980643fb9054b3e222928f5a5fcfd53c2b1319ae12499f8ceb01833dc950d402

General

Target

catalog-2039169496.xls
Size

367KB
MD5

2bda1337c502989c23fc8c75ada2c271
SHA1

0a5930571088ad8f8ab7a51a5c057fc306b3fc53
SHA256

39199c98bfedb5102657cfc5a6bebc7a82b26f9fd52b4e062e1cbf031bbb6535
SHA512

ef36f008074fa8177e8965d3b660d21945c7970652a91afd81dadf468a4af94ad41d69af597316849b4906eba8e57ccc8ea088790513dba2dfc4655e4d6ac6ae

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	1272	4448	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1424	4448	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

4448 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4448 EXCEL.EXE
4448 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE
4448	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4448 wrote to memory of 1272	4448	EXCEL.EXE	rundll32.exe
PID 4448 wrote to memory of 1272	4448	EXCEL.EXE	rundll32.exe
PID 4448 wrote to memory of 1424	4448	EXCEL.EXE	rundll32.exe
PID 4448 wrote to memory of 1424	4448	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-2039169496.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:4448

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1272

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1424

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/1272-179-0x0000000000000000-mapping.dmp

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memory/1424-180-0x0000000000000000-mapping.dmp

Download
memory/4448-114-0x00007FF67F260000-0x00007FF682816000-memory.dmp

Filesize
53.7MB

Download
memory/4448-115-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4448-116-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4448-117-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4448-118-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4448-122-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4448-121-0x00007FF9D41C0000-0x00007FF9D52AE000-memory.dmp

Filesize
16.9MB

Download
memory/4448-123-0x000001B6A29D0000-0x000001B6A48C5000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads