ccca726fa69c6d755418fc69955bfa4e7dd986e0d50e53d09d3f3de0c1437f57

General

Target

document-491783675.xls
Size

138KB
MD5

89a757ceb0633d24c3fd932f373fdaf4
SHA1

690a161d6d09cd8eb954272c2b95ddcc1ca7faf2
SHA256

805f2ad031f037b1f58c96589b61e5d13463dd193962b1dc6a0c7b94b3446386
SHA512

c7911ae6799a37132a11f5c1b3ba1613a5062b063f2339e1dc41bde60f309e0a99eb567db2a893239eed373bb5bf37fd2e8e8ee14df9c9f12234ea5b5980649c

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	1280	640	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

640 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 640 wrote to memory of 1280 640 EXCEL.EXE rundll32.exe
PID 640 wrote to memory of 1280 640 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 640 wrote to memory of 1280	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 1280	640	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-491783675.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1280

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/640-2-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-3-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-4-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-5-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-6-0x00007FFC34460000-0x00007FFC34A97000-memory.dmp

Filesize
6.2MB

Download
memory/1280-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads