agenttesla | db3b9bd7d52e0d20154b8e928b0864b84e938b2ca5984cb83b2e2f51b6eec06e

General

Target

osasuna.exe
Size

1.0MB
MD5

b6df5864fc6fa87ba731b8986ae5a352
SHA1

ba0315e91c131f87c832f2210239a19e802f32b9
SHA256

757f7141daf24169ff3694cdf0247b7ce0b71c66a970837a71149a69b5b6d371
SHA512

341f893f68cae0254576194cbc923b09d583b304f5c9132877c489e97fffd752eb3e2436ffe33ebf96a8ea979ddd4fbc27660201c6f49ff9341e74a30ce06e5a

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
104osayandex

Signatures

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

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1648-58-0x0000000000390000-0x00000000003E2000-memory.dmp	family_agenttesla
behavioral1/memory/1648-59-0x0000000000390000-0x00000000003E2000-memory.dmp	family_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

Processes:

osasuna.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	osasuna.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	osasuna.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	osasuna.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

osasuna.exe

description pid process target process

PID 1856 set thread context of 1648 1856 osasuna.exe osasuna.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

osasuna.exeosasuna.exe

pid process

1856 osasuna.exe
1648 osasuna.exe
1648 osasuna.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

osasuna.exe

pid process

1856 osasuna.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

osasuna.exe

description pid process

Token: SeDebugPrivilege 1648 osasuna.exe

description	pid	process	target process
PID 1856 set thread context of 1648	1856	osasuna.exe	osasuna.exe

pid	process
1856	osasuna.exe
1648	osasuna.exe
1648	osasuna.exe

pid	process
1856	osasuna.exe

description	pid	process
Token: SeDebugPrivilege	1648	osasuna.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

osasuna.exeosasuna.exe

description	pid	process	target process
PID 1856 wrote to memory of 1648	1856	osasuna.exe	osasuna.exe
PID 1856 wrote to memory of 1648	1856	osasuna.exe	osasuna.exe
PID 1856 wrote to memory of 1648	1856	osasuna.exe	osasuna.exe
PID 1856 wrote to memory of 1648	1856	osasuna.exe	osasuna.exe
PID 1648 wrote to memory of 604	1648	osasuna.exe	netsh.exe
PID 1648 wrote to memory of 604	1648	osasuna.exe	netsh.exe
PID 1648 wrote to memory of 604	1648	osasuna.exe	netsh.exe
PID 1648 wrote to memory of 604	1648	osasuna.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

osasuna.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	osasuna.exe

outlook_win_path 1 IoCs

Processes:

osasuna.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	osasuna.exe

C:\Users\Admin\AppData\Local\Temp\osasuna.exe
"C:\Users\Admin\AppData\Local\Temp\osasuna.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1856

C:\Users\Admin\AppData\Local\Temp\osasuna.exe
"C:\Users\Admin\AppData\Local\Temp\osasuna.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1648

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:604

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

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/604-62-0x0000000000000000-mapping.dmp

Download
memory/1648-57-0x00000000004AEE10-mapping.dmp

Download
memory/1648-58-0x0000000000390000-0x00000000003E2000-memory.dmp

Filesize
328KB

Download
memory/1648-59-0x0000000000390000-0x00000000003E2000-memory.dmp

Filesize
328KB

Download
memory/1648-61-0x0000000074180000-0x000000007472B000-memory.dmp

Filesize
5.7MB

Download
memory/1856-54-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

Filesize
8KB

Download
memory/1856-56-0x0000000000390000-0x00000000003A2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads