a7fcf4db18ca60e8cf3db3a2c3e1525e4cf4f2dbee71e24eeb454e95af2d28cb

General

Target

document-910135933.xls
Size

88KB
MD5

814282f1d7fd479acd82713add78e6c6
SHA1

0a8b3f73bad2b6c0ec9b5baf348d1734f809f4ab
SHA256

76aa36a044f5bce1d9bed46da22c92670ed558caf67745e5c1fa351710e8bb1d
SHA512

8994cb14a450b2ca9b03af6f8c698e38d4e5cfe88246b9d996dc25fc570e3c3a6e7102ad7e30e07f50f68d344b58a43a1bb82a73ff015ccd7bd5b64aa94a1e00

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	744	648	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

648 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

648 EXCEL.EXE
648 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE
648	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 648 wrote to memory of 744 648 EXCEL.EXE rundll32.exe
PID 648 wrote to memory of 744 648 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 648 wrote to memory of 744	648	EXCEL.EXE	rundll32.exe
PID 648 wrote to memory of 744	648	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-910135933.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:648

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\idefje.ekfd,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:744

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/648-2-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/648-3-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/648-4-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/648-5-0x00007FF851AF0000-0x00007FF852127000-memory.dmp

Filesize
6.2MB

Download
memory/648-6-0x00007FF82D760000-0x00007FF82D770000-memory.dmp

Filesize
64KB

Download
memory/744-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads