b24cf24cab617f0e5e4b2dc206b61af9e5f20a33f75d27257547fb4131c285fe

Analysis

max time kernel
175s
max time network
208s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
05/12/2022, 14:23

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General

Target

b24cf24cab617f0e5e4b2dc206b61af9e5f20a33f75d27257547fb4131c285fe.xls
Size

107KB
MD5

ab983ee28a7b9d145440eb975b5c1c1f
SHA1

930882ef6ac759326fb6789beba05c5a165cfd1a
SHA256

b24cf24cab617f0e5e4b2dc206b61af9e5f20a33f75d27257547fb4131c285fe
SHA512

079809cde7fb711ad551f9a99cedafdf453f16d7f15ca8bc5d6e4ae7ef3b092613a7abd4aecfb3cf7e718186ed04e605ba6989162cb03848d32e534c7345f843
SSDEEP

1536:tUx999xlsB5pWMZjUSOWVbZwgYzQ7ITkR62lIn88ScJtXwRIM2M/MQnR+:tUUBSfWVby/zQ7ITk98jhJtXw95kOR+

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	2932	860	cmd.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4580	860	cmd.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	372	860	cmd.exe	81

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
860	EXCEL.EXE

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
860	EXCEL.EXE
860	EXCEL.EXE
860	EXCEL.EXE
860	EXCEL.EXE
860	EXCEL.EXE
860	EXCEL.EXE
860	EXCEL.EXE
860	EXCEL.EXE
860	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 860 wrote to memory of 2932	860	EXCEL.EXE	87
PID 860 wrote to memory of 2932	860	EXCEL.EXE	87
PID 860 wrote to memory of 4580	860	EXCEL.EXE	89
PID 860 wrote to memory of 4580	860	EXCEL.EXE	89
PID 860 wrote to memory of 372	860	EXCEL.EXE	91
PID 860 wrote to memory of 372	860	EXCEL.EXE	91
PID 2932 wrote to memory of 3732	2932	cmd.exe	93
PID 2932 wrote to memory of 3732	2932	cmd.exe	93

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3732	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\b24cf24cab617f0e5e4b2dc206b61af9e5f20a33f75d27257547fb4131c285fe.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:860
- 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:2932
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:3732
- 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:4580
- 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:372

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/860-132-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/860-133-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/860-134-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/860-135-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/860-136-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/860-137-0x00007FFA3ECC0000-0x00007FFA3ECD0000-memory.dmp

Filesize
64KB

Download
memory/860-138-0x00007FFA3ECC0000-0x00007FFA3ECD0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads