2cc8487e2bddce36594cb5353e9b62ee34567d3b10421e5b6f1506412b1dcb24

General

Target

catalog-304472226.xls
Size

367KB
MD5

a2ae007b310460d9aa2ad66b4004a68f
SHA1

6f755785a20ab943b6e6534471c9af0aec8c3227
SHA256

90ecfdcdc3b8d4fd6f352b6cb0072842b9989803fa13fd95b2d53a280c8a112a
SHA512

db5a050fac0b005c97a2a6e846873a5b78965c0078d67516a5bd2596ffac4a389598bfa3281792752702d8cca519fb3134c7f1a13dd4238fdc3efba46961be37

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	1468	3984	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3948	3984	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

3984 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3984 wrote to memory of 1468	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 1468	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 3948	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 3948	3984	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-304472226.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3984

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1468

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3948

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/1468-179-0x0000000000000000-mapping.dmp

Download
memory/3948-180-0x0000000000000000-mapping.dmp

Download
memory/3984-114-0x00007FF6A8520000-0x00007FF6ABAD6000-memory.dmp

Filesize
53.7MB

Download
memory/3984-115-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-116-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-117-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-118-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-122-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-121-0x00007FF845880000-0x00007FF84696E000-memory.dmp

Filesize
16.9MB

Download
memory/3984-123-0x00007FF8438C0000-0x00007FF8457B5000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads