a8f983eaa6a03d1837cc9d85c25cb152cd140540755fcd3307a5e50e73df1171

Analysis

max time kernel
136s
max time network
135s
platform
windows10_x64
resource
win10
submitted
13/07/2020, 20:00

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General

Target

SecuriteInfo.com.DOC.Kryptik.Q.9507.xls
Size

294KB
MD5

c4d00a8c5a19c0cd416bc3dee1fbad59
SHA1

0e0f4007f44fad588a6730c34e2f1489fb4faea0
SHA256

a8f983eaa6a03d1837cc9d85c25cb152cd140540755fcd3307a5e50e73df1171
SHA512

8d9a8cdae3af0639609e44b0bd82330bb01809ff5425dc3633fdeefa39e92d7bf844b66488b3df6b6a5bc1ae43809d9633793121c64b9b5c05ecae40f35946a1

Score

10^/10

Malware Config

Signatures

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3796	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	900	3796	rundll32.exe	66

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3796 wrote to memory of 900	3796	EXCEL.EXE	71
PID 3796 wrote to memory of 900	3796	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	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
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.EXE
3796	EXCEL.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\SecuriteInfo.com.DOC.Kryptik.Q.9507.xls"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
PID:3796
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\WbMFNqE\DTXZRqG\fytiOXY.dll,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:900

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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