c1f64b4f084b37a231990814c431e7d4eaad3e2cceb5a38d62f4f9f79bcd9ffe

General

Target

catalog-2073106428.xls
Size

367KB
MD5

5bef2a4476c22f91d4b77802cbbd66dc
SHA1

abee3e6b5e3a1b8c0d120387a11880f7863077c9
SHA256

5aa78f2233eedc785ad90718ab50f74f23e893ff3523137b6bde7fea883280e1
SHA512

439612d297e1c7f0fb56c43e80c3d260f316fa17b3d9fbd8cf3c09f5a2330d450208935747be6d814345db47c1c752769e182db2172d08e988fc13ca94ddf81c

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	3656	812	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	696	812	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

812 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE
812	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 812 wrote to memory of 3656	812	EXCEL.EXE	rundll32.exe
PID 812 wrote to memory of 3656	812	EXCEL.EXE	rundll32.exe
PID 812 wrote to memory of 696	812	EXCEL.EXE	rundll32.exe
PID 812 wrote to memory of 696	812	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-2073106428.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:812

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3656

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:696

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/696-180-0x0000000000000000-mapping.dmp

Download
memory/812-114-0x00007FF737B30000-0x00007FF73B0E6000-memory.dmp

Filesize
53.7MB

Download
memory/812-115-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/812-116-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/812-117-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/812-118-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/812-122-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/812-121-0x00007FFA7A200000-0x00007FFA7B2EE000-memory.dmp

Filesize
16.9MB

Download
memory/812-123-0x0000024E75980000-0x0000024E77875000-memory.dmp

Filesize
31.0MB

Download
memory/3656-179-0x0000000000000000-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