agenttesla | 1b1818814f7e052dac66ff9475b46b7f7663b29f0e3ada14d854bff27736fb50

General

Target

Approved POSAS.21.10.0746.exe
Size

549KB
MD5

e36cc684b9bf523242fb17616c257677
SHA1

8a8b34396edfeb6a2d5ca6583b175fe852a97e59
SHA256

68354b72cbccc7ef28c4d8835469af5c3b572760667295ccb60d1d7f1060ef8f
SHA512

efc17093bbd7d64c1b49f45a47e6307c20d32f3e58a36549ed0340dfd2194448a19de52a378a12aa8c7480e72af89ca9f7bff9a26505e4b977b64f26f039f90d
SSDEEP

12288:lN8gOx5ZpG2e4tXF5GhBjMXt8A1nAB4+c:T8/vZS4t156oXtjH+c

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/3332-16-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	Approved POSAS.21.10.0746.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 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-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Approved POSAS.21.10.0746.exe
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Approved POSAS.21.10.0746.exe
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Approved POSAS.21.10.0746.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2412 set thread context of 3332	2412	Approved POSAS.21.10.0746.exe	93

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	Approved POSAS.21.10.0746.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Approved POSAS.21.10.0746.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
3348	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2412	Approved POSAS.21.10.0746.exe
2412	Approved POSAS.21.10.0746.exe
3332	Approved POSAS.21.10.0746.exe
3332	Approved POSAS.21.10.0746.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2412	Approved POSAS.21.10.0746.exe
Token: SeDebugPrivilege	3332	Approved POSAS.21.10.0746.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3332	Approved POSAS.21.10.0746.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 3348	2412	Approved POSAS.21.10.0746.exe	91
PID 2412 wrote to memory of 3348	2412	Approved POSAS.21.10.0746.exe	91
PID 2412 wrote to memory of 3348	2412	Approved POSAS.21.10.0746.exe	91
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93
PID 2412 wrote to memory of 3332	2412	Approved POSAS.21.10.0746.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Approved POSAS.21.10.0746.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Approved POSAS.21.10.0746.exe

C:\Users\Admin\AppData\Local\Temp\Approved POSAS.21.10.0746.exe
"C:\Users\Admin\AppData\Local\Temp\Approved POSAS.21.10.0746.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kgGlnbuUaU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF992.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3348
- C:\Users\Admin\AppData\Local\Temp\Approved POSAS.21.10.0746.exe
  "C:\Users\Admin\AppData\Local\Temp\Approved POSAS.21.10.0746.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:3332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

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

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2412-10-0x0000000007500000-0x0000000007560000-memory.dmp

Filesize
384KB

Download
memory/2412-2-0x0000000006030000-0x00000000065D4000-memory.dmp

Filesize
5.6MB

Download
memory/2412-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2412-3-0x00000000059D0000-0x0000000005A62000-memory.dmp

Filesize
584KB

Download
memory/2412-4-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/2412-5-0x0000000005B70000-0x0000000005B7A000-memory.dmp

Filesize
40KB

Download
memory/2412-6-0x0000000007150000-0x00000000071EC000-memory.dmp

Filesize
624KB

Download
memory/2412-7-0x0000000005E20000-0x0000000005E2E000-memory.dmp

Filesize
56KB

Download
memory/2412-19-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/2412-9-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/2412-8-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2412-1-0x0000000000F60000-0x0000000000FEE000-memory.dmp

Filesize
568KB

Download
memory/3332-27-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/3332-18-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/3332-20-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/3332-21-0x00000000052A0000-0x00000000052B8000-memory.dmp

Filesize
96KB

Download
memory/3332-22-0x0000000005EE0000-0x0000000005F46000-memory.dmp

Filesize
408KB

Download
memory/3332-23-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/3332-24-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/3332-25-0x00000000061D0000-0x0000000006220000-memory.dmp

Filesize
320KB

Download
memory/3332-26-0x0000000074C90000-0x0000000075440000-memory.dmp

Filesize
7.7MB

Download
memory/3332-16-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads