agenttesla | 5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967

General

Target

a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe
Size

1.5MB
MD5

a623c92ea533fdec00aa1f99c724fe0a
SHA1

1c641a709f29a420a07dc6497e5660b040ab79a7
SHA256

5b96fbaf2bc4c8b449e1bbb30efa5152ff1565a924ae759f10223f8869e21967
SHA512

e96e4d50db8d96454948f001473c2e9bfde265234e1591a6e874fba48b866aedda17ad481ae5c4e9edd3e5e6590f1dbf6a9a945e68fce4ef662c03e02b4e78da
SSDEEP

24576:Bu6Jx3O0c+JY5UZ+XC0kGso/Wa+7dwNCFxie5my7wWY:TI0c++OCvkGsUWaWFPY

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
aFsO$W)7

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/3428-3-0x0000000000400000-0x000000000044C000-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 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-1-5-21-4204450073-1267028356-951339405-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\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-1-5-21-4204450073-1267028356-951339405-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\firefox = "C:\\Users\\Admin\\AppData\\Roaming\\firefox\\firefox.exe"	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2592 set thread context of 3428	2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe	84

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3428	RegAsm.exe
3428	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3428	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe
2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe
2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe
2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe
2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 3428	2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe	84
PID 2592 wrote to memory of 3428	2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe	84
PID 2592 wrote to memory of 3428	2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe	84
PID 2592 wrote to memory of 3428	2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe	84
PID 2592 wrote to memory of 3428	2592	a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a623c92ea533fdec00aa1f99c724fe0a_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2592
- 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
  - outlook_office_path
  - outlook_win_path
  PID:3428

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

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2592-0-0x00000000038D0000-0x0000000003917000-memory.dmp

Filesize
284KB

Download
memory/2592-1-0x0000000003920000-0x0000000003921000-memory.dmp

Filesize
4KB

Download
memory/3428-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3428-7-0x0000000074B12000-0x0000000074B13000-memory.dmp

Filesize
4KB

Download
memory/3428-8-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3428-9-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3428-12-0x0000000074B12000-0x0000000074B13000-memory.dmp

Filesize
4KB

Download
memory/3428-13-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads