c489ca2d4d4e386906369a56af1e447057dcf70fb9add7d7658e870e83bbf668

General

Target

3394d592ddc92a96cf78232700f4f2a4.xls
Size

322KB
MD5

3394d592ddc92a96cf78232700f4f2a4
SHA1

433b979a3d98838d4079aa9ba065c8b5d2849c92
SHA256

c489ca2d4d4e386906369a56af1e447057dcf70fb9add7d7658e870e83bbf668
SHA512

3cff2a520e4e857e10d440d7c91a873def68c28f9f07c52e45539a07aa545273220b6d596f42acf8d2edf4c63f8b9d4aa76e60055b4a05db970280f822e6f22f
SSDEEP

6144:CxEtjPOtioVjDGUU1qfDlavx+Xxz1mR9gni5MGorW1yX5A1kDO/5yT7RS9vFbJMW:YmG

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	3772	1368	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3540	1368	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4264	1368	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\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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\51D75E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1368 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\51D75E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE
1368	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1368 wrote to memory of 4104	1368	EXCEL.EXE	splwow64.exe
PID 1368 wrote to memory of 4104	1368	EXCEL.EXE	splwow64.exe
PID 1368 wrote to memory of 3772	1368	EXCEL.EXE	cmd.exe
PID 1368 wrote to memory of 3772	1368	EXCEL.EXE	cmd.exe
PID 1368 wrote to memory of 3540	1368	EXCEL.EXE	cmd.exe
PID 1368 wrote to memory of 3540	1368	EXCEL.EXE	cmd.exe
PID 1368 wrote to memory of 4264	1368	EXCEL.EXE	cmd.exe
PID 1368 wrote to memory of 4264	1368	EXCEL.EXE	cmd.exe
PID 3772 wrote to memory of 1336	3772	cmd.exe	attrib.exe
PID 3772 wrote to memory of 1336	3772	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1336 attrib.exe

pid	process
1336	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\3394d592ddc92a96cf78232700f4f2a4.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:1368

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:4104

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:3772

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1336

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:3540

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:4264

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:720

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/1336-144-0x0000000000000000-mapping.dmp

Download
memory/1368-136-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-147-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-135-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-132-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-149-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-138-0x00007FFB01E50000-0x00007FFB01E60000-memory.dmp

Filesize
64KB

Download
memory/1368-134-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-148-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-137-0x00007FFB01E50000-0x00007FFB01E60000-memory.dmp

Filesize
64KB

Download
memory/1368-146-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/1368-143-0x000001CC006AB000-0x000001CC006AD000-memory.dmp

Filesize
8KB

Download
memory/1368-133-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/3540-141-0x0000000000000000-mapping.dmp

Download
memory/3772-140-0x0000000000000000-mapping.dmp

Download
memory/4104-139-0x0000000000000000-mapping.dmp

Download
memory/4264-142-0x0000000000000000-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