19b5d779fd59c2b1804659034f13c4e9706742ce3fc0f71c5852b20f9c30ab96

General

Target

document-404114370.xls
Size

138KB
MD5

c2a724ba16a200c2eace74b9f0059cb7
SHA1

6cd4d6417e888ff16cab1fb9c45824eb6f7b260c
SHA256

2ee325d1f3f100c7e1b002b6ed27c6cbc123e015c5519f69a814699306b56bd3
SHA512

42956fd6eb5a2ca0e5d818e36ca8ba7ef9f07baf549d9f301ae9bfe3b6d942b2cdab000f01298943a2016dc4f06b032abe3871cc9a363b4f0a56be09de0d59b0

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	572	4764	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

4764 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE
4764	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 4764 wrote to memory of 572 4764 EXCEL.EXE rundll32.exe
PID 4764 wrote to memory of 572 4764 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 4764 wrote to memory of 572	4764	EXCEL.EXE	rundll32.exe
PID 4764 wrote to memory of 572	4764	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-404114370.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4764

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:572

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/572-7-0x0000000000000000-mapping.dmp

Download
memory/4764-2-0x00007FFACA170000-0x00007FFACA180000-memory.dmp

Filesize
64KB

Download
memory/4764-3-0x00007FFACA170000-0x00007FFACA180000-memory.dmp

Filesize
64KB

Download
memory/4764-4-0x00007FFACA170000-0x00007FFACA180000-memory.dmp

Filesize
64KB

Download
memory/4764-5-0x00007FFAEE550000-0x00007FFAEEB87000-memory.dmp

Filesize
6.2MB

Download
memory/4764-6-0x00007FFACA170000-0x00007FFACA180000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads