25d9cdf57a2603974b62bd8cf3e3fc9c64dee7ba9b98eb13f58cab24e9ee3252

General

Target

document-1683161012.xls
Size

138KB
MD5

ed6921e7824c18f5f2cb4a2779cd6833
SHA1

9beb48e7350ed7a8b36920ae37311fb9f99733b7
SHA256

25d9cdf57a2603974b62bd8cf3e3fc9c64dee7ba9b98eb13f58cab24e9ee3252
SHA512

e4faff579f7dd6b90215d1b5dda1e4341513433c51f2102d3253a7781ac2c792b2703118890aa16038e1fa13753a3cfc7c4ca7e8501289cb018a40dd186959f8

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\EXCEL.EXE is not expected to spawn this process	2480	1456	rundll32.exe	EXCEL.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:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

1456 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE
1456	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1456 wrote to memory of 2480	1456	EXCEL.EXE	rundll32.exe
PID 1456 wrote to memory of 2480	1456	EXCEL.EXE	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\document-1683161012.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1456

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2480

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1456-2-0x00007FFB33400000-0x00007FFB33410000-memory.dmp

Filesize
64KB

Download
memory/1456-3-0x00007FFB33400000-0x00007FFB33410000-memory.dmp

Filesize
64KB

Download
memory/1456-4-0x00007FFB33400000-0x00007FFB33410000-memory.dmp

Filesize
64KB

Download
memory/1456-5-0x00007FFB33400000-0x00007FFB33410000-memory.dmp

Filesize
64KB

Download
memory/1456-6-0x00007FFB568F0000-0x00007FFB56F27000-memory.dmp

Filesize
6.2MB

Download
memory/2480-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads