f5cf9afaa2944a1318e8b23dbc7685ed12558933879b4c475facb42b3fb540ea

Analysis

max time kernel
238s
max time network
293s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
13-09-2023 02:26

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General

Target

Cover Letter from CORP Tax - VTAF.doc
Size

223KB
MD5

eead8bbf1327c651495104a15ff9808f
SHA1

9a37a16d0e9e9ebd530bdbe4c7eef72cf72f269f
SHA256

c1f22d0fb64e3d6eab09258d3bba9abf34c9118bfd74f60679f6d19fd39e4620
SHA512

a7431f30dc8f87f2268006529f2f9398d047dd20597e5491e080502032f463cd3737090292240fd2184cf0809465b9249a0339d4aeb6de1cc77e00886a38b82b
SSDEEP

1536:ebIj7Lnorav89AVo3r2NVrmt94TTS9Wkkra+a9NXQpVU8ZCJ:kiWa09Jb2rI94SMkkrPVU8

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4588 1440 WerFault.exe

pid	pid_target	process	target process
4588	1440	WerFault.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

4136 WINWORD.EXE
4136 WINWORD.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

4136 WINWORD.EXE
4136 WINWORD.EXE
4136 WINWORD.EXE
4136 WINWORD.EXE
4136 WINWORD.EXE
4136 WINWORD.EXE
4136 WINWORD.EXE

pid	process
4136	WINWORD.EXE
4136	WINWORD.EXE

pid	process
4136	WINWORD.EXE
4136	WINWORD.EXE
4136	WINWORD.EXE
4136	WINWORD.EXE
4136	WINWORD.EXE
4136	WINWORD.EXE
4136	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\Cover Letter from CORP Tax - VTAF.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4136

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 444 -p 1440 -ip 1440
1⤵
PID:1892

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1440 -s 2160
1⤵
- Program crash
PID:4588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
memory/4136-15-0x00007FFF089D0000-0x00007FFF089E0000-memory.dmp

Filesize
64KB

Download
memory/4136-4-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-14-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-3-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-5-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-6-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-7-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-8-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-9-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-10-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-11-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-12-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-13-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-0-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-64-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-2-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-17-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-18-0x00007FFF089D0000-0x00007FFF089E0000-memory.dmp

Filesize
64KB

Download
memory/4136-1-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-29-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-30-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-31-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-35-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-58-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-59-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-61-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-63-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-62-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download
memory/4136-60-0x00007FFF0ACF0000-0x00007FFF0AD00000-memory.dmp

Filesize
64KB

Download
memory/4136-16-0x00007FFF4AC70000-0x00007FFF4AE65000-memory.dmp

Filesize
2.0MB

Download