agenttesla | 1adc18ee6c7de3c847656ecaac4023ed89e5c989e80460daad5f19a9a7df31e8

General

Target

BANK_DET.exe
Size

521KB
MD5

32b0333324cb7e09a5310ca329882779
SHA1

3793cb0bcad49f89cb00a272f47bea318a137e8e
SHA256

4fba937f1e8ae7eab73de2233f36e813fc2e4e889cbf5103f72ed642ba2e76c3
SHA512

0202c00174eeb46d214362bd8eff7a4c7ed04b8d56d4f1bd6e2a6be48889aa00a0f37a78caa6ea7a6fbdaad1a016757ab459f88ab892dfafe936fe306cdf1675

Score

10^/10

agenttesla collection coreentity keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.logserver.ga
Port:
587
Username:
[email protected]
Password:
work2020

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/1928-56-0x00000000003E0000-0x00000000003E8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1524-61-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1524-62-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1524-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1524-64-0x000000000044C75E-mapping.dmp	family_agenttesla
behavioral1/memory/1524-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1524-68-0x0000000000400000-0x0000000000452000-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/1928-57-0x0000000000C40000-0x0000000000C98000-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:

BANK_DET.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	BANK_DET.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	BANK_DET.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	BANK_DET.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

BANK_DET.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\XPYkw = "C:\\Users\\Admin\\AppData\\Roaming\\XPYkw\\XPYkw.exe"	BANK_DET.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

BANK_DET.exe

description pid process target process

PID 1928 set thread context of 1524 1928 BANK_DET.exe BANK_DET.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

BANK_DET.exe

pid process

1524 BANK_DET.exe
1524 BANK_DET.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

BANK_DET.exeBANK_DET.exe

description pid process

Token: SeDebugPrivilege 1928 BANK_DET.exe
Token: SeDebugPrivilege 1524 BANK_DET.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

BANK_DET.exe

pid process

1524 BANK_DET.exe

description	pid	process	target process
PID 1928 set thread context of 1524	1928	BANK_DET.exe	BANK_DET.exe

pid	process
1524	BANK_DET.exe
1524	BANK_DET.exe

description	pid	process
Token: SeDebugPrivilege	1928	BANK_DET.exe
Token: SeDebugPrivilege	1524	BANK_DET.exe

pid	process
1524	BANK_DET.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

BANK_DET.exeBANK_DET.exe

description	pid	process	target process
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1928 wrote to memory of 1524	1928	BANK_DET.exe	BANK_DET.exe
PID 1524 wrote to memory of 1804	1524	BANK_DET.exe	netsh.exe
PID 1524 wrote to memory of 1804	1524	BANK_DET.exe	netsh.exe
PID 1524 wrote to memory of 1804	1524	BANK_DET.exe	netsh.exe
PID 1524 wrote to memory of 1804	1524	BANK_DET.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

BANK_DET.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	BANK_DET.exe

outlook_win_path 1 IoCs

Processes:

BANK_DET.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	BANK_DET.exe

C:\Users\Admin\AppData\Local\Temp\BANK_DET.exe
"C:\Users\Admin\AppData\Local\Temp\BANK_DET.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1928

C:\Users\Admin\AppData\Local\Temp\BANK_DET.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1524

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1804

MITRE ATT&CK Enterprise 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

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1524-64-0x000000000044C75E-mapping.dmp

Download
memory/1524-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1524-69-0x0000000076721000-0x0000000076723000-memory.dmp

Filesize
8KB

Download
memory/1524-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1524-58-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1524-59-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1524-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1524-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1524-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1804-70-0x0000000000000000-mapping.dmp

Download
memory/1928-54-0x0000000000CA0000-0x0000000000D2C000-memory.dmp

Filesize
560KB

Download
memory/1928-55-0x0000000000650000-0x00000000006AE000-memory.dmp

Filesize
376KB

Download
memory/1928-57-0x0000000000C40000-0x0000000000C98000-memory.dmp

Filesize
352KB

Download
memory/1928-56-0x00000000003E0000-0x00000000003E8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads