65bed6345988384a572ab7c53ce64bf0efd527884666a273506b7c06e564e834

General

Target

catalog-2082234753.xls
Size

367KB
MD5

377979b8ec401411aff27b271837a30c
SHA1

19da1a5260761083698055a6151dc9af8463c25f
SHA256

9f19557269565477a97fb8095c3449c3e9b61bf75a8ea5f67a445dab68854392
SHA512

7f890705b6cdad0e9ef5dfe3df06d4ca78de2f48c35efa7607926c93dc60bf8563b4a94e1836276bc76ad77bffee85a7eddd26579c9404510d056b1855dbfa0c

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	184	3952	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3148	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 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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3952 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

3952 EXCEL.EXE
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 184	3952	EXCEL.EXE	rundll32.exe
PID 3952 wrote to memory of 184	3952	EXCEL.EXE	rundll32.exe
PID 3952 wrote to memory of 3148	3952	EXCEL.EXE	rundll32.exe
PID 3952 wrote to memory of 3148	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-2082234753.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:3952

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:184

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3148

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/184-179-0x0000000000000000-mapping.dmp

Download
memory/3148-180-0x0000000000000000-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/3952-116-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3952-117-0x00007FFA08250000-0x00007FFA08260000-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/3952-121-0x00007FFA28EB0000-0x00007FFA29F9E000-memory.dmp

Filesize
16.9MB

Download
memory/3952-123-0x00007FFA26EF0000-0x00007FFA28DE5000-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