b0ff15db4050171aeba103ce1e062aa036af3da1005ba2874ae968f05a9e3cd0

General

Target

catalog-2106884024.xls
Size

367KB
MD5

709c66ed686fb25a8f4bee76ec6f8a1a
SHA1

73920117cbd26cf3a5854d31a401a8843eaf8b78
SHA256

e8c554d96d79173f534a147c98a54a329eb7228b110b5dcae33cfc7ce02fd16e
SHA512

560376c50f62d585eac050610bba78c546c0fe625f6bdda253fc4fdb29adad277a78ecbc2104384ac71ec185ec0935dcb63d1651c4fef320df3a1a02f011d822

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	2604	4660	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2680	4660	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

4660 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE
4660	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4660 wrote to memory of 2604	4660	EXCEL.EXE	rundll32.exe
PID 4660 wrote to memory of 2604	4660	EXCEL.EXE	rundll32.exe
PID 4660 wrote to memory of 2680	4660	EXCEL.EXE	rundll32.exe
PID 4660 wrote to memory of 2680	4660	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-2106884024.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4660

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2604

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2680

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/2604-179-0x0000000000000000-mapping.dmp

Download
memory/2680-180-0x0000000000000000-mapping.dmp

Download
memory/4660-114-0x00007FF66A490000-0x00007FF66DA46000-memory.dmp

Filesize
53.7MB

Download
memory/4660-115-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4660-116-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4660-117-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4660-118-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4660-119-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4660-122-0x00007FFA58E30000-0x00007FFA59F1E000-memory.dmp

Filesize
16.9MB

Download
memory/4660-123-0x0000014605870000-0x0000014607765000-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