agenttesla | 90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658

General

Target

90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe
Size

1.5MB
MD5

9514c4132fbe194c4ae5ce0113703f78
SHA1

3911da4089531677b83e1c5ad690449040c7c324
SHA256

90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658
SHA512

3b267ca3a06a8c9e737742bd5fbdea26fb7520a9ebb1c260e873d3d40daf16907c87ca4e8a42784d33fd8fdf322d17078c835a6c2ae13e3cf8cff5fa5b60af98
SSDEEP

24576:Kln9OjYMsGYCUF3nv1RIAhjLoamMiX4lNmZg0YxegPbUIDPP:Kl9u57UF3hjLoyEkmZ9Y14

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot2134979594:AAFk4QkrlHlt2a-q-EhIoHZBbzxSH0QxiBI/sendDocument

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/1360-13-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

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

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-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4508 set thread context of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89

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	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe
1360	MSBuild.exe
1360	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe
Token: SeDebugPrivilege	1360	MSBuild.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89
PID 4508 wrote to memory of 1360	4508	90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe
"C:\Users\Admin\AppData\Local\Temp\90719bd270486dde2f0b8f22924d10907f8d9e10ec7ba8bbc70e7e3dff5e1658.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1360

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

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/1360-13-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1360-25-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/1360-24-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/1360-23-0x00000000064F0000-0x0000000006540000-memory.dmp

Filesize
320KB

Download
memory/1360-21-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/1360-20-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/1360-19-0x0000000006380000-0x00000000063E6000-memory.dmp

Filesize
408KB

Download
memory/1360-18-0x0000000005600000-0x0000000005618000-memory.dmp

Filesize
96KB

Download
memory/1360-17-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/1360-15-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/4508-6-0x0000000004C40000-0x0000000004C4A000-memory.dmp

Filesize
40KB

Download
memory/4508-7-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/4508-12-0x0000000009000000-0x000000000903C000-memory.dmp

Filesize
240KB

Download
memory/4508-10-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/4508-9-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/4508-16-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/4508-8-0x0000000006780000-0x000000000678A000-memory.dmp

Filesize
40KB

Download
memory/4508-11-0x0000000006AF0000-0x0000000006B76000-memory.dmp

Filesize
536KB

Download
memory/4508-0-0x0000000074BBE000-0x0000000074BBF000-memory.dmp

Filesize
4KB

Download
memory/4508-5-0x0000000074BB0000-0x0000000075360000-memory.dmp

Filesize
7.7MB

Download
memory/4508-4-0x0000000004D20000-0x0000000004DBC000-memory.dmp

Filesize
624KB

Download
memory/4508-3-0x0000000004C80000-0x0000000004D12000-memory.dmp

Filesize
584KB

Download
memory/4508-2-0x0000000005230000-0x00000000057D4000-memory.dmp

Filesize
5.6MB

Download
memory/4508-1-0x00000000000B0000-0x0000000000234000-memory.dmp

Filesize
1.5MB

Download

Analysis

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