de8f0c10345af57a06a9f5a64f7fe2916e96b02f16c6bbb10fbc11325eebc3f8

Analysis

max time kernel
135s
max time network
134s
platform
windows10_x64
resource
win10
submitted
13/07/2020, 20:00

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General

Target
SecuriteInfo.com.DOC.Kryptik.Q.19994.xls
Size 292KB
Sample200713-vblmr6jyxa
SHA256 de8f0c10345af57a06a9f5a64f7fe2916e96b02f16c6bbb10fbc11325eebc3f8
MD5 c57ccc71cc25b2bfd3068264e639f94f
SHA1 2712b0cef74d9e365cab0b3074f90b6333245105
SHA512 5341399a37894e6a3d36a824fa5109bb8026b32e25c49764c4e0d578607f800043aa1508cd8bcaea4f308c019f0f7a34e039e54a9ac7b58420518f4ef366bbb3
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 744	3588	EXCEL.EXE	71
PID 3588 wrote to memory of 744	3588	EXCEL.EXE	71

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

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

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

Suspicious use of SetWindowsHookEx 14 IoCs

pid	Process
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE
3588	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3588	EXCEL.EXE

Process spawned unexpected child process 1 IoCs

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

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	744	3588	rundll32.exe	66

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.19994.xls"
1⤵
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
PID:3588
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\WbMFNqE\DTXZRqG\fytiOXY.dll,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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