Malware Analysis Report

2024-09-11 10:02

Sample ID 240416-xjx42ahg69
Target f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118
SHA256 61b69d2a4ca9404f1a5b73fac4790b0a41c7c7f766ba90d5a459612b629bf9b1
Tags
limerat vjw0rm persistence rat trojan worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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 Overview

score
10/10

SHA256

61b69d2a4ca9404f1a5b73fac4790b0a41c7c7f766ba90d5a459612b629bf9b1

Threat Level: Known bad

The file f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

limerat vjw0rm persistence rat trojan worm

Vjw0rm

LimeRAT

Executes dropped EXE

Checks computer location settings

Drops startup file

Loads dropped DLL

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Creates scheduled task(s)

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Scheduled Task/Job
T1053
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Scheduled Task/Job
T1053
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-04-16 18:53

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-16 18:53

Reported

2024-04-16 18:56

Platform

win7-20240221-en

Max time kernel

150s

Max time network

153s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js

Signatures

LimeRAT

rat limerat

Vjw0rm

trojan worm vjw0rm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js C:\Windows\system32\wscript.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\New-Client.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\player.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\New-Client.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\New-Client.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-778096762-2241304387-192235952-1000\Software\Microsoft\Windows\CurrentVersion\Run\JXSCMTN53F = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js\"" C:\Windows\system32\wscript.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\player.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\player.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2784 wrote to memory of 2552 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 2784 wrote to memory of 2552 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 2784 wrote to memory of 2552 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 2784 wrote to memory of 2732 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2784 wrote to memory of 2732 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2784 wrote to memory of 2732 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2552 wrote to memory of 3032 N/A C:\Windows\System32\wscript.exe C:\Users\Admin\AppData\Roaming\New-Client.exe
PID 2552 wrote to memory of 3032 N/A C:\Windows\System32\wscript.exe C:\Users\Admin\AppData\Roaming\New-Client.exe
PID 2552 wrote to memory of 3032 N/A C:\Windows\System32\wscript.exe C:\Users\Admin\AppData\Roaming\New-Client.exe
PID 2552 wrote to memory of 3032 N/A C:\Windows\System32\wscript.exe C:\Users\Admin\AppData\Roaming\New-Client.exe
PID 3032 wrote to memory of 268 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3032 wrote to memory of 268 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3032 wrote to memory of 268 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3032 wrote to memory of 268 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3032 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Users\Admin\AppData\Roaming\player.exe
PID 3032 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Users\Admin\AppData\Roaming\player.exe
PID 3032 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Users\Admin\AppData\Roaming\player.exe
PID 3032 wrote to memory of 1632 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Users\Admin\AppData\Roaming\player.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\jXZTZBjYZp.js"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js

C:\Users\Admin\AppData\Roaming\New-Client.exe

"C:\Users\Admin\AppData\Roaming\New-Client.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\player.exe'"

C:\Users\Admin\AppData\Roaming\player.exe

"C:\Users\Admin\AppData\Roaming\player.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 pastebin.com udp
US 172.67.19.24:443 pastebin.com tcp

Files

C:\Users\Admin\AppData\Roaming\jXZTZBjYZp.js

MD5 676c61e12789321127ee39d4f6040e6e
SHA1 d28eb6214cc3b5659d758ac1f64c7ad0d9a1d0f5
SHA256 c2ac77ca98d95ffa6ad11691c395bf22c564ab87f8dfad3211533a215b89d28b
SHA512 439218663821587f1727d7b833dae0991b75ae9f0e5a0761c72984758b3f1750fdca7242f1f8d9626561c3eeab826892d190112b901b1f632df75c820f67e5f8

C:\Users\Admin\AppData\Roaming\New-Client.exe

MD5 1ad564a6ca1520e8886faffc4e0ff1d4
SHA1 7d3b61daef1afed73838351dbf788448cf88d031
SHA256 2c3a771c2ecbd58409c3f348220c5d9419901e882c61531b68e07b80eb0d3df4
SHA512 b54d6cb92876546c38503e5e673d765f2e323246f5adbaefa83cdc62af6a462d117d3dc183666f902a84575590aa02f94d9997e7783e6f99050c57a710fab441

memory/3032-11-0x00000000742E0000-0x000000007488B000-memory.dmp

memory/3032-12-0x00000000742E0000-0x000000007488B000-memory.dmp

memory/3032-13-0x0000000000BB0000-0x0000000000BF0000-memory.dmp

memory/3032-24-0x00000000742E0000-0x000000007488B000-memory.dmp

memory/1632-26-0x0000000001FB0000-0x0000000001FF0000-memory.dmp

memory/1632-25-0x00000000742E0000-0x000000007488B000-memory.dmp

memory/1632-27-0x00000000742E0000-0x000000007488B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-16 18:53

