Malware Analysis Report

2024-11-15 08:37

Sample ID 240831-25152a1bmk
Target cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118
SHA256 4976d7941500393fd1c39d01900d11cf9a787c3158966867096d1cfc3ae0c6cd
Tags
agenttesla agilenet collection credential_access discovery keylogger spyware stealer trojan
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 Overview

score
10/10

SHA256

4976d7941500393fd1c39d01900d11cf9a787c3158966867096d1cfc3ae0c6cd

Threat Level: Known bad

The file cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

agenttesla agilenet collection credential_access discovery keylogger spyware stealer trojan

AgentTesla

Credentials from Password Stores: Credentials from Web Browsers

AgentTesla payload

Obfuscated with Agile.Net obfuscator

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Drops startup file

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

outlook_win_path

Suspicious behavior: MapViewOfSection

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

outlook_office_path

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-31 23:10

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-31 23:10

Reported

2024-08-31 23:16

Platform

win7-20240705-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

AgentTesla payload

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

Credentials from Password Stores: Credentials from Web Browsers

credential_access stealer

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe N/A

Obfuscated with Agile.Net obfuscator

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

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2752 set thread context of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2752 wrote to memory of 2972 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe"

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

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

Network

N/A

Files

memory/2752-0-0x000000007433E000-0x000000007433F000-memory.dmp

memory/2752-1-0x0000000000840000-0x00000000008DA000-memory.dmp

memory/2752-2-0x0000000004AD0000-0x0000000004B3E000-memory.dmp

memory/2752-3-0x0000000074330000-0x0000000074A1E000-memory.dmp

memory/2752-4-0x0000000002380000-0x00000000023D8000-memory.dmp

memory/2752-6-0x0000000074330000-0x0000000074A1E000-memory.dmp

memory/2972-13-0x0000000000400000-0x0000000000458000-memory.dmp

memory/2972-11-0x0000000000400000-0x0000000000458000-memory.dmp

memory/2752-9-0x0000000074330000-0x0000000074A1E000-memory.dmp

memory/2752-8-0x0000000074330000-0x0000000074A1E000-memory.dmp

memory/2972-7-0x0000000000400000-0x0000000000458000-memory.dmp

memory/2972-14-0x00000000713D2000-0x00000000713D4000-memory.dmp

memory/2972-15-0x00000000713D2000-0x00000000713D4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-31 23:10

Reported

2024-08-31 23:16

Platform

win10v2004-20240802-en

Max time kernel

145s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

AgentTesla payload

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

Credentials from Password Stores: Credentials from Web Browsers

credential_access stealer

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe N/A

Obfuscated with Agile.Net obfuscator

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

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3980 set thread context of 3228 N/A C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 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

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\cdc6d2fda7f51c7b9e7911f52fdad413_JaffaCakes118.exe"

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

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

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

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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 --field-trial-handle=4616,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=3768 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/3980-0-0x000000007494E000-0x000000007494F000-memory.dmp

memory/3980-1-0x0000000000910000-0x00000000009AA000-memory.dmp

memory/3980-2-0x0000000005240000-0x00000000052D2000-memory.dmp

memory/3980-3-0x0000000005540000-0x00000000055AE000-memory.dmp

memory/3980-4-0x0000000074940000-0x00000000750F0000-memory.dmp

memory/3980-5-0x0000000007B70000-0x0000000007BC8000-memory.dmp

memory/3980-7-0x0000000074940000-0x00000000750F0000-memory.dmp

memory/3228-8-0x0000000000400000-0x0000000000458000-memory.dmp

memory/3980-11-0x0000000074940000-0x00000000750F0000-memory.dmp

memory/3980-10-0x0000000074940000-0x00000000750F0000-memory.dmp

memory/3228-12-0x0000000071652000-0x0000000071653000-memory.dmp

memory/3228-13-0x0000000071650000-0x0000000071C01000-memory.dmp

memory/3228-14-0x0000000071650000-0x0000000071C01000-memory.dmp

memory/3228-15-0x0000000071652000-0x0000000071653000-memory.dmp

memory/3228-16-0x0000000071650000-0x0000000071C01000-memory.dmp