2f71df78df62665967e73b35e90a381062f34a3053012deb7294d61efc006758

General

Target

2f71df78df62665967e73b35e90a381062f34a3053012deb7294d61efc006758.xls
Size

114KB
MD5

03b7428b197ae16bcf8eff5e0fa9cec0
SHA1

af9a22b2e402e8a76f6fb6c0fb4be9691f6af6ab
SHA256

2f71df78df62665967e73b35e90a381062f34a3053012deb7294d61efc006758
SHA512

53d5b7fdec3f3864e03990a3850dc4ba57e8fd3a7b723166d535492402ffefeff0f2dff60cbe8a2da13d885dd49535c9b6aaa1ae57f5f68ae24cc371a17541fe
SSDEEP

1536:2ssssUA8kYg8yUJxvq0CPfXonWWVbrzQ7IIMxTHkiD23WV9WWt2XKd7hM:ByUXvqrWVbrzQ7IVxTkDKYabM

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3524	4200	cmd.exe	80
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3572	4200	cmd.exe	80
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3540	4200	cmd.exe	80

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

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

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

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\8B585E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4200	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE
4200	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4200 wrote to memory of 3524	4200	EXCEL.EXE	83
PID 4200 wrote to memory of 3524	4200	EXCEL.EXE	83
PID 4200 wrote to memory of 3572	4200	EXCEL.EXE	85
PID 4200 wrote to memory of 3572	4200	EXCEL.EXE	85
PID 4200 wrote to memory of 3540	4200	EXCEL.EXE	86
PID 4200 wrote to memory of 3540	4200	EXCEL.EXE	86
PID 3524 wrote to memory of 1712	3524	cmd.exe	89
PID 3524 wrote to memory of 1712	3524	cmd.exe	89

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1712	attrib.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\2f71df78df62665967e73b35e90a381062f34a3053012deb7294d61efc006758.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  - Suspicious use of WriteProcessMemory
  PID:3524
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:1712
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  PID:3572
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
  2⤵
  - Process spawned unexpected child process
  PID:3540

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

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/4200-136-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-137-0x00007FFF18990000-0x00007FFF189A0000-memory.dmp

Filesize
64KB

Download
memory/4200-138-0x00007FFF18990000-0x00007FFF189A0000-memory.dmp

Filesize
64KB

Download
memory/4200-132-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-135-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-134-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-133-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-143-0x000001A3786E6000-0x000001A3786E8000-memory.dmp

Filesize
8KB

Download
memory/4200-144-0x000001A3786E6000-0x000001A3786E8000-memory.dmp

Filesize
8KB

Download
memory/4200-146-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-147-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-148-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download
memory/4200-149-0x00007FFF1ACB0000-0x00007FFF1ACC0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads