agenttesla | 9404c7a99bcdde02f50e378d1dffad170426af7c1c5c545b2f6fd57de48ffad5

Analysis

max time kernel
69s
max time network
48s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 20:32

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General

Target

malware/EinTT.exe
Size

583KB
MD5

a4741e30b7b12d7b7ff728527bf7023e
SHA1

d8429912433ca80b1fde886c1e91af51abab5efe
SHA256

693b96514d1d57ee01269e74390bef130a9980cd91f8487cac6f3a89c4f18b25
SHA512

7532983d8d1ac79bfc1384320461ee807dbfd5399c82a01c2f86746adb50e614ab5ca85a466a512f9a9af0bab7cffabd98a2d37e5023815c2e3bfa962d360342
SSDEEP

6144:dO99nEZS3bUmSoiDnQtUcs99EwG4EJJjtnqN1+Wwv/UxTRJQF8gswo7r:wDEZfmwcAywwFxv/ifgf3E

Score

10^/10

agenttesla collection credential_access defense_evasion discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.mushko-ps.com
Port:
587
Username:
[email protected]
Password:
Uma335@Mps
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

System Binary Proxy Execution: InstallUtil 1 TTPs 2 IoCs

Abuse InstallUtil to proxy execution of malicious code.

defense_evasion

InstallUtil

T1218.004

Processes:

EinTT.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe	EinTT.exe
Key opened	\Registry\Machine\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Custom\InstallUtil.exe	EinTT.exe

Executes dropped EXE 1 IoCs

Processes:

InstallUtil.exe

pid process

3020 InstallUtil.exe
Loads dropped DLL 1 IoCs

Processes:

EinTT.exe

pid process

1820 EinTT.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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

pid	process
3020	InstallUtil.exe

pid	process
1820	EinTT.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

EinTT.exe

description pid process target process

PID 1820 set thread context of 3020 1820 EinTT.exe InstallUtil.exe

description	pid	process	target process
PID 1820 set thread context of 3020	1820	EinTT.exe	InstallUtil.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:

EinTT.exeInstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EinTT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

EinTT.exeInstallUtil.exe

pid process

1820 EinTT.exe
1820 EinTT.exe
3020 InstallUtil.exe
3020 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

EinTT.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1820 EinTT.exe
Token: SeDebugPrivilege 3020 InstallUtil.exe

pid	process
1820	EinTT.exe
1820	EinTT.exe
3020	InstallUtil.exe
3020	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1820	EinTT.exe
Token: SeDebugPrivilege	3020	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EinTT.exe

description	pid	process	target process
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe
PID 1820 wrote to memory of 3020	1820	EinTT.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\malware\EinTT.exe
"C:\Users\Admin\AppData\Local\Temp\malware\EinTT.exe"
1⤵
- System Binary Proxy Execution: InstallUtil
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

T1218

InstallUtil

T1218.004

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

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Downloads

\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/1820-19-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/1820-1-0x0000000000D50000-0x0000000000DE8000-memory.dmp

Filesize
608KB

Download
memory/1820-2-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/1820-3-0x0000000000200000-0x0000000000232000-memory.dmp

Filesize
200KB

Download
memory/1820-4-0x0000000000370000-0x0000000000386000-memory.dmp

Filesize
88KB

Download
memory/1820-6-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/1820-7-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/1820-8-0x00000000009A0000-0x00000000009BA000-memory.dmp

Filesize
104KB

Download
memory/1820-9-0x0000000000A00000-0x0000000000A06000-memory.dmp

Filesize
24KB

Download
memory/1820-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

Filesize
4KB

Download
memory/1820-27-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/3020-16-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3020-15-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3020-14-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3020-13-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3020-20-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3020-25-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3020-23-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3020-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3020-28-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/3020-29-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download
memory/3020-30-0x0000000074D40000-0x000000007542E000-memory.dmp

Filesize
6.9MB

Download