agenttesla | 782083fbf59bde49ea9e6fe9b81bd4e2c0caf67d032b6c130d74f4826ba5ed02

General

Target

RFQ_502480987.exe
Size

456KB
MD5

824a7153c1a14e7ddf069f46157a1d9d
SHA1

77116aba7ff9d7ef6a897a904ba8ce03816766e0
SHA256

bacaaa40e0f3b6cba3fc498dfbd6f2d198a767453cd8513acdbafa9fefaeed2a
SHA512

1704738f458c31490359a25c8dd5c25d5201b9c448d4e6ddade8b00871e8348c56095a5d97efbe79288987c11902741ed4e0e3fd3e52172f9e844023f594e1b9

Score

10^/10

agenttesla collection evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
gatefee22

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/468-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-67-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-69-0x000000000044A07E-mapping.dmp	family_agenttesla
behavioral1/memory/468-71-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/468-73-0x0000000000400000-0x0000000000450000-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/1580-57-0x0000000000880000-0x00000000008D8000-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:

RFQ_502480987.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	RFQ_502480987.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	RFQ_502480987.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

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

RFQ_502480987.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	RFQ_502480987.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	RFQ_502480987.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

RFQ_502480987.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ_502480987.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ_502480987.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ_502480987.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:

RFQ_502480987.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	RFQ_502480987.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	RFQ_502480987.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ_502480987.exe

description pid process target process

PID 1580 set thread context of 468 1580 RFQ_502480987.exe RFQ_502480987.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

1864 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exeRFQ_502480987.exe

pid process

1596 powershell.exe
468 RFQ_502480987.exe
468 RFQ_502480987.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeRFQ_502480987.exe

description pid process

Token: SeDebugPrivilege 1596 powershell.exe
Token: SeDebugPrivilege 468 RFQ_502480987.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RFQ_502480987.exe

pid process

468 RFQ_502480987.exe

description	pid	process	target process
PID 1580 set thread context of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe

pid	process
1864	schtasks.exe

pid	process
1596	powershell.exe
468	RFQ_502480987.exe
468	RFQ_502480987.exe

description	pid	process
Token: SeDebugPrivilege	1596	powershell.exe
Token: SeDebugPrivilege	468	RFQ_502480987.exe

pid	process
468	RFQ_502480987.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

RFQ_502480987.exe

description	pid	process	target process
PID 1580 wrote to memory of 1596	1580	RFQ_502480987.exe	powershell.exe
PID 1580 wrote to memory of 1596	1580	RFQ_502480987.exe	powershell.exe
PID 1580 wrote to memory of 1596	1580	RFQ_502480987.exe	powershell.exe
PID 1580 wrote to memory of 1596	1580	RFQ_502480987.exe	powershell.exe
PID 1580 wrote to memory of 1864	1580	RFQ_502480987.exe	schtasks.exe
PID 1580 wrote to memory of 1864	1580	RFQ_502480987.exe	schtasks.exe
PID 1580 wrote to memory of 1864	1580	RFQ_502480987.exe	schtasks.exe
PID 1580 wrote to memory of 1864	1580	RFQ_502480987.exe	schtasks.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe
PID 1580 wrote to memory of 468	1580	RFQ_502480987.exe	RFQ_502480987.exe

outlook_office_path 1 IoCs

Processes:

RFQ_502480987.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ_502480987.exe

outlook_win_path 1 IoCs

Processes:

RFQ_502480987.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ_502480987.exe

C:\Users\Admin\AppData\Local\Temp\RFQ_502480987.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ_502480987.exe"
1⤵
- Checks BIOS information in registry
- Windows security modification
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1580

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell" Get-MpPreference -verbose
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1596

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PLwwYlHf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7BA6.tmp"
2⤵
- Creates scheduled task(s)
PID:1864

C:\Users\Admin\AppData\Local\Temp\RFQ_502480987.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:468

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Modify Existing Service

1

T1031

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

2

T1112

Disabling Security Tools

2

T1089

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7BA6.tmp
Filesize
1KB

MD5
9800ec599fffc20fb9e615bcf5cfa2fa

SHA1
a6b679ac2cb5e91b6c5527889df6c9dd42bae4b3

SHA256
45e70bf0a8c37ac9c60da865c50b006e7c60c2946a01ad89929e1fd272a938f9

SHA512
0cccdbdf11809be33c52abb54615cf5228a7e1dd3aa2435db5e0694c65bdb4bec77770191d8db5991fdf530466156f7b76fe174da0a373c26b90d0c65b24b9be

Download Submit
memory/468-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-67-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-73-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-71-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-69-0x000000000044A07E-mapping.dmp

Download
memory/468-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/468-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1580-55-0x0000000076811000-0x0000000076813000-memory.dmp

Filesize
8KB

Download
memory/1580-56-0x0000000000320000-0x0000000000328000-memory.dmp

Filesize
32KB

Download
memory/1580-54-0x0000000001300000-0x0000000001378000-memory.dmp

Filesize
480KB

Download
memory/1580-57-0x0000000000880000-0x00000000008D8000-memory.dmp

Filesize
352KB

Download
memory/1596-60-0x000000006F830000-0x000000006FDDB000-memory.dmp

Filesize
5.7MB

Download
memory/1596-58-0x0000000000000000-mapping.dmp

Download
memory/1864-61-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads