agenttesla | dfcb72a291ce5f265c39116b1cb7d7555161221bcfb6a6b3ff93c164bffd9328

Analysis

max time kernel
94s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19-09-2024 17:53

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General

Target

P I.exe
Size

475KB
MD5

0b2a4749b78b77dd87d0ade738a3d810
SHA1

24242da77a09130fa9fe855193c8633a533ee0c2
SHA256

27a17a1a1ea5a6fe28d30022d246f75e80942a6a9cbe483f87f8b6c103d39a8f
SHA512

3522f35c3aa16530b7bf4d7df41746eb07efbe78884d158b10fdd30da8fb39a1c3383707736ea4c3b3728c681ea5889261b38396609c9c215e591e23ed249d17
SSDEEP

12288:fBvSZEgn05KW+z6p0IR4BOF2ZmFVdLdgBIwsB5cNuu2iN:fBvPc9WIGFcOQAdJhZ5cNl1

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.flsrnidth.com
Port:
587
Username:
[email protected]
Password:
x{Op,7(4O+yl

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	P I.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 2 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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P I.exe
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P I.exe
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P I.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YYtJku = "C:\\Users\\Admin\\AppData\\Roaming\\YYtJku\\YYtJku.exe"	P I.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2948 set thread context of 3408	2948	P I.exe	92

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 3 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	P I.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	P I.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
668	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3408	P I.exe
3408	P I.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3408	P I.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3408	P I.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 668	2948	P I.exe	90
PID 2948 wrote to memory of 668	2948	P I.exe	90
PID 2948 wrote to memory of 668	2948	P I.exe	90
PID 2948 wrote to memory of 3408	2948	P I.exe	92
PID 2948 wrote to memory of 3408	2948	P I.exe	92
PID 2948 wrote to memory of 3408	2948	P I.exe	92
PID 2948 wrote to memory of 3408	2948	P I.exe	92
PID 2948 wrote to memory of 3408	2948	P I.exe	92
PID 2948 wrote to memory of 3408	2948	P I.exe	92
PID 2948 wrote to memory of 3408	2948	P I.exe	92
PID 2948 wrote to memory of 3408	2948	P I.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P I.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	P I.exe

C:\Users\Admin\AppData\Local\Temp\P I.exe
"C:\Users\Admin\AppData\Local\Temp\P I.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jwgRgKeTJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED4E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:668
- C:\Users\Admin\AppData\Local\Temp\P I.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\P I.exe.log

Filesize
408B

MD5
cd29580176e5cd2cfe25c32540a031b1

SHA1
844900a54849d4622a80fe6e1f60fa570d016d43

SHA256
2ad488ddea8fa2bcdbafade2495ea5573ab36eb0d84dcf171c600514e3078a52

SHA512
28d1b9056572d99e99b31acbcb5b76ba9d546d8527cd666837df40018afb8a3292055428ea7516ba8b98c43d887c82c2456f4dd664d39a73b7c13b0f6d3c528e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpED4E.tmp

Filesize
1KB

MD5
0e2ebbc360df9534c9314bfee3acce34

SHA1
f7c6b4d1509cd954e1b8f076f7e27c37dd2d329a

SHA256
42e6a20bc1ddee712e70c4588c3dfca6af0bd937c9076f0a9e6cdb7d1fb81dd3

SHA512
1c43068bb484757cdd78e40ca7c81adc55548636b961d6268a0e4d730a1b3247672e1a5e283581b1b9aa3c04949dad697317f4cb88989360ae10fdd5f1d004c5

Download Submit
memory/2948-0-0x0000000074B12000-0x0000000074B13000-memory.dmp

Filesize
4KB

Download
memory/2948-1-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/2948-2-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/2948-3-0x0000000074B12000-0x0000000074B13000-memory.dmp

Filesize
4KB

Download
memory/2948-4-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/2948-14-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-13-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-10-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3408-15-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-16-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-17-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-19-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-20-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download
memory/3408-21-0x0000000074B10000-0x00000000750C1000-memory.dmp

Filesize
5.7MB

Download