agenttesla | 73ac93c0f36ef76d8a24a8b329662a6e589d23b6908b0a77daaa96718e0328d7

General

Target

KTVC1T1Q.exe
Size

451KB
MD5

25e2eb0fa9921cd581cfda6e4704df84
SHA1

50a460840f06df61f392aa8ed418ffe2920f60d0
SHA256

980aa437fe75f379ec614dbf85c3de7c1b9d9551c78e898be04b49ec1fde6b9c
SHA512

6d863706bba3c27284301846d2ff4174619ba1d09785da55df50909482e4b3557f0ae788026c568b8f5f229196e1eff4d056a87e25a2119d9c9ab888ca280e53

Score

10^/10

agenttesla collection evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.starmakertravel.com
Port:
587
Username:
[email protected]
Password:
admin2000

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/320-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/320-64-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/320-65-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/320-66-0x000000000044B0EE-mapping.dmp	family_agenttesla
behavioral1/memory/320-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/320-70-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/900-57-0x00000000045E0000-0x0000000004638000-memory.dmp	rezer0

Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

KTVC1T1Q.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	KTVC1T1Q.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	KTVC1T1Q.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

Processes:

KTVC1T1Q.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	KTVC1T1Q.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	KTVC1T1Q.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	KTVC1T1Q.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

KTVC1T1Q.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	KTVC1T1Q.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	KTVC1T1Q.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

KTVC1T1Q.exe

description pid process target process

PID 900 set thread context of 320 900 KTVC1T1Q.exe KTVC1T1Q.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1828 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

KTVC1T1Q.exeKTVC1T1Q.exe

pid process

900 KTVC1T1Q.exe
320 KTVC1T1Q.exe
320 KTVC1T1Q.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

KTVC1T1Q.exeKTVC1T1Q.exe

description pid process

Token: SeDebugPrivilege 900 KTVC1T1Q.exe
Token: SeDebugPrivilege 320 KTVC1T1Q.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

KTVC1T1Q.exe

pid process

320 KTVC1T1Q.exe

description	pid	process	target process
PID 900 set thread context of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe

pid	process
1828	schtasks.exe

pid	process
900	KTVC1T1Q.exe
320	KTVC1T1Q.exe
320	KTVC1T1Q.exe

description	pid	process
Token: SeDebugPrivilege	900	KTVC1T1Q.exe
Token: SeDebugPrivilege	320	KTVC1T1Q.exe

pid	process
320	KTVC1T1Q.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

KTVC1T1Q.exeKTVC1T1Q.exe

description	pid	process	target process
PID 900 wrote to memory of 1828	900	KTVC1T1Q.exe	schtasks.exe
PID 900 wrote to memory of 1828	900	KTVC1T1Q.exe	schtasks.exe
PID 900 wrote to memory of 1828	900	KTVC1T1Q.exe	schtasks.exe
PID 900 wrote to memory of 1828	900	KTVC1T1Q.exe	schtasks.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 900 wrote to memory of 320	900	KTVC1T1Q.exe	KTVC1T1Q.exe
PID 320 wrote to memory of 1512	320	KTVC1T1Q.exe	netsh.exe
PID 320 wrote to memory of 1512	320	KTVC1T1Q.exe	netsh.exe
PID 320 wrote to memory of 1512	320	KTVC1T1Q.exe	netsh.exe
PID 320 wrote to memory of 1512	320	KTVC1T1Q.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

KTVC1T1Q.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	KTVC1T1Q.exe

outlook_win_path 1 IoCs

Processes:

KTVC1T1Q.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	KTVC1T1Q.exe

C:\Users\Admin\AppData\Local\Temp\KTVC1T1Q.exe
"C:\Users\Admin\AppData\Local\Temp\KTVC1T1Q.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:900

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SHuDQBjriqWzs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC22.tmp"
2⤵
- Creates scheduled task(s)
PID:1828

C:\Users\Admin\AppData\Local\Temp\KTVC1T1Q.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:320

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1512

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC22.tmp
Filesize
1KB

MD5
1480fc443cd60a1d82bb90f04dbecade

SHA1
c42bd6b7fc704ce229966f5617cb9f851cedcc62

SHA256
335613fa8d8c1f6bcc66bf7444eb6c118f5a8d0b49018dad1465ccee7bb26944

SHA512
bdc6e3a3d5976f19bcd3b18233679f080d977d5e808ff089ce73ef17afaae97609cc19827e87379b2b0926d7675648e15e5457af48bbb925a57dc9ac5b585942

Download Submit
memory/320-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/320-66-0x000000000044B0EE-mapping.dmp

Download
memory/320-70-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/320-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/320-65-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/320-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/320-60-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/320-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/900-54-0x0000000000B20000-0x0000000000B98000-memory.dmp

Filesize
480KB

Download
memory/900-55-0x00000000751C1000-0x00000000751C3000-memory.dmp

Filesize
8KB

Download
memory/900-56-0x0000000000350000-0x0000000000360000-memory.dmp

Filesize
64KB

Download
memory/900-57-0x00000000045E0000-0x0000000004638000-memory.dmp

Filesize
352KB

Download
memory/1512-72-0x0000000000000000-mapping.dmp

Download
memory/1828-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads