516816611c1bfd046dd22367461542f760a14a1fbe06422f1ca5ca9580fb120d

General

Target

catalog-2098741452.xls
Size

367KB
MD5

a55a762fd05ba03e1645d621935fb342
SHA1

fec20b078a586b75e32b3cd07876e8a83422813f
SHA256

db737401e289eaad9afb22f1e7808d8facaf50d3e297f134143fae9fa28f7eba
SHA512

c924c19992d74f5079fd2a5380b0471a81702f7fedf53dee74c3e855e2df4400a845feff86f6b386cc3f63534e5de4786b1ceb7428e839526a84c54cf5fa2bc6

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	1356	3172	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2644	3172	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

3172 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE
3172	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3172 wrote to memory of 1356	3172	EXCEL.EXE	rundll32.exe
PID 3172 wrote to memory of 1356	3172	EXCEL.EXE	rundll32.exe
PID 3172 wrote to memory of 2644	3172	EXCEL.EXE	rundll32.exe
PID 3172 wrote to memory of 2644	3172	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-2098741452.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3172

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1356

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2644

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/1356-179-0x0000000000000000-mapping.dmp

Download
memory/2644-180-0x0000000000000000-mapping.dmp

Download
memory/3172-114-0x00007FF747CD0000-0x00007FF74B286000-memory.dmp

Filesize
53.7MB

Download
memory/3172-115-0x00007FF9B87B0000-0x00007FF9B87C0000-memory.dmp

Filesize
64KB

Download
memory/3172-116-0x00007FF9B87B0000-0x00007FF9B87C0000-memory.dmp

Filesize
64KB

Download
memory/3172-117-0x00007FF9B87B0000-0x00007FF9B87C0000-memory.dmp

Filesize
64KB

Download
memory/3172-118-0x00007FF9B87B0000-0x00007FF9B87C0000-memory.dmp

Filesize
64KB

Download
memory/3172-121-0x00007FF9D93B0000-0x00007FF9DA49E000-memory.dmp

Filesize
16.9MB

Download
memory/3172-122-0x00007FF9B87B0000-0x00007FF9B87C0000-memory.dmp

Filesize
64KB

Download
memory/3172-123-0x00007FF9D7400000-0x00007FF9D92F5000-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