8e8dfd661d58de326537f08f352d06a8620e050b762abb7933e5d0ce168faf09

General

Target

catalog-2084377151.xls
Size

367KB
MD5

2d352058f8cbf4051e69f621fdae8230
SHA1

83c5531766840df31b6e16cf0a65b8f605d91f5a
SHA256

15225cdd778028cbe3a4bcf59fb0134c523f8a4b622e6433a7386be10f41ffeb
SHA512

d3c43b07247ffaeb34f36b6a84e32e0dac6779ac9e3a4cfcb57e36c5acd4ba164ab3496e725f9a37e75eae47c6d4ee57f1683030ac48b63908d7f987d50c671f

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	492	2996	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	636	2996	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

2996 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

2996 EXCEL.EXE
2996 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE
2996	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2996 wrote to memory of 492	2996	EXCEL.EXE	rundll32.exe
PID 2996 wrote to memory of 492	2996	EXCEL.EXE	rundll32.exe
PID 2996 wrote to memory of 636	2996	EXCEL.EXE	rundll32.exe
PID 2996 wrote to memory of 636	2996	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-2084377151.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2996

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:492

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:636

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

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Downloads

memory/492-179-0x0000000000000000-mapping.dmp

Download
memory/636-180-0x0000000000000000-mapping.dmp

Download
memory/2996-114-0x00007FF783DF0000-0x00007FF7873A6000-memory.dmp

Filesize
53.7MB

Download
memory/2996-115-0x00007FFFBE230000-0x00007FFFBE240000-memory.dmp

Filesize
64KB

Download
memory/2996-116-0x00007FFFBE230000-0x00007FFFBE240000-memory.dmp

Filesize
64KB

Download
memory/2996-117-0x00007FFFBE230000-0x00007FFFBE240000-memory.dmp

Filesize
64KB

Download
memory/2996-118-0x00007FFFBE230000-0x00007FFFBE240000-memory.dmp

Filesize
64KB

Download
memory/2996-121-0x00007FFFBE230000-0x00007FFFBE240000-memory.dmp

Filesize
64KB

Download
memory/2996-122-0x00007FFFDE950000-0x00007FFFDFA3E000-memory.dmp

Filesize
16.9MB

Download
memory/2996-123-0x00007FFFDCA50000-0x00007FFFDE945000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads