agenttesla | a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948f

General

Target

a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe
Size

2.2MB
MD5

20536d622fb95bee3d87757e3efa74e0
SHA1

14e098d669f3f38235ad3152c0e5c45d20a827e0
SHA256

a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948f
SHA512

3c3fae25813c46e8990c63af25b5d160e6db594d525bf3423e6e9f7985f5fc50853e6b122f2ddf185361d2a656ceb01a5475668ff838b68e87531eb2dbf6546a
SSDEEP

49152:D3ASbdYAm4zEbdYAm4zWbdYAm4z23Ag3AWbdYAm4zSbdYAm4zO3AnMWc:rA4drWdr0drkASA0dr4dr8An

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.controlfire.com.mx
Port:
21
Username:
usufffaz@controlfire.com.mx
Password:
0a4XlE=4t8mz

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla
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
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3020 set thread context of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2732	regasm.exe
2732	regasm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2732	regasm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30
PID 3020 wrote to memory of 2732	3020	a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe	30

C:\Users\Admin\AppData\Local\Temp\a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe
"C:\Users\Admin\AppData\Local\Temp\a3a54505cb30e3eda94163b884011c9547bdf83ffdb0cd83dbff798c5345948fN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2732

Network

DNS

ip-api.com

regasm.exe

Remote address:

8.8.8.8:53

Request

ip-api.com

IN A

Response

ip-api.com

IN A

208.95.112.1
DNS

ip-api.com

regasm.exe

Remote address:

8.8.8.8:53

Request

ip-api.com

IN A
GET

http://ip-api.com/line/?fields=hosting

regasm.exe

Remote address:

208.95.112.1:80

Request

GET /line/?fields=hosting HTTP/1.1
Host: ip-api.com
Connection: Keep-Alive

Response

HTTP/1.1 200 OK

Date: Mon, 13 Jan 2025 16:02:04 GMT
Content-Type: text/plain; charset=utf-8
Content-Length: 6
Access-Control-Allow-Origin: *
X-Ttl: 60
X-Rl: 44

208.95.112.1:80

http://ip-api.com/line/?fields=hosting

http

regasm.exe

460 B
777 B
8
6

HTTP Request

GET http://ip-api.com/line/?fields=hosting

HTTP Response

200

8.8.8.8:53

ip-api.com

dns

regasm.exe

112 B
72 B
2
1

DNS Request

ip-api.com

DNS Request

ip-api.com

DNS Response

208.95.112.1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/2732-38-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2732-45-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/2732-40-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2732-42-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3020-33-0x0000000003300000-0x0000000003530000-memory.dmp

Filesize
2.2MB

Download
memory/3020-8-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/3020-2-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/3020-37-0x0000000003300000-0x0000000003530000-memory.dmp

Filesize
2.2MB

Download
memory/3020-9-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/3020-43-0x0000000003300000-0x0000000003530000-memory.dmp

Filesize
2.2MB

Download
memory/3020-11-0x0000000003300000-0x0000000003530000-memory.dmp

Filesize
2.2MB

Download
memory/3020-10-0x000000000330E000-0x000000000330F000-memory.dmp

Filesize
4KB

Download
memory/3020-7-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

HTTP Request

HTTP Response

DNS Request

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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Downloads

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