agenttesla | c39033fb9aa3af73b672cd1784036e84a3bb20d7cb8d2dd612208bdd5b96d622

General

Target

5.exe
Size

635KB
MD5

1fb2088c9d4054cb8881b8065f8c7fcc
SHA1

4adeea429e6ec3fd6c3ce62e184c61b4a1be12b1
SHA256

c39033fb9aa3af73b672cd1784036e84a3bb20d7cb8d2dd612208bdd5b96d622
SHA512

f7935457e959d4ba4684483753e2ca02820fac4fc0c5d3f08a43108d85230dc62be4ad0dd437a276f4f10005ca585896e179a0e3e7ab6ea098b28d7076dc7bd7
SSDEEP

12288:T/qRqjqYB2HqyF1ip9IfxWledlMq6mapp/VhwXyhl43E5aIsKtM:TqpUcrF+IZWljq1mp/Vh2yhl5lM

Score

10^/10

agenttesla credential_access discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.bonnyriggdentalsurgery.com.au
Port:
587
Username:
[email protected]
Password:
eL)rV@QBKA#m
Email To:
[email protected]

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
320	powershell.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 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

Looks up external IP address via web service 3 IoCs

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

flow	ioc
6	ip-api.com
4	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2092 set thread context of 660	2092	5.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	5.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
660	5.exe
660	5.exe
320	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	660	5.exe
Token: SeDebugPrivilege	320	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 320	2092	5.exe	31
PID 2092 wrote to memory of 320	2092	5.exe	31
PID 2092 wrote to memory of 320	2092	5.exe	31
PID 2092 wrote to memory of 320	2092	5.exe	31
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33
PID 2092 wrote to memory of 660	2092	5.exe	33

C:\Users\Admin\AppData\Local\Temp\5.exe
"C:\Users\Admin\AppData\Local\Temp\5.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\5.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:320
- C:\Users\Admin\AppData\Local\Temp\5.exe
  "C:\Users\Admin\AppData\Local\Temp\5.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/660-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/660-8-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/660-15-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/660-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/660-19-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/660-20-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/660-7-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/660-18-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/660-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/660-24-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/660-10-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2092-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2092-1-0x00000000002C0000-0x0000000000364000-memory.dmp

Filesize
656KB

Download
memory/2092-6-0x00000000056E0000-0x0000000005764000-memory.dmp

Filesize
528KB

Download
memory/2092-21-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-5-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2092-4-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2092-3-0x00000000004D0000-0x00000000004E0000-memory.dmp

Filesize
64KB

Download

Analysis

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