f34f9ba0e580ff3d1c82f4f194086dbcf69a6bfe28b0092d40f7cd045fe3df0a

General

Target

catalog-214102172.xls
Size

367KB
MD5

17400c8228e497eca5360a94d71fb694
SHA1

781bb1feaf35179c86e650b0d3213f31129077f6
SHA256

21f1323654996ca118b8548fdffdeb85bf4d4f73f072cad17552a9016f86a335
SHA512

be67c9b788c6a9f7b3946182bd309d1750c390caf3123bd669e9bfa76c81ad4ada0f5f02852864da9f4dc791669877b5274d07c22ed5ac44123de8af79ed760e

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	1524	3892	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2116	3892	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

3892 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE
3892	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3892 wrote to memory of 1524	3892	EXCEL.EXE	rundll32.exe
PID 3892 wrote to memory of 1524	3892	EXCEL.EXE	rundll32.exe
PID 3892 wrote to memory of 2116	3892	EXCEL.EXE	rundll32.exe
PID 3892 wrote to memory of 2116	3892	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-214102172.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3892

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1524

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2116

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/1524-179-0x0000000000000000-mapping.dmp

Download
memory/2116-180-0x0000000000000000-mapping.dmp

Download
memory/3892-114-0x00007FF716CF0000-0x00007FF71A2A6000-memory.dmp

Filesize
53.7MB

Download
memory/3892-115-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3892-116-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3892-117-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3892-118-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3892-122-0x00007FFDF5C60000-0x00007FFDF5C70000-memory.dmp

Filesize
64KB

Download
memory/3892-121-0x00007FFE16050000-0x00007FFE1713E000-memory.dmp

Filesize
16.9MB

Download
memory/3892-123-0x00000265FDA60000-0x00000265FF955000-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