agenttesla | f3fb785e98809c6c4ea0ca8cb576c0603edfda221ba32a9dedb46cb91c663fd4

Analysis

max time kernel
106s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26-09-2024 13:34

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General

Target

purchase order (2).exe
Size

712KB
MD5

3b82ec5db945c6ec405ccc6bd6079e6a
SHA1

fe1bef4b53ffedd007e9fe294c63f3d4f535e88b
SHA256

ae98cbea751b110688b554259e94536ad47799d68af23f5c499f0021c09861b0
SHA512

c4636acbe51f2ad0762518065acd06a1d8a1ff1fb659919bf372a9a7a0a585d915110e4f4bace909d3e91078ef4c2afe23cb99c44e07e0b9e8a75d7ba839b152
SSDEEP

12288:p6udAV8HAFm++rHsI19PJ+arP9wJNyowhUr/RQRTqaACB+x77IJfi3H:yGAFmRrHsQ9IkP9k/wsCB+xos

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.yitaipackaging.com
Port:
587
Username:
[email protected]
Password:
22799213

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.yitaipackaging.com
Port:
587
Username:
[email protected]
Password:
22799213

Signatures

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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	purchase order (2).exe

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	purchase order (2).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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase order (2).exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase order (2).exe
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase order (2).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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gKWBf = "C:\\Users\\Admin\\AppData\\Roaming\\gKWBf\\gKWBf.exe"	purchase order (2).exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3508 set thread context of 4048	3508	purchase order (2).exe	94

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 4 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	purchase order (2).exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	purchase order (2).exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	REG.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
2748	REG.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
4524	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3508	purchase order (2).exe
3508	purchase order (2).exe
3508	purchase order (2).exe
3508	purchase order (2).exe
4048	purchase order (2).exe
4048	purchase order (2).exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3508	purchase order (2).exe
Token: SeDebugPrivilege	4048	purchase order (2).exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3508 wrote to memory of 4524	3508	purchase order (2).exe	92
PID 3508 wrote to memory of 4524	3508	purchase order (2).exe	92
PID 3508 wrote to memory of 4524	3508	purchase order (2).exe	92
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 3508 wrote to memory of 4048	3508	purchase order (2).exe	94
PID 4048 wrote to memory of 2748	4048	purchase order (2).exe	95
PID 4048 wrote to memory of 2748	4048	purchase order (2).exe	95
PID 4048 wrote to memory of 2748	4048	purchase order (2).exe	95

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase order (2).exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	purchase order (2).exe

C:\Users\Admin\AppData\Local\Temp\purchase order (2).exe
"C:\Users\Admin\AppData\Local\Temp\purchase order (2).exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3508
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YKtXZOWu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE43.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4524
- C:\Users\Admin\AppData\Local\Temp\purchase order (2).exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:4048
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry key
    PID:2748

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_v4.0_32\UsageLogs\purchase order (2).exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE43.tmp

Filesize
1KB

MD5
2e9672d0377392991a385274b9505212

SHA1
392726de709a72daab2f9da6df08a6d923858289

SHA256
87d10e5b32eedf0cee99b4ec76e3e04b6cef8c659b332362c450a1aa640fbc05

SHA512
982d41aa65f387613dacc9a67631e0fea33e7c2f8833062a61c02a6855d88c7996450cf7df9b4a9c44b0406e2a2e69572d1057c59efe43c135e17df3f71377a8

Download Submit
memory/3508-6-0x0000000005270000-0x0000000005282000-memory.dmp

Filesize
72KB

Download
memory/3508-4-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/3508-2-0x00000000056D0000-0x0000000005C74000-memory.dmp

Filesize
5.6MB

Download
memory/3508-5-0x00000000050B0000-0x00000000050BA000-memory.dmp

Filesize
40KB

Download
memory/3508-0-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/3508-7-0x000000007487E000-0x000000007487F000-memory.dmp

Filesize
4KB

Download
memory/3508-8-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/3508-9-0x0000000006A80000-0x0000000006AFA000-memory.dmp

Filesize
488KB

Download
memory/3508-1-0x00000000006D0000-0x0000000000788000-memory.dmp

Filesize
736KB

Download
memory/3508-11-0x000000000C630000-0x000000000C6CC000-memory.dmp

Filesize
624KB

Download
memory/3508-18-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/3508-3-0x0000000005000000-0x0000000005092000-memory.dmp

Filesize
584KB

Download
memory/3508-10-0x00000000090A0000-0x0000000009110000-memory.dmp

Filesize
448KB

Download
memory/4048-19-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/4048-28-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/4048-20-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/4048-21-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/4048-22-0x00000000053D0000-0x00000000053E8000-memory.dmp

Filesize
96KB

Download
memory/4048-23-0x0000000006160000-0x00000000061C6000-memory.dmp

Filesize
408KB

Download
memory/4048-25-0x00000000067A0000-0x00000000067F0000-memory.dmp

Filesize
320KB

Download
memory/4048-27-0x0000000074870000-0x0000000075020000-memory.dmp

Filesize
7.7MB

Download
memory/4048-15-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download