agenttesla | 9c04400b830e7c1fd4cb4cece00a491214fa818b599c26a25eb073340aa35ee0

General

Target

e796df608788e413905bc08891663751_JaffaCakes118.exe
Size

777KB
MD5

e796df608788e413905bc08891663751
SHA1

fe21bff25113cf730affdb4d5086f485913a65f3
SHA256

9c04400b830e7c1fd4cb4cece00a491214fa818b599c26a25eb073340aa35ee0
SHA512

eb3b405987f3b582eafbe110c89f902b33cc5df9844c5d2596808f740b01b7d7218a36fc6d6796217ac9a53f9dc8be84fa785b5528ea3c3fb30a140806338d2e
SSDEEP

12288:Kl8aA/ubk1mlLHfff17XxC/+/5Jf6LNP1EUIlrbVeRoU1lYDG8:KBZbh/ffFxC/IyvEbVbU1

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.radianthospitals.org
Port:
587
Username:
[email protected]
Password:
radiant2017

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
behavioral2/memory/544-12-0x0000000000880000-0x00000000008BC000-memory.dmp	family_agenttesla
behavioral2/memory/544-11-0x0000000000880000-0x00000000008BC000-memory.dmp	family_agenttesla
behavioral2/memory/544-9-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral2/memory/544-7-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral2/memory/544-24-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral2/memory/544-25-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral2/memory/544-26-0x0000000000400000-0x0000000000485000-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 file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	e796df608788e413905bc08891663751_JaffaCakes118.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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/544-8-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral2/memory/544-9-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral2/memory/544-6-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral2/memory/544-7-0x0000000000400000-0x0000000000485000-memory.dmp	upx

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-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e796df608788e413905bc08891663751_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e796df608788e413905bc08891663751_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e796df608788e413905bc08891663751_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 396 set thread context of 544	396	e796df608788e413905bc08891663751_JaffaCakes118.exe	82

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	e796df608788e413905bc08891663751_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e796df608788e413905bc08891663751_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
396	e796df608788e413905bc08891663751_JaffaCakes118.exe
396	e796df608788e413905bc08891663751_JaffaCakes118.exe
544	e796df608788e413905bc08891663751_JaffaCakes118.exe
544	e796df608788e413905bc08891663751_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
396	e796df608788e413905bc08891663751_JaffaCakes118.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
544	e796df608788e413905bc08891663751_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	544	e796df608788e413905bc08891663751_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 396 wrote to memory of 544	396	e796df608788e413905bc08891663751_JaffaCakes118.exe	82
PID 396 wrote to memory of 544	396	e796df608788e413905bc08891663751_JaffaCakes118.exe	82
PID 396 wrote to memory of 544	396	e796df608788e413905bc08891663751_JaffaCakes118.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e796df608788e413905bc08891663751_JaffaCakes118.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e796df608788e413905bc08891663751_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\e796df608788e413905bc08891663751_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e796df608788e413905bc08891663751_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:396
- C:\Users\Admin\AppData\Local\Temp\e796df608788e413905bc08891663751_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\e796df608788e413905bc08891663751_JaffaCakes118.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/396-13-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/396-1-0x0000000002420000-0x0000000002430000-memory.dmp

Filesize
64KB

Download
memory/396-3-0x0000000003F70000-0x0000000003F71000-memory.dmp

Filesize
4KB

Download
memory/396-0-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/544-24-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/544-25-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/544-9-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/544-6-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/544-7-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/544-12-0x0000000000880000-0x00000000008BC000-memory.dmp

Filesize
240KB

Download
memory/544-8-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/544-11-0x0000000000880000-0x00000000008BC000-memory.dmp

Filesize
240KB

Download
memory/544-26-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/544-27-0x0000000004B10000-0x00000000050B4000-memory.dmp

Filesize
5.6MB

Download
memory/544-28-0x00000000050C0000-0x0000000005152000-memory.dmp

Filesize
584KB

Download
memory/544-29-0x0000000005280000-0x000000000531C000-memory.dmp

Filesize
624KB

Download
memory/544-30-0x0000000005990000-0x00000000059A8000-memory.dmp

Filesize
96KB

Download
memory/544-31-0x00000000059D0000-0x0000000005A36000-memory.dmp

Filesize
408KB

Download
memory/544-32-0x0000000005FF0000-0x0000000006040000-memory.dmp

Filesize
320KB

Download
memory/544-34-0x00000000062B0000-0x00000000062BA000-memory.dmp

Filesize
40KB

Download

Analysis

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