agenttesla | 33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23

General

Target

33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe
Size

1.3MB
MD5

3a5d6126fc6f8eb2a4120964d61c59db
SHA1

faf50512b6898bf7bd01483dbe275afbcc2e8c2d
SHA256

33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23
SHA512

445d0ffaa74c7456d7ee77a18f03c67fcaa936a4840272daec3765a28b86371f6268679c77cfe9022ba598dbc25ab68af2643eb5dc3a9e33d32fbc1219c47760
SSDEEP

24576:OHj1M7H0FpYOyluYcDv1RIAhjLoamMiX4lNmZg0YxegPbUIDPP:O1A0pzxljLoyEkmZ9Y14

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.medicare-equipment.com
Port:
587
Username:
[email protected]
Password:
AllTheBest777
Email To:
[email protected]

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/3756-12-0x0000000000400000-0x000000000043C000-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-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4176 set thread context of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99

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	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3756	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe
3756	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3756	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3756	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99
PID 4176 wrote to memory of 3756	4176	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe	99

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe

C:\Users\Admin\AppData\Local\Temp\33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe
"C:\Users\Admin\AppData\Local\Temp\33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Users\Admin\AppData\Local\Temp\33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe
  "C:\Users\Admin\AppData\Local\Temp\33eac721076c99a55758eae610f5a181346e9b378dc28ff9eb601d7e9ed55c23.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:3756

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

Replay Monitor

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Downloads

memory/3756-12-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/3756-23-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3756-22-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3756-21-0x0000000006C10000-0x0000000006C60000-memory.dmp

Filesize
320KB

Download
memory/3756-20-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3756-19-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3756-18-0x0000000006730000-0x0000000006796000-memory.dmp

Filesize
408KB

Download
memory/3756-17-0x0000000005AA0000-0x0000000005AB8000-memory.dmp

Filesize
96KB

Download
memory/3756-16-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3756-14-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4176-5-0x0000000005630000-0x000000000563A000-memory.dmp

Filesize
40KB

Download
memory/4176-11-0x0000000008660000-0x00000000086D0000-memory.dmp

Filesize
448KB

Download
memory/4176-10-0x0000000008500000-0x000000000859C000-memory.dmp

Filesize
624KB

Download
memory/4176-9-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4176-15-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4176-8-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/4176-7-0x0000000008410000-0x000000000845C000-memory.dmp

Filesize
304KB

Download
memory/4176-6-0x0000000006C50000-0x0000000006C5A000-memory.dmp

Filesize
40KB

Download
memory/4176-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/4176-4-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/4176-3-0x0000000005680000-0x0000000005712000-memory.dmp

Filesize
584KB

Download
memory/4176-2-0x0000000005C30000-0x00000000061D4000-memory.dmp

Filesize
5.6MB

Download
memory/4176-1-0x0000000000AE0000-0x0000000000C36000-memory.dmp

Filesize
1.3MB

Download

Analysis

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