b3031ff3fce6494914e3349bf3baa4f4cf10d2ef43af0cb845f3346e26119027

General

Target

b3031ff3fce6494914e3349bf3baa4f4cf10d2ef43af0cb845f3346e26119027.xls
Size

92KB
MD5

1b308dad66fe8bed16702ed86488b6dc
SHA1

eeaa65009294e640485fccf06a52f73ab387fab5
SHA256

b3031ff3fce6494914e3349bf3baa4f4cf10d2ef43af0cb845f3346e26119027
SHA512

c69a36179cc32351762d893daf13e9d098111db1e6d57135fe959f812c9dba1ef2ee1aa059228d5b2f89036d490047a0e6bd91b29874b622c2176af1367e7eb8
SSDEEP

1536:4OOOO67Dy1SNmVnLziCdymRxoiKTMEO3Qn6v7yZmspH7+7alMiEZClsPI4ukoRWJ:a3Qn6v7yZmspH7+7alMisPI4ukoRWGN+

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	212	1084	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	116	1084	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2592	1084	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\ED175E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1084 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\ED175E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE
1084	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1084 wrote to memory of 212	1084	EXCEL.EXE	cmd.exe
PID 1084 wrote to memory of 212	1084	EXCEL.EXE	cmd.exe
PID 1084 wrote to memory of 116	1084	EXCEL.EXE	cmd.exe
PID 1084 wrote to memory of 116	1084	EXCEL.EXE	cmd.exe
PID 1084 wrote to memory of 2592	1084	EXCEL.EXE	cmd.exe
PID 1084 wrote to memory of 2592	1084	EXCEL.EXE	cmd.exe
PID 212 wrote to memory of 3824	212	cmd.exe	attrib.exe
PID 212 wrote to memory of 3824	212	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

3824 attrib.exe

pid	process
3824	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\b3031ff3fce6494914e3349bf3baa4f4cf10d2ef43af0cb845f3346e26119027.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:1084

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:212

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:3824

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:116

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:2592

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/116-140-0x0000000000000000-mapping.dmp

Download
memory/212-139-0x0000000000000000-mapping.dmp

Download
memory/1084-144-0x00000231A38C7000-0x00000231A38C9000-memory.dmp

Filesize
8KB

Download
memory/1084-133-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-136-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-137-0x00007FFBF3960000-0x00007FFBF3970000-memory.dmp

Filesize
64KB

Download
memory/1084-138-0x00007FFBF3960000-0x00007FFBF3970000-memory.dmp

Filesize
64KB

Download
memory/1084-134-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-149-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-135-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-148-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-143-0x00000231A38C7000-0x00000231A38C9000-memory.dmp

Filesize
8KB

Download
memory/1084-132-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-146-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/1084-147-0x00007FFBF61B0000-0x00007FFBF61C0000-memory.dmp

Filesize
64KB

Download
memory/2592-141-0x0000000000000000-mapping.dmp

Download
memory/3824-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads