92a9542e087759f4f91e5edc533482737f0a313f4f0096caa206723b1d4d6a37

General

Target

catalog-245119820.xls
Size

367KB
MD5

aea301b2ebf0c004544b95bc1b6923aa
SHA1

1b6e10c048f10e39def380ade17b72f75c39ffcf
SHA256

54a404cfb672af7d26ceaf47591553eed2e88bf0db29c40500b9f6de4a54d2fa
SHA512

ebe4ef7e0f6ed3c80e7a338ec209fd63583cb3c8739b4af00ef64fc8ae0f9ccce99053c0e125e1becdd356feb1839dd9d84db5b7cc08a15bc3637dc3cf1f4050

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	4012	3668	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1120	3668	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

3668 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE
3668	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3668 wrote to memory of 4012	3668	EXCEL.EXE	rundll32.exe
PID 3668 wrote to memory of 4012	3668	EXCEL.EXE	rundll32.exe
PID 3668 wrote to memory of 1120	3668	EXCEL.EXE	rundll32.exe
PID 3668 wrote to memory of 1120	3668	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-245119820.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3668

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4012

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1120

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/1120-180-0x0000000000000000-mapping.dmp

Download
memory/3668-114-0x00007FF646040000-0x00007FF6495F6000-memory.dmp

Filesize
53.7MB

Download
memory/3668-115-0x00007FFD35790000-0x00007FFD357A0000-memory.dmp

Filesize
64KB

Download
memory/3668-116-0x00007FFD35790000-0x00007FFD357A0000-memory.dmp

Filesize
64KB

Download
memory/3668-117-0x00007FFD35790000-0x00007FFD357A0000-memory.dmp

Filesize
64KB

Download
memory/3668-118-0x00007FFD35790000-0x00007FFD357A0000-memory.dmp

Filesize
64KB

Download
memory/3668-121-0x00007FFD35790000-0x00007FFD357A0000-memory.dmp

Filesize
64KB

Download
memory/3668-122-0x00007FFD560A0000-0x00007FFD5718E000-memory.dmp

Filesize
16.9MB

Download
memory/3668-123-0x00007FFD540E0000-0x00007FFD55FD5000-memory.dmp

Filesize
31.0MB

Download
memory/4012-179-0x0000000000000000-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