6e650a4383b6094da81c5d909ea099d520b969348e7189d6b04b6cb5dffdf754

Analysis

max time kernel
148s
max time network
147s
platform
windows10_x64
resource
win10v200430
submitted
13-07-2020 20:00

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General

Target

SecuriteInfo.com.DOC.Kryptik.Q.17436.xls
Size

303KB
MD5

50d833a21db581f09239c26b5723376b
SHA1

d11f201a327d253cc68836e39ca73ece51f2767b
SHA256

6e650a4383b6094da81c5d909ea099d520b969348e7189d6b04b6cb5dffdf754
SHA512

9f9be8e4688ae30360b5bcf50fc1307a569cc1cfdea443708c7a795b8bd4285a3c989ed7f2d773aef7647680f22f0f4e41fb346c552bb084dab2f0801e1885c7

Score

10^/10

Malware Config

Signatures

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE
2536	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2536 EXCEL.EXE

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.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	1760	2536	rundll32.exe	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2536 wrote to memory of 1760	2536	EXCEL.EXE	rundll32.exe
PID 2536 wrote to memory of 1760	2536	EXCEL.EXE	rundll32.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

Enumerates connected drives 3 TTPs

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.DOC.Kryptik.Q.17436.xls"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
PID:2536

C:\Windows\System32\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\WbMFNqE\DTXZRqG\fytiOXY.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1760

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1760-0-0x0000000000000000-mapping.dmp

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