agenttesla | fdbf252fb3867cb9b7adb13b8b7716e2b585fda8701270b28784cc506698dc52

General

Target

Quotation.exe
Size

2.1MB
MD5

bc00e7956757b6beda2899c9b0650bb7
SHA1

70f49f5d30f3bcefc68a89033869d537dc3e98b4
SHA256

fdbf252fb3867cb9b7adb13b8b7716e2b585fda8701270b28784cc506698dc52
SHA512

6c3825b283ee2d0704e1e7542bd86d51a5775a6a66308d2e0f0e0801c2e4dd78f49dd93177efbdc6a660c60ad625b99f8540d4361caa774f54daacf5f542659c
SSDEEP

24576:wZoalZDKcTuY9Tc+TnWT1fPlwJhbz/iHaYGT404LrXhFQPXJO70yFzfAEuj1ZLq9:lEW5lsbLzTkzEVTLa

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5998210197:AAH-JIKMHb7dhxxuEktYZzJVzRIxsjtpP7Y/

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Lvxzuojt\\Titfeptt.exe\","	Quotation.exe

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
T1081
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
T1081
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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.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 1708 set thread context of 1532	1708	Quotation.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
564	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	564	powershell.exe
Token: SeDebugPrivilege	1708	Quotation.exe
Token: SeDebugPrivilege	1532	Quotation.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1532	Quotation.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 564	1708	Quotation.exe	28
PID 1708 wrote to memory of 564	1708	Quotation.exe	28
PID 1708 wrote to memory of 564	1708	Quotation.exe	28
PID 1708 wrote to memory of 564	1708	Quotation.exe	28
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30
PID 1708 wrote to memory of 1532	1708	Quotation.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Quotation.exe

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:564
- C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  C:\Users\Admin\AppData\Local\Temp\Quotation.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1532

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/564-61-0x00000000001D0000-0x0000000000210000-memory.dmp

Filesize
256KB

Download
memory/564-63-0x00000000001D0000-0x0000000000210000-memory.dmp

Filesize
256KB

Download
memory/564-62-0x00000000001D0000-0x0000000000210000-memory.dmp

Filesize
256KB

Download
memory/1532-75-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1532-73-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1532-70-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1532-76-0x0000000004F80000-0x0000000004FC0000-memory.dmp

Filesize
256KB

Download
memory/1532-83-0x0000000004F80000-0x0000000004FC0000-memory.dmp

Filesize
256KB

Download
memory/1532-71-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1532-66-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1532-68-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1532-67-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1532-69-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1708-58-0x0000000004A20000-0x0000000004A60000-memory.dmp

Filesize
256KB

Download
memory/1708-64-0x0000000004A20000-0x0000000004A60000-memory.dmp

Filesize
256KB

Download
memory/1708-54-0x00000000008F0000-0x0000000000B16000-memory.dmp

Filesize
2.1MB

Download
memory/1708-57-0x0000000004250000-0x00000000042E2000-memory.dmp

Filesize
584KB

Download
memory/1708-56-0x0000000004180000-0x00000000041A6000-memory.dmp

Filesize
152KB

Download
memory/1708-55-0x00000000048C0000-0x0000000004A08000-memory.dmp

Filesize
1.3MB

Download

Analysis

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