60d9c70f1bb1c1f428bb6fb14a86ed07fbcb6d228d4628a1eb600c9236d93760

General

Target

catalog-2013516395.xls
Size

367KB
MD5

10fa72ec3f271607f50229436be4aff0
SHA1

f11dd7f03f0558bd8e94116c44c1407400b583e9
SHA256

4245ed2a0f5e4f3f8a5f5c6bd0ddea695c3fa2830be20d30627460564b3ed0f2
SHA512

e6bf973cb7bf245fb641bd458f0aa286efb3888d9b847e255d53e96bd4438179bc1915561b2f7842f3ea3351550b056af65217c47843e077c9c76621686b0955

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exerundll32.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	2152	3944	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	744	3944	rundll32.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

3944 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE
3944	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3944 wrote to memory of 2152	3944	EXCEL.EXE	rundll32.exe
PID 3944 wrote to memory of 2152	3944	EXCEL.EXE	rundll32.exe
PID 3944 wrote to memory of 744	3944	EXCEL.EXE	rundll32.exe
PID 3944 wrote to memory of 744	3944	EXCEL.EXE	rundll32.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\catalog-2013516395.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3944

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2152

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/744-180-0x0000000000000000-mapping.dmp

Download
memory/2152-179-0x0000000000000000-mapping.dmp

Download
memory/3944-114-0x00007FF793FB0000-0x00007FF797566000-memory.dmp

Filesize
53.7MB

Download
memory/3944-115-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-116-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-117-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-118-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-119-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3944-122-0x00007FFDC3030000-0x00007FFDC411E000-memory.dmp

Filesize
16.9MB

Download
memory/3944-123-0x00007FFDC1130000-0x00007FFDC3025000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads