agenttesla | 65808985955d6c5df16a4679a0fca5437ab7b2a07eb55c240de1b8d22ae3b8c3

General

Target

65808985955d6c5df16a4679a0fca5437ab7b2a07eb55c240de1b8d22ae3b8c3.ps1
Size

384KB
MD5

5c540d4108cce10839d48d7a8ba97c11
SHA1

cf410d7dfe50cbebec376464968a1a6035f778f1
SHA256

65808985955d6c5df16a4679a0fca5437ab7b2a07eb55c240de1b8d22ae3b8c3
SHA512

7098674e66ab8761e37f2aa4382e0bdb363605bfea0712b8ef8767809d1baae03ff97023f07e17555a9da09162260261294b8a63049ac48bc76448f6844b5e0b
SSDEEP

6144:iz/Q0tevGcnK8XXHRSR0aiZd1kHY9LrNi76Dl6WiCAqeHbqg/dz71:A4yApnlXx40rr10sLrQ7W6ZCALqgVP1

Score

10^/10

agenttesla discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: ftp
Host:
ftp://ftp.antoniomayol.com:21
Port:
21
Username:
[email protected]
Password:
cMhKDQUk1{;%

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1624	x.exe

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
12	ip-api.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1624 set thread context of 116	1624	x.exe	84

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3764	powershell.exe

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	x.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3764	powershell.exe
3764	powershell.exe
116	RegAsm.exe
116	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3764	powershell.exe
Token: SeDebugPrivilege	116	RegAsm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3764 wrote to memory of 1624	3764	powershell.exe	83
PID 3764 wrote to memory of 1624	3764	powershell.exe	83
PID 3764 wrote to memory of 1624	3764	powershell.exe	83
PID 1624 wrote to memory of 116	1624	x.exe	84
PID 1624 wrote to memory of 116	1624	x.exe	84
PID 1624 wrote to memory of 116	1624	x.exe	84
PID 1624 wrote to memory of 116	1624	x.exe	84
PID 1624 wrote to memory of 116	1624	x.exe	84
PID 1624 wrote to memory of 116	1624	x.exe	84
PID 1624 wrote to memory of 116	1624	x.exe	84
PID 1624 wrote to memory of 116	1624	x.exe	84

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\65808985955d6c5df16a4679a0fca5437ab7b2a07eb55c240de1b8d22ae3b8c3.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3764
- C:\Users\Admin\AppData\Local\Temp\x.exe
  "C:\Users\Admin\AppData\Local\Temp\x.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tg0gc5xn.hdl.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\x.exe

Filesize
288KB

MD5
10454890a3d7c7c0b7ec0bf7018141e4

SHA1
167ab9a5a9e0c56689f73d894a397b9c176701df

SHA256
91fee98b5957d145f144b61107ea0283fc3e02eb7e19b432e868ee45ffdc528e

SHA512
20518fd44aff080fddac3a508bcc3b29336ea87c868bd0faf639726b36479de4562ec639e425dbe06234ba5b4629da84b37228b199f8497a7777d36638f77e04

Download Submit
memory/116-30-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/116-37-0x00000000068D0000-0x00000000068DA000-memory.dmp

Filesize
40KB

Download
memory/116-36-0x0000000006940000-0x00000000069D2000-memory.dmp

Filesize
584KB

Download
memory/116-35-0x0000000006850000-0x00000000068A0000-memory.dmp

Filesize
320KB

Download
memory/116-34-0x0000000005580000-0x00000000055E6000-memory.dmp

Filesize
408KB

Download
memory/116-33-0x0000000005BF0000-0x0000000006194000-memory.dmp

Filesize
5.6MB

Download
memory/1624-28-0x0000000000480000-0x00000000004D0000-memory.dmp

Filesize
320KB

Download
memory/1624-29-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/1624-32-0x0000000074F70000-0x0000000075720000-memory.dmp

Filesize
7.7MB

Download
memory/1624-27-0x0000000074F7E000-0x0000000074F7F000-memory.dmp

Filesize
4KB

Download
memory/3764-0-0x00007FFBD2923000-0x00007FFBD2925000-memory.dmp

Filesize
8KB

Download
memory/3764-26-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/3764-12-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/3764-11-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

Filesize
10.8MB

Download
memory/3764-1-0x0000022774E60000-0x0000022774E82000-memory.dmp

Filesize
136KB

Download

Analysis

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