Malware Analysis Report

2024-10-24 21:20

Sample ID 240729-npd4nswgmj
Target 43d39f56904dcd521660465f2d217b75_JaffaCakes118
SHA256 2f5090315c92f675c4a7ce2b9a8feb6b850b13f5c1ca40646f71154dd6ea8158
Tags
antivm
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

2f5090315c92f675c4a7ce2b9a8feb6b850b13f5c1ca40646f71154dd6ea8158

Threat Level: Shows suspicious behavior

The file 43d39f56904dcd521660465f2d217b75_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

antivm

Deletes itself

Executes dropped EXE

Checks CPU configuration

Reads system network configuration

Reads runtime system information

Writes file to tmp directory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-29 11:34

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-29 11:34

Reported

2024-07-29 11:49

Platform

ubuntu2204-amd64-20240729-en

Max time kernel

149s

Max time network

150s

Command Line

[/tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118]

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A /tmp/freeBSD N/A
N/A N/A /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a N/A

Executes dropped EXE

Description Indicator Process Target
N/A /tmp/freeBSD /tmp/freeBSD N/A
N/A /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a N/A
N/A /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 N/A

Checks CPU configuration

antivm
Description Indicator Process Target
File opened for reading /proc/cpuinfo /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 N/A

Reads system network configuration

Description Indicator Process Target
File opened for reading /proc/net/dev /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 N/A

Reads runtime system information

Description Indicator Process Target
File opened for reading /proc/filesystems /usr/bin/cp N/A
File opened for reading /proc/sys/kernel/version /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 N/A
File opened for reading /proc/stat /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 N/A
File opened for reading /proc/filesystems /usr/bin/cp N/A
File opened for reading /proc/filesystems /usr/bin/cp N/A

Writes file to tmp directory

Description Indicator Process Target
File opened for modification /tmp/freeBSD /usr/bin/cp N/A
File opened for modification /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a /usr/bin/cp N/A
File opened for modification /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a N/A
File opened for modification /tmp/fake.cfg /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 N/A
File opened for modification /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 /usr/bin/cp N/A

Processes

/tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118

[/tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118]

/bin/sh

[sh -c cp /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 /tmp/freeBSD]

/usr/bin/cp

[cp /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 /tmp/freeBSD]

/bin/sh

[sh -c cp /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a]

/tmp/freeBSD

[/tmp/freeBSD /tmp/freeBSD 1]

/usr/bin/cp

[cp /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118 /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a]

/tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a

[/tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118]

/tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118

/bin/sh

[sh -c cp /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118]

/usr/bin/cp

[cp /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118a /tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118]

Network

Country Destination Domain Proto
N/A 224.0.0.251:5353 udp
CN 114.215.115.152:10991 tcp
CN 114.215.115.152:10991 tcp

Files

/tmp/freeBSD

MD5 43d39f56904dcd521660465f2d217b75
SHA1 eaaa5de68271d6f19e1c56cc60913614c7e9f836
SHA256 2f5090315c92f675c4a7ce2b9a8feb6b850b13f5c1ca40646f71154dd6ea8158
SHA512 45d75b4af604d9599d3b037e8df97f9df31257060b29d68529af1e93a02070959b767cee7944b96462589b49fed7165fd1746ff834922fc5a644ff5ddeabb43d

/tmp/43d39f56904dcd521660465f2d217b75_JaffaCakes118

MD5 91450d6fa9824d86424ccaae4e089629
SHA1 961b2f27081ee83b43ec6b0dd2d1aea59942d3f0
SHA256 aa9d435d8a7e9331a9d2400435e6c98ed876050f6acd0a2ecfa3eb3435ed8221
SHA512 d93f44c8c1af0047baa261bdca2dc60d1d4c28c8e0adcb65c1eb8f411c951dda49bad7eb69e82ac9cc0a808db8048740d68dc58aa13759eba575ae975c869da8