agenttesla | 52977c9b9eab04abbbf62bfb18501cf1df4d817e535705d2b7c3d7f8e963f19c

General

Target

RFQ 502480987.exe
Size

550KB
MD5

b5a010678795bb33fbb73b20586da186
SHA1

f94a011740fedec598b4a83bb3e041bfe4ba077e
SHA256

0f3796394a5e425855d842187813997be61e79058cfc546da575b27cf8c09ffb
SHA512

69493637dd03b0f432ebb24e6a15f98d2bb4931936d6af948157088d9dff30ec23a2abf8aeb0683c01edc2647575a841764f23c201a6d293540d8de08f63f3d2

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/1756-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1756-67-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1756-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1756-69-0x000000000044A07E-mapping.dmp	family_agenttesla
behavioral1/memory/1756-71-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1756-73-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1860-57-0x0000000004C90000-0x0000000004CE8000-memory.dmp	rezer0

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	RFQ 502480987.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	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

Suspicious use of SetThreadContext 1 IoCs

Processes:

RFQ 502480987.exe

description pid process target process

PID 1860 set thread context of 1756 1860 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

1760 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exeRFQ 502480987.exe

pid process

1728 powershell.exe
1756 RFQ 502480987.exe
1756 RFQ 502480987.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exeRFQ 502480987.exe

description pid process

Token: SeDebugPrivilege 1728 powershell.exe
Token: SeDebugPrivilege 1756 RFQ 502480987.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RFQ 502480987.exe

pid process

1756 RFQ 502480987.exe

description	pid	process	target process
PID 1860 set thread context of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe

pid	process
1760	schtasks.exe

pid	process
1728	powershell.exe
1756	RFQ 502480987.exe
1756	RFQ 502480987.exe

description	pid	process
Token: SeDebugPrivilege	1728	powershell.exe
Token: SeDebugPrivilege	1756	RFQ 502480987.exe

pid	process
1756	RFQ 502480987.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

RFQ 502480987.exe

description	pid	process	target process
PID 1860 wrote to memory of 1728	1860	RFQ 502480987.exe	powershell.exe
PID 1860 wrote to memory of 1728	1860	RFQ 502480987.exe	powershell.exe
PID 1860 wrote to memory of 1728	1860	RFQ 502480987.exe	powershell.exe
PID 1860 wrote to memory of 1728	1860	RFQ 502480987.exe	powershell.exe
PID 1860 wrote to memory of 1760	1860	RFQ 502480987.exe	schtasks.exe
PID 1860 wrote to memory of 1760	1860	RFQ 502480987.exe	schtasks.exe
PID 1860 wrote to memory of 1760	1860	RFQ 502480987.exe	schtasks.exe
PID 1860 wrote to memory of 1760	1860	RFQ 502480987.exe	schtasks.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	RFQ 502480987.exe	RFQ 502480987.exe
PID 1860 wrote to memory of 1756	1860	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⤵
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1860

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell" Get-MpPreference -verbose
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1728

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OqPwQzYQDGNmnq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp58CB.tmp"
2⤵
- Creates scheduled task(s)
PID:1760

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:1756

Network

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

Credential Access

Credentials in Files

3

T1081

Discovery

System Information Discovery

1

T1082

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\tmp58CB.tmp
Filesize
1KB

MD5
83ee6bb3ab938f9e2a1a27d6e7dac385

SHA1
5fc081bd34196096aed39839afb8b700d44991a6

SHA256
a723757267934a2ae8c068dd18f46045805fab96dc11bf992296b28290b62665

SHA512
61277e2b4a43df25c20e8ae1c32d516b1cf661c35bb683df1b43e0757742acc7cd0c57ebe551cbcffb34efa749f4ed4e29930e3177de08183bbd7aa7a5abcb8b

Download Submit
memory/1728-58-0x0000000000000000-mapping.dmp

Download
memory/1728-60-0x000000006F150000-0x000000006F6FB000-memory.dmp

Filesize
5.7MB

Download
memory/1756-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1756-64-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1756-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1756-67-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1756-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1756-69-0x000000000044A07E-mapping.dmp

Download
memory/1756-71-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1756-73-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1760-61-0x0000000000000000-mapping.dmp

Download
memory/1860-57-0x0000000004C90000-0x0000000004CE8000-memory.dmp

Filesize
352KB

Download
memory/1860-56-0x0000000000380000-0x0000000000388000-memory.dmp

Filesize
32KB

Download
memory/1860-55-0x0000000075E41000-0x0000000075E43000-memory.dmp

Filesize
8KB

Download
memory/1860-54-0x0000000001120000-0x00000000011B0000-memory.dmp

Filesize
576KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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