agenttesla | 84ff488c3f5e807a4f0bd00141a0ffbf40a617fc84b17f4545b2ead66e3d4d1b

General

Target

PAYMENT 1567_0001.exe
Size

487KB
MD5

32916faaddae9b5d16ca910ad044646c
SHA1

cde19ecbedba9e97abe62f588b0dd9b78dbc50d3
SHA256

8eeca9884be4d017c4c5cf62fd5b080efd5cf3e9c85d70c518ae31d796713110
SHA512

3af7646f041ceb28f7c126332224b8899a4b16a7544bb569d14936995920eb6ef7c26e7500fef4ab030a15236a65400e59ff72c16d27bad87d2d537d9048f35b

Score

10^/10

agenttesla collection coreentity keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.privateemail.com
Port:
587
Username:
eurotoolz@returntolz.com
Password:
Protected@123

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/904-56-0x00000000004D0000-0x00000000004D8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/940-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/940-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/940-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/940-66-0x000000000044C7EE-mapping.dmp	family_agenttesla
behavioral1/memory/940-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/940-70-0x0000000000400000-0x0000000000452000-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/904-57-0x0000000004F30000-0x0000000004F88000-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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

PAYMENT 1567_0001.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	PAYMENT 1567_0001.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PAYMENT 1567_0001.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PAYMENT 1567_0001.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PAYMENT 1567_0001.exe

description pid process target process

PID 904 set thread context of 940 904 PAYMENT 1567_0001.exe PAYMENT 1567_0001.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

1208 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

PAYMENT 1567_0001.exe

pid process

940 PAYMENT 1567_0001.exe
940 PAYMENT 1567_0001.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

PAYMENT 1567_0001.exe

description pid process

Token: SeDebugPrivilege 940 PAYMENT 1567_0001.exe

description	pid	process	target process
PID 904 set thread context of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe

pid	process
1208	schtasks.exe

pid	process
940	PAYMENT 1567_0001.exe
940	PAYMENT 1567_0001.exe

description	pid	process
Token: SeDebugPrivilege	940	PAYMENT 1567_0001.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PAYMENT 1567_0001.exePAYMENT 1567_0001.exe

description	pid	process	target process
PID 904 wrote to memory of 1208	904	PAYMENT 1567_0001.exe	schtasks.exe
PID 904 wrote to memory of 1208	904	PAYMENT 1567_0001.exe	schtasks.exe
PID 904 wrote to memory of 1208	904	PAYMENT 1567_0001.exe	schtasks.exe
PID 904 wrote to memory of 1208	904	PAYMENT 1567_0001.exe	schtasks.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 904 wrote to memory of 940	904	PAYMENT 1567_0001.exe	PAYMENT 1567_0001.exe
PID 940 wrote to memory of 1468	940	PAYMENT 1567_0001.exe	netsh.exe
PID 940 wrote to memory of 1468	940	PAYMENT 1567_0001.exe	netsh.exe
PID 940 wrote to memory of 1468	940	PAYMENT 1567_0001.exe	netsh.exe
PID 940 wrote to memory of 1468	940	PAYMENT 1567_0001.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

PAYMENT 1567_0001.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	PAYMENT 1567_0001.exe

outlook_win_path 1 IoCs

Processes:

PAYMENT 1567_0001.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	PAYMENT 1567_0001.exe

C:\Users\Admin\AppData\Local\Temp\PAYMENT 1567_0001.exe
"C:\Users\Admin\AppData\Local\Temp\PAYMENT 1567_0001.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:904

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kvVvcFR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC727.tmp"
2⤵
- Creates scheduled task(s)
PID:1208

C:\Users\Admin\AppData\Local\Temp\PAYMENT 1567_0001.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:940

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1468

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

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\tmpC727.tmp
Filesize
1KB

MD5
751e48e7d58b65b3a3f8188a0f97d91a

SHA1
c1f2c28d6f357302285e92d464581b0e3181f0b4

SHA256
59e2348a5bfcb74c902644c3171ad8b8c2ae0337e42fbb565794617f8767a038

SHA512
6451105a4de31875fc9838b4d1fd02aeca93d8232a5969492614cffe70c3a464a78d90e7c7b6497dacfc33c5969eb2c4e07a8798f67c5cd324942093c707ae45

Download Submit
memory/904-55-0x00000000751C1000-0x00000000751C3000-memory.dmp

Filesize
8KB

Download
memory/904-56-0x00000000004D0000-0x00000000004D8000-memory.dmp

Filesize
32KB

Download
memory/904-57-0x0000000004F30000-0x0000000004F88000-memory.dmp

Filesize
352KB

Download
memory/904-54-0x00000000002E0000-0x0000000000360000-memory.dmp

Filesize
512KB

Download
memory/940-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/940-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/940-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/940-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/940-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/940-66-0x000000000044C7EE-mapping.dmp

Download
memory/940-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/940-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1208-58-0x0000000000000000-mapping.dmp

Download
memory/1468-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads