agenttesla | b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8

General

Target

b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
Size

1.9MB
MD5

61067fc22c6628fe351a76f6ec19b6da
SHA1

b1be7c51c75a5ddf4864f36bddd2cbb32ea6659c
SHA256

b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8
SHA512

9891db373116baad04cbca1ef266f8e46ced5633f1eeb351c0517ea250d4d67925696481ee8602a9e8a77b5e30aa0939882e2c63e54688aba0c7713f06dd525a
SSDEEP

49152:ah+ZkldoPKi2aNH5Bod+FNNnxv93Y6OqRkLDjH4ly:z2cPKiHB7NNn33YnV3Y

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
send.one.com
Port:
587
Username:
[email protected]
Password:
Ijg2qXIq7^.u

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
send.one.com
Port:
587
Username:
[email protected]
Password:
Ijg2qXIq7^.u

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/1556-5-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\netbtugc.url	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.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
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 2 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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Software\Microsoft\Office\16.0\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-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UoOfbM = "C:\\Users\\Admin\\AppData\\Local\\Temp\\UoOfbM\\UoOfbM.exe"	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 628 set thread context of 1556	628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe	83

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
1556	RegAsm.exe
1556	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1556	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1556	RegAsm.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 1556	628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe	83
PID 628 wrote to memory of 1556	628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe	83
PID 628 wrote to memory of 1556	628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe	83
PID 628 wrote to memory of 1556	628	b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe	83
PID 1556 wrote to memory of 1764	1556	RegAsm.exe	91
PID 1556 wrote to memory of 1764	1556	RegAsm.exe	91
PID 1556 wrote to memory of 1764	1556	RegAsm.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe
"C:\Users\Admin\AppData\Local\Temp\b764867253a7800f4b0a1ee1fbce93dc54e2e60a23b14b0ae1562af2042c53b8.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:1556
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:1764

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

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/628-3-0x0000000001FB0000-0x0000000002043000-memory.dmp

Filesize
588KB

Download
memory/628-4-0x0000000006220000-0x00000000062B3000-memory.dmp

Filesize
588KB

Download
memory/1556-5-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1556-6-0x0000000073FC0000-0x0000000074571000-memory.dmp

Filesize
5.7MB

Download
memory/1556-7-0x00000000026C0000-0x00000000026D0000-memory.dmp

Filesize
64KB

Download
memory/1556-8-0x0000000073FC0000-0x0000000074571000-memory.dmp

Filesize
5.7MB

Download
memory/1556-11-0x0000000073FC0000-0x0000000074571000-memory.dmp

Filesize
5.7MB

Download
memory/1556-12-0x00000000026C0000-0x00000000026D0000-memory.dmp

Filesize
64KB

Download
memory/1556-13-0x0000000073FC0000-0x0000000074571000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads