agenttesla | bfa9a0bab235b2a77b36a878df785df6290165fc4eb1ee7b1ecac17301f16d4d

General

Target

W393sInoO0lETwy.exe
Size

453KB
MD5

05bc8cd5ac88000ae8a77b04ec1535f7
SHA1

de8fcc855cae15e96bc11064cec6c605db173f6c
SHA256

bfa9a0bab235b2a77b36a878df785df6290165fc4eb1ee7b1ecac17301f16d4d
SHA512

104002f2e60012e1a378fe06dd57a19e34bf43383a87f0a8a9e9544e61a5af12beebd0b19d5593f80aa5ee2197fda1b85b863beafdbd9eb61bdbdfb34f3913c5

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.lettu.us
Port:
587
Username:
hr@lettu.us
Password:
western2020@

Signatures

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

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1848-2-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1848-3-0x0000000000447C2E-mapping.dmp	family_agenttesla
behavioral1/memory/1848-4-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1848-5-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

W393sInoO0lETwy.exe

description pid process target process

PID 1512 set thread context of 1848 1512 W393sInoO0lETwy.exe W393sInoO0lETwy.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

W393sInoO0lETwy.exe

pid process

1848 W393sInoO0lETwy.exe
1848 W393sInoO0lETwy.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

W393sInoO0lETwy.exe

description pid process

Token: SeDebugPrivilege 1848 W393sInoO0lETwy.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

W393sInoO0lETwy.exe

pid process

1848 W393sInoO0lETwy.exe

description	pid	process	target process
PID 1512 set thread context of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe

pid	process
1848	W393sInoO0lETwy.exe
1848	W393sInoO0lETwy.exe

description	pid	process
Token: SeDebugPrivilege	1848	W393sInoO0lETwy.exe

pid	process
1848	W393sInoO0lETwy.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

W393sInoO0lETwy.exe

description	pid	process	target process
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe
PID 1512 wrote to memory of 1848	1512	W393sInoO0lETwy.exe	W393sInoO0lETwy.exe

C:\Users\Admin\AppData\Local\Temp\W393sInoO0lETwy.exe
"C:\Users\Admin\AppData\Local\Temp\W393sInoO0lETwy.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1512

C:\Users\Admin\AppData\Local\Temp\W393sInoO0lETwy.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1848

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1512-1-0x0000000000000000-0x0000000000000000-disk.dmp

Download
memory/1848-2-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1848-3-0x0000000000447C2E-mapping.dmp

Download
memory/1848-4-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1848-5-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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