agenttesla | 153b42776cc381b3e5e8e7850458b76b94682a533de0dedfa20e36f59ea462f0

General

Target

b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Size

488KB
MD5

b9fa9fee75d0c5d2631a2f14e19adcb4
SHA1

e87b7192cd2e2aa4b67f4c1acaf2cab0a8346d21
SHA256

153b42776cc381b3e5e8e7850458b76b94682a533de0dedfa20e36f59ea462f0
SHA512

8001f93c3e0759d6f59c598f950cfb692f84ecbe67bfdc79882c8c76c93ccdaa9ca9940b85123dd5647e65d04de280c453d092b21da0853ede9f0c53f8469d23
SSDEEP

12288:FZk/A/bfHSLuRwe3NBZwn51gJHI39wxbF:FZiA/rSL/4BZ8g

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.tehnolinks.net
Port:
587
Username:
[email protected]
Password:
wjmBPaC1

Signatures

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

AgentTesla payload 7 IoCs

resource	yara_rule
behavioral1/memory/1848-14-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1848-12-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1848-18-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1848-22-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1848-20-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2948-23-0x0000000002550000-0x0000000002590000-memory.dmp	family_agenttesla
behavioral1/memory/1848-27-0x0000000004A10000-0x0000000004A50000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b9fa9fee75d0c5d2631a2f14e19adcb4.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Key opened	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Key opened	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 364 set thread context of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1848	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
1848	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
2948	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1848	b9fa9fee75d0c5d2631a2f14e19adcb4.exe
Token: SeDebugPrivilege	2948	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 364 wrote to memory of 2948	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	29
PID 364 wrote to memory of 2948	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	29
PID 364 wrote to memory of 2948	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	29
PID 364 wrote to memory of 2948	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	29
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32
PID 364 wrote to memory of 1848	364	b9fa9fee75d0c5d2631a2f14e19adcb4.exe	32

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b9fa9fee75d0c5d2631a2f14e19adcb4.exe

C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe
"C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:364
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2948
- C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe
  "C:\Users\Admin\AppData\Local\Temp\b9fa9fee75d0c5d2631a2f14e19adcb4.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/364-0-0x0000000000E70000-0x0000000000EF0000-memory.dmp

Filesize
512KB

Download
memory/364-1-0x0000000074E90000-0x000000007557E000-memory.dmp

Filesize
6.9MB

Download
memory/364-2-0x0000000004B90000-0x0000000004BD0000-memory.dmp

Filesize
256KB

Download
memory/364-3-0x0000000000430000-0x000000000044C000-memory.dmp

Filesize
112KB

Download
memory/364-4-0x0000000074E90000-0x000000007557E000-memory.dmp

Filesize
6.9MB

Download
memory/364-5-0x0000000004B90000-0x0000000004BD0000-memory.dmp

Filesize
256KB

Download
memory/364-6-0x0000000000E00000-0x0000000000E6A000-memory.dmp

Filesize
424KB

Download
memory/364-7-0x0000000000580000-0x00000000005C4000-memory.dmp

Filesize
272KB

Download
memory/364-24-0x0000000074E90000-0x000000007557E000-memory.dmp

Filesize
6.9MB

Download
memory/1848-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1848-30-0x0000000074E90000-0x000000007557E000-memory.dmp

Filesize
6.9MB

Download
memory/1848-12-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1848-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1848-18-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1848-22-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1848-20-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1848-10-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1848-33-0x0000000004A10000-0x0000000004A50000-memory.dmp

Filesize
256KB

Download
memory/1848-14-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1848-26-0x0000000074E90000-0x000000007557E000-memory.dmp

Filesize
6.9MB

Download
memory/1848-31-0x0000000004A10000-0x0000000004A50000-memory.dmp

Filesize
256KB

Download
memory/1848-27-0x0000000004A10000-0x0000000004A50000-memory.dmp

Filesize
256KB

Download
memory/2948-25-0x000000006FB30000-0x00000000700DB000-memory.dmp

Filesize
5.7MB

Download
memory/2948-29-0x000000006FB30000-0x00000000700DB000-memory.dmp

Filesize
5.7MB

Download
memory/2948-28-0x0000000002550000-0x0000000002590000-memory.dmp

Filesize
256KB

Download
memory/2948-23-0x0000000002550000-0x0000000002590000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads