agenttesla | 79864f364518fd1b2715152d7572619beb93c90fcde5c8ad9d90772df36d61e3

General

Target

Invoice Copy--SS21-22185.exe
Size

735KB
MD5

de14a9a68222535e7607d779bd765693
SHA1

c5f7c6c381f94412c615c653b3d32fc0ff214c6c
SHA256

403bb6e9dc90881b21455b962d27a1ccf555585645eb648ad3b29f94d9265aa5
SHA512

9260891716b6f48bb1b2a9625ffff02b277e912630f876e110f8820153ecbd34eab8278b2d96d3e3837c185695b76b5ea35b7975face69aaed7d7bbaa846d575
SSDEEP

12288:G+G82iNeHK7z8EzZ1q2hsKZQrwcflkNA7MqGzeejAZ2a/IGRUdZ4xCmrx/D:d1b/Phs2xcdwFq0ee62aAGRUX4xCCD

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
uscentral50.myserverhosts.com
Port:
587
Username:
[email protected]
Password:
waters@789

Signatures

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

AgentTesla payload 5 IoCs

resource	yara_rule
behavioral1/memory/2872-22-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2872-20-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2872-18-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2872-14-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2872-12-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

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

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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 2872	2516	Invoice Copy--SS21-22185.exe	31

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	Invoice Copy--SS21-22185.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2516	Invoice Copy--SS21-22185.exe
2872	RegSvcs.exe
2872	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2516	Invoice Copy--SS21-22185.exe
Token: SeDebugPrivilege	2872	RegSvcs.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31
PID 2516 wrote to memory of 2872	2516	Invoice Copy--SS21-22185.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\Invoice Copy--SS21-22185.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice Copy--SS21-22185.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  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
  - outlook_office_path
  - outlook_win_path
  PID:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/2516-0-0x0000000073F8E000-0x0000000073F8F000-memory.dmp

Filesize
4KB

Download
memory/2516-1-0x00000000003E0000-0x000000000049E000-memory.dmp

Filesize
760KB

Download
memory/2516-2-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-3-0x00000000004F0000-0x0000000000506000-memory.dmp

Filesize
88KB

Download
memory/2516-4-0x0000000073F8E000-0x0000000073F8F000-memory.dmp

Filesize
4KB

Download
memory/2516-5-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2516-6-0x0000000008250000-0x00000000082F2000-memory.dmp

Filesize
648KB

Download
memory/2516-7-0x0000000004CF0000-0x0000000004D2C000-memory.dmp

Filesize
240KB

Download
memory/2516-24-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-20-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2872-25-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-18-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2872-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2872-14-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2872-12-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2872-10-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2872-22-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2872-8-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2872-23-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-26-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-27-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-30-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-31-0x0000000073F80000-0x000000007466E000-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