agenttesla | 19c520d6ace068b170e6d4c5e977a93eb4093b55b25c70dc184ad7126c710f63

General

Target

9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
Size

1.5MB
MD5

9196e69bca7599cd8e8347c46269cf12
SHA1

388d43005d8cfbb84b05c73f01ced7edcc192d81
SHA256

19c520d6ace068b170e6d4c5e977a93eb4093b55b25c70dc184ad7126c710f63
SHA512

a984bf0ca71ad91a364b325ddc52c1fde3998a60cc8ba61088bf80abb4a145e0c96e4da6cf63340496b726dab7ef0a9d644993873eeb86cc3dd173197b4b1323
SSDEEP

24576:yAHnh+eWsN3skA4RV1Hom2KXMmHa1PKOK23hNrnOLO5:1h+ZkldoPK8Ya1ZO4

Score

10^/10

agenttesla collection 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 12 IoCs

resource	yara_rule
behavioral2/memory/1588-0-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-9-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-25-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-23-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-22-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-20-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-17-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-16-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-14-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-12-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-11-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla
behavioral2/memory/1588-10-0x0000000000400000-0x0000000000460000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

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

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-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MydxApp = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MydxApp\\MydxApp.exe"	RegAsm.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
45	checkip.amazonaws.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4716 set thread context of 1588	4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe	84

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
1588	RegAsm.exe
1588	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1588	RegAsm.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1588	RegAsm.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 1588	4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe	84
PID 4716 wrote to memory of 1588	4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe	84
PID 4716 wrote to memory of 1588	4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe	84
PID 4716 wrote to memory of 1588	4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe	84
PID 4716 wrote to memory of 1588	4716	9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe	84

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9196e69bca7599cd8e8347c46269cf12_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1588

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

Replay Monitor

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Downloads

memory/1588-22-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-17-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-6-0x0000000074BC2000-0x0000000074BC3000-memory.dmp

Filesize
4KB

Download
memory/1588-7-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1588-8-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1588-9-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-25-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-23-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-29-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1588-0-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-20-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-16-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-14-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-12-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-11-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-10-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/1588-28-0x0000000074BC2000-0x0000000074BC3000-memory.dmp

Filesize
4KB

Download
memory/4716-5-0x00000000012E0000-0x00000000012E1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads