agenttesla | 1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4

General

Target

1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe
Size

620KB
MD5

bb8bbd61f7f45c48819489caa8bb627b
SHA1

5022b614e9c8ce0f38ada867f1fd1e243cf0f464
SHA256

1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4
SHA512

00f7d1e67a6400f6acc5fb8f228b0506dd2b8eb3d93c9b13beffee20d9a236cfebaaca27a1cc1d91b1c03e9d920da42702d8aebac0e40a8e8b80a7de1cc724c3
SSDEEP

12288:RMxSUX4pZeTHJI4RfJfvZT2RXt5Ehizw8GGcFSm1XVfE9frqw9h:RNUX4pMHJI4LJ2RXt5SGZm/fYjqSh

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.drconstrucciones.es
Port:
587
Username:
[email protected]
Password:
Lagoness2
Email To:
[email protected]

Signatures

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

Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs

resource	yara_rule
behavioral2/memory/836-7-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_EXE_Packed_GEN01

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs

resource	yara_rule
behavioral2/memory/836-7-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects executables packed with or use KoiVM 1 IoCs

resource	yara_rule
behavioral2/memory/3336-6-0x00000257BD930000-0x00000257BD9C4000-memory.dmp	INDICATOR_EXE_Packed_KoiVM

Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs

resource	yara_rule
behavioral2/memory/836-7-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs

resource	yara_rule
behavioral2/memory/836-7-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs

resource	yara_rule
behavioral2/memory/836-7-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

Detects executables referencing many file transfer clients. Observed in information stealers 1 IoCs

resource	yara_rule
behavioral2/memory/836-7-0x0000000000400000-0x0000000000442000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

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

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
21	api.ipify.org
20	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3336 set thread context of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
836	regasm.exe
836	regasm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe
Token: SeDebugPrivilege	836	regasm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
836	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 836	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	89
PID 3336 wrote to memory of 4664	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	90
PID 3336 wrote to memory of 4664	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	90
PID 3336 wrote to memory of 4664	3336	1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe	90

C:\Users\Admin\AppData\Local\Temp\1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe
"C:\Users\Admin\AppData\Local\Temp\1ddfb4b7cc2fa9dc2883c942bab409ab6be7c6efa494495e6c6c3438e86ee0c4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3336
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:836
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:4664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

4

T1552

Credentials In Files

3

T1552.001

Credentials in Registry

1

T1552.002

Discovery

Lateral Movement

Collection

Data from Local System

4

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/836-10-0x0000000005AC0000-0x0000000005B26000-memory.dmp

Filesize
408KB

Download
memory/836-17-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/836-16-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/836-15-0x00000000070F0000-0x00000000070FA000-memory.dmp

Filesize
40KB

Download
memory/836-14-0x0000000006F60000-0x0000000006FF2000-memory.dmp

Filesize
584KB

Download
memory/836-13-0x0000000006E70000-0x0000000006EC0000-memory.dmp

Filesize
320KB

Download
memory/836-11-0x0000000074740000-0x0000000074EF0000-memory.dmp

Filesize
7.7MB

Download
memory/836-7-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/836-8-0x000000007474E000-0x000000007474F000-memory.dmp

Filesize
4KB

Download
memory/836-9-0x0000000005F70000-0x0000000006514000-memory.dmp

Filesize
5.6MB

Download
memory/3336-4-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/3336-6-0x00000257BD930000-0x00000257BD9C4000-memory.dmp

Filesize
592KB

Download
memory/3336-12-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/3336-5-0x00000257A37E0000-0x00000257A37E6000-memory.dmp

Filesize
24KB

Download
memory/3336-0-0x00000257A3440000-0x00000257A3450000-memory.dmp

Filesize
64KB

Download
memory/3336-3-0x00000257A3800000-0x00000257A381E000-memory.dmp

Filesize
120KB

Download
memory/3336-2-0x00000257BD8B0000-0x00000257BD926000-memory.dmp

Filesize
472KB

Download
memory/3336-1-0x00007FF9D55F3000-0x00007FF9D55F5000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing