agenttesla | 15ba183b782c806b2742664a3fe1b6a518924f0fe00b85998bedd8b482bffe79

General

Target

fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe
Size

1.7MB
MD5

fd3bd4dfd5a67c2d68cc1662e7a1fdaf
SHA1

3122043ac1466088e802076b5b373db8ff8f9717
SHA256

15ba183b782c806b2742664a3fe1b6a518924f0fe00b85998bedd8b482bffe79
SHA512

a01f1ddbfca185cff5d25cee1b603fd54314c1a3f831d7de6f306f56b3e227ab6a6cbdefadca3c40033a99adad7783fbb2e90354e681ddd8ba98c06ed57a883e
SSDEEP

49152:ch+ZkldoPKi2a/ahuVrk4LzEXD86ZD7XitbckPZ:N2cPKiJVo+Iw6ZD7uc2

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
GRACE12345

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/1552-2-0x0000000000400000-0x000000000044C000-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 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-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FtnscDnJ = "C:\\Users\\Admin\\AppData\\Roaming\\Cyllbul\\IvoZC.exe"	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2464 set thread context of 1552	2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe	82

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	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1552	RegAsm.exe
1552	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1552	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe
2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe
2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe
2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe
2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1552	RegAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 1552	2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe	82
PID 2464 wrote to memory of 1552	2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe	82
PID 2464 wrote to memory of 1552	2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe	82
PID 2464 wrote to memory of 1552	2464	fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd3bd4dfd5a67c2d68cc1662e7a1fdaf_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2464
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1552

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/1552-2-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1552-3-0x0000000074EA2000-0x0000000074EA3000-memory.dmp

Filesize
4KB

Download
memory/1552-4-0x0000000074EA0000-0x0000000075451000-memory.dmp

Filesize
5.7MB

Download
memory/1552-5-0x0000000074EA0000-0x0000000075451000-memory.dmp

Filesize
5.7MB

Download
memory/1552-6-0x0000000074EA2000-0x0000000074EA3000-memory.dmp

Filesize
4KB

Download
memory/1552-7-0x0000000074EA0000-0x0000000075451000-memory.dmp

Filesize
5.7MB

Download
memory/2464-0-0x0000000003D90000-0x0000000003E1E000-memory.dmp

Filesize
568KB

Download
memory/2464-1-0x0000000005430000-0x00000000054BE000-memory.dmp

Filesize
568KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads