agenttesla | 39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be

General

Target

39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe
Size

1.3MB
MD5

3eefac0ac4debdfa45f3ea5b9b003022
SHA1

ab0f47cd58b54d235deb92c55acbf0e34d605916
SHA256

39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be
SHA512

b61c9b6c7dcf21da4869cc7ce75088a381c8db7c22fa675969ac0b78b0ac8bc728725ce07c35af7c1ab71aa6d144d43f82a8bfb341553dcebdab728c7d76a24e
SSDEEP

24576:IFOudyObqWcuAA0EHJbdRRv1RIAhjLoamMiX4lNmZg0YxegPbUIDPP:3O+eSijLoyEkmZ9Y14

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.maviksel.com
Port:
587
Username:
[email protected]
Password:
Ravi/1970
Email To:
[email protected]

Signatures

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.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 3 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

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1100 set thread context of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30

System Location Discovery: System Language Discovery 1 TTPs 2 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	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1976	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe
1976	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1976	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30
PID 1100 wrote to memory of 1976	1100	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe

C:\Users\Admin\AppData\Local\Temp\39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe
"C:\Users\Admin\AppData\Local\Temp\39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1100
- C:\Users\Admin\AppData\Local\Temp\39bf46a3d82dc2ab2a413dbc199ac3eb1c15014ad8c3171d2efc6af9c409d0be.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1100-0-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/1100-1-0x00000000002A0000-0x00000000003EE000-memory.dmp

Filesize
1.3MB

Download
memory/1100-2-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/1100-3-0x0000000000240000-0x000000000024A000-memory.dmp

Filesize
40KB

Download
memory/1100-4-0x000000007490E000-0x000000007490F000-memory.dmp

Filesize
4KB

Download
memory/1100-5-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/1100-6-0x00000000052C0000-0x0000000005346000-memory.dmp

Filesize
536KB

Download
memory/1100-7-0x00000000006D0000-0x000000000070A000-memory.dmp

Filesize
232KB

Download
memory/1100-23-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/1976-18-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1976-14-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1976-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1976-12-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1976-10-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1976-22-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1976-20-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1976-8-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1976-24-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/1976-25-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/1976-27-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download
memory/1976-28-0x0000000074900000-0x0000000074FEE000-memory.dmp

Filesize
6.9MB

Download

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