agenttesla | 0f233dde08fb539a6840d5e8c1ddf936d2384d29e6c83ae3dfd36b3d333710ea

General

Target

myHCMK7ruWH4kYF.exe
Size

426KB
MD5

c3561e6ae15aa8f0b68309d6f20798a9
SHA1

ce3c13209c2799565c11509a5a6cc6b2d2d23699
SHA256

32a725941812a7722531f5575dd8f25d60392878b1d1d17c48797ac197981fd3
SHA512

1fb3575afcf1a745fc34926e3fc58ed06d25a7e2eb6d90e648dbe87ee826e2d80a323d89d61a61badb5acfd523953f86f7b71db20c32384aa1a695ece481fa54

Score

10^/10

agenttesla collection coreentity keylogger persistence rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.lettu.us
Port:
587
Username:
[email protected]
Password:
ilovejesus2020@

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/1700-56-0x0000000000560000-0x0000000000568000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1552-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1552-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1552-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1552-64-0x000000000044A9EE-mapping.dmp	family_agenttesla
behavioral1/memory/1552-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1552-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

CoreCCC Packer 1 IoCs

Detects CoreCCC packer used to load .NET malware.

Processes:

resource	yara_rule
behavioral1/memory/1700-54-0x0000000001260000-0x00000000012D0000-memory.dmp	coreccc

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1700-57-0x0000000000C90000-0x0000000000CE6000-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:

myHCMK7ruWH4kYF.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	myHCMK7ruWH4kYF.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	myHCMK7ruWH4kYF.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	myHCMK7ruWH4kYF.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

myHCMK7ruWH4kYF.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\yDAORE = "C:\\Users\\Admin\\AppData\\Roaming\\yDAORE\\yDAORE.exe"	myHCMK7ruWH4kYF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

myHCMK7ruWH4kYF.exe

description pid process target process

PID 1700 set thread context of 1552 1700 myHCMK7ruWH4kYF.exe myHCMK7ruWH4kYF.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

myHCMK7ruWH4kYF.exe

pid process

1552 myHCMK7ruWH4kYF.exe
1552 myHCMK7ruWH4kYF.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

myHCMK7ruWH4kYF.exe

description pid process

Token: SeDebugPrivilege 1552 myHCMK7ruWH4kYF.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

myHCMK7ruWH4kYF.exe

pid process

1552 myHCMK7ruWH4kYF.exe

description	pid	process	target process
PID 1700 set thread context of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe

pid	process
1552	myHCMK7ruWH4kYF.exe
1552	myHCMK7ruWH4kYF.exe

description	pid	process
Token: SeDebugPrivilege	1552	myHCMK7ruWH4kYF.exe

pid	process
1552	myHCMK7ruWH4kYF.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

myHCMK7ruWH4kYF.exemyHCMK7ruWH4kYF.exe

description	pid	process	target process
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1700 wrote to memory of 1552	1700	myHCMK7ruWH4kYF.exe	myHCMK7ruWH4kYF.exe
PID 1552 wrote to memory of 748	1552	myHCMK7ruWH4kYF.exe	netsh.exe
PID 1552 wrote to memory of 748	1552	myHCMK7ruWH4kYF.exe	netsh.exe
PID 1552 wrote to memory of 748	1552	myHCMK7ruWH4kYF.exe	netsh.exe
PID 1552 wrote to memory of 748	1552	myHCMK7ruWH4kYF.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

myHCMK7ruWH4kYF.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	myHCMK7ruWH4kYF.exe

outlook_win_path 1 IoCs

Processes:

myHCMK7ruWH4kYF.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	myHCMK7ruWH4kYF.exe

C:\Users\Admin\AppData\Local\Temp\myHCMK7ruWH4kYF.exe
"C:\Users\Admin\AppData\Local\Temp\myHCMK7ruWH4kYF.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1700

C:\Users\Admin\AppData\Local\Temp\myHCMK7ruWH4kYF.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:1552

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:748

MITRE ATT&CK Matrix ATT&CK 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

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/748-70-0x0000000000000000-mapping.dmp

Download
memory/1552-64-0x000000000044A9EE-mapping.dmp

Download
memory/1552-58-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1552-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1552-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1552-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1552-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1552-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1552-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1700-56-0x0000000000560000-0x0000000000568000-memory.dmp

Filesize
32KB

Download
memory/1700-57-0x0000000000C90000-0x0000000000CE6000-memory.dmp

Filesize
344KB

Download
memory/1700-54-0x0000000001260000-0x00000000012D0000-memory.dmp

Filesize
448KB

Download
memory/1700-55-0x0000000075841000-0x0000000075843000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads