7d0f6fae31f17dc553e9294f38fe659c5baee2abfa6fa4a7847910b6bdbcc73c

General

Target

catalog-293505934.xls
Size

367KB
MD5

e418c30b1b736f8fe0f9954249c1e5a4
SHA1

ed03a46c59c55b707da90c44dd7e3317a08e75c9
SHA256

0701f832c3c572f16115a99fb7d401b019e0433012ee629aa9e7f49f8bc54760
SHA512

e2117b672e8cd46b9aa9abb5df123ca8350442d14bc1aa6354ba1ebfe953bfe37824fbdea3bbab4dee31161630c485989160c8deff68a107ac03cf51d2ddfc8a

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	2392	584	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2544	584	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

584 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE
584	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 584 wrote to memory of 2392	584	EXCEL.EXE	rundll32.exe
PID 584 wrote to memory of 2392	584	EXCEL.EXE	rundll32.exe
PID 584 wrote to memory of 2544	584	EXCEL.EXE	rundll32.exe
PID 584 wrote to memory of 2544	584	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-293505934.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:584
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2392
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2544

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/584-114-0x00007FF60A3B0000-0x00007FF60D966000-memory.dmp

Filesize
53.7MB

Download
memory/584-115-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/584-116-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/584-117-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/584-118-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/584-121-0x00007FF9EE820000-0x00007FF9EE830000-memory.dmp

Filesize
64KB

Download
memory/584-122-0x00007FFA0EBD0000-0x00007FFA0FCBE000-memory.dmp

Filesize
16.9MB

Download
memory/584-123-0x00007FFA0CCD0000-0x00007FFA0EBC5000-memory.dmp

Filesize
31.0MB

Download
memory/2392-179-0x0000000000000000-mapping.dmp

Download
memory/2544-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads