Malware Analysis Report

2024-10-23 17:02

Sample ID 240401-2vxpvshh97
Target 7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118
SHA256 89dd90006d6cd58559565a7ccebc2147780e2a3ae084b5d114b2077c2ae341d7
Tags
xloader hr8n loader rat
score
10/10

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: behavioral2

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 Overview

score
10/10

SHA256

89dd90006d6cd58559565a7ccebc2147780e2a3ae084b5d114b2077c2ae341d7

Threat Level: Known bad

The file 7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

xloader hr8n loader rat

Xloader

Xloader payload

Loads dropped DLL

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Enumerates physical storage devices

NSIS installer

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-01 22:54

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

NSIS installer

installer
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-01 22:54

Reported

2024-04-01 22:57

Platform

win7-20240221-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe"

Signatures

Xloader

loader xloader

Xloader payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1956 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe
PID 1956 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe
PID 1956 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe
PID 1956 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe
PID 1956 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe
PID 1956 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe
PID 1956 wrote to memory of 2088 N/A C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\nst1076.tmp\ygkzme.dll

MD5 82ef6b004a2d1441297053109ffde16c
SHA1 1780e9780c38e5be83008d42da2da782b5f27402
SHA256 5e4bf71710738a4f7f90457c76546979b65716b42125f2fe81153ed9fe2b96e1
SHA512 d1d7b3a038429cd0b27fbd5eb1633f6131ef68ae66f9d7dd272ca16498567b7b5e22138c5b1a91e563a617463949f3d5ab7cb7cce5a63cd1bca20f3dc5730ae2

memory/2088-8-0x0000000000400000-0x0000000000429000-memory.dmp

memory/2088-10-0x00000000008F0000-0x0000000000BF3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-01 22:54

Reported

2024-04-01 22:57

Platform

win10v2004-20240226-en

Max time kernel

91s

Max time network

92s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\7ca5a6d622c55365fda10c9e9ba8ee88_JaffaCakes118.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3596 -ip 3596

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3596 -s 1044

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 202.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 40.134.221.88.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\nsy3653.tmp\ygkzme.dll

MD5 82ef6b004a2d1441297053109ffde16c
SHA1 1780e9780c38e5be83008d42da2da782b5f27402
SHA256 5e4bf71710738a4f7f90457c76546979b65716b42125f2fe81153ed9fe2b96e1
SHA512 d1d7b3a038429cd0b27fbd5eb1633f6131ef68ae66f9d7dd272ca16498567b7b5e22138c5b1a91e563a617463949f3d5ab7cb7cce5a63cd1bca20f3dc5730ae2

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-01 22:54

Reported

2024-04-01 22:57

Platform

win7-20240221-en

Max time kernel

118s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ygkzme.dll,#1

Signatures

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ygkzme.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ygkzme.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2200 -s 256

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-01 22:54

Reported

2024-04-01 22:57

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

152s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ygkzme.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1760 wrote to memory of 4076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1760 wrote to memory of 4076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1760 wrote to memory of 4076 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ygkzme.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\ygkzme.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4076 -ip 4076

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4076 -s 728

Network

Country Destination Domain Proto
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 202.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 218.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 200.79.70.13.in-addr.arpa udp

Files

N/A