4bc34873de42eea69613bd989661b9c95641bc183de38cdc3a9388225e89fbd1

General

Target

4bc34873de42eea69613bd989661b9c95641bc183de38cdc3a9388225e89fbd1.xls
Size

122KB
MD5

ce141536804b139b30f7e8f03418e408
SHA1

4f9871895870f106d087ba89b949c822826dd0a9
SHA256

4bc34873de42eea69613bd989661b9c95641bc183de38cdc3a9388225e89fbd1
SHA512

c3836da802c3ad24857b4dc484b3c8d7aa691da2756e19fa5323361fa0d2f292693de427ab909b13c1c02a74f33f575630937dd3369b5db1910ab46eb76cb0f6
SSDEEP

1536:F00004Rh5FgOQskfdJibLT6JVbrzQ7b4YTkQx23q43TbBcJtXw88yMOW+:ggOQsgJVbrzQ7XTk3Z3TbKJtXwmMOW+

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	380	4772	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1528	4772	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1836	4772	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

4772 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE
4772	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4772 wrote to memory of 380	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 380	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 1528	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 1528	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 1836	4772	EXCEL.EXE	cmd.exe
PID 4772 wrote to memory of 1836	4772	EXCEL.EXE	cmd.exe
PID 380 wrote to memory of 5080	380	cmd.exe	attrib.exe
PID 380 wrote to memory of 5080	380	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

5080 attrib.exe

pid	process
5080	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\4bc34873de42eea69613bd989661b9c95641bc183de38cdc3a9388225e89fbd1.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4772

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:380

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:5080

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:1528

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:1836

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/380-140-0x0000000000000000-mapping.dmp

Download
memory/1528-141-0x0000000000000000-mapping.dmp

Download
memory/1836-142-0x0000000000000000-mapping.dmp

Download
memory/4772-136-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-134-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-137-0x00007FFAC0240000-0x00007FFAC0250000-memory.dmp

Filesize
64KB

Download
memory/4772-138-0x00007FFAC0240000-0x00007FFAC0250000-memory.dmp

Filesize
64KB

Download
memory/4772-139-0x000001989E4F8000-0x000001989E4FA000-memory.dmp

Filesize
8KB

Download
memory/4772-135-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-133-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-132-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-149-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-144-0x000001989E4F8000-0x000001989E4FA000-memory.dmp

Filesize
8KB

Download
memory/4772-146-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-147-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/4772-148-0x00007FFAC2970000-0x00007FFAC2980000-memory.dmp

Filesize
64KB

Download
memory/5080-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads