93cbac8660d1d5fbf3035e133ac58444d259d7ffd82924d07a625b9a0fc2588f

General

Target

catalog-2053425544.xls
Size

367KB
MD5

a58070871aa8faa0b298d9ac99a9c7e3
SHA1

fc4dd9556d02fe6df6a441ff22c8e9011ae640ff
SHA256

971e709a346a79f43ba5956835cd685542eba41ba8adaa0171e36b2f73c6b0d5
SHA512

9e7a7dcc2b3b0bc7ad121b23bc2a760863caa8e3dad9413e7cfc0f615250961c1d22a838ea27b34e5b5c5184b83de006c9c76d5633ccbd7149810ece7574fc71

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	2628	3724	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1596	3724	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

3724 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3724 wrote to memory of 2628	3724	EXCEL.EXE	rundll32.exe
PID 3724 wrote to memory of 2628	3724	EXCEL.EXE	rundll32.exe
PID 3724 wrote to memory of 1596	3724	EXCEL.EXE	rundll32.exe
PID 3724 wrote to memory of 1596	3724	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-2053425544.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3724

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2628

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1596

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

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Downloads

memory/1596-180-0x0000000000000000-mapping.dmp

Download
memory/2628-179-0x0000000000000000-mapping.dmp

Download
memory/3724-114-0x00007FF7EDC60000-0x00007FF7F1216000-memory.dmp

Filesize
53.7MB

Download
memory/3724-115-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

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memory/3724-116-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-117-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-118-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-121-0x00007FFA44E50000-0x00007FFA45F3E000-memory.dmp

Filesize
16.9MB

Download
memory/3724-122-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-123-0x000002656EAC0000-0x00000265709B5000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads