agenttesla | f4849db5c662c4631ac333b87c539cb8c24f5639fe7d0447c77af1c6467bb1a3

General

Target

Machine PO3742020.exe
Size

933KB
MD5

7c4973893485e12e5cc3a888d42b8518
SHA1

21f6a5344a658ae2e79415f086d7663673e2d3c8
SHA256

5ebbf9654d1eeecb0f4b71e3253d1420c131277d93af9a47150b9f631958fd8d
SHA512

9fc1ddca8381913e5432611eefbe69375a4df9a425a9ea21304500047ef24c42cb7d0437b3010835a0fa401d932f711a86d8a38c4f058f98b79d4dbcbe8d8596

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.radarcncs.com/
Port:
21
Username:
[email protected]
Password:
8,4=M~_i,5NV

Protocol: ftp
Host:
ftp://ftp.radarcncs.com/
Port:
21
Username:
[email protected]
Password:
8,4=M~_i,5NV

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1736-60-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla

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

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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

T1060

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Machine PO3742020.exe

description pid process target process

PID 1812 set thread context of 1736 1812 Machine PO3742020.exe RegAsm.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegAsm.exe

pid process

1736 RegAsm.exe
1736 RegAsm.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

Machine PO3742020.exe

pid process

1812 Machine PO3742020.exe
1812 Machine PO3742020.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 1736 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

1736 RegAsm.exe

description	pid	process	target process
PID 1812 set thread context of 1736	1812	Machine PO3742020.exe	RegAsm.exe

pid	process
1736	RegAsm.exe
1736	RegAsm.exe

pid	process
1812	Machine PO3742020.exe
1812	Machine PO3742020.exe

description	pid	process
Token: SeDebugPrivilege	1736	RegAsm.exe

pid	process
1736	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Machine PO3742020.exe

description	pid	process	target process
PID 1812 wrote to memory of 1232	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1232	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1232	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1232	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1232	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1232	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1232	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe
PID 1812 wrote to memory of 1736	1812	Machine PO3742020.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\Machine PO3742020.exe
"C:\Users\Admin\AppData\Local\Temp\Machine PO3742020.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1812

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:1232

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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:1736

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/1736-58-0x00000000004610DE-mapping.dmp

Download
memory/1736-60-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1812-54-0x0000000000310000-0x0000000000400000-memory.dmp

Filesize
960KB

Download
memory/1812-55-0x0000000005330000-0x000000000539E000-memory.dmp

Filesize
440KB

Download
memory/1812-56-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/1812-57-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads