dbad9e585e2fc8879233167325116f93ebcfb7a9dd91e77186f8630608c99edc

General

Target

catalog-225145695.xls
Size

367KB
MD5

405bab43c323b0b782035b1d323e7b80
SHA1

80101734e0564859e633bd8669abda8358297d4b
SHA256

4d956bbd0c66b921211e71c7e0eb920adcd49c9dc67ba16298b14fb15160a32f
SHA512

31abaedeab3d56f8470ea951ca07b5d6d1492eeee4d1708f05243ae6a1ed4816ec82601dec220b3353665ced69ddbc827d9e09c6ba88aad728efe001a3d3d13f

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	2872	908	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2252	908	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

908 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE
908	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 908 wrote to memory of 2872	908	EXCEL.EXE	rundll32.exe
PID 908 wrote to memory of 2872	908	EXCEL.EXE	rundll32.exe
PID 908 wrote to memory of 2252	908	EXCEL.EXE	rundll32.exe
PID 908 wrote to memory of 2252	908	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-225145695.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2872

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2252

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/908-114-0x00007FF786410000-0x00007FF7899C6000-memory.dmp

Filesize
53.7MB

Download
memory/908-115-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

Filesize
64KB

Download
memory/908-116-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

Filesize
64KB

Download
memory/908-117-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

Filesize
64KB

Download
memory/908-118-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

Filesize
64KB

Download
memory/908-121-0x00007FFD9F860000-0x00007FFD9F870000-memory.dmp

Filesize
64KB

Download
memory/908-122-0x00007FFDBFCB0000-0x00007FFDC0D9E000-memory.dmp

Filesize
16.9MB

Download
memory/908-123-0x0000025B87230000-0x0000025B89125000-memory.dmp

Filesize
31.0MB

Download
memory/2252-180-0x0000000000000000-mapping.dmp

Download
memory/2872-179-0x0000000000000000-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