81e2fd451ff6ced73b60b65e112ee0df0908a623af5c6619fa4bd0095e0fe304

General

Target

81e2fd451ff6ced73b60b65e112ee0df0908a623af5c6619fa4bd0095e0fe304.xls
Size

108KB
MD5

876f3b0340bef12065ccf17e1fbbcdb0
SHA1

8c0fe05d69c55dfae12240383b7025e598d34d5c
SHA256

81e2fd451ff6ced73b60b65e112ee0df0908a623af5c6619fa4bd0095e0fe304
SHA512

409700075ebb6660755b12857832fc0e1cdf65c36dec847ee03aeee326dcee07130f3f003215f0aa039e3eb18d0167caf415e5b561f3c5b409a904a80ba9e76d
SSDEEP

3072:Dul6Nc7yRzs1H75wkZUb2rMKyWmrAETNLWVbLIbgzQ7ITkcpcJtXwHekLJ:6l6Nc7yRzs1H75wkZUb2rMKyWmrAETNF

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	2984	2940	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5048	2940	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4576	2940	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2940 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

2940 EXCEL.EXE
2940 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE
2940	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2940 wrote to memory of 2984	2940	EXCEL.EXE	cmd.exe
PID 2940 wrote to memory of 2984	2940	EXCEL.EXE	cmd.exe
PID 2940 wrote to memory of 4576	2940	EXCEL.EXE	cmd.exe
PID 2940 wrote to memory of 4576	2940	EXCEL.EXE	cmd.exe
PID 2940 wrote to memory of 5048	2940	EXCEL.EXE	cmd.exe
PID 2940 wrote to memory of 5048	2940	EXCEL.EXE	cmd.exe
PID 2984 wrote to memory of 4428	2984	cmd.exe	attrib.exe
PID 2984 wrote to memory of 4428	2984	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4428 attrib.exe

pid	process
4428	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\81e2fd451ff6ced73b60b65e112ee0df0908a623af5c6619fa4bd0095e0fe304.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2940

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:2984

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4428

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:5048

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:4576

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\04120298d0964fca820ac4d3a9e7eab1 /t 4016 /p 2940
1⤵
PID:1748

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/2940-132-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/2940-134-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/2940-133-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/2940-135-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/2940-136-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Filesize
64KB

Download
memory/2940-137-0x00007FFA3ECC0000-0x00007FFA3ECD0000-memory.dmp

Filesize
64KB

Download
memory/2940-138-0x00007FFA3ECC0000-0x00007FFA3ECD0000-memory.dmp

Filesize
64KB

Download
memory/2984-139-0x0000000000000000-mapping.dmp

Download
memory/4428-142-0x0000000000000000-mapping.dmp

Download
memory/4576-140-0x0000000000000000-mapping.dmp

Download
memory/5048-141-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads