3077665553190f8494f5e7779098686eb94778eaa6e1ef498d8ee06b10236744

General

Target

input_12.20.doc

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:

rundll32.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	2496	3928	rundll32.exe	WINWORD.EXE

Blocklisted process makes network request 9 IoCs

Processes:

mshta.exerundll32.exe

flow	pid	process
23	3144	mshta.exe
28	1528	rundll32.exe
30	1528	rundll32.exe
35	1528	rundll32.exe
39	1528	rundll32.exe
41	1528	rundll32.exe
43	1528	rundll32.exe
45	1528	rundll32.exe
47	1528	rundll32.exe

Downloads MZ/PE file
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1528 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1528	rundll32.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:

rundll32.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings rundll32.exe
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3928 WINWORD.EXE
3928 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

1528 rundll32.exe
1528 rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings	rundll32.exe

pid	process
1528	rundll32.exe
1528	rundll32.exe

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

WINWORD.EXE

pid	process
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE
3928	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

WINWORD.EXErundll32.exemshta.exe

description	pid	process	target process
PID 3928 wrote to memory of 2496	3928	WINWORD.EXE	rundll32.exe
PID 3928 wrote to memory of 2496	3928	WINWORD.EXE	rundll32.exe
PID 2496 wrote to memory of 3144	2496	rundll32.exe	mshta.exe
PID 2496 wrote to memory of 3144	2496	rundll32.exe	mshta.exe
PID 2496 wrote to memory of 3144	2496	rundll32.exe	mshta.exe
PID 3144 wrote to memory of 1528	3144	mshta.exe	rundll32.exe
PID 3144 wrote to memory of 1528	3144	mshta.exe	rundll32.exe
PID 3144 wrote to memory of 1528	3144	mshta.exe	rundll32.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\input_12.20.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:3928

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" url.dll,OpenURL c:\users\public\index.hta
2⤵
- Process spawned unexpected child process
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2496

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\index.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
3⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3144

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" c:\programdata\aK2TUb.pdf,ShowDialogA -r
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:1528

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\users\public\index.hta
MD5
8983ba41e1c99c3e4c9aff611761c3f0

SHA1
f239ccc0def9802ec8a03f75d124ad1447b274ee

SHA256
206f477c988d35c480f1c733a04b39ad981262973810407e4fbb879dc4cb2d1f

SHA512
31529a53db27aea18155330f8a26ec5090f1ac8cc9996c9374d4c9c749a02fe70b9fb070b1649c58f1e127fe7d5d2884ffabccfcc97b2bd0616fac3f88b1e460

Download Submit
\??\c:\programdata\aK2TUb.pdf
MD5
160e2feffa3b8d5c79cd5954e8c00eba

SHA1
58f095a795c6e46c0db36a1a11be77c4f288a0f8

SHA256
f7909c265343edee420578aff110763cf101d4f38ebf7000fefd958fa7e4f1c7

SHA512
60f7b31fa8e04ed8ed667a7c40c6b97f4c86b8c259aff9d859d8209ad5e0dd888a27f10ed91d0fd2477ccae08d91a010f430b0e9fc9f35b94a896358b3f9fc66

Download Submit
\ProgramData\aK2TUb.pdf
MD5
160e2feffa3b8d5c79cd5954e8c00eba

SHA1
58f095a795c6e46c0db36a1a11be77c4f288a0f8

SHA256
f7909c265343edee420578aff110763cf101d4f38ebf7000fefd958fa7e4f1c7

SHA512
60f7b31fa8e04ed8ed667a7c40c6b97f4c86b8c259aff9d859d8209ad5e0dd888a27f10ed91d0fd2477ccae08d91a010f430b0e9fc9f35b94a896358b3f9fc66

Download Submit
memory/1528-7-0x0000000000000000-mapping.dmp

Download
memory/2496-4-0x0000000000000000-mapping.dmp

Download
memory/3144-6-0x0000000000000000-mapping.dmp

Download
memory/3928-2-0x0000023FDFA30000-0x0000023FE0067000-memory.dmp

Filesize
6.2MB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads