42f18ed050fa615002c777ce86a9b464540358b31010b5cfc4bec98137ba753e

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18/09/2022, 22:26

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General

Target

42f18ed050fa615002c777ce86a9b464540358b31010b5cfc4bec98137ba753e.xls
Size

108KB
MD5

55d3b2bcea799abc14492f9a46749d19
SHA1

b4269a8a48deb2ce13c91a6875de089b44bad310
SHA256

42f18ed050fa615002c777ce86a9b464540358b31010b5cfc4bec98137ba753e
SHA512

b6d5602e64f978282597e9c3668f53c5391df6491b208964e7bdc414a5b13c13b67494025f1c6e304982da7492b0b8f1810b4cfaf16865255b41cf8855357bab
SSDEEP

1536:oeeeqreSRHrTCWJGS1102ufmgOzIE8y5LgwLOiTwhWVbKp8zmOzQ7ITkiD2gukOf:CfzIWVb9nzQ7ITkDc/MJtXwuv4DKb

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	3876	4996	cmd.exe	80
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4752	4996	cmd.exe	80
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4880	4996	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 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

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

pid	Process
4996	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE
4996	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 3876	4996	EXCEL.EXE	92
PID 4996 wrote to memory of 3876	4996	EXCEL.EXE	92
PID 4996 wrote to memory of 4752	4996	EXCEL.EXE	94
PID 4996 wrote to memory of 4752	4996	EXCEL.EXE	94
PID 4996 wrote to memory of 4880	4996	EXCEL.EXE	95
PID 4996 wrote to memory of 4880	4996	EXCEL.EXE	95
PID 3876 wrote to memory of 756	3876	cmd.exe	98
PID 3876 wrote to memory of 756	3876	cmd.exe	98

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
756	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\42f18ed050fa615002c777ce86a9b464540358b31010b5cfc4bec98137ba753e.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4996
- 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:3876
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:756
- 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:4752
- 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:4880

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4996-132-0x00007FFB88250000-0x00007FFB88260000-memory.dmp

Filesize
64KB

Download
memory/4996-133-0x00007FFB88250000-0x00007FFB88260000-memory.dmp

Filesize
64KB

Download
memory/4996-134-0x00007FFB88250000-0x00007FFB88260000-memory.dmp

Filesize
64KB

Download
memory/4996-135-0x00007FFB88250000-0x00007FFB88260000-memory.dmp

Filesize
64KB

Download
memory/4996-136-0x00007FFB88250000-0x00007FFB88260000-memory.dmp

Filesize
64KB

Download
memory/4996-137-0x00007FFB85B30000-0x00007FFB85B40000-memory.dmp

Filesize
64KB

Download
memory/4996-138-0x00007FFB85B30000-0x00007FFB85B40000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads