17ac448075a0012cfb3256531714208d8445e31cd928a5e2730d5020ad589012

General

Target

catalog-200342936.xls
Size

367KB
MD5

9a463d361231979b3af1aaa5bf3bd984
SHA1

07fc4a32d845587574125b4e9c1197063e0164dd
SHA256

ab57c5a5efcfc2c6db428c189123459f8cd2cd44ed969121f01a6553c21fe593
SHA512

544e5b1a8be1daa94d3b685536138f6f4c4f8aeb46e4603be52b9b8e4bc32f462acd3e43d737ef461789d42dddd1efa0f84bdf6c425904c2d1a1685d42fcd285

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	1492	744	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2204	744	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

744 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE
744	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 744 wrote to memory of 1492	744	EXCEL.EXE	rundll32.exe
PID 744 wrote to memory of 1492	744	EXCEL.EXE	rundll32.exe
PID 744 wrote to memory of 2204	744	EXCEL.EXE	rundll32.exe
PID 744 wrote to memory of 2204	744	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-200342936.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1492

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2204

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/744-114-0x00007FF704AE0000-0x00007FF708096000-memory.dmp

Filesize
53.7MB

Download
memory/744-115-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/744-116-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/744-117-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/744-118-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/744-121-0x00007FFDF7C30000-0x00007FFDF8D1E000-memory.dmp

Filesize
16.9MB

Download
memory/744-122-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/744-123-0x0000023252A30000-0x0000023254925000-memory.dmp

Filesize
31.0MB

Download
memory/1492-179-0x0000000000000000-mapping.dmp

Download
memory/2204-180-0x0000000000000000-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