Reported

2024-04-16 18:56

Platform

win10v2004-20240412-en

Max time kernel

149s

Max time network

154s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js

Signatures

LimeRAT

rat limerat

Vjw0rm

trojan worm vjw0rm

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation C:\Windows\system32\wscript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation C:\Windows\System32\wscript.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Roaming\New-Client.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js C:\Windows\system32\wscript.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\New-Client.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\player.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4092317236-2027488869-1227795436-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\JXSCMTN53F = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js\"" C:\Windows\system32\wscript.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A
N/A pastebin.com N/A N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\player.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\player.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2088 wrote to memory of 3408 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 2088 wrote to memory of 3408 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 2088 wrote to memory of 4384 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2088 wrote to memory of 4384 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 3408 wrote to memory of 3192 N/A C:\Windows\System32\wscript.exe C:\Users\Admin\AppData\Roaming\New-Client.exe
PID 3408 wrote to memory of 3192 N/A C:\Windows\System32\wscript.exe C:\Users\Admin\AppData\Roaming\New-Client.exe
PID 3408 wrote to memory of 3192 N/A C:\Windows\System32\wscript.exe C:\Users\Admin\AppData\Roaming\New-Client.exe
PID 3192 wrote to memory of 3616 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3192 wrote to memory of 3616 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3192 wrote to memory of 3616 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Windows\SysWOW64\schtasks.exe
PID 3192 wrote to memory of 1556 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Users\Admin\AppData\Roaming\player.exe
PID 3192 wrote to memory of 1556 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Users\Admin\AppData\Roaming\player.exe
PID 3192 wrote to memory of 1556 N/A C:\Users\Admin\AppData\Roaming\New-Client.exe C:\Users\Admin\AppData\Roaming\player.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\jXZTZBjYZp.js"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\f41c8229b3c54c3ff51191372d9cb790_JaffaCakes118.js

C:\Users\Admin\AppData\Roaming\New-Client.exe

"C:\Users\Admin\AppData\Roaming\New-Client.exe"

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\player.exe'"

C:\Users\Admin\AppData\Roaming\player.exe

"C:\Users\Admin\AppData\Roaming\player.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 25.63.96.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 11.2.37.23.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 pastebin.com udp
US 172.67.19.24:443 pastebin.com tcp
US 8.8.8.8:53 24.19.67.172.in-addr.arpa udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 130.118.77.104.in-addr.arpa udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp
US 8.8.8.8:53 209.143.182.52.in-addr.arpa udp
US 8.8.8.8:53 bzsoftwaress.hopto.org udp

Files

C:\Users\Admin\AppData\Roaming\jXZTZBjYZp.js

MD5 676c61e12789321127ee39d4f6040e6e
SHA1 d28eb6214cc3b5659d758ac1f64c7ad0d9a1d0f5
SHA256 c2ac77ca98d95ffa6ad11691c395bf22c564ab87f8dfad3211533a215b89d28b
SHA512 439218663821587f1727d7b833dae0991b75ae9f0e5a0761c72984758b3f1750fdca7242f1f8d9626561c3eeab826892d190112b901b1f632df75c820f67e5f8

C:\Users\Admin\AppData\Roaming\New-Client.exe

MD5 1ad564a6ca1520e8886faffc4e0ff1d4
SHA1 7d3b61daef1afed73838351dbf788448cf88d031
SHA256 2c3a771c2ecbd58409c3f348220c5d9419901e882c61531b68e07b80eb0d3df4
SHA512 b54d6cb92876546c38503e5e673d765f2e323246f5adbaefa83cdc62af6a462d117d3dc183666f902a84575590aa02f94d9997e7783e6f99050c57a710fab441

memory/3192-11-0x0000000074B30000-0x00000000750E1000-memory.dmp

memory/3192-12-0x0000000074B30000-0x00000000750E1000-memory.dmp

memory/3192-13-0x0000000001240000-0x0000000001250000-memory.dmp

memory/3192-23-0x0000000074B30000-0x00000000750E1000-memory.dmp

memory/1556-24-0x0000000074B30000-0x00000000750E1000-memory.dmp

memory/1556-25-0x0000000001010000-0x0000000001020000-memory.dmp

memory/1556-26-0x0000000074B30000-0x00000000750E1000-memory.dmp

memory/1556-27-0x0000000074B30000-0x00000000750E1000-memory.dmp

memory/1556-28-0x0000000001010000-0x0000000001020000-memory.dmp