agenttesla | 9a6f5e16552d185a6bf7d82cafe02a49a982066ab8035c175bcbd7d0ae0c550f

General

Target

9235b8892e965dc5554dcd81f0587fd0N.exe
Size

720KB
MD5

9235b8892e965dc5554dcd81f0587fd0
SHA1

ebb5ad393207f07b11c6efd5c387c596d6289920
SHA256

9a6f5e16552d185a6bf7d82cafe02a49a982066ab8035c175bcbd7d0ae0c550f
SHA512

8f1f1ae09e847ac261016fecdcb57fae0775327cb8ede35ef4232857d16bef8c80a080d4c003f694a6b95f4addf62db043e4a7b491c2a9c1f6d7ec8c81b83acb
SSDEEP

12288:42iNHWZYd1DJhh2zziQrtkeogNdD2KBhGmwp1KuLUzfWkqR3Oj0vw6OKvIGc2:41BB2zzX920hGdUzBG380bOCx

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.jeanclutchgroup.top
Port:
587
Username:
[email protected]
Password:
os8Nkq9A~qSn
Email To:
[email protected]

Signatures

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9235b8892e965dc5554dcd81f0587fd0N.exe
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9235b8892e965dc5554dcd81f0587fd0N.exe
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9235b8892e965dc5554dcd81f0587fd0N.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
20	api.ipify.org
21	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1636 set thread context of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94

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	9235b8892e965dc5554dcd81f0587fd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9235b8892e965dc5554dcd81f0587fd0N.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4000	9235b8892e965dc5554dcd81f0587fd0N.exe
4000	9235b8892e965dc5554dcd81f0587fd0N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4000	9235b8892e965dc5554dcd81f0587fd0N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94
PID 1636 wrote to memory of 4000	1636	9235b8892e965dc5554dcd81f0587fd0N.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9235b8892e965dc5554dcd81f0587fd0N.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9235b8892e965dc5554dcd81f0587fd0N.exe

C:\Users\Admin\AppData\Local\Temp\9235b8892e965dc5554dcd81f0587fd0N.exe
"C:\Users\Admin\AppData\Local\Temp\9235b8892e965dc5554dcd81f0587fd0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Users\Admin\AppData\Local\Temp\9235b8892e965dc5554dcd81f0587fd0N.exe
  "C:\Users\Admin\AppData\Local\Temp\9235b8892e965dc5554dcd81f0587fd0N.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:4000

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

4

T1552

Credentials In Files

3

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\9235b8892e965dc5554dcd81f0587fd0N.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1636-10-0x0000000008730000-0x00000000087B4000-memory.dmp

Filesize
528KB

Download
memory/1636-16-0x0000000074E30000-0x00000000755E0000-memory.dmp

Filesize
7.7MB

Download
memory/1636-9-0x0000000005C80000-0x0000000005C90000-memory.dmp

Filesize
64KB

Download
memory/1636-4-0x0000000074E30000-0x00000000755E0000-memory.dmp

Filesize
7.7MB

Download
memory/1636-5-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/1636-6-0x0000000005C60000-0x0000000005C7A000-memory.dmp

Filesize
104KB

Download
memory/1636-7-0x0000000074E3E000-0x0000000074E3F000-memory.dmp

Filesize
4KB

Download
memory/1636-8-0x0000000074E30000-0x00000000755E0000-memory.dmp

Filesize
7.7MB

Download
memory/1636-0-0x0000000074E3E000-0x0000000074E3F000-memory.dmp

Filesize
4KB

Download
memory/1636-3-0x00000000058F0000-0x0000000005982000-memory.dmp

Filesize
584KB

Download
memory/1636-2-0x0000000005E00000-0x00000000063A4000-memory.dmp

Filesize
5.6MB

Download
memory/1636-11-0x0000000008850000-0x00000000088EC000-memory.dmp

Filesize
624KB

Download
memory/1636-1-0x0000000000DC0000-0x0000000000E7A000-memory.dmp

Filesize
744KB

Download
memory/4000-20-0x0000000074E30000-0x00000000755E0000-memory.dmp

Filesize
7.7MB

Download
memory/4000-17-0x0000000005320000-0x0000000005386000-memory.dmp

Filesize
408KB

Download
memory/4000-15-0x0000000074E30000-0x00000000755E0000-memory.dmp

Filesize
7.7MB

Download
memory/4000-12-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/4000-19-0x0000000006810000-0x0000000006860000-memory.dmp

Filesize
320KB

Download
memory/4000-18-0x0000000074E30000-0x00000000755E0000-memory.dmp

Filesize
7.7MB

Download

Analysis

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