agenttesla | a4ee7245c26b8c1a3cbfc76f09784ecc5afff56472e1fee2abc03550ab4c2737

General

Target

Ch2sZ3JEobY0pea.exe
Size

413KB
MD5

173056e19556d0588365ede4e8080733
SHA1

599f827a51bf2de5af85f2d10ebae4a89901ae12
SHA256

3f8c2a8d34d7d3f61451ea1beb9d9671cc50aa2cbe39d700a08d0215b8b7163b
SHA512

611ecdaca3886d2a6b070ef9b7f58dee5ff40ba7a37934324e25c8d94d2c04475941a220b5e323883a596f947cb31f39bcb06dac879dc007e121a3e5b9f669d4

Score

10^/10

agenttesla collection keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.lettu.us
Port:
587
Username:
hr@lettu.us
Password:
western2020@

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/988-60-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/988-61-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/988-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/988-63-0x0000000000447C2E-mapping.dmp	family_agenttesla
behavioral1/memory/988-65-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/988-67-0x0000000000400000-0x000000000044C000-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/1640-56-0x0000000000B60000-0x0000000000BB4000-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:

Ch2sZ3JEobY0pea.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	Ch2sZ3JEobY0pea.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Ch2sZ3JEobY0pea.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Ch2sZ3JEobY0pea.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Ch2sZ3JEobY0pea.exe

description pid process target process

PID 1640 set thread context of 988 1640 Ch2sZ3JEobY0pea.exe Ch2sZ3JEobY0pea.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Ch2sZ3JEobY0pea.exe

pid process

988 Ch2sZ3JEobY0pea.exe
988 Ch2sZ3JEobY0pea.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Ch2sZ3JEobY0pea.exe

description pid process

Token: SeDebugPrivilege 988 Ch2sZ3JEobY0pea.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Ch2sZ3JEobY0pea.exe

pid process

988 Ch2sZ3JEobY0pea.exe

description	pid	process	target process
PID 1640 set thread context of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe

pid	process
988	Ch2sZ3JEobY0pea.exe
988	Ch2sZ3JEobY0pea.exe

description	pid	process
Token: SeDebugPrivilege	988	Ch2sZ3JEobY0pea.exe

pid	process
988	Ch2sZ3JEobY0pea.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Ch2sZ3JEobY0pea.exe

description	pid	process	target process
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe
PID 1640 wrote to memory of 988	1640	Ch2sZ3JEobY0pea.exe	Ch2sZ3JEobY0pea.exe

outlook_office_path 1 IoCs

Processes:

Ch2sZ3JEobY0pea.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	Ch2sZ3JEobY0pea.exe

outlook_win_path 1 IoCs

Processes:

Ch2sZ3JEobY0pea.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	Ch2sZ3JEobY0pea.exe

C:\Users\Admin\AppData\Local\Temp\Ch2sZ3JEobY0pea.exe
"C:\Users\Admin\AppData\Local\Temp\Ch2sZ3JEobY0pea.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1640

C:\Users\Admin\AppData\Local\Temp\Ch2sZ3JEobY0pea.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:988

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/988-57-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/988-58-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/988-60-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/988-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/988-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/988-63-0x0000000000447C2E-mapping.dmp

Download
memory/988-65-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/988-67-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/988-68-0x0000000076241000-0x0000000076243000-memory.dmp

Filesize
8KB

Download
memory/1640-54-0x0000000000CF0000-0x0000000000D5E000-memory.dmp

Filesize
440KB

Download
memory/1640-55-0x0000000000610000-0x0000000000620000-memory.dmp

Filesize
64KB

Download
memory/1640-56-0x0000000000B60000-0x0000000000BB4000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads