b7ac5bf81967d408a751c717509c98bc9773d697b9b2a832971b828a7927abf6

General

Target

catalog-246234812.xls
Size

367KB
MD5

961bd25ec4aeb578ad535a7d9721de96
SHA1

5bac3d561e2f009cb071a66e2fff96f143d98cf0
SHA256

7906a1c0e8e1160ee05b7d76739b56c824ad94b6ea62649479d80150381d8b06
SHA512

3c0479c5dfff784d17207f1058de0dbde8b99f48c6f5ea99b42cb5bd23f743dd8c6e971e29a7076047a4b7a947b439adcf2841c5b809fd89f1c8edd6cde0ed87

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	3032	672	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3852	672	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

672 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 672 wrote to memory of 3032	672	EXCEL.EXE	rundll32.exe
PID 672 wrote to memory of 3032	672	EXCEL.EXE	rundll32.exe
PID 672 wrote to memory of 3852	672	EXCEL.EXE	rundll32.exe
PID 672 wrote to memory of 3852	672	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-246234812.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:672

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3032

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3852

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/672-114-0x00007FF74E7D0000-0x00007FF751D86000-memory.dmp

Filesize
53.7MB

Download
memory/672-115-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-117-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-116-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-118-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-121-0x00007FF8CD7B0000-0x00007FF8CE89E000-memory.dmp

Filesize
16.9MB

Download
memory/672-122-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-123-0x00007FF8CB8B0000-0x00007FF8CD7A5000-memory.dmp

Filesize
31.0MB

Download
memory/3032-179-0x0000000000000000-mapping.dmp

Download
memory/3852-180-0x0000000000000000-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