Malware Analysis Report

2024-08-06 15:23

Sample ID 240517-pcby8age4x
Target 4fbfaf382bd92fd84c935e38acdcb6ca_JaffaCakes118
SHA256 df35cf7f655ce630024c6b439e554e6bf594f63319d810fdd0bb7d8fd5950665
Tags
nanocore 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

df35cf7f655ce630024c6b439e554e6bf594f63319d810fdd0bb7d8fd5950665

Threat Level: Known bad

The file 4fbfaf382bd92fd84c935e38acdcb6ca_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

nanocore keylogger persistence spyware stealer trojan

NanoCore

Drops startup file

Adds Run key to start application

AutoIT Executable

Suspicious use of SetThreadContext

Drops file in Program Files directory

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SendNotifyMessage

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
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-05-17 12:10

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-17 12:10

Reported

2024-05-17 12:13

Platform

win7-20240220-en

Max time kernel

150s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RecoveryDrive.url C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3064 set thread context of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A
File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3064 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe

Processes

C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe

"C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 udp
NZ 172.111.184.248:54985 tcp

Files

memory/3064-5-0x0000000000130000-0x0000000000131000-memory.dmp

memory/2636-7-0x0000000000090000-0x00000000000C8000-memory.dmp

memory/2636-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2636-15-0x0000000000090000-0x00000000000C8000-memory.dmp

memory/2636-8-0x0000000000090000-0x00000000000C8000-memory.dmp

memory/2636-14-0x0000000000090000-0x00000000000C8000-memory.dmp

memory/2636-16-0x0000000074991000-0x0000000074992000-memory.dmp

memory/2636-17-0x0000000074990000-0x0000000074F3B000-memory.dmp

memory/2636-18-0x0000000074990000-0x0000000074F3B000-memory.dmp

memory/2636-21-0x0000000074990000-0x0000000074F3B000-memory.dmp

memory/2636-22-0x0000000074990000-0x0000000074F3B000-memory.dmp

memory/2636-23-0x0000000074990000-0x0000000074F3B000-memory.dmp

memory/2636-24-0x0000000074990000-0x0000000074F3B000-memory.dmp

memory/2636-25-0x0000000074990000-0x0000000074F3B000-memory.dmp

memory/2636-26-0x0000000074990000-0x0000000074F3B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-17 12:10

Reported

2024-05-17 12:13

Platform

win10v2004-20240508-en

Max time kernel

141s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RecoveryDrive.url C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.exe" C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3572 set thread context of 3264 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\DPI Subsystem\dpiss.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A
File opened for modification C:\Program Files (x86)\DPI Subsystem\dpiss.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3572 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3572 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3572 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3572 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
PID 3572 wrote to memory of 3264 N/A C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe

Processes

C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe

"C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
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 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 73.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp
US 8.8.8.8:53 yes.dnsabr.com udp
NZ 172.111.184.248:54985 yes.dnsabr.com tcp

Files

memory/3572-5-0x0000000001040000-0x0000000001041000-memory.dmp

memory/3264-6-0x0000000000340000-0x0000000000378000-memory.dmp

memory/3264-11-0x0000000073F72000-0x0000000073F73000-memory.dmp

memory/3264-12-0x0000000073F70000-0x0000000074521000-memory.dmp

memory/3264-13-0x0000000073F70000-0x0000000074521000-memory.dmp

memory/3264-16-0x0000000073F70000-0x0000000074521000-memory.dmp

memory/3264-17-0x0000000073F72000-0x0000000073F73000-memory.dmp

memory/3264-18-0x0000000073F70000-0x0000000074521000-memory.dmp

memory/3264-19-0x0000000073F70000-0x0000000074521000-memory.dmp