5492fc63299b0e583cab81e581b018cd8b5f9617553facf1b8550bbdb2296d83

General

Target

catalog-1974084027.xls
Size

367KB
MD5

1092548fcf25281fc11de9003bedead1
SHA1

84c232353576980642cabfabc6d1a66de9628a7b
SHA256

218b7c08823afb945166d0d13afd4703bb81e1f61bf530bb41a06f266f0a427f
SHA512

03c351e8f48f4f495b97808f0cebcdcc09d6bae06ccbd7f3041fe91f306aa12f11771c0df4fa34a602004082c06185114660ab1eb24087207661f18518a6546a

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	192	3952	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1544	3952	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\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

3952 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE
3952	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3952 wrote to memory of 192	3952	EXCEL.EXE	rundll32.exe
PID 3952 wrote to memory of 192	3952	EXCEL.EXE	rundll32.exe
PID 3952 wrote to memory of 1544	3952	EXCEL.EXE	rundll32.exe
PID 3952 wrote to memory of 1544	3952	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-1974084027.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3952

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:192

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1544

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

Loading Replay Monitor...

Downloads

memory/192-179-0x0000000000000000-mapping.dmp

Download
memory/1544-180-0x0000000000000000-mapping.dmp

Download
memory/3952-114-0x00007FF77DB50000-0x00007FF781106000-memory.dmp

Filesize
53.7MB

Download
memory/3952-115-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3952-117-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3952-116-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3952-118-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3952-122-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3952-121-0x00007FFA290C0000-0x00007FFA2A1AE000-memory.dmp

Filesize
16.9MB

Download
memory/3952-123-0x00007FFA26FA0000-0x00007FFA28E95000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads