agenttesla | 139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb

General

Target

139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe
Size

586KB
MD5

13585cb3abbdb8cb2af00c06e68a9160
SHA1

e8c314eb378d07923416acec105f9becd96f5633
SHA256

139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb
SHA512

7bec4f5549e2e507a098bd1f3b106f3b6e4a2855a325944c57c79d3071fe86e710ed8549b1d1c28d0d79a46efcc85c17d39a120afb76b525c2b9dfda6a7b99fb
SSDEEP

12288:gy8zFu29/XBNc21ZENyxS9RgLR8bWxQjrMC5XK3MEgcngxJ0OO6tQ:gy8H/xNc21yN39RkyqxMKk70x

Score

10^/10

agenttesla discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.skylinemaritime.net
Port:
587
Username:
[email protected]
Password:
js5C(,jsKG?]
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla
Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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
T1552.001
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
15	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2396 set thread context of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83

System Location Discovery: System Language Discovery 1 TTPs 1 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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
840	regasm.exe
840	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	840	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 840	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	83
PID 2396 wrote to memory of 1812	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	84
PID 2396 wrote to memory of 1812	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	84
PID 2396 wrote to memory of 1812	2396	139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe	84

C:\Users\Admin\AppData\Local\Temp\139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe
"C:\Users\Admin\AppData\Local\Temp\139fd1439e11304883853f37ee9f4bcdc0e85c9cd7415a794fd61fde62957bfb.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2396
- 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:840
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:1812

Network

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

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/840-10-0x0000000005E70000-0x0000000005EC0000-memory.dmp

Filesize
320KB

Download
memory/840-14-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/840-13-0x000000007502E000-0x000000007502F000-memory.dmp

Filesize
4KB

Download
memory/840-12-0x0000000005EF0000-0x0000000005EFA000-memory.dmp

Filesize
40KB

Download
memory/840-4-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/840-5-0x000000007502E000-0x000000007502F000-memory.dmp

Filesize
4KB

Download
memory/840-6-0x00000000050D0000-0x0000000005674000-memory.dmp

Filesize
5.6MB

Download
memory/840-7-0x0000000004AA0000-0x0000000004B06000-memory.dmp

Filesize
408KB

Download
memory/840-8-0x0000000075020000-0x00000000757D0000-memory.dmp

Filesize
7.7MB

Download
memory/840-11-0x0000000005F60000-0x0000000005FF2000-memory.dmp

Filesize
584KB

Download
memory/2396-3-0x00007FFDF1C10000-0x00007FFDF26D1000-memory.dmp

Filesize
10.8MB

Download
memory/2396-9-0x00007FFDF1C10000-0x00007FFDF26D1000-memory.dmp

Filesize
10.8MB

Download
memory/2396-0-0x0000015627F70000-0x0000015628006000-memory.dmp

Filesize
600KB

Download
memory/2396-2-0x0000015642410000-0x00000156424A4000-memory.dmp

Filesize
592KB

Download
memory/2396-1-0x00007FFDF1C13000-0x00007FFDF1C15000-memory.dmp

Filesize
8KB

Download

Analysis

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