a4cf3f99be53cba41321f9f51169f48f43ada0a2cc08c89f6f92b5b07218c5e2

General

Target

catalog-1974012548.xls
Size

367KB
MD5

f4cfdf8031d98897354017d762c35f02
SHA1

8abc3b0303fdd554b1e7b8c8a07308f15bc548fe
SHA256

fabc1bb20bfac0798fe7895bf6b2da5998501eacce303bc1c6ec82bf9d1b56f6
SHA512

aa573abe426225dc2cc88e5ebf9a2b2f48c937f283874dada0360813def162846870dda65337c417ee1c82e3adb368709bb5c140fbe5fca8e2ce43f024bf65bf

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	1560	4048	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3904	4048	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4048 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE
4048	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4048 wrote to memory of 1560	4048	EXCEL.EXE	rundll32.exe
PID 4048 wrote to memory of 1560	4048	EXCEL.EXE	rundll32.exe
PID 4048 wrote to memory of 3904	4048	EXCEL.EXE	rundll32.exe
PID 4048 wrote to memory of 3904	4048	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-1974012548.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4048

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1560

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3904

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/1560-179-0x0000000000000000-mapping.dmp

Download
memory/3904-180-0x0000000000000000-mapping.dmp

Download
memory/4048-114-0x00007FF79D320000-0x00007FF7A08D6000-memory.dmp

Filesize
53.7MB

Download
memory/4048-115-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4048-116-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4048-117-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4048-118-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4048-122-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4048-121-0x00007FFDC3080000-0x00007FFDC416E000-memory.dmp

Filesize
16.9MB

Download
memory/4048-123-0x00007FFDC1180000-0x00007FFDC3075000-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