Malware Analysis Report

2024-10-19 08:16

Sample ID 220831-ks1kasbghp
Target WMI.exe
SHA256 54e7eb310fbba8c3ad41bb284180f9839cd4a2436da36b33404fc04460c449a8
Tags
blackcat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral7

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral9

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral10

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral8

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

54e7eb310fbba8c3ad41bb284180f9839cd4a2436da36b33404fc04460c449a8

Threat Level: Known bad

The file WMI.exe was found to be: Known bad.

Malicious Activity Summary

blackcat

Blackcat family

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-08-31 08:52

Signatures

Blackcat family

blackcat

Analysis: behavioral5

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:53

Platform

android-x64-arm64-20220823-en

Max time network

9s

Command Line

N/A

Signatures

N/A

Processes

N/A

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
US 1.1.1.1:53 android.apis.google.com udp
US 1.1.1.1:53 android.apis.google.com udp
US 1.1.1.1:53 android.apis.google.com udp
NL 172.217.168.206:443 android.apis.google.com tcp
NL 142.251.36.46:443 udp

Files

N/A

Analysis: behavioral6

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:55

Platform

macos-20220504-en

Max time kernel

89s

Max time network

72s

Command Line

[sh -c sudo /bin/zsh -c "/Users/run/WMI.exe"]

Signatures

N/A

Processes

/bin/sh

[sh -c sudo /bin/zsh -c "/Users/run/WMI.exe"]

/bin/bash

[sh -c sudo /bin/zsh -c "/Users/run/WMI.exe"]

/bin/bash

[sh -c sudo /bin/zsh -c "/Users/run/WMI.exe"]

/usr/bin/sudo

[sudo /bin/zsh -c /Users/run/WMI.exe]

/usr/bin/sudo

[sudo /bin/zsh -c /Users/run/WMI.exe]

/usr/sbin/spctl

[/usr/sbin/spctl --status]

/bin/zsh

[/bin/zsh -c /Users/run/WMI.exe]

/bin/zsh

[/bin/zsh -c /Users/run/WMI.exe]

/Users/run/WMI.exe

[/Users/run/WMI.exe]

/Users/run/WMI.exe

[/Users/run/WMI.exe]

/usr/sbin/spctl

[/usr/sbin/spctl --test-devid-status]

/usr/bin/syslog

[/usr/bin/syslog -s -k com.apple.message.domain com.apple.security.assessment.current_state com.apple.message.signature assessments enabled com.apple.message.signature2 devid enabled Message Gatekeeper state assessments enabled/devid enabled]

Network

Country Destination Domain Proto
US 8.8.8.8:53 11.courier-push-apple.com.akadns.net udp
US 8.8.8.8:53 e673.dsce9.akamaiedge.net udp
NL 17.253.105.201:80 valid.apple.com tcp
US 8.8.8.8:53 itunes.apple.com udp
NL 104.81.140.28:443 itunes.apple.com tcp
US 8.8.8.8:53 certs.apple.com udp
NL 17.253.105.201:80 certs.apple.com tcp

Files

N/A

Analysis: behavioral7

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:53

Platform

ubuntu1804-amd64-en-20211208

Max time kernel

0s

Command Line

[/tmp/WMI.exe]

Signatures

N/A

Processes

/tmp/WMI.exe

[/tmp/WMI.exe]

Network

N/A

Files

N/A

Analysis: behavioral9

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:53

Platform

debian9-mipsbe-en-20211208

Max time kernel

0s

Command Line

[/tmp/WMI.exe]

Signatures

N/A

Processes

/tmp/WMI.exe

[/tmp/WMI.exe]

Network

N/A

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:54

Platform

win7-20220812-en

Max time kernel

43s

Max time network

49s

Command Line

"C:\Users\Admin\AppData\Local\Temp\WMI.exe"

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1728 wrote to memory of 2028 N/A C:\Windows\System32\control.exe C:\Windows\system32\rundll32.exe
PID 1728 wrote to memory of 2028 N/A C:\Windows\System32\control.exe C:\Windows\system32\rundll32.exe
PID 1728 wrote to memory of 2028 N/A C:\Windows\System32\control.exe C:\Windows\system32\rundll32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\WMI.exe

"C:\Users\Admin\AppData\Local\Temp\WMI.exe"

C:\Windows\System32\control.exe

"C:\Windows\System32\control.exe" "C:\Windows\system32\ncpa.cpl",

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" Shell32.dll,Control_RunDLL "C:\Windows\system32\ncpa.cpl",

Network

Country Destination Domain Proto
HK 45.195.204.56:6464 tcp

Files

memory/1972-54-0x00000000761A1000-0x00000000761A3000-memory.dmp

memory/1728-55-0x000007FEFB941000-0x000007FEFB943000-memory.dmp

memory/2028-56-0x0000000000000000-mapping.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:53

Platform

android-x86-arm-20220823-en

Max time network

6s

Command Line

N/A

Signatures

N/A

Processes

N/A

Network

Country Destination Domain Proto
NL 142.250.179.170:443 tcp
NL 216.58.214.14:443 udp
N/A 224.0.0.251:5353 udp

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:53

Platform

android-x64-20220823-en

Max time network

7s

Command Line

N/A

Signatures

N/A

Processes

N/A

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
NL 142.250.179.196:443 udp
NL 142.250.179.196:443 udp

Files

N/A

Analysis: behavioral10

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:53

Platform

debian9-mipsel-en-20211208

Max time kernel

0s

Command Line

[/tmp/WMI.exe]

Signatures

N/A

Processes

/tmp/WMI.exe

[/tmp/WMI.exe]

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:54

Platform

win10v2004-20220812-en

Max time kernel

76s

Max time network

81s

Command Line

"C:\Users\Admin\AppData\Local\Temp\WMI.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\WMI.exe

"C:\Users\Admin\AppData\Local\Temp\WMI.exe"

Network

Country Destination Domain Proto
NL 95.101.78.82:80 tcp
US 93.184.221.240:80 tcp
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
NL 104.80.225.205:443 tcp
US 93.184.221.240:80 tcp

Files

N/A

Analysis: behavioral8

Detonation Overview

Submitted

2022-08-31 08:52

Reported

2022-08-31 08:53

Platform

debian9-armhf-en-20211208

Max time kernel

0s

Command Line

[/tmp/WMI.exe]

Signatures

N/A

Processes

/tmp/WMI.exe

[/tmp/WMI.exe]

Network

N/A

Files

N/A