agenttesla | 4550cd933a3377cb684ee448c73853dc7d82f86df263ba5f083b4bed4decfa18

General

Target

ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe
Size

1.1MB
MD5

ee82bea74fa995a39492f062a1da1cc4
SHA1

7a9d96de8c29b0f87c739be457f5aff323c03396
SHA256

4550cd933a3377cb684ee448c73853dc7d82f86df263ba5f083b4bed4decfa18
SHA512

58c1fb6f16501c8497f57d03491c649525fbbc2143fe10ca234f6487d894b2da6707586e92524db670a60b4ab8603d55e28ad105a21983fbc578f76c292c9d4f
SSDEEP

24576:CzCoX21X9T6+DEqSP7V65esk2qBoRBb7/59IPIrfAZxNmfCda:CzC46tTFDKPk5826OBb7/5CPlxNmfua

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
OSINACHI3116

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

AgentTesla payload 3 IoCs

resource	yara_rule
behavioral1/memory/2736-4-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/2736-9-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/2736-7-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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
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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2488 set thread context of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30

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	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2736	RegAsm.exe
2736	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2736	2488	ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ee82bea74fa995a39492f062a1da1cc4_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2488
- 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
  - outlook_office_path
  - outlook_win_path
  PID:2736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/2488-0-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

Filesize
4KB

Download
memory/2488-1-0x0000000000C10000-0x0000000000D2E000-memory.dmp

Filesize
1.1MB

Download
memory/2488-2-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2488-3-0x0000000004F40000-0x0000000004FAE000-memory.dmp

Filesize
440KB

Download
memory/2488-6-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2488-10-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2736-4-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2736-9-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2736-7-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download

Analysis

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