1b21355e9ed914871270fe883864fc9779b3bde3d437d05afe72b2b8acd83cf3

General

Target

1b21355e9ed914871270fe883864fc9779b3bde3d437d05afe72b2b8acd83cf3.xls
Size

85KB
MD5

91ce167f69157a084bf64393142cda07
SHA1

91c95de2558ad6289c64ffb1abf654353f04c671
SHA256

1b21355e9ed914871270fe883864fc9779b3bde3d437d05afe72b2b8acd83cf3
SHA512

d69b68a7094cb3543bcd42eaeb6747e1838f8d4812795d231a87d734f42987adca086b7a7850fa67dc902977e386d80a6d289ad0659e29dc43931403c7614047
SSDEEP

1536:93333TKJKiu1WVbrzQ7ITkcDmsA2H4sY7nJdMcOu4/WwFKFZPB:6iWVbrzQ7ITkYVY4Gj5

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	2280	800	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2756	800	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1588	800	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\EEF65E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

800 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\EEF65E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE
800	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 800 wrote to memory of 2280	800	EXCEL.EXE	cmd.exe
PID 800 wrote to memory of 2280	800	EXCEL.EXE	cmd.exe
PID 800 wrote to memory of 2756	800	EXCEL.EXE	cmd.exe
PID 800 wrote to memory of 2756	800	EXCEL.EXE	cmd.exe
PID 800 wrote to memory of 1588	800	EXCEL.EXE	cmd.exe
PID 800 wrote to memory of 1588	800	EXCEL.EXE	cmd.exe
PID 2280 wrote to memory of 4296	2280	cmd.exe	attrib.exe
PID 2280 wrote to memory of 4296	2280	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4296 attrib.exe

pid	process
4296	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\1b21355e9ed914871270fe883864fc9779b3bde3d437d05afe72b2b8acd83cf3.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:800

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:2280

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4296

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:2756

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:1588

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/800-138-0x00007FFDAAC10000-0x00007FFDAAC20000-memory.dmp

Filesize
64KB

Download
memory/800-144-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-134-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-135-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-136-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-137-0x00007FFDAAC10000-0x00007FFDAAC20000-memory.dmp

Filesize
64KB

Download
memory/800-133-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-147-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-132-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-146-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/800-145-0x00007FFDAD570000-0x00007FFDAD580000-memory.dmp

Filesize
64KB

Download
memory/1588-141-0x0000000000000000-mapping.dmp

Download
memory/2280-139-0x0000000000000000-mapping.dmp

Download
memory/2756-140-0x0000000000000000-mapping.dmp

Download
memory/4296-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads