agenttesla | 8ceba0ecd94e885f32b2e9b68373691b43887e70f6bc903878fdb74551fc919d

General

Target

fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
Size

792KB
MD5

fc9e2df82fdda41c3cbbe5037c9afa51
SHA1

ff6576a6d5d23d775a4960b7ccbb5727044501c9
SHA256

8ceba0ecd94e885f32b2e9b68373691b43887e70f6bc903878fdb74551fc919d
SHA512

5f274914d0d409d467bbca42c18be3df3d46289a5b1e9716afde21d9cbc07b8acc7439202fd8678881597fbe3ae698fdbec8ac0ea509bbe15410af27a3038e4c
SSDEEP

12288:GjbBOJuk1EYLwotbltPbjn1gFi7Vik4BKVToDdE0iKKEDB:dn7LPXVui7ViFrRDi+9

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.knmbz.com
Port:
587
Username:
[email protected]
Password:
$rGTkHr0

Signatures

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

AgentTesla payload 8 IoCs

resource	yara_rule
behavioral1/memory/2236-11-0x0000000000730000-0x000000000076C000-memory.dmp	family_agenttesla
behavioral1/memory/2236-12-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral1/memory/2236-9-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral1/memory/2236-10-0x0000000000730000-0x000000000076C000-memory.dmp	family_agenttesla
behavioral1/memory/2236-8-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral1/memory/2236-24-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral1/memory/2236-23-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla
behavioral1/memory/2236-25-0x0000000000400000-0x0000000000484000-memory.dmp	family_agenttesla

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 3 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

Credentials from Web Browsers
T1555.003
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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 2236	2752	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe	30

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2236-12-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral1/memory/2236-9-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral1/memory/2236-7-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral1/memory/2236-8-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral1/memory/2236-4-0x0000000000400000-0x0000000000484000-memory.dmp	upx
behavioral1/memory/2236-23-0x0000000000400000-0x0000000000484000-memory.dmp	upx

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	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2752	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
2236	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
2236	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2752	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2236	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 2236	2752	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2236	2752	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2236	2752	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe	30
PID 2752 wrote to memory of 2236	2752	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Users\Admin\AppData\Local\Temp\fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\fc9e2df82fdda41c3cbbe5037c9afa51_JaffaCakes118.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2236

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/2236-7-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2236-8-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2236-25-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2236-23-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2236-24-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2236-11-0x0000000000730000-0x000000000076C000-memory.dmp

Filesize
240KB

Download
memory/2236-4-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2236-10-0x0000000000730000-0x000000000076C000-memory.dmp

Filesize
240KB

Download
memory/2236-12-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2236-9-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/2752-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2752-2-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2752-5-0x0000000000400000-0x00000000004CB000-memory.dmp

Filesize
812KB

Download
memory/2752-1-0x00000000002B0000-0x00000000002C3000-memory.dmp

Filesize
76KB

Download
memory/2752-3-0x0000000000360000-0x0000000000361000-memory.dmp

Filesize
4KB

Download

Analysis

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