010ba7fc1e7761a8adb054eaf1258ac9e15d584cff7936fd01e2f14ddd4f1476

General

Target

catalog-2128875808.xls
Size

367KB
MD5

864eaf02552de6c727e9310eb9cac578
SHA1

1e9fa89e689e4a62db7aff326a5427743709efe4
SHA256

bf079e444a7e9750fe3f3090e8d5c78447009427ad01e8cf9037653716809b13
SHA512

88b49fe78611e7103ad692c8fedd66b96851225ae6f333ef8fce226e47d1d89d8692b2fe48a5eb73f66cfac7a2c3db0a264fe747ea4dc4af7062c951c5a4a3b4

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	1096	3876	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2116	3876	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

3876 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE
3876	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3876 wrote to memory of 1096	3876	EXCEL.EXE	rundll32.exe
PID 3876 wrote to memory of 1096	3876	EXCEL.EXE	rundll32.exe
PID 3876 wrote to memory of 2116	3876	EXCEL.EXE	rundll32.exe
PID 3876 wrote to memory of 2116	3876	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-2128875808.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3876

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1096

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2116

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

Loading Replay Monitor...

Downloads

memory/1096-179-0x0000000000000000-mapping.dmp

Download
memory/2116-180-0x0000000000000000-mapping.dmp

Download
memory/3876-114-0x00007FF797170000-0x00007FF79A726000-memory.dmp

Filesize
53.7MB

Download
memory/3876-115-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/3876-116-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/3876-117-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/3876-118-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/3876-122-0x00007FFDDC160000-0x00007FFDDC170000-memory.dmp

Filesize
64KB

Download
memory/3876-121-0x00007FFDFC7D0000-0x00007FFDFD8BE000-memory.dmp

Filesize
16.9MB

Download
memory/3876-123-0x00007FFDFA810000-0x00007FFDFC705000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads