a92162739cfb9368380273095072e2a82535dc9925d0e9290e90fd919e493f0e

General

Target

a92162739cfb9368380273095072e2a82535dc9925d0e9290e90fd919e493f0e.xls
Size

107KB
MD5

d32be134c37ff510ed305664a0f8d6aa
SHA1

571b45d07715563fdb3be6a2b85b748e7b21ea5e
SHA256

a92162739cfb9368380273095072e2a82535dc9925d0e9290e90fd919e493f0e
SHA512

d3f5a27efc931831670ffd7646604985ed068b64c37b99ad98cf1d2d1d1bd3881f721b18cc656f8966e0f0adb8dcb6be695e222c6fefdbaa3666c93930a08771
SSDEEP

1536:QlllBJTYaYgoA0+k2i9WVbrzcidU97ITkR62liz2cJtXwRoM2M/MugBc:D+/6WVbrzM97ITk9iFJtXw15kFBc

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.

Processes:

cmd.execmd.execmd.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	2152	4772	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3992	4772	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	236	4772	cmd.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 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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\A5675E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4772 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\A5675E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4772 wrote to memory of 2152	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 2152	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 3992	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 3992	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 236	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 236	4772	EXCEL.EXE	cmd.exe
PID 2152 wrote to memory of 4240	2152	cmd.exe	attrib.exe
PID 2152 wrote to memory of 4240	2152	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4240 attrib.exe

pid	process
4240	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\a92162739cfb9368380273095072e2a82535dc9925d0e9290e90fd919e493f0e.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:4772

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:2152

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4240

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:3992

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:236

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

memory/236-141-0x0000000000000000-mapping.dmp

Download
memory/2152-139-0x0000000000000000-mapping.dmp

Download
memory/3992-140-0x0000000000000000-mapping.dmp

Download
memory/4240-142-0x0000000000000000-mapping.dmp

Download
memory/4772-136-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-137-0x00007FFC3D500000-0x00007FFC3D510000-memory.dmp

Filesize
64KB

Download
memory/4772-138-0x00007FFC3D500000-0x00007FFC3D510000-memory.dmp

Filesize
64KB

Download
memory/4772-132-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-135-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-134-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-133-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-143-0x00000160E3198000-0x00000160E319A000-memory.dmp

Filesize
8KB

Download
memory/4772-145-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-146-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-147-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download
memory/4772-148-0x00007FFC3FC30000-0x00007FFC3FC40000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads