30d32f41bb3853a46a0625883e180b38599fe4b67eb5a65dc8a92d0626797f4e

General

Target

document-1627621543.xls
Size

138KB
MD5

f3f068df7f15a9b1700c5b59e6f8db2f
SHA1

e398e7513f72cafc29bad79f7f3fabbdb9190aca
SHA256

30d32f41bb3853a46a0625883e180b38599fe4b67eb5a65dc8a92d0626797f4e
SHA512

8e22f70f0c25193d7aa0db542ca63d453139211383d52f30e7bfab81a38180954163a30ad3aa5c0bbf6e14b23384a8ff2d3d2b0e48e13d29496c5a372442d233

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	3884	692	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

692 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE
692	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 692 wrote to memory of 3884 692 EXCEL.EXE rundll32.exe
PID 692 wrote to memory of 3884 692 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 692 wrote to memory of 3884	692	EXCEL.EXE	rundll32.exe
PID 692 wrote to memory of 3884	692	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-1627621543.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:692

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/692-2-0x00007FFE498B0000-0x00007FFE498C0000-memory.dmp

Filesize
64KB

Download
memory/692-3-0x00007FFE498B0000-0x00007FFE498C0000-memory.dmp

Filesize
64KB

Download
memory/692-4-0x00007FFE498B0000-0x00007FFE498C0000-memory.dmp

Filesize
64KB

Download
memory/692-5-0x00007FFE498B0000-0x00007FFE498C0000-memory.dmp

Filesize
64KB

Download
memory/692-6-0x00007FFE6C830000-0x00007FFE6CE67000-memory.dmp

Filesize
6.2MB

Download
memory/3884-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads