agenttesla | 666140cb796c70ba0187af66f33a2b1b6932770a200a4b968288bf795d2a852d

General

Target
AkbankSubeMevduatEkstre.pdf.exe
Size 1.5MB
Sample261107-n73vrabv21
SHA256 666140cb796c70ba0187af66f33a2b1b6932770a200a4b968288bf795d2a852d
MD5 012a65c50cf1cadafdd3ac7ae3f7a662
SHA1 03543a167f5948d6ffaee449ef0beacccafcbef2
SHA512 3b363281c778eb451c376248112ea116f5130e0fd40cc68459c9888c50ae628bcede0fcf75874a39e183cbd4ddc87cc919f57ca61466dc5b7f33e853d6e4d5cc
SSDEEP 24576:Xu6J33O0c+JY5UZ+XC0kGso6FamCbwCYwBTh4jI8His7EidWY:xu0c++OCvkGs9FamCsCYW6I8CsI7Y
TLSH
T18165E02273DDC371CB669173BF6AB7016EBF38254630B85B2F980D7DA950162122D7A3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

collection credential_access defense_evasion discovery execution agenttesla keylogger persistence privilege_escalation spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.yandex.com
Port
587
Username
[email protected]
Password
Nnanna1983

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/4548-5-0x0000000000400000-0x000000000044E000-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

Creates a file in the Startup directory 1 TTPs 1 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

persistence privilege_escalation

Registry Run Keys / Startup Folder

T1547.001

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\omadmprc.url	AkbankSubeMevduatEkstre.pdf.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-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5136 set thread context of 4548	5136	AkbankSubeMevduatEkstre.pdf.exe	91

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1440	cmd.exe

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AkbankSubeMevduatEkstre.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1320	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4548	RegSvcs.exe
4548	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 TTPs 3 IoCs

defense_evasion privilege_escalation

Process Injection

T1055

pid	Process
5136	AkbankSubeMevduatEkstre.pdf.exe
5136	AkbankSubeMevduatEkstre.pdf.exe
5136	AkbankSubeMevduatEkstre.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4548	RegSvcs.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
5136	AkbankSubeMevduatEkstre.pdf.exe
5136	AkbankSubeMevduatEkstre.pdf.exe
5136	AkbankSubeMevduatEkstre.pdf.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
5136	AkbankSubeMevduatEkstre.pdf.exe
5136	AkbankSubeMevduatEkstre.pdf.exe
5136	AkbankSubeMevduatEkstre.pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4548	RegSvcs.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5136 wrote to memory of 252	5136	AkbankSubeMevduatEkstre.pdf.exe	89
PID 5136 wrote to memory of 464	5136	AkbankSubeMevduatEkstre.pdf.exe	90
PID 5136 wrote to memory of 4548	5136	AkbankSubeMevduatEkstre.pdf.exe	91
PID 5136 wrote to memory of 1440	5136	AkbankSubeMevduatEkstre.pdf.exe	92
PID 1440 wrote to memory of 1320	1440	cmd.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\AkbankSubeMevduatEkstre.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\AkbankSubeMevduatEkstre.pdf.exe"
1⤵
- Creates a file in the Startup directory
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:5136
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegSvcs.exe"
  2⤵
  PID:252
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegSvcs.exe"
  2⤵
  PID:464
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegSvcs.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c TimeOut 1 & Del /F "C:\Users\Admin\AppData\Local\Temp\AkbankSubeMevduatEkstre.pdf.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1440
- - C:\Windows\SysWOW64\timeout.exe
    TimeOut 1
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1320