agenttesla | 8720ce143198440ad0bf5cac66c06304ab1f414d24de6c6e8184063cd45e2490

Analysis

max time kernel
141s
max time network
19s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 08:43

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General

Target

Appraisal...exe
Size

455KB
MD5

8cc9377f480b118d4a20097795125fa1
SHA1

15b3adb3bbb8a44479506dd3dcdd7abdd1ddcfe3
SHA256

e0ca3417eb10f895ac70bee753e9fd7e549287aad340ab3f38c75c58d27657a0
SHA512

9fbf69382149e6766c6d0c9d9a296a3d91c6a96ac21ee3fd08d65c9a3da3499238b629dc6e8ca99a561e5d813acebc9bdfad815ba68637a15037e774fca48c3d
SSDEEP

12288:4NOC63GkAuNDa/S1F09ZEC7jn3VK/yjAqoBT7nM:9Z3XN4S1CXE8DV2yj07nM

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Signatures

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

AgentTesla payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2432-15-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/2432-17-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/2432-13-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/2432-18-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/2432-19-0x0000000001F00000-0x0000000001F3C000-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

Loads dropped DLL 2 IoCs

Processes:

Appraisal...exe

pid	Process
2052	Appraisal...exe
2052	Appraisal...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

Processes:

Appraisal...exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Appraisal...exe
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Appraisal...exe
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Appraisal...exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Appraisal...exe

description	pid	Process	procid_target
PID 2052 set thread context of 2432	2052	Appraisal...exe	29

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 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

Processes:

Appraisal...exeAppraisal...exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Appraisal...exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Appraisal...exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Appraisal...exeAppraisal...exe

pid	Process
2052	Appraisal...exe
2052	Appraisal...exe
2052	Appraisal...exe
2052	Appraisal...exe
2432	Appraisal...exe
2432	Appraisal...exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Appraisal...exe

pid	Process
2052	Appraisal...exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Appraisal...exe

description	pid	Process
Token: SeDebugPrivilege	2432	Appraisal...exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

Appraisal...exe

description	pid	Process	procid_target
PID 2052 wrote to memory of 2432	2052	Appraisal...exe	29
PID 2052 wrote to memory of 2432	2052	Appraisal...exe	29
PID 2052 wrote to memory of 2432	2052	Appraisal...exe	29
PID 2052 wrote to memory of 2432	2052	Appraisal...exe	29
PID 2052 wrote to memory of 2432	2052	Appraisal...exe	29

outlook_office_path 1 IoCs

Processes:

Appraisal...exe

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

outlook_win_path 1 IoCs

Processes:

Appraisal...exe

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	Appraisal...exe

C:\Users\Admin\AppData\Local\Temp\Appraisal...exe
"C:\Users\Admin\AppData\Local\Temp\Appraisal...exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2052
- C:\Users\Admin\AppData\Local\Temp\Appraisal...exe
  "C:\Users\Admin\AppData\Local\Temp\Appraisal...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:2432

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

\Users\Admin\AppData\Local\Temp\056oizw.dll

Filesize
11KB

MD5
3b1537f7fc03d57fd1ba28e5df23403e

SHA1
739b38f636a072f057791240f655a236872d9780

SHA256
9db597caf72e1ae04bd196338acc32912aa42485046bd71a7ca75e461a09fa28

SHA512
6f9f244c2336a3b445b536b4ae56027f66850bd9b508b603a672a8ffd9645e0f03f72e4b0baa281aa9dd6a7b36a8c7a17d2bc6e4c8d34ad21e29f9d1577485ba

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\Users\Admin\AppData\Local\Temp\nsu7225.tmp\System.dll

Filesize
11KB

MD5
fccff8cb7a1067e23fd2e2b63971a8e1

SHA1
30e2a9e137c1223a78a0f7b0bf96a1c361976d91

SHA256
6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e

SHA512
f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c

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memory/2052-12-0x0000000074B10000-0x0000000074B17000-memory.dmp

Filesize
28KB

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memory/2052-16-0x0000000074B10000-0x0000000074B17000-memory.dmp

Filesize
28KB

Download
memory/2432-15-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2432-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2432-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2432-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2432-19-0x0000000001F00000-0x0000000001F3C000-memory.dmp

Filesize
240KB

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