4f52b96d53dac715320a2565ee96357de130588c2639b372acd7763615da45a3

General

Target

catalog-2139553193.xls
Size

367KB
MD5

9025282441b6081717f9bbb01813c05b
SHA1

58e38f464272efc5794a7fcfdfc55836c1e9cdbd
SHA256

52cf3f492fb450d2a14d894d40e2c9f08c1cad11251c7f2c2d5ced10a454881e
SHA512

6a77c5310a86ef8ee2f0b34b1284215dfdba9e7fd5615c60dc627ceaea42cec3ac3ee6ae3dd5882957d69c1b990cf2c60a0067efe1e13c6a0c251ae22b5f42d2

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	2840	3908	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3948	3908	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

3908 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE
3908	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3908 wrote to memory of 2840	3908	EXCEL.EXE	rundll32.exe
PID 3908 wrote to memory of 2840	3908	EXCEL.EXE	rundll32.exe
PID 3908 wrote to memory of 3948	3908	EXCEL.EXE	rundll32.exe
PID 3908 wrote to memory of 3948	3908	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-2139553193.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3908

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2840

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3948

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/2840-179-0x0000000000000000-mapping.dmp

Download
memory/3908-114-0x00007FF694F90000-0x00007FF698546000-memory.dmp

Filesize
53.7MB

Download
memory/3908-115-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-116-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-117-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-118-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-119-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/3908-122-0x00007FF844DA0000-0x00007FF845E8E000-memory.dmp

Filesize
16.9MB

Download
memory/3908-123-0x00007FF842EA0000-0x00007FF844D95000-memory.dmp

Filesize
31.0MB

Download
memory/3948-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads