09eafcde17b69cdb1de3d8230b9367c91627d50145c307ddc98564bf5f4cb5e8

General

Target

document-1658382848.xls
Size

86KB
MD5

5e859daee19655d7dd942b0c414bc753
SHA1

f43c7c5aa633ba161eaebd09316a4949bca8e061
SHA256

09eafcde17b69cdb1de3d8230b9367c91627d50145c307ddc98564bf5f4cb5e8
SHA512

f57b52319adc747c8158dcb6da990c2bde980383e5f05d9423382e1a543d5fde04d1083f2f1fe9f0e283ab2d5448d4c862ef4a993db0725fd637c938cbffdbc3

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	3352	4684	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

4684 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4684 EXCEL.EXE
4684 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE
4684	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4684 wrote to memory of 3352	4684	EXCEL.EXE	rundll32.exe
PID 4684 wrote to memory of 3352	4684	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-1658382848.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:4684
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\nxckew.wle,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3352

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/3352-7-0x0000000000000000-mapping.dmp

Download
memory/4684-2-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4684-3-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4684-4-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download
memory/4684-5-0x00007FFEEB2F0000-0x00007FFEEB927000-memory.dmp

Filesize
6.2MB

Download
memory/4684-6-0x00007FFEC57A0000-0x00007FFEC57B0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads