agenttesla | 1ebcadef0f2790a5c28cc8d6100007eb6a82a0cf7fc582e7595fa9a3407d3049

Analysis

max time kernel
98s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2024 17:36

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General

Target

$PLUGINSDIR/wfonpw4.dll
Size

5KB
MD5

2352a10c7c964ab3ab072f17a78cb77f
SHA1

a41c5d247420909bb3a3565dd552990258904f02
SHA256

271f00c08e8dbf27f0b36e27df2aa07be3e4492940118ae3e43758a812d7e370
SHA512

14634bebdd077a674b02bb9548588868ca56145e497fea67be211bd2887bec65b02c75f7edafdbff0d976ff9a424f8acc1ba0ab4244a1b86ebeb640ceb8c41d4
SSDEEP

48:aiGzDn1ASkT3jNDZbitP8Xr0EVg56F22/vtq1nh/SS72+DtMYquSzieLURuqS:/8n1ASknNDZ+tw0Eem2Rf2otsJzKx

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Signatures

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

AgentTesla payload 4 IoCs

resource	yara_rule
behavioral12/memory/4680-2-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral12/memory/4680-3-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral12/memory/4680-4-0x0000000000400000-0x000000000044B000-memory.dmp	family_agenttesla
behavioral12/memory/4680-5-0x0000000000400000-0x000000000044B000-memory.dmp	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
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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\riaagitukgs = "C:\\Users\\Admin\\AppData\\Roaming\\ptdrpxuyhk\\siusbbxdxbkm.exe"	rundll32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3412 set thread context of 4680	3412	rundll32.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4276	3412	WerFault.exe	82

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4680	rundll32.exe
4680	rundll32.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3412	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4680	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 3572 wrote to memory of 3412	3572	rundll32.exe	82
PID 3572 wrote to memory of 3412	3572	rundll32.exe	82
PID 3572 wrote to memory of 3412	3572	rundll32.exe	82
PID 3412 wrote to memory of 4680	3412	rundll32.exe	83
PID 3412 wrote to memory of 4680	3412	rundll32.exe	83
PID 3412 wrote to memory of 4680	3412	rundll32.exe	83
PID 3412 wrote to memory of 4680	3412	rundll32.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\wfonpw4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3572
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\wfonpw4.dll,#1
  2⤵
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3412
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\wfonpw4.dll,#1
    3⤵
    - Accesses Microsoft Outlook profiles
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4680
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 756
    3⤵
    - Program crash
    PID:4276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3412 -ip 3412
1⤵
PID:3388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

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

Replay Monitor

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Downloads

memory/3412-0-0x00000000021C0000-0x00000000021C3000-memory.dmp

Filesize
12KB

Download
memory/4680-2-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/4680-3-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/4680-4-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/4680-5-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/4680-6-0x0000000074862000-0x0000000074863000-memory.dmp

Filesize
4KB

Download
memory/4680-7-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-8-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-9-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-10-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-11-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-12-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-13-0x0000000074862000-0x0000000074863000-memory.dmp

Filesize
4KB

Download
memory/4680-14-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-15-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-16-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download
memory/4680-17-0x0000000074860000-0x0000000074E11000-memory.dmp

Filesize
5.7MB

Download