agenttesla | b0284d4d696cb05e92502441aa0499085ca3a1457935932fa40c677083932081

General

Target

$PLUGINSDIR/aiuxmmjtmkz.dll
Size

19KB
MD5

586dd640c4a64cdf876ac0bfe48ad870
SHA1

8f9704a440ee2fb56b0bfd2a2f9a5b2a3fa685f0
SHA256

206c1772141cc0ae68d1a3a317c1b4e5b2ece540322c211b6a37d65f100114cd
SHA512

984100b0309b9d2f3cdf783697a497cea4675aee9b2c4529ef20afd6bdf011f1240044bfda2af2f9bb98b98c45b03c6d72e98dda2da8a958d36f3229c9a0dc62
SSDEEP

192:6z+aLflYnmPwn5488nq3lfstCTJ28WzKKMih6rmvIQb/Wj0J43UESslEUwvyX2Rm:6zJBYew5JDstCToJTIi/W2slE5vYQHG

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1803146213:AAHYyCRx7FggQ9LfPbrIs79ZUWCEc9wNnDo/sendDocument

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

Processes:

resource	yara_rule
behavioral3/memory/2644-1-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral3/memory/2644-3-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral3/memory/2644-5-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral3/memory/2644-7-0x00000000002A0000-0x00000000002DC000-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

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1596 set thread context of 2644 1596 rundll32.exe rundll32.exe

description	pid	process	target process
PID 1596 set thread context of 2644	1596	rundll32.exe	rundll32.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

Processes:

rundll32.exerundll32.exe

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

Processes:

rundll32.exe

pid process

2644 rundll32.exe
2644 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2644 rundll32.exe

pid	process
2644	rundll32.exe
2644	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	2644	rundll32.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2628 wrote to memory of 1596	2628	rundll32.exe	rundll32.exe
PID 2628 wrote to memory of 1596	2628	rundll32.exe	rundll32.exe
PID 2628 wrote to memory of 1596	2628	rundll32.exe	rundll32.exe
PID 2628 wrote to memory of 1596	2628	rundll32.exe	rundll32.exe
PID 2628 wrote to memory of 1596	2628	rundll32.exe	rundll32.exe
PID 2628 wrote to memory of 1596	2628	rundll32.exe	rundll32.exe
PID 2628 wrote to memory of 1596	2628	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe
PID 1596 wrote to memory of 2644	1596	rundll32.exe	rundll32.exe

outlook_office_path 1 IoCs

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rundll32.exe

outlook_win_path 1 IoCs

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\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\aiuxmmjtmkz.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\aiuxmmjtmkz.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\aiuxmmjtmkz.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:2644

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

5

T1552

Credentials In Files

4

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

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1596-0-0x0000000010005000-0x0000000010007000-memory.dmp

Filesize
8KB

Download
memory/2644-1-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2644-3-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2644-5-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2644-6-0x00000000749DE000-0x00000000749DF000-memory.dmp

Filesize
4KB

Download
memory/2644-7-0x00000000002A0000-0x00000000002DC000-memory.dmp

Filesize
240KB

Download
memory/2644-8-0x00000000749D0000-0x00000000750BE000-memory.dmp

Filesize
6.9MB

Download
memory/2644-9-0x00000000749D0000-0x00000000750BE000-memory.dmp

Filesize
6.9MB

Download
memory/2644-11-0x00000000749D0000-0x00000000750BE000-memory.dmp

Filesize
6.9MB

Download
memory/2644-10-0x00000000749D0000-0x00000000750BE000-memory.dmp

Filesize
6.9MB

Download
memory/2644-12-0x00000000749DE000-0x00000000749DF000-memory.dmp

Filesize
4KB

Download
memory/2644-13-0x00000000749D0000-0x00000000750BE000-memory.dmp

Filesize
6.9MB

Download
memory/2644-14-0x00000000749D0000-0x00000000750BE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads