3c59ad7c4426e8396369f084c35a2bd3f0caa3ba1d1a91794153507210a77c90

Resubmissions

13-01-2021 08:09

210113-m1cmwhx8ls 10

13-01-2021 08:05

210113-8e913ch4ex 10

Analysis

max time kernel
140s
max time network
139s
platform
windows10_x64
resource
win10v20201028
submitted
13-01-2021 08:05

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General

Target

mal.doc
Size

63KB
MD5

7b5f1c01980faf7801f16a761cb8d377
SHA1

ee47206c87482de1915b1e441a23a5b3473697e3
SHA256

3c59ad7c4426e8396369f084c35a2bd3f0caa3ba1d1a91794153507210a77c90
SHA512

26172fb0bbe1b3fc46fedd7a50eeba589134bb9feeb503271c52eec9ec973131b0cfd0a343232dd9f72552fe48dcd70244be416f80237cf9e5773766355e412a

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:

notepad.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	3700	3992	notepad.exe	WINWORD.EXE

Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

notepad.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion notepad.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Drops file in Windows directory 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Windows\19303.dat notepad.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	notepad.exe

description	ioc	process
File created	C:\Windows\19303.dat	notepad.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

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3992 WINWORD.EXE
3992 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

notepad.exe

pid process

3700 notepad.exe
3700 notepad.exe
3700 notepad.exe
3700 notepad.exe
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

WINWORD.EXE

pid process

3992 WINWORD.EXE
3992 WINWORD.EXE
3992 WINWORD.EXE
3992 WINWORD.EXE
3992 WINWORD.EXE
3992 WINWORD.EXE
3992 WINWORD.EXE
3992 WINWORD.EXE

pid	process
3992	WINWORD.EXE
3992	WINWORD.EXE

pid	process
3700	notepad.exe
3700	notepad.exe
3700	notepad.exe
3700	notepad.exe

pid	process
3992	WINWORD.EXE
3992	WINWORD.EXE
3992	WINWORD.EXE
3992	WINWORD.EXE
3992	WINWORD.EXE
3992	WINWORD.EXE
3992	WINWORD.EXE
3992	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 3992 wrote to memory of 3700	3992	WINWORD.EXE	notepad.exe
PID 3992 wrote to memory of 3700	3992	WINWORD.EXE	notepad.exe
PID 3992 wrote to memory of 3700	3992	WINWORD.EXE	notepad.exe
PID 3992 wrote to memory of 3700	3992	WINWORD.EXE	notepad.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\mal.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:3992

C:\Windows\SysWOW64\notepad.exe
C:\Windows\SysWOW64\notepad.exe
2⤵
- Process spawned unexpected child process
- Checks BIOS information in registry
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:3700

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3700-3-0x0000000000000000-mapping.dmp

Download
memory/3700-4-0x0000000000540000-0x0000000000541000-memory.dmp

Filesize
4KB

Download
memory/3992-2-0x00007FFC2FD90000-0x00007FFC303C7000-memory.dmp

Filesize
6.2MB

Download