54b074a6de3405d1cebf4b2b2f566c50ecb5f2858b4ddbdf0ef7658239b157c9

General

Target

catalog-2000871263.xls
Size

367KB
MD5

24fc3c880d10eb1df2b31a5e312a56ca
SHA1

a000cd120bc081c5241ff1ae6a60e64bbc8c2bb1
SHA256

5db1edf69cb4b784f2f817d2acb77289415ee36bd03334507d10fe5145496673
SHA512

575a140e85cad11d0a606ebc69111ce3d22af505afe5d8d86793eda012856658d443e0ec3f7baf692fd1cd5e2c2bc3abc987aec7ba29df36b76e69c715e41eaa

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	3956	900	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3936	900	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

900 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

900 EXCEL.EXE
900 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE
900	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 900 wrote to memory of 3956	900	EXCEL.EXE	rundll32.exe
PID 900 wrote to memory of 3956	900	EXCEL.EXE	rundll32.exe
PID 900 wrote to memory of 3936	900	EXCEL.EXE	rundll32.exe
PID 900 wrote to memory of 3936	900	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-2000871263.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:900

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3956

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3936

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/900-114-0x00007FF7399C0000-0x00007FF73CF76000-memory.dmp

Filesize
53.7MB

Download
memory/900-115-0x00007FFAAC630000-0x00007FFAAC640000-memory.dmp

Filesize
64KB

Download
memory/900-116-0x00007FFAAC630000-0x00007FFAAC640000-memory.dmp

Filesize
64KB

Download
memory/900-118-0x00007FFAAC630000-0x00007FFAAC640000-memory.dmp

Filesize
64KB

Download
memory/900-117-0x00007FFAAC630000-0x00007FFAAC640000-memory.dmp

Filesize
64KB

Download
memory/900-122-0x00007FFAAC630000-0x00007FFAAC640000-memory.dmp

Filesize
64KB

Download
memory/900-121-0x00007FFACCD80000-0x00007FFACDE6E000-memory.dmp

Filesize
16.9MB

Download
memory/900-123-0x00007FFACAE80000-0x00007FFACCD75000-memory.dmp

Filesize
31.0MB

Download
memory/3936-180-0x0000000000000000-mapping.dmp

Download
memory/3956-179-0x0000000000000000-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