agenttesla | b37950e9376965942f8dddc16f447d9b93c7c286917c9371b0e83d06f7700bbc

General

Target

Documents.exe
Size

583KB
MD5

32f65b5608137599eb88b876132d1321
SHA1

233b379864856fbf578425af6143595c3b264382
SHA256

5f2517598649fe78e58966a15e9fea89e43ee57aa0ad6b779ef18be53eb39a2b
SHA512

26e6b68e113253339188c9c40358374385be4e68f323c045b09eac0d1e726ec8dfb596b2775125d60b57ec60185a2980b3069e9cd5bad44323c3215235c76f4b

Score

10^/10

agenttesla collection keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.1and1.com
Port:
587
Username:
usjobs@ramsoft.net
Password:
$Hari@prasad%2020

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/1312-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1312-63-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1312-64-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1312-65-0x0000000000446E4E-mapping.dmp	family_agenttesla
behavioral1/memory/1312-67-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1312-69-0x0000000000400000-0x000000000044C000-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/2040-58-0x00000000049A0000-0x00000000049F2000-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:

Documents.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	Documents.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Documents.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Documents.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Documents.exe

description pid process target process

PID 2040 set thread context of 1312 2040 Documents.exe Documents.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Documents.exeDocuments.exe

pid process

2040 Documents.exe
2040 Documents.exe
1312 Documents.exe
1312 Documents.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Documents.exeDocuments.exe

description pid process

Token: SeDebugPrivilege 2040 Documents.exe
Token: SeDebugPrivilege 1312 Documents.exe

description	pid	process	target process
PID 2040 set thread context of 1312	2040	Documents.exe	Documents.exe

pid	process
2040	Documents.exe
2040	Documents.exe
1312	Documents.exe
1312	Documents.exe

description	pid	process
Token: SeDebugPrivilege	2040	Documents.exe
Token: SeDebugPrivilege	1312	Documents.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Documents.exe

description	pid	process	target process
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe
PID 2040 wrote to memory of 1312	2040	Documents.exe	Documents.exe

outlook_office_path 1 IoCs

Processes:

Documents.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	Documents.exe

outlook_win_path 1 IoCs

Processes:

Documents.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	Documents.exe

C:\Users\Admin\AppData\Local\Temp\Documents.exe
"C:\Users\Admin\AppData\Local\Temp\Documents.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2040

C:\Users\Admin\AppData\Local\Temp\Documents.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1312

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/1312-64-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1312-59-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1312-60-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1312-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1312-63-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1312-65-0x0000000000446E4E-mapping.dmp

Download
memory/1312-67-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1312-69-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2040-55-0x0000000000580000-0x00000000005DC000-memory.dmp

Filesize
368KB

Download
memory/2040-56-0x0000000075191000-0x0000000075193000-memory.dmp

Filesize
8KB

Download
memory/2040-57-0x00000000004C0000-0x00000000004C8000-memory.dmp

Filesize
32KB

Download
memory/2040-58-0x00000000049A0000-0x00000000049F2000-memory.dmp

Filesize
328KB

Download
memory/2040-54-0x0000000001260000-0x00000000012F8000-memory.dmp

Filesize
608KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads