77e8d430646fee3f512edaf76bb2e2d0762a11595af1b87b6ede82eae8cba227

General

Target

77e8d430646fee3f512edaf76bb2e2d0762a11595af1b87b6ede82eae8cba227.xls
Size

94KB
MD5

dc6edac97e74436f15c7a99d2e33ff72
SHA1

6f3e881eb6f5657baf8c4666fa4db1f1302759fd
SHA256

77e8d430646fee3f512edaf76bb2e2d0762a11595af1b87b6ede82eae8cba227
SHA512

0e12835ae000ae19db1a29cc3991c2b4e84ecee491aed6f7072bf37e65ab859a60313ad625910ce6f0c877f97ea302ed38e762fe58c4ffc74b26b557b5e74bd4
SSDEEP

1536:r999X9UgoRGx5/I9RizChe8EmXZ95WfRVQs2jcc0lbxOvTgZEM88kcJtXwd2u:ya2jcc0lbxOrwjnJtXwAu

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	2428	384	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	112	384	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3848	384	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\7FE65E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

384 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\7FE65E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE
384	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 384 wrote to memory of 2428	384	EXCEL.EXE	cmd.exe
PID 384 wrote to memory of 2428	384	EXCEL.EXE	cmd.exe
PID 384 wrote to memory of 112	384	EXCEL.EXE	cmd.exe
PID 384 wrote to memory of 112	384	EXCEL.EXE	cmd.exe
PID 384 wrote to memory of 3848	384	EXCEL.EXE	cmd.exe
PID 384 wrote to memory of 3848	384	EXCEL.EXE	cmd.exe
PID 2428 wrote to memory of 4676	2428	cmd.exe	attrib.exe
PID 2428 wrote to memory of 4676	2428	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4676 attrib.exe

pid	process
4676	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\77e8d430646fee3f512edaf76bb2e2d0762a11595af1b87b6ede82eae8cba227.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:384

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:2428

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4676

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:112

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:3848

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/112-140-0x0000000000000000-mapping.dmp

Download
memory/384-136-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-135-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-150-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-143-0x00000226EFEDE000-0x00000226EFEE0000-memory.dmp

Filesize
8KB

Download
memory/384-137-0x00007FFDF4E50000-0x00007FFDF4E60000-memory.dmp

Filesize
64KB

Download
memory/384-138-0x00007FFDF4E50000-0x00007FFDF4E60000-memory.dmp

Filesize
64KB

Download
memory/384-149-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-134-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-151-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-133-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-132-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/384-144-0x00000226F03D7000-0x00000226F03D9000-memory.dmp

Filesize
8KB

Download
memory/384-146-0x00000226F03D7000-0x00000226F03D9000-memory.dmp

Filesize
8KB

Download
memory/384-145-0x00000226EFEDE000-0x00000226EFEE0000-memory.dmp

Filesize
8KB

Download
memory/384-148-0x00007FFDF6EB0000-0x00007FFDF6EC0000-memory.dmp

Filesize
64KB

Download
memory/2428-139-0x0000000000000000-mapping.dmp

Download
memory/3848-141-0x0000000000000000-mapping.dmp

Download
memory/4676-142-0x0000000000000000-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