b7f2dddd27a7118f6f6cc3923f2af1f83ca5b8ea722ea05f6b27845469899c67

General

Target

files.07.20.doc
Size

113KB
MD5

92a40c2f9e0bf1e05363dda2f4e69d02
SHA1

7237b18aef7d35c08ebc46be5399f35d2f745ab5
SHA256

b7f2dddd27a7118f6f6cc3923f2af1f83ca5b8ea722ea05f6b27845469899c67
SHA512

f9146ddc08cf85c510bda54c8996b8f3d74ab7b92ade0b5d160094b561eb4b2a93e149aa336bdfb2bc10a814583e466e82d2ae253489fe21c5bee7e960b9e353

Score

10^/10

Malware Config

Signatures

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

Suspicious use of SetWindowsHookEx 19 IoCs

Processes:

WINWORD.EXE

pid	process
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE
2728	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

2728 WINWORD.EXE
2728 WINWORD.EXE

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

regsvr32.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	736	2728	regsvr32.exe	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

WINWORD.EXEregsvr32.exe

description	pid	process	target process
PID 2728 wrote to memory of 736	2728	WINWORD.EXE	regsvr32.exe
PID 2728 wrote to memory of 736	2728	WINWORD.EXE	regsvr32.exe
PID 736 wrote to memory of 412	736	regsvr32.exe	regsvr32.exe
PID 736 wrote to memory of 412	736	regsvr32.exe	regsvr32.exe
PID 736 wrote to memory of 412	736	regsvr32.exe	regsvr32.exe

Loads dropped DLL 1 IoCs

Processes:

regsvr32.exe

pid process

412 regsvr32.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

regsvr32.exe

pid process

412 regsvr32.exe
412 regsvr32.exe

pid	process
412	regsvr32.exe

pid	process
412	regsvr32.exe
412	regsvr32.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.07.20.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
PID:2728

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 nl.tmp
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:736

C:\Windows\SysWOW64\regsvr32.exe
nl.tmp
3⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:412

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

C:\Users\Admin\AppData\Local\Temp\nl.tmp

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\Users\Admin\AppData\Local\Temp\nl.tmp

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memory/412-6-0x0000000000000000-mapping.dmp

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memory/736-4-0x0000000000000000-mapping.dmp

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memory/2728-0-0x00000145A5673000-0x00000145A5678000-memory.dmp

Filesize
20KB

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memory/2728-1-0x00000145A5673000-0x00000145A5678000-memory.dmp

Filesize
20KB

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memory/2728-2-0x00000145A5673000-0x00000145A5678000-memory.dmp

Filesize
20KB

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memory/2728-3-0x00000145A58A9000-0x00000145A58AE000-memory.dmp

Filesize
20KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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