645fafdf832b9317df78a30a7577de

Download Submit
memory/572-180-0x0000000000000000-mapping.dmp

Download
memory/644-114-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/644-115-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/644-116-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/644-117-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/644-119-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/644-118-0x00007FFB9CE30000-0x00007FFB9F953000-memory.dmp

Filesize
43.1MB

Download
memory/644-122-0x00007FFB98300000-0x00007FFB993EE000-memory.dmp

Filesize
16.9MB

Download
memory/644-123-0x00007FFB95D10000-0x00007FFB97C05000-memory.dmp

Filesize
31.0MB

Download
memory/644-179-0x000001B0D7160000-0x000001B0D7164000-memory.dmp

Filesize
16KB

Download
memory/2292-182-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads