f37cdb7579a8b57ff8517959cad4641246121401874ff139a45bbeed5beeba74

Analysis

max time kernel
141s
max time network
139s
platform
windows10_x64
resource
win10v20201028
submitted
26-11-2020 16:02

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General

Target

document-1543772758.xls
Size

331KB
MD5

b3c08c0f3bc95a84618feed7b2308b68
SHA1

7eb1f6fa6862605afcb49b3d0685df06a980dffe
SHA256

f37cdb7579a8b57ff8517959cad4641246121401874ff139a45bbeed5beeba74
SHA512

b578038f103302690a14faa5500f1ac2018f34bae9cdf4dbc0320dcac26c077788a9b6c8dcc23ce37662b565dc2a258f308ee4c59aa47dfd87b58eeb145f6003

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:

regsvr32.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	584	64	regsvr32.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

64 EXCEL.EXE
Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid process

64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
64 EXCEL.EXE
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 64 wrote to memory of 584 64 EXCEL.EXE regsvr32.exe
PID 64 wrote to memory of 584 64 EXCEL.EXE regsvr32.exe

pid	process
64	EXCEL.EXE

pid	process
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE
64	EXCEL.EXE

description	pid	process	target process
PID 64 wrote to memory of 584	64	EXCEL.EXE	regsvr32.exe
PID 64 wrote to memory of 584	64	EXCEL.EXE	regsvr32.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-1543772758.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:64

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 -s C:\giogti\mpomqr\fwpxeohi.dll
2⤵
- Process spawned unexpected child process
PID:584

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/64-2-0x00007FFE6CA90000-0x00007FFE6D0C7000-memory.dmp

Filesize
6.2MB

Download
memory/584-3-0x0000000000000000-mapping.dmp

Download