agenttesla | e1051e77a093d4fd5c81b43914bff83dce8662374f1c7e4b3a082ce2094870c0

Analysis

max time kernel
132s
max time network
263s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
01-09-2023 18:07

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General

Target

agent.exe
Size

79KB
MD5

d4cd720a666d79b2ab49106c8a9f36f6
SHA1

9098478ffab34d0d9e334dce3cd1769b86be166b
SHA256

e1051e77a093d4fd5c81b43914bff83dce8662374f1c7e4b3a082ce2094870c0
SHA512

586ef5a136c0d1ab918af6745ad8ab2c922fddff4748a495c5e183c9dae608d0cf3dd7c642b8212e63cdc003f93f64f9b3b19c5250468e699e5c07d1c6f84f61
SSDEEP

768:vljP1pmjALZy6prdO7K+tJpN201s9jmHt8N5zg7de8Aaiqk329ZvUDJK9BHXYpoz:vsuHQelfUAauuVU0TKoLOIrdppmdQ

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.pharmadent.com.uy
Port:
587
Username:
[email protected]
Password:
Pharmadent@2022
Email To:
[email protected]

Signatures

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\chrome = "C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe"	agent.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
21	api.ipify.org
22	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 648 set thread context of 4772	648	agent.exe	80

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4772	MSBuild.exe
4772	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	648	agent.exe
Token: SeDebugPrivilege	4772	MSBuild.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 4772	648	agent.exe	80
PID 648 wrote to memory of 4772	648	agent.exe	80
PID 648 wrote to memory of 4772	648	agent.exe	80
PID 648 wrote to memory of 4772	648	agent.exe	80
PID 648 wrote to memory of 4772	648	agent.exe	80
PID 648 wrote to memory of 4772	648	agent.exe	80
PID 648 wrote to memory of 4772	648	agent.exe	80
PID 648 wrote to memory of 4772	648	agent.exe	80

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2415528079-3794552930-4264847036-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\agent.exe
"C:\Users\Admin\AppData\Local\Temp\agent.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:648
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4772

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:2960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/648-0-0x0000000000510000-0x000000000052A000-memory.dmp

Filesize
104KB

Download
memory/648-1-0x0000000074C50000-0x0000000075400000-memory.dmp

Filesize
7.7MB

Download
memory/648-2-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/648-3-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-4-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-6-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-8-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-10-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-12-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-14-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-16-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-18-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-20-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-22-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-24-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-26-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-28-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-30-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-32-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-34-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-36-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-38-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-40-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-42-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-44-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-46-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-48-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-50-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-52-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-54-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-56-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-58-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-60-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-62-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-64-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-66-0x00000000062F0000-0x00000000063B1000-memory.dmp

Filesize
772KB

Download
memory/648-1054-0x0000000074C50000-0x0000000075400000-memory.dmp

Filesize
7.7MB

Download
memory/648-1080-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/648-1081-0x0000000005850000-0x0000000005851000-memory.dmp

Filesize
4KB

Download
memory/648-1082-0x0000000006F30000-0x00000000074D4000-memory.dmp

Filesize
5.6MB

Download
memory/648-1086-0x0000000074C50000-0x0000000075400000-memory.dmp

Filesize
7.7MB

Download
memory/4772-1087-0x0000000074C50000-0x0000000075400000-memory.dmp

Filesize
7.7MB

Download
memory/4772-1088-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4772-1089-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download
memory/4772-1090-0x0000000005470000-0x00000000054D6000-memory.dmp

Filesize
408KB

Download
memory/4772-1097-0x0000000006840000-0x0000000006890000-memory.dmp

Filesize
320KB

Download
memory/4772-1098-0x0000000006930000-0x00000000069C2000-memory.dmp

Filesize
584KB

Download
memory/4772-1099-0x00000000068D0000-0x00000000068DA000-memory.dmp

Filesize
40KB

Download
memory/4772-1100-0x0000000074C50000-0x0000000075400000-memory.dmp

Filesize
7.7MB

Download
memory/4772-1101-0x0000000005530000-0x0000000005540000-memory.dmp

Filesize
64KB

Download