agenttesla | 6d3a01714c17f25c4391e3b367e96841d18d13f511638cb70d733c88a6699c52

General

Target

JHbHh87.exe
Size

779KB
MD5

16db9460a6f56523692ac4d59769c09d
SHA1

7a3803147ecdc2ca799cf774e5b67747b793c3a5
SHA256

6d3a01714c17f25c4391e3b367e96841d18d13f511638cb70d733c88a6699c52
SHA512

afe0b9388759ec4eebbd3e80709d30a8b01a0cad183b0100021450fb8135acf28a5eba734eaf5234659f0710b9a910b36bf535edb7dc3b5ecd89d4118a048f81
SSDEEP

12288:wRKE9RpGvG6iA7nMGeKaq6IrH+NV39+BT+4PMfdWg8bDdyb55/H12v:4KE0vG+DMGeVviGUTMfdWg88bB

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://discord.com/api/webhooks/1102628938297126932/VXo1d4QPT7EK07KTUTuQS7U_mKjmgq8stDCniUJH2kE2FO4XTxFLPNZl3UiI_GL_VhUD

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
4	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1740 set thread context of 2796	1740	JHbHh87.exe	31

System Location Discovery: System Language Discovery 1 TTPs 1 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	caspol.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2796	caspol.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2796	caspol.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31
PID 1740 wrote to memory of 2796	1740	JHbHh87.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	caspol.exe

C:\Users\Admin\AppData\Local\Temp\JHbHh87.exe
"C:\Users\Admin\AppData\Local\Temp\JHbHh87.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2796

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

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1740-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp

Filesize
4KB

Download
memory/1740-1-0x00000000013A0000-0x0000000001464000-memory.dmp

Filesize
784KB

Download
memory/1740-2-0x0000000000540000-0x0000000000550000-memory.dmp

Filesize
64KB

Download
memory/1740-3-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/1740-15-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2796-7-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2796-9-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2796-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-11-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2796-6-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2796-5-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2796-4-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2796-14-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2796-13-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2796-16-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/2796-17-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

Filesize
4KB

Download
memory/2796-18-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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