Malware Analysis Report

2024-08-06 14:44

Sample ID 240622-xet7kszblb
Target 0374895e71ef754c11bf2530d0a9e693_JaffaCakes118
SHA256 da5ede598b0921ec83296df2b0e625d3fb88fa05dc94d7771f8c25c2fc52da68
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

da5ede598b0921ec83296df2b0e625d3fb88fa05dc94d7771f8c25c2fc52da68

Threat Level: Known bad

The file 0374895e71ef754c11bf2530d0a9e693_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

NanoCore

Drops startup file

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

AutoIT Executable

Drops file in Program Files directory

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Scheduled Task
T1053.005
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Scheduled Task/Job
T1053
Scheduled Task
T1053.005
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Scheduled Task/Job
T1053
Scheduled Task
T1053.005
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

2024-06-22 18:46

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

2024-06-22 18:46

Reported

2024-06-22 18:49

Platform

win7-20240221-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cdp.url C:\Users\Admin\AppData\Local\Temp\Revised Proforma.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\NAS Host = "C:\\Program Files (x86)\\NAS Host\\nashost.exe" C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2204 set thread context of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\NAS Host\nashost.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
File created C:\Program Files (x86)\NAS Host\nashost.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Scheduled Task/Job: Scheduled Task

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2204 wrote to memory of 360 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 360 wrote to memory of 1912 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 360 wrote to memory of 1912 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 360 wrote to memory of 1912 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 360 wrote to memory of 1912 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 360 wrote to memory of 2992 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 360 wrote to memory of 2992 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 360 wrote to memory of 2992 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 360 wrote to memory of 2992 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe

"C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe"

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

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

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "NAS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1B8C.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "NAS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1C39.tmp"

Network

Country Destination Domain Proto
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp

Files

memory/360-0-0x0000000000400000-0x0000000000438000-memory.dmp

memory/360-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2204-9-0x0000000000170000-0x0000000000171000-memory.dmp

memory/360-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/360-7-0x0000000000400000-0x0000000000438000-memory.dmp

memory/360-1-0x0000000000400000-0x0000000000438000-memory.dmp

memory/360-10-0x0000000074192000-0x0000000074194000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp1B8C.tmp

MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

C:\Users\Admin\AppData\Local\Temp\tmp1C39.tmp

MD5 9f554f602c22cfc20079e966d177fadb
SHA1 789baa3425849bf239e47c6bcf352e6693a8c337
SHA256 4c760d5fe0c06cf4bf554170870f41181c61a217c37eb826903094dda86dd1f1
SHA512 b83e3e97dbe38ec4c64d9bef65e2521416f2d7434d78d05e66f729a2e0fbfea3f9bc6f6c4abaf76555af89a9565dfc0853d99067be9042dd66ed6246696eecbb

memory/360-22-0x0000000074192000-0x0000000074194000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 18:46

Reported

2024-06-22 18:49

Platform

win10v2004-20240508-en

Max time kernel

133s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cdp.url C:\Users\Admin\AppData\Local\Temp\Revised Proforma.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\RegAsm.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:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 660 set thread context of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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\RegAsm.exe N/A
File opened for modification C:\Program Files (x86)\DPI Subsystem\dpiss.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Scheduled Task/Job: Scheduled Task

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 660 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 660 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 660 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 660 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 660 wrote to memory of 2344 N/A C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2344 wrote to memory of 2264 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2344 wrote to memory of 2264 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2344 wrote to memory of 2264 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2344 wrote to memory of 4748 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2344 wrote to memory of 4748 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2344 wrote to memory of 4748 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe

"C:\Users\Admin\AppData\Local\Temp\Revised Proforma.exe"

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

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

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp491F.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp496E.tmp"

Network

Country Destination Domain Proto
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp
RU 95.213.251.165:54964 tcp

Files

memory/2344-1-0x0000000000500000-0x0000000000538000-memory.dmp

memory/660-5-0x0000000003C50000-0x0000000003C51000-memory.dmp

memory/2344-6-0x0000000073752000-0x0000000073753000-memory.dmp

memory/2344-7-0x0000000073750000-0x0000000073D01000-memory.dmp

memory/2344-8-0x0000000073750000-0x0000000073D01000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp491F.tmp

MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

C:\Users\Admin\AppData\Local\Temp\tmp496E.tmp

MD5 5fea24e883e06e4df6d240dc72abf2c5
SHA1 d778bf0f436141e02df4b421e8188abdcc9a84a4
SHA256 e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66
SHA512 15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

memory/2344-20-0x0000000073750000-0x0000000073D01000-memory.dmp

memory/2344-21-0x0000000073752000-0x0000000073753000-memory.dmp

memory/2344-22-0x0000000073750000-0x0000000073D01000-memory.dmp