agenttesla | 29332540c3c2a713bd1462ff5d4f80b679b80f81687c4a2652ccdc25d9dc26f6

General

Target

Openstaande factuur.exe
Size

536KB
MD5

1de145a52d4d62164c4ff3dd5a9705ad
SHA1

1facc670ae58832181eae43331253d30f36122ae
SHA256

93d22d39577ab983c75badd9019b57420a4e2bfc300d6a37d90885d823396058
SHA512

8f3930501aa2a7c147830a77f3683c7e348a3ec5f0d925b9ab4c15df0988cbc0e6b1f22920fd0f8188d1bda992fe0cfcb9fc4260ab8222b8b8dd425e7c488b94
SSDEEP

12288:8Eav2zv1gaG1SDq7+NUwUeMB2y4nyGlNrzVWfZb:R92aGqScqsZHr5Wx

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.gascuenca.es
Port:
587
Username:
[email protected]
Password:
gasW204@Z7
Email To:
[email protected]

Signatures

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

AgentTesla payload 5 IoCs

resource	yara_rule
behavioral1/memory/2920-15-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2920-19-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2920-17-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2920-12-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2920-11-0x0000000000400000-0x000000000043C000-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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Openstaande factuur.exe
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Openstaande factuur.exe
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Openstaande factuur.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2360 set thread context of 2920	2360	Openstaande factuur.exe	32

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	Openstaande factuur.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Openstaande factuur.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2360	Openstaande factuur.exe
2360	Openstaande factuur.exe
2920	Openstaande factuur.exe
2920	Openstaande factuur.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2360	Openstaande factuur.exe
Token: SeDebugPrivilege	2920	Openstaande factuur.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2620	2360	Openstaande factuur.exe	31
PID 2360 wrote to memory of 2620	2360	Openstaande factuur.exe	31
PID 2360 wrote to memory of 2620	2360	Openstaande factuur.exe	31
PID 2360 wrote to memory of 2620	2360	Openstaande factuur.exe	31
PID 2360 wrote to memory of 2620	2360	Openstaande factuur.exe	31
PID 2360 wrote to memory of 2620	2360	Openstaande factuur.exe	31
PID 2360 wrote to memory of 2620	2360	Openstaande factuur.exe	31
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32
PID 2360 wrote to memory of 2920	2360	Openstaande factuur.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Openstaande factuur.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Openstaande factuur.exe

C:\Users\Admin\AppData\Local\Temp\Openstaande factuur.exe
"C:\Users\Admin\AppData\Local\Temp\Openstaande factuur.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Users\Admin\AppData\Local\Temp\Openstaande factuur.exe
  "C:\Users\Admin\AppData\Local\Temp\Openstaande factuur.exe"
  2⤵
  PID:2620
- C:\Users\Admin\AppData\Local\Temp\Openstaande factuur.exe
  "C:\Users\Admin\AppData\Local\Temp\Openstaande factuur.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:2920

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/2360-0-0x0000000073F8E000-0x0000000073F8F000-memory.dmp

Filesize
4KB

Download
memory/2360-1-0x0000000010040000-0x00000000100CC000-memory.dmp

Filesize
560KB

Download
memory/2360-2-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2360-3-0x0000000000260000-0x0000000000278000-memory.dmp

Filesize
96KB

Download
memory/2360-4-0x0000000073F8E000-0x0000000073F8F000-memory.dmp

Filesize
4KB

Download
memory/2360-5-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2360-6-0x0000000004810000-0x0000000004868000-memory.dmp

Filesize
352KB

Download
memory/2360-7-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download
memory/2360-8-0x0000000002130000-0x0000000002170000-memory.dmp

Filesize
256KB

Download
memory/2360-21-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2920-20-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2920-12-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2920-15-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2920-9-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2920-17-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2920-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2920-10-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2920-19-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2920-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2920-22-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2920-23-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2920-24-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2920-25-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2920-26-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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