agenttesla | fced8c6f880f8cdab3677e1a7880b9f88ff229e3125a1de322442a1184017e78

General

Target

zEuzkJPHHV3KYua.exe
Size

750KB
MD5

1b4a6383c2a9b4fd9d1c2ba270800a49
SHA1

ae5c4b7b0a37b4d1c8b65d13417257b29cd2188e
SHA256

cd60ea86b574b6b511ce6a6aff1314ce71b1953e169792e3e76a36913e85ea23
SHA512

7374bff7a913c972156a802096c57b91be8072362dc150dfb0e0e6ad3c0808774a029f1f98f0004c86b0d4b2b76e95fce6811579b67c03cc15f5bee1b004ce6b
SSDEEP

12288:Wq3wtfRzxWW8wNaTP+/CsM/b63zsWhvb2QlT1u3UqOsOJZUowJ9oIfSF:WqMpzxWnXPWCsM/bCXhvSQ3JZUjwIfS

Score

10^/10

agenttesla discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.apexrnun.com
Port:
587
Username:
[email protected]
Password:
%qroUozO;(C2Rlyb
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

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
2168	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 1 IoCs

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

flow	ioc
4	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2552 set thread context of 2320	2552	zEuzkJPHHV3KYua.exe	32

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	zEuzkJPHHV3KYua.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zEuzkJPHHV3KYua.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2320	zEuzkJPHHV3KYua.exe
2320	zEuzkJPHHV3KYua.exe
2168	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2320	zEuzkJPHHV3KYua.exe
Token: SeDebugPrivilege	2168	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 2168	2552	zEuzkJPHHV3KYua.exe	31
PID 2552 wrote to memory of 2168	2552	zEuzkJPHHV3KYua.exe	31
PID 2552 wrote to memory of 2168	2552	zEuzkJPHHV3KYua.exe	31
PID 2552 wrote to memory of 2168	2552	zEuzkJPHHV3KYua.exe	31
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32
PID 2552 wrote to memory of 2320	2552	zEuzkJPHHV3KYua.exe	32

C:\Users\Admin\AppData\Local\Temp\zEuzkJPHHV3KYua.exe
"C:\Users\Admin\AppData\Local\Temp\zEuzkJPHHV3KYua.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552
- 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\zEuzkJPHHV3KYua.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2168
- C:\Users\Admin\AppData\Local\Temp\zEuzkJPHHV3KYua.exe
  "C:\Users\Admin\AppData\Local\Temp\zEuzkJPHHV3KYua.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2320

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

Loading Replay Monitor...

Downloads

memory/2320-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2320-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2320-17-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2320-15-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2320-6-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2320-18-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2320-9-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2320-8-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2320-23-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2320-20-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2320-10-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2552-5-0x0000000005150000-0x00000000051D6000-memory.dmp

Filesize
536KB

Download
memory/2552-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2552-3-0x00000000003D0000-0x00000000003E2000-memory.dmp

Filesize
72KB

Download
memory/2552-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2552-19-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2552-1-0x0000000000A90000-0x0000000000B52000-memory.dmp

Filesize
776KB

Download
memory/2552-4-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing