00694c9ffa8ae592d4c72f3312591a32db50c897edc7ce9a98e13b75756586a3

General

Target

catalog-2043858833.xls
Size

367KB
MD5

ae337c088028668f0e2bff8cd4720611
SHA1

294e9a17d11705de3f7b6302b70326f4e6e6fa00
SHA256

3a2de618fccfc9d477a964e00221a4f05ef00097060928f42de14e6ae2a2f1d3
SHA512

adafd08029699da6f5d996b92a9830612c546c5045e331dcfd37267031f52d9837bb7f3ff1a13d0581ba8e279aaa71aafdfde0cc332a6e89c46cf9ec64733aab

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	2052	1040	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	700	1040	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

1040 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE
1040	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1040 wrote to memory of 2052	1040	EXCEL.EXE	rundll32.exe
PID 1040 wrote to memory of 2052	1040	EXCEL.EXE	rundll32.exe
PID 1040 wrote to memory of 700	1040	EXCEL.EXE	rundll32.exe
PID 1040 wrote to memory of 700	1040	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-2043858833.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1040

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2052

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:700

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/700-180-0x0000000000000000-mapping.dmp

Download
memory/1040-114-0x00007FF612D50000-0x00007FF616306000-memory.dmp

Filesize
53.7MB

Download
memory/1040-115-0x00007FFC3AEC0000-0x00007FFC3AED0000-memory.dmp

Filesize
64KB

Download
memory/1040-116-0x00007FFC3AEC0000-0x00007FFC3AED0000-memory.dmp

Filesize
64KB

Download
memory/1040-117-0x00007FFC3AEC0000-0x00007FFC3AED0000-memory.dmp

Filesize
64KB

Download
memory/1040-118-0x00007FFC3AEC0000-0x00007FFC3AED0000-memory.dmp

Filesize
64KB

Download
memory/1040-121-0x00007FFC3AEC0000-0x00007FFC3AED0000-memory.dmp

Filesize
64KB

Download
memory/1040-122-0x00007FFC5B5B0000-0x00007FFC5C69E000-memory.dmp

Filesize
16.9MB

Download
memory/1040-123-0x00007FFC596B0000-0x00007FFC5B5A5000-memory.dmp

Filesize
31.0MB

Download
memory/2052-179-0x0000000000000000-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