2161546f95ba248ef18336984b39e0a97266af5a985a97118265b11f76f46c99

General

Target

document-232490250.xls
Size

138KB
MD5

e4cf46b35d3d71337b1ea4d2fd7aa6e6
SHA1

3688deb57422a0bcac4875e49f47c9207aa8c4f9
SHA256

a3dd883fef791bb1702169b25faa3416a76a818af4207ebfd355bbf3e57aec22
SHA512

011aa94a244eb718a584d56443dfbfee0ca24637c5833319799bc8228dce3b66f2b27980818b20fa1afb4bb61cb32c4d378e8f31081dbb7cba6880dacd69cf97

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	2788	1032	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

1032 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE
1032	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1032 wrote to memory of 2788	1032	EXCEL.EXE	rundll32.exe
PID 1032 wrote to memory of 2788	1032	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-232490250.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1032

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\zfbfg.ere,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2788

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/1032-2-0x00007FFC119D0000-0x00007FFC119E0000-memory.dmp

Filesize
64KB

Download
memory/1032-3-0x00007FFC119D0000-0x00007FFC119E0000-memory.dmp

Filesize
64KB

Download
memory/1032-4-0x00007FFC119D0000-0x00007FFC119E0000-memory.dmp

Filesize
64KB

Download
memory/1032-5-0x00007FFC35440000-0x00007FFC35A77000-memory.dmp

Filesize
6.2MB

Download
memory/1032-6-0x00007FFC119D0000-0x00007FFC119E0000-memory.dmp

Filesize
64KB

Download
memory/2788-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads