agenttesla | e968bd84f2b72b1d238b1eb28cc1cbc8eeb24d1db7acee8e8ca433ab5b28b106

General

Target

AWB-18052023.exe
Size

298KB
MD5

b8b4d97f8f291a30d44ba156a4d4cbd1
SHA1

2f545aad0c50c37754d9716bee7b9a37d5289910
SHA256

2e5e690fe5a9607c51574cd1e8444591a9dd524fafc78911ff9f09ee5242bff1
SHA512

7a8f9a452824555833158769c6a5247ca174679bdc8a527d3535b3fdd0fc05d1ead8097cb006c6a25dfce6493950798624ec81893122687ac5c1c9ea70fa387a
SSDEEP

6144:6UFxbIBMP6HyvbefvpM9mkT7XmHlPF/6IC17Cjj1VA:VbgIuO9mQmHZFSRC

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.cynthiacostamilan.com.br
Port:
587
Username:
[email protected]
Password:
Qwertyuiop123!@#
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
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
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
3	api.ipify.org
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2028 set thread context of 1920	2028	AWB-18052023.exe	29

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1920	RegAsm.exe
1920	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1920	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 1976	2028	AWB-18052023.exe	28
PID 2028 wrote to memory of 1976	2028	AWB-18052023.exe	28
PID 2028 wrote to memory of 1976	2028	AWB-18052023.exe	28
PID 2028 wrote to memory of 1976	2028	AWB-18052023.exe	28
PID 2028 wrote to memory of 1976	2028	AWB-18052023.exe	28
PID 2028 wrote to memory of 1976	2028	AWB-18052023.exe	28
PID 2028 wrote to memory of 1976	2028	AWB-18052023.exe	28
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29
PID 2028 wrote to memory of 1920	2028	AWB-18052023.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\AWB-18052023.exe
"C:\Users\Admin\AppData\Local\Temp\AWB-18052023.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1976
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1920-63-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-68-0x0000000000D10000-0x0000000000D50000-memory.dmp

Filesize
256KB

Download
memory/1920-86-0x0000000000D10000-0x0000000000D50000-memory.dmp

Filesize
256KB

Download
memory/1920-61-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-58-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-59-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1920-60-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-65-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-67-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2028-54-0x00000000003D0000-0x0000000000420000-memory.dmp

Filesize
320KB

Download
memory/2028-55-0x0000000000380000-0x00000000003C6000-memory.dmp

Filesize
280KB

Download
memory/2028-57-0x0000000004B60000-0x0000000004BA0000-memory.dmp

Filesize
256KB

Download
memory/2028-56-0x0000000000450000-0x000000000045A000-memory.dmp

Filesize
40KB

Download

Analysis

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