agenttesla | 1ba7e9828126535c018bbce43f186023ca6a306739ec2dd41893888ef3b32861

General

Target

CL00485Q1902589CLSCTB.exe
Size

512KB
MD5

c608f248429afc058f2a9b0ba3a3e98f
SHA1

46b3668dc85850542e96bab175a4c23d34d1155e
SHA256

8d47f598292fe9256f28a9b23751612ba420e885d9cf09fb8d389fb2b53ea5ac
SHA512

7770b281d9d6ef400d476cf78c95e6cc192b2842d7628354df25223e1d45056f60aa11ae22ea0766552eb75cc91c24b79330c8c70fb77b34e3cc83651443040a

Score

10^/10

agenttesla snakebot collection coreentity keylogger rezer0 snakebot spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
amblessed22

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/388-56-0x0000000000980000-0x0000000000988000-memory.dmp	coreentity

SnakeBOT
SnakeBOT is a heavily obfuscated .NET downloader.
snakebot

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1696-62-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1696-61-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1696-63-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1696-64-0x000000000044AA9E-mapping.dmp	family_agenttesla
behavioral1/memory/1696-66-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral1/memory/1696-68-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla

Contains SnakeBOT related strings 1 IoCs

snakebot

Processes:

resource	yara_rule
behavioral1/memory/388-54-0x0000000000C30000-0x0000000000CBA000-memory.dmp	snakebot_strings

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/388-57-0x0000000007560000-0x00000000075B6000-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:

CL00485Q1902589CLSCTB.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CL00485Q1902589CLSCTB.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CL00485Q1902589CLSCTB.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CL00485Q1902589CLSCTB.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

CL00485Q1902589CLSCTB.exe

description pid process target process

PID 388 set thread context of 1696 388 CL00485Q1902589CLSCTB.exe CL00485Q1902589CLSCTB.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

CL00485Q1902589CLSCTB.exe

pid process

1696 CL00485Q1902589CLSCTB.exe
1696 CL00485Q1902589CLSCTB.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

CL00485Q1902589CLSCTB.exeCL00485Q1902589CLSCTB.exe

description pid process

Token: SeDebugPrivilege 388 CL00485Q1902589CLSCTB.exe
Token: SeDebugPrivilege 1696 CL00485Q1902589CLSCTB.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

CL00485Q1902589CLSCTB.exeCL00485Q1902589CLSCTB.exe

pid process

388 CL00485Q1902589CLSCTB.exe
388 CL00485Q1902589CLSCTB.exe
1696 CL00485Q1902589CLSCTB.exe

description	pid	process	target process
PID 388 set thread context of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe

pid	process
1696	CL00485Q1902589CLSCTB.exe
1696	CL00485Q1902589CLSCTB.exe

description	pid	process
Token: SeDebugPrivilege	388	CL00485Q1902589CLSCTB.exe
Token: SeDebugPrivilege	1696	CL00485Q1902589CLSCTB.exe

pid	process
388	CL00485Q1902589CLSCTB.exe
388	CL00485Q1902589CLSCTB.exe
1696	CL00485Q1902589CLSCTB.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

CL00485Q1902589CLSCTB.exeCL00485Q1902589CLSCTB.exe

description	pid	process	target process
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 388 wrote to memory of 1696	388	CL00485Q1902589CLSCTB.exe	CL00485Q1902589CLSCTB.exe
PID 1696 wrote to memory of 1704	1696	CL00485Q1902589CLSCTB.exe	netsh.exe
PID 1696 wrote to memory of 1704	1696	CL00485Q1902589CLSCTB.exe	netsh.exe
PID 1696 wrote to memory of 1704	1696	CL00485Q1902589CLSCTB.exe	netsh.exe
PID 1696 wrote to memory of 1704	1696	CL00485Q1902589CLSCTB.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

CL00485Q1902589CLSCTB.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CL00485Q1902589CLSCTB.exe

outlook_win_path 1 IoCs

Processes:

CL00485Q1902589CLSCTB.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	CL00485Q1902589CLSCTB.exe

C:\Users\Admin\AppData\Local\Temp\CL00485Q1902589CLSCTB.exe
"C:\Users\Admin\AppData\Local\Temp\CL00485Q1902589CLSCTB.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:388
- C:\Users\Admin\AppData\Local\Temp\CL00485Q1902589CLSCTB.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:1696
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:1704

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/388-54-0x0000000000C30000-0x0000000000CBA000-memory.dmp

Filesize
552KB

Download
memory/388-55-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/388-56-0x0000000000980000-0x0000000000988000-memory.dmp

Filesize
32KB

Download
memory/388-57-0x0000000007560000-0x00000000075B6000-memory.dmp

Filesize
344KB

Download
memory/1696-58-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1696-59-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1696-62-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1696-61-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1696-63-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1696-64-0x000000000044AA9E-mapping.dmp

Download
memory/1696-66-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1696-68-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1704-70-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads