f6f9f1ab6983eac01a0e5e3fcb9fe6bb0a94c86440097ae88d481356b70577e4

General

Target

document-2114004091.xls
Size

138KB
MD5

b1a3d8f090e90e5845c2b7077e2f4789
SHA1

6614439ad4720ef66bf09e915f86c3013ad65ee4
SHA256

f6f9f1ab6983eac01a0e5e3fcb9fe6bb0a94c86440097ae88d481356b70577e4
SHA512

250d217e512f8e43427fcd2a80db695cc2fd2b4e7e7995b115e45cf17de7556ac40f40747fb54f6b2471b5b86afef5b994b666e3317f38e4f170c4e225366fcc

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	3980	644	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

644 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 644 wrote to memory of 3980 644 EXCEL.EXE rundll32.exe
PID 644 wrote to memory of 3980 644 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 644 wrote to memory of 3980	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 3980	644	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-2114004091.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3980

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/644-2-0x00007FF9DD1F0000-0x00007FF9DD200000-memory.dmp

Filesize
64KB

Download
memory/644-3-0x00007FF9DD1F0000-0x00007FF9DD200000-memory.dmp

Filesize
64KB

Download
memory/644-4-0x00007FF9DD1F0000-0x00007FF9DD200000-memory.dmp

Filesize
64KB

Download
memory/644-5-0x00007FF9DD1F0000-0x00007FF9DD200000-memory.dmp

Filesize
64KB

Download
memory/644-6-0x00007FFA006B0000-0x00007FFA00CE7000-memory.dmp

Filesize
6.2MB

Download
memory/3980-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads