agenttesla | 789515333444e7d9da1f03898b20e0bbc929d1ed1a26ec2c1f33c323497cb614

General

Target

Untitle00000002344.exe
Size

568KB
MD5

e72869ffdbb61adb38fc0d7b96113fdf
SHA1

f3ac996f6cca1e21a6993cdbd2711f01bd39803f
SHA256

0239e6b1f17ada8657c6c66068da875641fd244d3586b9e16c5dc5d2208917f3
SHA512

b3fe01ccd7a46bb76a1e5fd8deeb2151c01327c4d30e3eb2f33b7841b55541bfca2ea3b3150cf1ff0519f4e8de1a51a0cc9e9b032d4721c101ae1770d6ff4133

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.leffamatrizes.com.br
Port:
587
Username:
[email protected]
Password:
amx1020

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1988-137-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

Untitle00000002344.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts Untitle00000002344.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Untitle00000002344.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Untitle00000002344.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	Untitle00000002344.exe

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:

Untitle00000002344.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Untitle00000002344.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Untitle00000002344.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Untitle00000002344.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Untitle00000002344.exe

description pid process target process

PID 2416 set thread context of 1988 2416 Untitle00000002344.exe Untitle00000002344.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3536 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

2768 REG.exe

description	pid	process	target process
PID 2416 set thread context of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe

pid	process
3536	schtasks.exe

pid	process
2768	REG.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Untitle00000002344.exeUntitle00000002344.exe

pid	process
2416	Untitle00000002344.exe
2416	Untitle00000002344.exe
2416	Untitle00000002344.exe
2416	Untitle00000002344.exe
1988	Untitle00000002344.exe
1988	Untitle00000002344.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Untitle00000002344.exeUntitle00000002344.exe

description pid process

Token: SeDebugPrivilege 2416 Untitle00000002344.exe
Token: SeDebugPrivilege 1988 Untitle00000002344.exe

description	pid	process
Token: SeDebugPrivilege	2416	Untitle00000002344.exe
Token: SeDebugPrivilege	1988	Untitle00000002344.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Untitle00000002344.exeUntitle00000002344.exe

description	pid	process	target process
PID 2416 wrote to memory of 3536	2416	Untitle00000002344.exe	schtasks.exe
PID 2416 wrote to memory of 3536	2416	Untitle00000002344.exe	schtasks.exe
PID 2416 wrote to memory of 3536	2416	Untitle00000002344.exe	schtasks.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 2416 wrote to memory of 1988	2416	Untitle00000002344.exe	Untitle00000002344.exe
PID 1988 wrote to memory of 2768	1988	Untitle00000002344.exe	REG.exe
PID 1988 wrote to memory of 2768	1988	Untitle00000002344.exe	REG.exe
PID 1988 wrote to memory of 2768	1988	Untitle00000002344.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

Untitle00000002344.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Untitle00000002344.exe

outlook_win_path 1 IoCs

Processes:

Untitle00000002344.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Untitle00000002344.exe

C:\Users\Admin\AppData\Local\Temp\Untitle00000002344.exe
"C:\Users\Admin\AppData\Local\Temp\Untitle00000002344.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2416

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pWbaTmlZq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3642.tmp"
2⤵
- Creates scheduled task(s)
PID:3536

C:\Users\Admin\AppData\Local\Temp\Untitle00000002344.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1988

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
3⤵
- Modifies registry key
PID:2768

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3642.tmp

Filesize
1KB

MD5
5b0f81a4100610bcd1a53dcf0afde29c

SHA1
90f84ab32731052f04e533c8fa0b71d1cbae0454

SHA256
2bfdb677f3f7cf78dafb7b3584aabe981dc429069d31b2fccab90809396e3d72

SHA512
4f937f5e0f0ee9f1caf4589e1d7bd9fa53f03700556e1ed3cdb2338b237a1c44fc7c20d57fc7a5073a2d282656186cd251424a15b340a0d875e35c15fbac28db

Download Submit
memory/1988-136-0x0000000000000000-mapping.dmp

Download
memory/1988-137-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1988-138-0x0000000005FB0000-0x0000000006016000-memory.dmp

Filesize
408KB

Download
memory/1988-139-0x0000000006D20000-0x0000000006D70000-memory.dmp

Filesize
320KB

Download
memory/1988-141-0x0000000007010000-0x000000000701A000-memory.dmp

Filesize
40KB

Download
memory/2416-130-0x0000000000BA0000-0x0000000000C34000-memory.dmp

Filesize
592KB

Download
memory/2416-131-0x0000000005C10000-0x00000000061B4000-memory.dmp

Filesize
5.6MB

Download
memory/2416-132-0x0000000005660000-0x00000000056F2000-memory.dmp

Filesize
584KB

Download
memory/2416-133-0x0000000006360000-0x00000000063FC000-memory.dmp

Filesize
624KB

Download
memory/2768-140-0x0000000000000000-mapping.dmp

Download
memory/3536-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads