37f0eab40c2f51c847929eaa258dc86cb530fc5d0413891b78361151055a258a

General

Target

catalog-219675823.xls
Size

367KB
MD5

8608d0f96148b9760221c347aaa7475c
SHA1

4b4dd4b410c40f219cf23cc907a2b4b74a0ce921
SHA256

e50952c7bfd437c63950e6b7d1bbc5af0eedf26b266d9d544ea14e7035878c66
SHA512

f83b02b0e2c247419c6cfa71cfbc40e8ba331d0f9053e47c51ed118bd17b707715f3d5b4955438b2848921bb20cdce01a212abb6c11a7e5d72fa10434249c2fc

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	1008	3680	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2628	3680	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\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

3680 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE
3680	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3680 wrote to memory of 1008	3680	EXCEL.EXE	rundll32.exe
PID 3680 wrote to memory of 1008	3680	EXCEL.EXE	rundll32.exe
PID 3680 wrote to memory of 2628	3680	EXCEL.EXE	rundll32.exe
PID 3680 wrote to memory of 2628	3680	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-219675823.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3680

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1008

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2628

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/1008-179-0x0000000000000000-mapping.dmp

Download
memory/2628-180-0x0000000000000000-mapping.dmp

Download
memory/3680-114-0x00007FF708AA0000-0x00007FF70C056000-memory.dmp

Filesize
53.7MB

Download
memory/3680-115-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-116-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-118-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-117-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-122-0x00007FF85A170000-0x00007FF85A180000-memory.dmp

Filesize
64KB

Download
memory/3680-121-0x00007FF87ACF0000-0x00007FF87BDDE000-memory.dmp

Filesize
16.9MB

Download
memory/3680-123-0x00007FF878D40000-0x00007FF87AC35000-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