agenttesla | 850ce005298ab95b563a50c0b95618d97bc4696e3fffddf12b06c25bf933bfb0

General

Target

Transferencia.exe
Size

624KB
MD5

6c69b1778096564e9926f9cab8600031
SHA1

39592861740092bbfe0bcb632b0bc55fbde58ab1
SHA256

850ce005298ab95b563a50c0b95618d97bc4696e3fffddf12b06c25bf933bfb0
SHA512

ad501fd2ccf52740dc0c64bef085551f840f926b2f721923016ad0021420d541de2ec4f2298a1ef99715834aa13bf55717c3849f1c48f6da156d95e8c90ff5e4
SSDEEP

12288:hPYPfY7fsbKjfK9yK2kVM7Ta/UO42LMW2lNDCxNZP:hPYPgwbKjGyK2j6UqMWENDk

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.gamasof.com
Port:
587
Username:
[email protected]
Password:
Mariana2020*
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-1-5-21-3011986978-2180659500-3669311805-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Transferencia.exe
Key opened	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Transferencia.exe
Key opened	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Transferencia.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	Transferencia.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
62	api.ipify.org
63	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 400 set thread context of 4848	400	Transferencia.exe	97

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4848	Transferencia.exe
4848	Transferencia.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4848	Transferencia.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4848	Transferencia.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 4848	400	Transferencia.exe	97
PID 400 wrote to memory of 4848	400	Transferencia.exe	97
PID 400 wrote to memory of 4848	400	Transferencia.exe	97
PID 400 wrote to memory of 4848	400	Transferencia.exe	97
PID 400 wrote to memory of 4848	400	Transferencia.exe	97
PID 400 wrote to memory of 4848	400	Transferencia.exe	97
PID 400 wrote to memory of 4848	400	Transferencia.exe	97
PID 400 wrote to memory of 4848	400	Transferencia.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Transferencia.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Transferencia.exe

C:\Users\Admin\AppData\Local\Temp\Transferencia.exe
"C:\Users\Admin\AppData\Local\Temp\Transferencia.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:400
- C:\Users\Admin\AppData\Local\Temp\Transferencia.exe
  "C:\Users\Admin\AppData\Local\Temp\Transferencia.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4848

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Transferencia.exe.log

Filesize
1KB

MD5
765cff098b629b1eb49e3ef981f7001a

SHA1
32b7ade1f746d013371141dcebd96e0bb3faeef3

SHA256
ee17be860e129795491b4be61f5ac446b16f2679e056114024ffc72b2e23a9b7

SHA512
ca2d2ddafc2dcbeab2c93f039bdbc567d4c9e0457e741e71c432b7461a1a8165891f22112ff1b57004ba51271899555fbf001db17d2dc748bafc608817bd9474

Download Submit
memory/400-147-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/400-134-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/400-136-0x00000000056C0000-0x0000000005752000-memory.dmp

Filesize
584KB

Download
memory/400-133-0x0000000000C90000-0x0000000000D30000-memory.dmp

Filesize
640KB

Download
memory/400-138-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/400-139-0x0000000005AB0000-0x0000000005C56000-memory.dmp

Filesize
1.6MB

Download
memory/400-140-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/400-141-0x00000000056B0000-0x00000000056C0000-memory.dmp

Filesize
64KB

Download
memory/400-135-0x0000000005D30000-0x00000000062D4000-memory.dmp

Filesize
5.6MB

Download
memory/400-142-0x0000000009760000-0x00000000097FC000-memory.dmp

Filesize
624KB

Download
memory/400-137-0x00000000056B0000-0x00000000056C0000-memory.dmp

Filesize
64KB

Download
memory/4848-146-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4848-148-0x0000000005160000-0x0000000005170000-memory.dmp

Filesize
64KB

Download
memory/4848-149-0x00000000050D0000-0x0000000005136000-memory.dmp

Filesize
408KB

Download
memory/4848-143-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4848-152-0x00000000068A0000-0x00000000068F0000-memory.dmp

Filesize
320KB

Download
memory/4848-153-0x0000000006AC0000-0x0000000006C82000-memory.dmp

Filesize
1.8MB

Download
memory/4848-163-0x0000000074990000-0x0000000075140000-memory.dmp

Filesize
7.7MB

Download
memory/4848-164-0x0000000005160000-0x0000000005170000-memory.dmp

Filesize
64KB

Download

Analysis

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