1db2cc076d0388ebd2a05f1409f44d3576bbddd3118d789b04c2181364c30c89

General

Target

catalog-2029944831.xls
Size

367KB
MD5

ae4a7a4a50621c31e771b589f800cfd7
SHA1

21020b2f44299266de362ae8817e08a6122e2c6b
SHA256

d426f9e1657aa8a09fa039fe9c144fbe5bcb1ce054d8e63c5f9d7a7cbcd74bce
SHA512

f80034fc0835c0b18e9f4d5926736471811bc8953702cc7554116e8168ff33c9a9346e2372f8fabef6d3ce5b331f779d5f532ddabf2f6a42920a71d2877e554c

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	3332	856	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3956	856	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

856 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE
856	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 856 wrote to memory of 3332	856	EXCEL.EXE	rundll32.exe
PID 856 wrote to memory of 3332	856	EXCEL.EXE	rundll32.exe
PID 856 wrote to memory of 3956	856	EXCEL.EXE	rundll32.exe
PID 856 wrote to memory of 3956	856	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-2029944831.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:856

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3332

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3956

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/856-114-0x00007FF7554B0000-0x00007FF758A66000-memory.dmp

Filesize
53.7MB

Download
memory/856-115-0x00007FF9DCDF0000-0x00007FF9DCE00000-memory.dmp

Filesize
64KB

Download
memory/856-116-0x00007FF9DCDF0000-0x00007FF9DCE00000-memory.dmp

Filesize
64KB

Download
memory/856-117-0x00007FF9DCDF0000-0x00007FF9DCE00000-memory.dmp

Filesize
64KB

Download
memory/856-118-0x00007FF9DCDF0000-0x00007FF9DCE00000-memory.dmp

Filesize
64KB

Download
memory/856-119-0x00007FF9DCDF0000-0x00007FF9DCE00000-memory.dmp

Filesize
64KB

Download
memory/856-122-0x00007FF9FD810000-0x00007FF9FE8FE000-memory.dmp

Filesize
16.9MB

Download
memory/856-123-0x00007FF9FB910000-0x00007FF9FD805000-memory.dmp

Filesize
31.0MB

Download
memory/3332-179-0x0000000000000000-mapping.dmp

Download
memory/3956-180-0x0000000000000000-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