8ca364ed7098ed2237f9f888352f0253a2aa7c79eb8372210bc9484d0e17a9b4

General

Target

catalog-2034469038.xls
Size

367KB
MD5

8f39b777bbe0f2eb8820d03771b36499
SHA1

38b041907c0678b88b1077996219f77d8ed69c1e
SHA256

6a25a246beaf052796432b25ef9b1589930d867caa49ed6772b73c3b3cc26c52
SHA512

65483f338c127b7703912d284d0aa70f6392fb9824c92c6657abeae12f9623fd9bb464f12f053d883f6189cfb884cf895e53044059084d4a9820fa38147c535c

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	2384	2116	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2624	2116	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

2116 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE
2116	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2116 wrote to memory of 2384	2116	EXCEL.EXE	rundll32.exe
PID 2116 wrote to memory of 2384	2116	EXCEL.EXE	rundll32.exe
PID 2116 wrote to memory of 2624	2116	EXCEL.EXE	rundll32.exe
PID 2116 wrote to memory of 2624	2116	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-2034469038.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2116

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2384

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2624

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/2116-114-0x00007FF668F00000-0x00007FF66C4B6000-memory.dmp

Filesize
53.7MB

Download
memory/2116-115-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-116-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-117-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-118-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-119-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2116-122-0x00007FF859140000-0x00007FF85A22E000-memory.dmp

Filesize
16.9MB

Download
memory/2116-123-0x0000016496730000-0x0000016498625000-memory.dmp

Filesize
31.0MB

Download
memory/2384-179-0x0000000000000000-mapping.dmp

Download
memory/2624-180-0x0000000000000000-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