81d9d4d40c6f3cc82a3b4f61bca0324e76f75a416f2e2271db56b802b341468f

General

Target

catalog-2131836968.xls
Size

367KB
MD5

16751532b0208a9b159783dd9486c83f
SHA1

de9f4847c8eb9f0c5fb7f5c2d9e3d4904d44e62c
SHA256

538289db6e2c31428d6f7badd4b89e6f03249a460b410b06c3326183f14c5b3a
SHA512

3be76a98e279215668c24db0de60eab2c17baeeb1c52585141b79e25ec35d41faa0506548675971f2a3d84a4e0956ce6ad6478d464ce345fd1bc1540da475a4c

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	2132	644	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2540	644	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

644 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE
644	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 644 wrote to memory of 2132	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 2132	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 2540	644	EXCEL.EXE	rundll32.exe
PID 644 wrote to memory of 2540	644	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-2131836968.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:644

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2132

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2540

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/644-114-0x00007FF736BA0000-0x00007FF73A156000-memory.dmp

Filesize
53.7MB

Download
memory/644-115-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/644-116-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/644-117-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/644-118-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/644-119-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/644-122-0x00007FFA0EBD0000-0x00007FFA0FCBE000-memory.dmp

Filesize
16.9MB

Download
memory/644-123-0x00007FFA0CCD0000-0x00007FFA0EBC5000-memory.dmp

Filesize
31.0MB

Download
memory/2132-179-0x0000000000000000-mapping.dmp

Download
memory/2540-180-0x0000000000000000-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