a997e1b9b9b89540bd374299b18e30dde4137a2d28ea90b071aecf1b0e43449b

General

Target

a997e1b9b9b89540bd374299b18e30dde4137a2d28ea90b071aecf1b0e43449b.xls
Size

111KB
MD5

46a97ec83219459effa22712c46ff18d
SHA1

9fbc8b05e2294c0e3c072763e3ec5c3061d458f9
SHA256

a997e1b9b9b89540bd374299b18e30dde4137a2d28ea90b071aecf1b0e43449b
SHA512

2a9381324a4607b73eb80aca11f3601537f59f2236b1ed2817d256f72288f02b9d6ef3cd2a6d67a4d8cd95af26abce6b779519c01e6fab04007549afc4d8ae23
SSDEEP

1536:7SXLXdG4fgkWVbrEKJfQ7ITkR62NCsY7nJdMcOu4/WwF15zM2M/MjaS:0dGUWVbr51Q7ITk9w4Bu5kOS

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	1264	2820	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2708	2820	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1304	2820	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2820 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE
2820	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2820 wrote to memory of 1264	2820	EXCEL.EXE	cmd.exe
PID 2820 wrote to memory of 1264	2820	EXCEL.EXE	cmd.exe
PID 2820 wrote to memory of 2708	2820	EXCEL.EXE	cmd.exe
PID 2820 wrote to memory of 2708	2820	EXCEL.EXE	cmd.exe
PID 2820 wrote to memory of 1304	2820	EXCEL.EXE	cmd.exe
PID 2820 wrote to memory of 1304	2820	EXCEL.EXE	cmd.exe
PID 1264 wrote to memory of 260	1264	cmd.exe	attrib.exe
PID 1264 wrote to memory of 260	1264	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

260 attrib.exe

pid	process
260	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\a997e1b9b9b89540bd374299b18e30dde4137a2d28ea90b071aecf1b0e43449b.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2820

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:1264

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:260

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:2708

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:1304

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

Replay Monitor

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Downloads

memory/260-144-0x0000000000000000-mapping.dmp

Download
memory/1264-140-0x0000000000000000-mapping.dmp

Download
memory/1304-143-0x0000000000000000-mapping.dmp

Download
memory/2708-141-0x0000000000000000-mapping.dmp

Download
memory/2820-137-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-138-0x00007FFFBAAF0000-0x00007FFFBAB00000-memory.dmp

Filesize
64KB

Download
memory/2820-139-0x00007FFFBAAF0000-0x00007FFFBAB00000-memory.dmp

Filesize
64KB

Download
memory/2820-133-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-136-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-142-0x0000026260FBA000-0x0000026260FBC000-memory.dmp

Filesize
8KB

Download
memory/2820-135-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-134-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-145-0x0000026260FBA000-0x0000026260FBC000-memory.dmp

Filesize
8KB

Download
memory/2820-147-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-148-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-149-0x00007FFFBCD90000-0x00007FFFBCDA0000-memory.dmp

Filesize
64KB

Download
memory/2820-150-0x00007FFFBCD90000-0x00007FFFBCDA0000-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