agenttesla | b5cd58d509b54339937f39448e339708217445332f265a1e9ac7f42eb67656fe

General

Target
purchase orders.exe
Size 488KB
Sample211021-naxbpsbafj
SHA256 fdd016077ae901b6249b71415d30c134ff7c7a44e00c2e78027d2537ac9be019
MD5 2c2d3105123454cc637f36f4d87538ef
SHA1 2548b73e24f969c2fb9d780683c3f573e265a451
SHA512 a7fdb428c7f7cde14a7509c61db2204a315cf7200e3545d4777564c27f2f887cce0ffbaffc2887f60ccdb99e2bb02d5882ca3a58933c9ea9bc81110cdff69c63
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.diva-italia.com
Port
587
Username
[email protected]
Password
rr.@%5LjgLz7

Signatures

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

AgentTesla Payload 3 IoCs

resource	yara_rule
behavioral2/memory/752-125-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/752-126-0x000000000043761E-mapping.dmp	family_agenttesla
behavioral2/memory/752-132-0x0000000005410000-0x000000000590E000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	purchase orders.exe

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-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase orders.exe
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase orders.exe
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase orders.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\kprUEGC = "C:\\Users\\Admin\\AppData\\Roaming\\kprUEGC\\kprUEGC.exe"	purchase orders.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2744 set thread context of 752	2744	purchase orders.exe	70

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2744	purchase orders.exe
2744	purchase orders.exe
2744	purchase orders.exe
752	purchase orders.exe
752	purchase orders.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	purchase orders.exe
Token: SeDebugPrivilege	752	purchase orders.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2992	2744	purchase orders.exe	69
PID 2744 wrote to memory of 2992	2744	purchase orders.exe	69
PID 2744 wrote to memory of 2992	2744	purchase orders.exe	69
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70
PID 2744 wrote to memory of 752	2744	purchase orders.exe	70

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase orders.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase orders.exe

C:\Users\Admin\AppData\Local\Temp\purchase orders.exe
"C:\Users\Admin\AppData\Local\Temp\purchase orders.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LErShFWgvWWU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp88C4.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2992
- C:\Users\Admin\AppData\Local\Temp\purchase orders.exe
  "C:\Users\Admin\AppData\Local\Temp\purchase orders.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:752