5c91331970cffec23723601bfed9c57ead95bbf9e025557ccc52fd04fa86a277

Analysis

max time kernel
135s
max time network
145s
platform
windows10-1703_x64
resource
win10-20230220-ja
resource tags

arch:x64arch:x86image:win10-20230220-jalocale:ja-jpos:windows10-1703-x64systemwindows
submitted
15-03-2023 06:25

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General

Target

2023-03-08_1026.doc
Size

506.3MB
MD5

0ba669a2667d28ea6f61262ecdfd34e0
SHA1

3e939d4cd1c0844de6c7ca9a8471858ddb1cfc8a
SHA256

5d16d4ce034ee7b7911e9acb53f1e75bff1940476dc1ec4b56f2a6d978da9cd0
SHA512

b2c8bfa9e79e003506869187580e80806ba8e87364c250c7b2f5c3cdafc0077bd048604af42e92fa2c1186451f963ca08d0aa16bfe8143cd0fc6b54a3d7ca48a
SSDEEP

6144:xPn4VZXbatu7MDogsDkHS50LdfcGcbz1f5M9KTFrMpSlMK3Ru+Q28:xP4PbNMkgg3Ru+x

Score

1^/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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

Script User-Agent 7 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	18	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	8	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	10	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	12	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	14	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	16	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

4372 WINWORD.EXE
4372 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	WINWORD.EXE
4372	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\2023-03-08_1026.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4372

C:\Windows\System32\IME\SHARED\imebroker.exe
C:\Windows\System32\IME\SHARED\imebroker.exe -Embedding
1⤵
PID:2448

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2376

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/4372-119-0x00007FFD114A0000-0x00007FFD114B0000-memory.dmp

Filesize
64KB

Download
memory/4372-120-0x00007FFD114A0000-0x00007FFD114B0000-memory.dmp

Filesize
64KB

Download
memory/4372-121-0x00007FFD114A0000-0x00007FFD114B0000-memory.dmp

Filesize
64KB

Download
memory/4372-122-0x00007FFD114A0000-0x00007FFD114B0000-memory.dmp

Filesize
64KB

Download
memory/4372-125-0x00007FFD0E5C0000-0x00007FFD0E5D0000-memory.dmp

Filesize
64KB

Download
memory/4372-126-0x00007FFD0E5C0000-0x00007FFD0E5D0000-memory.dmp

Filesize
64KB

Download