febbc5ed972af6a662baf6305b758c5230e185d0c92c0731fb67bd29dc76f750

Resubmissions

29-05-2020 16:38

200529-p21kba1x7n 10

Analysis

max time kernel
145s
max time network
134s
platform
windows10_x64
resource
win10v200430
submitted
29-05-2020 16:38

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General

Target

require.05.20.doc
Size

72KB
MD5

9f04925d84fc7155683294c713aeeb58
SHA1

95f774a93375a049246ffce99e4c0da5e5ad18a5
SHA256

427a5c15ca89981ea6386e8a262474f80a47f07af10663478b9c7728fc054d54
SHA512

272a5de403ed83f83b0c17f13a2b0919fc8ee5c8b598edda149c6ba4bfdda14a03383dd514e4fe84f7b2c8baaeaf91075407b8c81391a4920d01636431289a0a

Score

10^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 3544 wrote to memory of 3020	3544	WINWORD.EXE	Regsvr32.exe
PID 3544 wrote to memory of 3020	3544	WINWORD.EXE	Regsvr32.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

Suspicious use of SetWindowsHookEx 19 IoCs

Processes:

WINWORD.EXE

pid	process
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE
3544	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3544 WINWORD.EXE
3544 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	3020	3544	Regsvr32.exe	WINWORD.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\require.05.20.doc" /o ""
1⤵
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
PID:3544

C:\Windows\SYSTEM32\Regsvr32.exe
Regsvr32 c:\programdata\49452677.dat
2⤵
- Process spawned unexpected child process
PID:3020

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3544-0-0x000002083B70F000-0x000002083B73C000-memory.dmp

Filesize
180KB

Download
memory/3544-1-0x0000020840271000-0x0000020840276000-memory.dmp

Filesize
20KB

Download
memory/3544-2-0x0000020840271000-0x0000020840276000-memory.dmp

Filesize
20KB

Download
memory/3544-3-0x0000020840271000-0x0000020840276000-memory.dmp

Filesize
20KB

Download
memory/3544-4-0x0000020840271000-0x0000020840276000-memory.dmp

Filesize
20KB

Download
memory/3544-5-0x0000020840270000-0x0000020840271000-memory.dmp

Filesize
4KB

Download