agenttesla | b50a0633963a8ae9cfd05db3af16c16584c55d707a5dac3633cb5318fca4b6d2

General

Target

proforma invoice.exe
Size

474KB
MD5

b79c749616e332aa98dff35091bc7ddb
SHA1

e853d7048efcef7e7c8259e92000d8efca9b66af
SHA256

c9b3d6a92282d003ae960076c147e224c8064fd98229c96df353948dc685237b
SHA512

156b627138e939abd3b5432783643502d021fcdd0b805380c4f8ce406aa16b06f9b2f09edb62865378c454197cb9f6c9747ec6803078f1fbc2b5935047589ad3
SSDEEP

12288:LDuUPu3qK0V5f5f5fGRRv5Bt9fcqg8ZVGD9PfCp3pP+KNOQgIMXKy5xU:nuiZZGRRfZkUtV+xf6y

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence privilege_escalation spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
business41.web-hosting.com
Port:
587
Username:
[email protected]
Password:
london1759

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
business41.web-hosting.com
Port:
587
Username:
[email protected]
Password:
london1759

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/3948-8-0x0000000000400000-0x0000000000452000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	proforma invoice.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
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-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	proforma invoice.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	proforma invoice.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	proforma invoice.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2424 set thread context of 3948	2424	proforma invoice.exe	88

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	proforma invoice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	proforma invoice.exe

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 1 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
1052	netsh.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2408	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3948	proforma invoice.exe
3948	proforma invoice.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3948	proforma invoice.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3948	proforma invoice.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 2408	2424	proforma invoice.exe	86
PID 2424 wrote to memory of 2408	2424	proforma invoice.exe	86
PID 2424 wrote to memory of 2408	2424	proforma invoice.exe	86
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 2424 wrote to memory of 3948	2424	proforma invoice.exe	88
PID 3948 wrote to memory of 1052	3948	proforma invoice.exe	97
PID 3948 wrote to memory of 1052	3948	proforma invoice.exe	97
PID 3948 wrote to memory of 1052	3948	proforma invoice.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	proforma invoice.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	proforma invoice.exe

C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe
"C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2424
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yGgQPFWIoVqeWq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB239.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2408
- C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe
  "C:\Users\Admin\AppData\Local\Temp\proforma invoice.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:3948
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Wi-Fi Discovery
    PID:1052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Wi-Fi Discovery

1

T1016.002

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\proforma invoice.exe.log

Filesize
496B

MD5
cb76b18ebed3a9f05a14aed43d35fba6

SHA1
836a4b4e351846fca08b84149cb734cb59b8c0d6

SHA256
8d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349

SHA512
7631141e4a6dda29452ada666326837372cd3d045f773006f63d9eff15d9432ed00029d9108a72c1a3b858377600a2aab2c9ec03764285c8801b6019babcf21c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB239.tmp

Filesize
1KB

MD5
46592470ec86d25a89c153f8aab8f9ee

SHA1
7501c3442500b9294345186b5e0accf8658baedb

SHA256
ad7e9a0fb633e3c173c4d714db6fa5a85c087f401fe0af3ab861691a47943466

SHA512
0456a68647a30c7e019339e20a585d76363818b025900acf6fcda296550705ad59852278806d1d06a087c7600621201900534d5582ef5b2cff68bda476da7b6f

Download Submit
memory/2424-0-0x0000000074F52000-0x0000000074F53000-memory.dmp

Filesize
4KB

Download
memory/2424-1-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/2424-2-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/2424-11-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/3948-12-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/3948-8-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/3948-14-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/3948-13-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/3948-15-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/3948-16-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download
memory/3948-17-0x0000000074F50000-0x0000000075501000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads