23b67ca98a25fffdca4e8d542a5bbfa69110d0ca07548b219eed5948f79db801

Analysis

max time kernel
144s
max time network
146s
platform
windows10_x64
resource
win10v200430
submitted
13/07/2020, 20:00

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General

Target

SecuriteInfo.com.DOC.Kryptik.Q.4317.xls
Size

302KB
MD5

37e08da7efc7124d242a227a31509e89
SHA1

2b7103a7f8b0c3e0add04401f91164306a885746
SHA256

23b67ca98a25fffdca4e8d542a5bbfa69110d0ca07548b219eed5948f79db801
SHA512

690a9c7ee7afb2c54b0ccab8605dea81d3d2b59b89030526e16c5e403f201101cdc8bb0272cdcdaa0864e8cceae0d397e989d576194a6b12f15a703105c45f38

Score

10^/10

Malware Config

Signatures

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE
976	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
976	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	4000	976	rundll32.exe	67

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 976 wrote to memory of 4000	976	EXCEL.EXE	74
PID 976 wrote to memory of 4000	976	EXCEL.EXE	74

Enumerates connected drives 3 TTPs

Query Registry
T1012

Peripheral Device Discovery
T1120

System Information Discovery
T1082

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

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.4317.xls"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
PID:976
- C:\Windows\System32\rundll32.exe
  "C:\Windows\System32\rundll32.exe" C:\WbMFNqE\DTXZRqG\fytiOXY.dll,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:4000

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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