agenttesla | 2b3f4cc38db496db9fb26595087296fb5d9c0fe1114353ea8ffd8d4be1d5e4c6

General

Target

tmp.exe
Size

124KB
MD5

b5680d05c29db4aaac268573cd17a09b
SHA1

ac7706d6bad227adb8259aed7993febf85b87ed9
SHA256

2b3f4cc38db496db9fb26595087296fb5d9c0fe1114353ea8ffd8d4be1d5e4c6
SHA512

0abf232463e18148f95f614048e96975674155fcdbed7d3c31f95ebb7fc7d6d36f5ebbc907952971496995535ff49c73509b31853dc9d0776bf62468a333cae0

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.centraldefiltros.cl
Port:
587
Username:
[email protected]
Password:
icui4cu2@@
Email To:
[email protected]

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/3948-134-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

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:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	tmp.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

tmp.exe

description pid process target process

PID 4828 set thread context of 3948 4828 tmp.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

5104 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

tmp.exeMSBuild.exe

pid process

4828 tmp.exe
4828 tmp.exe
3948 MSBuild.exe
3948 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 4828 tmp.exe
Token: SeDebugPrivilege 3948 MSBuild.exe

description	pid	process	target process
PID 4828 set thread context of 3948	4828	tmp.exe	MSBuild.exe

pid	process
5104	timeout.exe

pid	process
4828	tmp.exe
4828	tmp.exe
3948	MSBuild.exe
3948	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	4828	tmp.exe
Token: SeDebugPrivilege	3948	MSBuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

tmp.execmd.exe

description	pid	process	target process
PID 4828 wrote to memory of 1060	4828	tmp.exe	cmd.exe
PID 4828 wrote to memory of 1060	4828	tmp.exe	cmd.exe
PID 4828 wrote to memory of 1060	4828	tmp.exe	cmd.exe
PID 1060 wrote to memory of 5104	1060	cmd.exe	timeout.exe
PID 1060 wrote to memory of 5104	1060	cmd.exe	timeout.exe
PID 1060 wrote to memory of 5104	1060	cmd.exe	timeout.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe
PID 4828 wrote to memory of 3948	4828	tmp.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4828

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 20
2⤵
- Suspicious use of WriteProcessMemory
PID:1060

C:\Windows\SysWOW64\timeout.exe
timeout 20
3⤵
- Delays execution with timeout.exe
PID:5104

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3948

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1060-131-0x0000000000000000-mapping.dmp

Download
memory/3948-133-0x0000000000000000-mapping.dmp

Download
memory/3948-134-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/3948-135-0x0000000005C80000-0x0000000006224000-memory.dmp

Filesize
5.6MB

Download
memory/3948-136-0x0000000005580000-0x0000000005612000-memory.dmp

Filesize
584KB

Download
memory/3948-137-0x0000000005620000-0x00000000056BC000-memory.dmp

Filesize
624KB

Download
memory/3948-138-0x0000000005C10000-0x0000000005C76000-memory.dmp

Filesize
408KB

Download
memory/3948-139-0x0000000001710000-0x0000000001760000-memory.dmp

Filesize
320KB

Download
memory/3948-140-0x0000000000DD0000-0x0000000000DDA000-memory.dmp

Filesize
40KB

Download
memory/4828-130-0x0000000000840000-0x0000000000864000-memory.dmp

Filesize
144KB

Download
memory/5104-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads