agenttesla | 670a00c65eb6f7c48c1e961068a1cb7fd3653bd29377161cd04bf15c9d010da2

General

Target

ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe
Size

1.4MB
MD5

ca061301b457dd38398234c19bdc436d
SHA1

2b6e0edc6a572c579d517e3f8b7058ec842a23ed
SHA256

670a00c65eb6f7c48c1e961068a1cb7fd3653bd29377161cd04bf15c9d010da2
SHA512

dc70feb9f2830775efd345f416a992209ecb1f7edb7e36a267de31f4d6a98135d0728ce98ef1ecb8520e7e2cc68ea63d447baf5d7aed49acda2d7033b92ac893
SSDEEP

24576:vu6Jx3O0c+JY5UZ+XC0kGso/WaOxd08AUSltkrF0TydEFiM1aawzAWY:ZI0c++OCvkGsUWaO3tFzG+gy5XY

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 1 IoCs

resource	yara_rule
behavioral2/memory/2456-2-0x0000000000410000-0x0000000000462000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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 2 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
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-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3352 set thread context of 2456	3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe	88

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	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2456	RegAsm.exe
2456	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2456	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe
3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe
3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe
3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe
3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2456	RegAsm.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3352 wrote to memory of 2456	3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe	88
PID 3352 wrote to memory of 2456	3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe	88
PID 3352 wrote to memory of 2456	3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe	88
PID 3352 wrote to memory of 2456	3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe	88
PID 3352 wrote to memory of 2456	3352	ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe	88

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ca061301b457dd38398234c19bdc436d_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2456-2-0x0000000000410000-0x0000000000462000-memory.dmp

Filesize
328KB

Download
memory/2456-7-0x0000000074102000-0x0000000074103000-memory.dmp

Filesize
4KB

Download
memory/2456-8-0x0000000074100000-0x00000000746B1000-memory.dmp

Filesize
5.7MB

Download
memory/2456-9-0x0000000074100000-0x00000000746B1000-memory.dmp

Filesize
5.7MB

Download
memory/2456-10-0x0000000074102000-0x0000000074103000-memory.dmp

Filesize
4KB

Download
memory/2456-11-0x0000000074100000-0x00000000746B1000-memory.dmp

Filesize
5.7MB

Download
memory/3352-0-0x0000000001070000-0x00000000010BD000-memory.dmp

Filesize
308KB

Download
memory/3352-1-0x00000000010C0000-0x00000000010C1000-memory.dmp

Filesize
4KB

Download

Analysis

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