agenttesla | 827e98b504fbb413f8015d78cf5ea7a7105f800d48bb2205993d957591a679a6

General

Target

QUOTATION#008792.exe
Size

760KB
MD5

db39d1e9256aa4ad6fc88d0fe4f0fcda
SHA1

703cab44b0654a9d446529faebabd405711e9f43
SHA256

1512bb8d4a24e83570b89e5644503fc5d308b6f56c23d481bcf802dd78755735
SHA512

ffa9f0b78897c5f2c7df55d3a0558d06aa01278152cb6edf62b3a2119425b1a0e0017ae5294bca466a674e68ee45aa9eb6fe9ab5a44102c9618d33aaf04a9a2e
SSDEEP

12288:UlvGOMK7btF5GQ4SZzuWNVBv5xRKA8fZIVtt+qFqyAbchAdrZ3X3u+:UleSbtnF4SZiWNVBv5/8fZWtttqyAAAB

Score

10^/10

agenttesla discovery evasion execution keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: ftp
Host:
ftp.ercolina-usa.com
Port:
21
Username:
[email protected]
Password:
nXe0M~WkW&nJ

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.ercolina-usa.com
Port:
21
Username:
[email protected]
Password:
nXe0M~WkW&nJ

Signatures

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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	QUOTATION#008792.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2392	powershell.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	regasm.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	QUOTATION#008792.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	QUOTATION#008792.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	api.ipify.org
5	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2348 set thread context of 2920	2348	QUOTATION#008792.exe	32

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 1 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	regasm.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2392	powershell.exe
2920	regasm.exe
2920	regasm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2392	powershell.exe
Token: SeDebugPrivilege	2920	regasm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2920	regasm.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 2392	2348	QUOTATION#008792.exe	30
PID 2348 wrote to memory of 2392	2348	QUOTATION#008792.exe	30
PID 2348 wrote to memory of 2392	2348	QUOTATION#008792.exe	30
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2920	2348	QUOTATION#008792.exe	32
PID 2348 wrote to memory of 2972	2348	QUOTATION#008792.exe	33
PID 2348 wrote to memory of 2972	2348	QUOTATION#008792.exe	33
PID 2348 wrote to memory of 2972	2348	QUOTATION#008792.exe	33

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	QUOTATION#008792.exe

C:\Users\Admin\AppData\Local\Temp\QUOTATION#008792.exe
"C:\Users\Admin\AppData\Local\Temp\QUOTATION#008792.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2348
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\QUOTATION#008792.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2392
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2920
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2348 -s 696
  2⤵
  PID:2972

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2348-0-0x000007FEF5AC3000-0x000007FEF5AC4000-memory.dmp

Filesize
4KB

Download
memory/2348-1-0x0000000000010000-0x00000000000D2000-memory.dmp

Filesize
776KB

Download
memory/2348-2-0x0000000000550000-0x00000000005E6000-memory.dmp

Filesize
600KB

Download
memory/2348-3-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2348-25-0x000007FEF5AC0000-0x000007FEF64AC000-memory.dmp

Filesize
9.9MB

Download
memory/2392-8-0x0000000002D60000-0x0000000002DE0000-memory.dmp

Filesize
512KB

Download
memory/2392-22-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2392-19-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2920-20-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2920-21-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2920-18-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2920-15-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2920-13-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2920-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2920-11-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download
memory/2920-9-0x0000000000400000-0x0000000000444000-memory.dmp

Filesize
272KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads