agenttesla | 5f1062d2bb1b46b2ad72e7bc0e14c1b5a317a1b941a59ee7dc15ba27afe880ee

General

Target

AIT#435543.exe
Size

604KB
MD5

08a8436f9dd4d72ac7545adcd2176849
SHA1

31b625388d14f4cdc6a6d1fcfbf302076f7be507
SHA256

5f1062d2bb1b46b2ad72e7bc0e14c1b5a317a1b941a59ee7dc15ba27afe880ee
SHA512

c30720a6182c11432757946e93964543103506cf43580614684f873b9f4f2581bd8e54b8a8cba2ac7681f6514fc54f5bae4d4ec3680b4dbe27e2d56bf20351a2
SSDEEP

12288:MNaWonQ3fR/mOvYUG3eqdWdoiiQXyJyxVkKs12I:WzoyeONGuqdWGiiXyxY12I

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.chestronics.com
Port:
587
Username:
[email protected]
Password:
]DV(A,K%8op6
Email To:
[email protected]

Signatures

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

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3891603265-141683679-4067940827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AIT#435543.exe
Key opened	\REGISTRY\USER\S-1-5-21-3891603265-141683679-4067940827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AIT#435543.exe
Key opened	\REGISTRY\USER\S-1-5-21-3891603265-141683679-4067940827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AIT#435543.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 2664 set thread context of 1464	2664	AIT#435543.exe	29

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1464	AIT#435543.exe
1464	AIT#435543.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1464	AIT#435543.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29
PID 2664 wrote to memory of 1464	2664	AIT#435543.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3891603265-141683679-4067940827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AIT#435543.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3891603265-141683679-4067940827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AIT#435543.exe

C:\Users\Admin\AppData\Local\Temp\AIT#435543.exe
"C:\Users\Admin\AppData\Local\Temp\AIT#435543.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2664
- C:\Users\Admin\AppData\Local\Temp\AIT#435543.exe
  "C:\Users\Admin\AppData\Local\Temp\AIT#435543.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1464

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1464-67-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1464-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1464-71-0x0000000001FE0000-0x0000000002020000-memory.dmp

Filesize
256KB

Download
memory/1464-70-0x0000000001FE0000-0x0000000002020000-memory.dmp

Filesize
256KB

Download
memory/1464-69-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1464-65-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1464-60-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1464-63-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1464-61-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1464-62-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2664-55-0x00000000045D0000-0x0000000004610000-memory.dmp

Filesize
256KB

Download
memory/2664-59-0x00000000056E0000-0x000000000574A000-memory.dmp

Filesize
424KB

Download
memory/2664-54-0x0000000000B10000-0x0000000000BAE000-memory.dmp

Filesize
632KB

Download
memory/2664-58-0x00000000004F0000-0x00000000004FC000-memory.dmp

Filesize
48KB

Download
memory/2664-57-0x00000000045D0000-0x0000000004610000-memory.dmp

Filesize
256KB

Download
memory/2664-56-0x00000000002F0000-0x00000000002FC000-memory.dmp

Filesize
48KB

Download

Analysis

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