8daec55333b8697879b04188bd206839a7302969e245bec9ddca6860e4f9f51f

General

Target

catalog-2035363419.xls
Size

367KB
MD5

b1d4572d1d6bd8e548d6a4115d960021
SHA1

692f007e17f7a8c2270be4df514fee96341e77f4
SHA256

0efa51ef8288e94835b5d2bc3b89663aa913a07c565db2a3c51b80adbdadfb40
SHA512

8c68fe9065bb4149000f3b2354257ff6993b7d417960d366805b72a17fe36e4bb8262b51ccebea20656a3ef9b4206f98eef79408a21b7522071ed373eaee566d

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	576	1844	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3428	1844	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

1844 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE
1844	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1844 wrote to memory of 576	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 576	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 3428	1844	EXCEL.EXE	rundll32.exe
PID 1844 wrote to memory of 3428	1844	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-2035363419.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1844

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:576

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3428

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/576-179-0x0000000000000000-mapping.dmp

Download
memory/1844-114-0x00007FF74C430000-0x00007FF74F9E6000-memory.dmp

Filesize
53.7MB

Download
memory/1844-115-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/1844-116-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/1844-117-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/1844-118-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/1844-122-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/1844-121-0x00007FF87AB20000-0x00007FF87BC0E000-memory.dmp

Filesize
16.9MB

Download
memory/1844-123-0x00007FF878C20000-0x00007FF87AB15000-memory.dmp

Filesize
31.0MB

Download
memory/3428-180-0x0000000000000000-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