agenttesla | 0365a5f4a30b1f0e838983474e729f9710f4058335ce736046c60ae0bee6e302

General

Target

AWB-7739-993882-0009-439-110919-6822.pdf.exe
Size

766KB
MD5

d90d0ffa2439b4d0af69d918acb80ee5
SHA1

e565c6ac33eef8bf1a742cc269834faccda56cc2
SHA256

b19763cc6a96371126592c98940902723c2093c11df61475f3e405cf66bde9e1
SHA512

51c483e4110fdbe9f329bd1097cc7dfd5da61d8d9dab5b8466bd2218d3e716cabd15f455a6d1f73e87a0aef2927d54709e6b93e96d27a0f34dbf4bd435b6afd5
SSDEEP

12288:EbEMsl5pPgmnAeoM702ihQWJH9uUO+n57Zq8lB1UlQOO3+U:EbEMvmnLjyMUO+n5tFBmlQOO

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

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/2308-7-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

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-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\nljkB = "C:\\Users\\Admin\\AppData\\Roaming\\nljkBB\\WinDriv.url"	AWB-7739-993882-0009-439-110919-6822.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 996 set thread context of 2308	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	83

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	AWB-7739-993882-0009-439-110919-6822.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2308	RegAsm.exe
2308	RegAsm.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
996	AWB-7739-993882-0009-439-110919-6822.pdf.exe
996	AWB-7739-993882-0009-439-110919-6822.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2308	RegAsm.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 2152	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	82
PID 996 wrote to memory of 2152	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	82
PID 996 wrote to memory of 2152	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	82
PID 996 wrote to memory of 2308	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	83
PID 996 wrote to memory of 2308	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	83
PID 996 wrote to memory of 2308	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	83
PID 996 wrote to memory of 2308	996	AWB-7739-993882-0009-439-110919-6822.pdf.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\AWB-7739-993882-0009-439-110919-6822.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\AWB-7739-993882-0009-439-110919-6822.pdf.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:996
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RegAsm.exe"
  2⤵
  PID:2152
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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

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

memory/996-11-0x0000000074B00000-0x00000000750B1000-memory.dmp

Filesize
5.7MB

Download
memory/996-1-0x0000000074B00000-0x00000000750B1000-memory.dmp

Filesize
5.7MB

Download
memory/996-2-0x0000000074B00000-0x00000000750B1000-memory.dmp

Filesize
5.7MB

Download
memory/996-3-0x0000000074B00000-0x00000000750B1000-memory.dmp

Filesize
5.7MB

Download
memory/996-5-0x0000000074B00000-0x00000000750B1000-memory.dmp

Filesize
5.7MB

Download
memory/996-4-0x0000000074B02000-0x0000000074B03000-memory.dmp

Filesize
4KB

Download
memory/996-6-0x0000000074B00000-0x00000000750B1000-memory.dmp

Filesize
5.7MB

Download
memory/996-0-0x0000000074B02000-0x0000000074B03000-memory.dmp

Filesize
4KB

Download
memory/2308-13-0x0000000005530000-0x00000000055C2000-memory.dmp

Filesize
584KB

Download
memory/2308-12-0x00000000721FE000-0x00000000721FF000-memory.dmp

Filesize
4KB

Download
memory/2308-7-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/2308-14-0x0000000005E40000-0x00000000063E4000-memory.dmp

Filesize
5.6MB

Download
memory/2308-15-0x00000000721F0000-0x00000000729A0000-memory.dmp

Filesize
7.7MB

Download
memory/2308-16-0x00000000057B0000-0x000000000584C000-memory.dmp

Filesize
624KB

Download
memory/2308-17-0x0000000005790000-0x00000000057A8000-memory.dmp

Filesize
96KB

Download
memory/2308-18-0x0000000005D80000-0x0000000005DE6000-memory.dmp

Filesize
408KB

Download
memory/2308-19-0x00000000721FE000-0x00000000721FF000-memory.dmp

Filesize
4KB

Download
memory/2308-20-0x00000000721F0000-0x00000000729A0000-memory.dmp

Filesize
7.7MB

Download
memory/2308-21-0x0000000005D60000-0x0000000005D6A000-memory.dmp

Filesize
40KB

Download
memory/2308-22-0x0000000006DE0000-0x0000000006E30000-memory.dmp

Filesize
320KB

Download
memory/2308-23-0x0000000006E90000-0x0000000006E9A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads