agenttesla | 2ca4f8006b5eddcbf87895299660f90ff6bad708c5b4b5be93d4d430288216f1

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 11:49

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General

Target

efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe
Size

583KB
MD5

efba2f0fef43c9d866b89e8757e898bd
SHA1

e10321ce870752b5a630c56461dc630a6b69a246
SHA256

2ca4f8006b5eddcbf87895299660f90ff6bad708c5b4b5be93d4d430288216f1
SHA512

dd36c21438e6c32e4104e30bf44e0462dab0fe598cb8e21576eca193758e3d04465f7f96d9d557f19a42306a2f1b49252899ea6aa42e7252df330054ed80e5d7
SSDEEP

6144:iVL0nt7DmqF7f3WuBJweg1jtblBdrUGTHLR4XKKKMjDXXSR+AauJMwL0d:cuvf3WuBJylfXt4Xjjg+A6G0

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
OGOM12345

Signatures

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

AgentTesla payload 3 IoCs

resource	yara_rule
behavioral1/memory/688-22-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/688-20-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/688-21-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\refghjgiuy.lnk	refghjgiuy.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	refghjgiuy.exe

Loads dropped DLL 2 IoCs

pid	Process
3028	cmd.exe
3024	refghjgiuy.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
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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 688	3024	refghjgiuy.exe	36

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 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	refghjgiuy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
688	RegAsm.exe
688	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe
Token: SeDebugPrivilege	3024	refghjgiuy.exe
Token: SeDebugPrivilege	688	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
688	RegAsm.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2840	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	31
PID 1736 wrote to memory of 2840	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	31
PID 1736 wrote to memory of 2840	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	31
PID 1736 wrote to memory of 2840	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	31
PID 1736 wrote to memory of 3028	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	33
PID 1736 wrote to memory of 3028	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	33
PID 1736 wrote to memory of 3028	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	33
PID 1736 wrote to memory of 3028	1736	efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe	33
PID 3028 wrote to memory of 3024	3028	cmd.exe	35
PID 3028 wrote to memory of 3024	3028	cmd.exe	35
PID 3028 wrote to memory of 3024	3028	cmd.exe	35
PID 3028 wrote to memory of 3024	3028	cmd.exe	35
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36
PID 3024 wrote to memory of 688	3024	refghjgiuy.exe	36

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\efba2f0fef43c9d866b89e8757e898bd_JaffaCakes118.exe" "C:\Users\Admin\AppData\Roaming\refghjgiuy.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c, "C:\Users\Admin\AppData\Roaming\refghjgiuy.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Users\Admin\AppData\Roaming\refghjgiuy.exe
    "C:\Users\Admin\AppData\Roaming\refghjgiuy.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3024
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      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:688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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 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\Roaming\refghjgiuy.exe

Filesize
583KB

MD5
efba2f0fef43c9d866b89e8757e898bd

SHA1
e10321ce870752b5a630c56461dc630a6b69a246

SHA256
2ca4f8006b5eddcbf87895299660f90ff6bad708c5b4b5be93d4d430288216f1

SHA512
dd36c21438e6c32e4104e30bf44e0462dab0fe598cb8e21576eca193758e3d04465f7f96d9d557f19a42306a2f1b49252899ea6aa42e7252df330054ed80e5d7

Download Submit
memory/688-21-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/688-20-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/688-22-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1736-10-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/1736-3-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/1736-6-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/1736-7-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/1736-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/1736-4-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/1736-1-0x0000000000120000-0x00000000001B8000-memory.dmp

Filesize
608KB

Download
memory/1736-2-0x0000000000500000-0x0000000000518000-memory.dmp

Filesize
96KB

Download
memory/1736-5-0x0000000074A80000-0x000000007516E000-memory.dmp

Filesize
6.9MB

Download
memory/3024-17-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/3024-16-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/3024-15-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/3024-23-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download
memory/3024-14-0x0000000000DE0000-0x0000000000E78000-memory.dmp

Filesize
608KB

Download
memory/3024-24-0x0000000074A00000-0x00000000750EE000-memory.dmp

Filesize
6.9MB

Download