17c3baf17d9554c9a4b2b97531a543e2b85c8e610e94166aff92b8a379ff02b9

General

Target

catalog-268659284.xls
Size

367KB
MD5

5f99884ea5bf05be70712229549b6fd7
SHA1

6e83b69f00255ae1790193a619e26424c57adab7
SHA256

7917e7cff57a2ae16153745a920e523398f7493a00151531fb4c2378b32094f9
SHA512

6cc7620fd60e9cf1f19356df76b56bfa4a98dae64f40efc62f6af699bc05793043ebd0c1ae47c6861ba56a8da93e149507dd27e4bdca5cd329ed71ec6102cde2

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	2196	3904	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1192	3904	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

3904 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE
3904	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3904 wrote to memory of 2196	3904	EXCEL.EXE	rundll32.exe
PID 3904 wrote to memory of 2196	3904	EXCEL.EXE	rundll32.exe
PID 3904 wrote to memory of 1192	3904	EXCEL.EXE	rundll32.exe
PID 3904 wrote to memory of 1192	3904	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-268659284.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3904

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2196

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1192

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/1192-180-0x0000000000000000-mapping.dmp

Download
memory/2196-179-0x0000000000000000-mapping.dmp

Download
memory/3904-114-0x00007FF630BA0000-0x00007FF634156000-memory.dmp

Filesize
53.7MB

Download
memory/3904-115-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3904-116-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3904-117-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3904-118-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3904-119-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3904-122-0x00007FF844D60000-0x00007FF845E4E000-memory.dmp

Filesize
16.9MB

Download
memory/3904-123-0x00007FF842E60000-0x00007FF844D55000-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