4420dc219a3c12092a0b98d7fbfa2480dd97ba81468fec97e7c71165ea5868fb

General

Target

4420dc219a3c12092a0b98d7fbfa2480dd97ba81468fec97e7c71165ea5868fb.xls
Size

114KB
MD5

74cd2294dfe3bd8db7af6f63baf95734
SHA1

29f6d3e17a023b35f8cd4a8f294ac37018ca9cce
SHA256

4420dc219a3c12092a0b98d7fbfa2480dd97ba81468fec97e7c71165ea5868fb
SHA512

a6d5d488100bdd23039a54c9aab04173185890214a92b4a8cecf922c3fe2b3c71ac8bdd4957f2b989696fa0a238cae7353aa73a6dad38f542fae5747f37cec10
SSDEEP

3072:Pbn4o+VVWVbrzQ7t6WTk9ajoJtXw85k0YZKNur:Pbn4o+VX6n

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	4820	4360	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4892	4360	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3548	4360	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

4360 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE
4360	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4360 wrote to memory of 4820	4360	EXCEL.EXE	cmd.exe
PID 4360 wrote to memory of 4820	4360	EXCEL.EXE	cmd.exe
PID 4360 wrote to memory of 4892	4360	EXCEL.EXE	cmd.exe
PID 4360 wrote to memory of 4892	4360	EXCEL.EXE	cmd.exe
PID 4360 wrote to memory of 3548	4360	EXCEL.EXE	cmd.exe
PID 4360 wrote to memory of 3548	4360	EXCEL.EXE	cmd.exe
PID 4820 wrote to memory of 1684	4820	cmd.exe	attrib.exe
PID 4820 wrote to memory of 1684	4820	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1684 attrib.exe

pid	process
1684	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\4420dc219a3c12092a0b98d7fbfa2480dd97ba81468fec97e7c71165ea5868fb.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4360

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:4820

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1684

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:4892

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:3548

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/1684-143-0x0000000000000000-mapping.dmp

Download
memory/3548-142-0x0000000000000000-mapping.dmp

Download
memory/4360-138-0x00007FF9E17C0000-0x00007FF9E17D0000-memory.dmp

Filesize
64KB

Download
memory/4360-135-0x00007FF9E3F10000-0x00007FF9E3F20000-memory.dmp

Filesize
64KB

Download
memory/4360-136-0x00007FF9E3F10000-0x00007FF9E3F20000-memory.dmp

Filesize
64KB

Download
memory/4360-137-0x00007FF9E17C0000-0x00007FF9E17D0000-memory.dmp

Filesize
64KB

Download
memory/4360-132-0x00007FF9E3F10000-0x00007FF9E3F20000-memory.dmp

Filesize
64KB

Download
memory/4360-139-0x000001FC8EEFC000-0x000001FC8EEFE000-memory.dmp

Filesize
8KB

Download
memory/4360-133-0x00007FF9E3F10000-0x00007FF9E3F20000-memory.dmp

Filesize
64KB

Download
memory/4360-134-0x00007FF9E3F10000-0x00007FF9E3F20000-memory.dmp

Filesize
64KB

Download
memory/4360-144-0x000001FC8B326000-0x000001FC8B328000-memory.dmp

Filesize
8KB

Download
memory/4360-145-0x000001FC8EEFC000-0x000001FC8EEFE000-memory.dmp

Filesize
8KB

Download
memory/4360-146-0x000001FC8B326000-0x000001FC8B328000-memory.dmp

Filesize
8KB

Download
memory/4820-140-0x0000000000000000-mapping.dmp

Download
memory/4892-141-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads