21384a43070c99c8f600c71458ff52c4ea1868a37e8044761be4f24bb6c5a390

General

Target

catalog-300864781.xls
Size

367KB
MD5

375717e9854009c04afe1c165b852d53
SHA1

351a6c60703e139f34730942ed46fb1338bdf6e0
SHA256

a9a6341003f9cf6eb13ef9dd9a0c78d7e4beb53f2475466ab7fac198cb6f97a0
SHA512

d70271401543899fde7f06f237949725cba2128bd46a463532fbfc07aeec0ac085c2900f6306d2044e706d8828a4376be47c77cff1caa871697f9cb45ca4b8d1

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	1368	1824	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3500	1824	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

1824 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1824 wrote to memory of 1368	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 1368	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 3500	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 3500	1824	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-300864781.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1824
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1368
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1368-179-0x0000000000000000-mapping.dmp

Download
memory/1824-114-0x00007FF6E4F20000-0x00007FF6E84D6000-memory.dmp

Filesize
53.7MB

Download
memory/1824-115-0x00007FFBE40C0000-0x00007FFBE40D0000-memory.dmp

Filesize
64KB

Download
memory/1824-116-0x00007FFBE40C0000-0x00007FFBE40D0000-memory.dmp

Filesize
64KB

Download
memory/1824-117-0x00007FFBE40C0000-0x00007FFBE40D0000-memory.dmp

Filesize
64KB

Download
memory/1824-118-0x00007FFBE40C0000-0x00007FFBE40D0000-memory.dmp

Filesize
64KB

Download
memory/1824-122-0x00007FFBE40C0000-0x00007FFBE40D0000-memory.dmp

Filesize
64KB

Download
memory/1824-121-0x00007FFC041D0000-0x00007FFC052BE000-memory.dmp

Filesize
16.9MB

Download
memory/1824-123-0x0000021033DD0000-0x0000021035CC5000-memory.dmp

Filesize
31.0MB

Download
memory/3500-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads