agenttesla | 3702d77895124b57140bce0482029875be25274a2c30ec6d8fac8bbdfcd92394

General

Target

正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe
Size

300KB
MD5

4fdf9741c120f25e66ba4cf07067c5d5
SHA1

7edfe85c45ead131f31f158c6c4ba2ef5f6291c8
SHA256

3702d77895124b57140bce0482029875be25274a2c30ec6d8fac8bbdfcd92394
SHA512

0a2194639ae4870cdc4cbfb74e3d7a5e7a5c24c22f35d1616acdcf0063d82e14d7b0c7b04427321b95d3dfa283970e0f4c90b7732d4cb1232461e06ab19d45b6
SSDEEP

6144:tqEttR2Nor0fA34WY4bBdTvki2QMqoFZRGILs1UbEIIRA7C+iwH2:nhfY0BdTsQMhFfGIxEIIK99

Score

10^/10

agenttesla collection discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5556229164:AAG06WuQ2Ibcy5ZKb4lTSDlmionK0lTPWiM/

Signatures

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fOLFRQq = "C:\\Users\\Admin\\AppData\\Roaming\\fOLFRQq\\fOLFRQq.exe"	RegAsm.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
17	api.ipify.org
18	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3492 set thread context of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82

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	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe
Token: SeDebugPrivilege	1984	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1984	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82
PID 3492 wrote to memory of 1984	3492	正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe
"C:\Users\Admin\AppData\Local\Temp\正本-广数-数控铣床-RFQ_证书（1282）-2023.03.08(2)_00.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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 Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1984-10-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1984-29-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/1984-19-0x0000000006B80000-0x0000000006D42000-memory.dmp

Filesize
1.8MB

Download
memory/1984-18-0x00000000068A0000-0x00000000068F0000-memory.dmp

Filesize
320KB

Download
memory/1984-17-0x0000000006830000-0x000000000683A000-memory.dmp

Filesize
40KB

Download
memory/1984-14-0x0000000004EB0000-0x0000000004F16000-memory.dmp

Filesize
408KB

Download
memory/1984-15-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/1984-13-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/3492-4-0x00000000050D0000-0x000000000516C000-memory.dmp

Filesize
624KB

Download
memory/3492-9-0x0000000005380000-0x000000000538A000-memory.dmp

Filesize
40KB

Download
memory/3492-8-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/3492-12-0x0000000075280000-0x0000000075A30000-memory.dmp

Filesize
7.7MB

Download
memory/3492-7-0x00000000051F0000-0x000000000520E000-memory.dmp

Filesize
120KB

Download
memory/3492-6-0x0000000005230000-0x0000000005278000-memory.dmp

Filesize
288KB

Download
memory/3492-5-0x0000000005170000-0x00000000051E6000-memory.dmp

Filesize
472KB

Download
memory/3492-0-0x000000007528E000-0x000000007528F000-memory.dmp

Filesize
4KB

Download
memory/3492-3-0x0000000004F90000-0x0000000005022000-memory.dmp

Filesize
584KB

Download
memory/3492-2-0x0000000005440000-0x00000000059E4000-memory.dmp

Filesize
5.6MB

Download
memory/3492-1-0x00000000005B0000-0x0000000000600000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads