agenttesla | 3f38db6f8face25f64fddbfac410fd9e98414de41ae78f7b5da00de00ea06d55

General

Target

Purchase Order_pdf.scr
Size

1.0MB
MD5

77452a813c0f9cceb6a409b8e23d6ed8
SHA1

da681dbb13d90af19ed17ee5e9715f5e34d0dbef
SHA256

673c6269f7b4e5c97dcfb85ca5b920667125f8e3489b34e3a0960f0456cb4851
SHA512

c3b814dd1e0b9857438c8a3bc70eed793fe36b265f90ea3f192a831ae9915d93b80edfe5ad33e63d98597756af66113f80ea48d88b74933e7d8f2bc6c6a269ef
SSDEEP

12288:q26YCaL0/TbBktszrqSldYgm8rbBvQNExDas66yFOoOMiJKybiyIy:36naABk+qSwgm8rbBvSEpXwOoOUyuy

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.ru
Port:
587
Username:
[email protected]
Password:
tonyelo000@

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/3532-16-0x0000000008CA0000-0x0000000008CFA000-memory.dmp	family_agenttesla

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Purchase Order_pdf.scr

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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order_pdf.scr
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order_pdf.scr
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order_pdf.scr

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
32	checkip.amazonaws.com

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 2 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	Purchase Order_pdf.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2128	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3532	Purchase Order_pdf.scr
3532	Purchase Order_pdf.scr

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3532	Purchase Order_pdf.scr

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 2128	3532	Purchase Order_pdf.scr	91
PID 3532 wrote to memory of 2128	3532	Purchase Order_pdf.scr	91
PID 3532 wrote to memory of 2128	3532	Purchase Order_pdf.scr	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order_pdf.scr

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order_pdf.scr

C:\Users\Admin\AppData\Local\Temp\Purchase Order_pdf.scr
"C:\Users\Admin\AppData\Local\Temp\Purchase Order_pdf.scr" /S
1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:3532
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\csAWsUundniDo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7105.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7105.tmp

Filesize
1KB

MD5
ca64d650c2ac499a56808ce3c5f11485

SHA1
06db2a4775eb0ba75750e570a3e241f2084e51b4

SHA256
8567778eeeb1d74029ee3f5c93696e2951347fc8810601dcdbcf5a5a008e47dc

SHA512
9be9c2e8c1a39cb9aa560d5092c495f1c77e956610bba08baaf03b693c53f9eb129b5cd7905d6f183d9ef6f3fed62023677670f34c696bfec58a67152f89d3a7

Download Submit
memory/3532-8-0x00000000750AE000-0x00000000750AF000-memory.dmp

Filesize
4KB

Download
memory/3532-3-0x0000000004FF0000-0x0000000005082000-memory.dmp

Filesize
584KB

Download
memory/3532-10-0x0000000008350000-0x00000000083B6000-memory.dmp

Filesize
408KB

Download
memory/3532-1-0x00000000004E0000-0x00000000005EC000-memory.dmp

Filesize
1.0MB

Download
memory/3532-5-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3532-6-0x0000000004FE0000-0x0000000004FEA000-memory.dmp

Filesize
40KB

Download
memory/3532-7-0x0000000005480000-0x00000000054EE000-memory.dmp

Filesize
440KB

Download
memory/3532-0-0x00000000750AE000-0x00000000750AF000-memory.dmp

Filesize
4KB

Download
memory/3532-26-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3532-2-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/3532-4-0x00000000053C0000-0x000000000545C000-memory.dmp

Filesize
624KB

Download
memory/3532-16-0x0000000008CA0000-0x0000000008CFA000-memory.dmp

Filesize
360KB

Download
memory/3532-17-0x00000000028E0000-0x00000000028F8000-memory.dmp

Filesize
96KB

Download
memory/3532-18-0x0000000009030000-0x000000000903A000-memory.dmp

Filesize
40KB

Download
memory/3532-19-0x0000000009A70000-0x0000000009AC0000-memory.dmp

Filesize
320KB

Download
memory/3532-24-0x0000000009CF0000-0x0000000009CFA000-memory.dmp

Filesize
40KB

Download
memory/3532-25-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download
memory/3532-9-0x00000000750A0000-0x0000000075850000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads