agenttesla | 999e990bb183edc20c2fdf22c4897aaef68a1a1ed6005dbfaeab4a85f6e32947

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-09-2024 22:23

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General

Target

03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
Size

1.6MB
MD5

03783cfb7ad21dbda75d1c0976dd9e76
SHA1

6a3ee724e7997a1e94b13c626371784f41e38b23
SHA256

999e990bb183edc20c2fdf22c4897aaef68a1a1ed6005dbfaeab4a85f6e32947
SHA512

fe8e83702b9127b5913f7d8a6c54214af4dc15704ed99e49979171a76d36157c369e0383226e43b41d126f5e946088b6919cb6a569c2a740f129adcef94a3786
SSDEEP

24576:RAHnh+eWsN3skA4RV1Hom2KXMmHa/1lZ4c+G7f0mcwBfTHDEPAHpjkGX5:oh+ZkldoPK8YavDEYJY+

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla payload 12 IoCs

resource	yara_rule
behavioral2/memory/3944-1-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-12-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-28-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-25-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-23-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-19-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-18-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-15-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-14-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-26-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-20-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3944-13-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegAsm.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.url	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
43	checkip.amazonaws.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1728 set thread context of 3944	1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe	82

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
3944	RegAsm.exe
3944	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3944	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 3944	1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe	82
PID 1728 wrote to memory of 3944	1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe	82
PID 1728 wrote to memory of 3944	1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe	82
PID 1728 wrote to memory of 3944	1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe	82
PID 1728 wrote to memory of 3944	1728	03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\03783cfb7ad21dbda75d1c0976dd9e76_JaffaCakes118.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1728-0-0x0000000001140000-0x0000000001141000-memory.dmp

Filesize
4KB

Download
memory/3944-1-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-10-0x0000000073512000-0x0000000073513000-memory.dmp

Filesize
4KB

Download
memory/3944-11-0x0000000073510000-0x0000000073AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3944-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-28-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-25-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-29-0x0000000073510000-0x0000000073AC1000-memory.dmp

Filesize
5.7MB

Download
memory/3944-23-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-19-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-15-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-14-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-26-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-20-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3944-30-0x0000000073512000-0x0000000073513000-memory.dmp

Filesize
4KB

Download
memory/3944-31-0x0000000073510000-0x0000000073AC1000-memory.dmp

Filesize
5.7MB

Download