Malware Analysis Report

2024-08-06 14:43

Sample ID 240614-mtg6fsxcmb
Target a942643804b1c17f06c0efb585facc12_JaffaCakes118
SHA256 6a7fda0b4bb60c7b6a75f790f05a43876df82ddc5b2440f6e9de4008a17b9f9e
Tags
nanocore evasion keylogger persistence spyware stealer trojan
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

6a7fda0b4bb60c7b6a75f790f05a43876df82ddc5b2440f6e9de4008a17b9f9e

Threat Level: Known bad

The file a942643804b1c17f06c0efb585facc12_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

Nanocore family

NanoCore

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Program Files directory

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

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

Analysis: static1

Detonation Overview

Reported

2024-06-14 10:45

Signatures

Nanocore family

nanocore

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 10:45

Reported

2024-06-14 10:47

Platform

win7-20240508-en

Max time kernel

147s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\NTFS Monitor = "C:\\Program Files (x86)\\NTFS Monitor\\ntfsmon.exe" C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\NTFS Monitor\ntfsmon.exe C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
File opened for modification C:\Program Files (x86)\NTFS Monitor\ntfsmon.exe C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 173.3.18.89:54984 tcp
US 173.3.18.89:54984 tcp
US 173.3.18.89:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 173.3.18.89:54984 tcp
US 173.3.18.89:54984 tcp
US 173.3.18.89:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 173.3.18.89:54984 tcp
US 173.3.18.89:54984 tcp

Files

memory/2368-0-0x0000000074B41000-0x0000000074B42000-memory.dmp

memory/2368-1-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2368-2-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2368-5-0x0000000074B40000-0x00000000750EB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 10:45

Reported

2024-06-14 10:47

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe" C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\SMTP Subsystem\smtpss.exe C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
File opened for modification C:\Program Files (x86)\SMTP Subsystem\smtpss.exe C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\a942643804b1c17f06c0efb585facc12_JaffaCakes118.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4136 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 173.3.18.89:54984 tcp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 57.82.21.2.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 173.3.18.89:54984 tcp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 173.3.18.89:54984 tcp
NL 52.142.223.178:80 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
US 173.3.18.89:54984 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 173.3.18.89:54984 tcp
US 173.3.18.89:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
US 173.3.18.89:54984 tcp

Files

memory/5016-0-0x0000000074712000-0x0000000074713000-memory.dmp

memory/5016-1-0x0000000074710000-0x0000000074CC1000-memory.dmp

memory/5016-2-0x0000000074710000-0x0000000074CC1000-memory.dmp

memory/5016-5-0x0000000074710000-0x0000000074CC1000-memory.dmp

memory/5016-6-0x0000000074712000-0x0000000074713000-memory.dmp

memory/5016-7-0x0000000074710000-0x0000000074CC1000-memory.dmp

memory/5016-8-0x0000000074710000-0x0000000074CC1000-memory.dmp

memory/5016-9-0x0000000074710000-0x0000000074CC1000-memory.dmp