agenttesla | b653369d65923416167ddd72e78411fed77a2b7be24bf6c1eba06512a232594a

General

Target

tmp5inh3zk1.exe
Size

733KB
MD5

c80a6ab88197ae041f37e89de88c432c
SHA1

2ff5a4f5d4c598e910a331e04dcc17a6a8c0cd82
SHA256

b653369d65923416167ddd72e78411fed77a2b7be24bf6c1eba06512a232594a
SHA512

7892a721f51a7d686129638ee47c4f7f15cdaaa221004cb4a52fde29111c44aac03b3a7dcc3044ae624f07870cedc00cc0e884e1801432d6bb9e6511acc0cdb9
SSDEEP

12288:+L7WTG4meL6865A0phF2/lDHwu+yIlohn+9T5FfbsCsaYbRu:MSTVh6RNQIlo03NsCTIR

Score

10^/10

agenttesla discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.bonnyriggdentalsurgery.com.au
Port:
587
Username:
[email protected]
Password:
eL)rV@QBKA#m
Email To:
[email protected]

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2824	powershell.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

Looks up external IP address via web service 3 IoCs

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

flow	ioc
2	api.ipify.org
3	api.ipify.org
4	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 2836	2344	tmp5inh3zk1.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	tmp5inh3zk1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmp5inh3zk1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2836	tmp5inh3zk1.exe
2836	tmp5inh3zk1.exe
2824	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2836	tmp5inh3zk1.exe
Token: SeDebugPrivilege	2824	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2824	2344	tmp5inh3zk1.exe	30
PID 2344 wrote to memory of 2824	2344	tmp5inh3zk1.exe	30
PID 2344 wrote to memory of 2824	2344	tmp5inh3zk1.exe	30
PID 2344 wrote to memory of 2824	2344	tmp5inh3zk1.exe	30
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31
PID 2344 wrote to memory of 2836	2344	tmp5inh3zk1.exe	31

C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe
"C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2344-0-0x000000007436E000-0x000000007436F000-memory.dmp

Filesize
4KB

Download
memory/2344-1-0x0000000001180000-0x000000000123E000-memory.dmp

Filesize
760KB

Download
memory/2344-2-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-3-0x0000000000A50000-0x0000000000A6A000-memory.dmp

Filesize
104KB

Download
memory/2344-4-0x000000007436E000-0x000000007436F000-memory.dmp

Filesize
4KB

Download
memory/2344-5-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-6-0x0000000005150000-0x00000000051D4000-memory.dmp

Filesize
528KB

Download
memory/2344-25-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2836-19-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2836-17-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2836-8-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2836-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2836-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2836-11-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2836-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2836-24-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2836-23-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download
memory/2836-22-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2836-28-0x0000000074360000-0x0000000074A4E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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