agenttesla | 82f9c09823864e90054131095deec5a93914bdb3ea5c11a4bc1ee05d7e0fed72

General

Target

4AyNBr3uasL1KdM.exe
Size

395KB
MD5

8009c4fb49af5159865a87a097f916dc
SHA1

6009bca1181a026363ee23822fb2933b0fd8380f
SHA256

82f9c09823864e90054131095deec5a93914bdb3ea5c11a4bc1ee05d7e0fed72
SHA512

cbaef711d92a90184347ec403f687d48eb25a211183d113961c299c8db2a01b4e5a65dda02ba7f75b32005c046f2eea5407e9cddea77b892fd81065f32de8a4f

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.lahaciendamontericogrande.com.pe
Port:
587
Username:
[email protected]
Password:
e$$

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/864-62-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/864-63-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/864-64-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/864-65-0x000000000043765E-mapping.dmp	family_agenttesla
behavioral1/memory/864-66-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

Processes:

4AyNBr3uasL1KdM.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts 4AyNBr3uasL1KdM.exe
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
T1081
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
T1081
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
T1081

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	4AyNBr3uasL1KdM.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

4AyNBr3uasL1KdM.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4AyNBr3uasL1KdM.exe
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4AyNBr3uasL1KdM.exe
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4AyNBr3uasL1KdM.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

4AyNBr3uasL1KdM.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	4AyNBr3uasL1KdM.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

4AyNBr3uasL1KdM.exe

description pid process target process

PID 1336 set thread context of 864 1336 4AyNBr3uasL1KdM.exe 4AyNBr3uasL1KdM.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

4AyNBr3uasL1KdM.exe4AyNBr3uasL1KdM.exe

pid process

1336 4AyNBr3uasL1KdM.exe
1336 4AyNBr3uasL1KdM.exe
1336 4AyNBr3uasL1KdM.exe
864 4AyNBr3uasL1KdM.exe
864 4AyNBr3uasL1KdM.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4AyNBr3uasL1KdM.exe4AyNBr3uasL1KdM.exe

description pid process

Token: SeDebugPrivilege 1336 4AyNBr3uasL1KdM.exe
Token: SeDebugPrivilege 864 4AyNBr3uasL1KdM.exe

description	pid	process	target process
PID 1336 set thread context of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe

pid	process
1336	4AyNBr3uasL1KdM.exe
1336	4AyNBr3uasL1KdM.exe
1336	4AyNBr3uasL1KdM.exe
864	4AyNBr3uasL1KdM.exe
864	4AyNBr3uasL1KdM.exe

description	pid	process
Token: SeDebugPrivilege	1336	4AyNBr3uasL1KdM.exe
Token: SeDebugPrivilege	864	4AyNBr3uasL1KdM.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

4AyNBr3uasL1KdM.exe

description	pid	process	target process
PID 1336 wrote to memory of 1060	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 1060	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 1060	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 1060	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe
PID 1336 wrote to memory of 864	1336	4AyNBr3uasL1KdM.exe	4AyNBr3uasL1KdM.exe

outlook_office_path 1 IoCs

Processes:

4AyNBr3uasL1KdM.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4AyNBr3uasL1KdM.exe

outlook_win_path 1 IoCs

Processes:

4AyNBr3uasL1KdM.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4AyNBr3uasL1KdM.exe

C:\Users\Admin\AppData\Local\Temp\4AyNBr3uasL1KdM.exe
"C:\Users\Admin\AppData\Local\Temp\4AyNBr3uasL1KdM.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336

C:\Users\Admin\AppData\Local\Temp\4AyNBr3uasL1KdM.exe
"C:\Users\Admin\AppData\Local\Temp\4AyNBr3uasL1KdM.exe"
2⤵
PID:1060

C:\Users\Admin\AppData\Local\Temp\4AyNBr3uasL1KdM.exe
"C:\Users\Admin\AppData\Local\Temp\4AyNBr3uasL1KdM.exe"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:864

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/864-61-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/864-64-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/864-69-0x0000000004E61000-0x0000000004E62000-memory.dmp

Filesize
4KB

Download
memory/864-68-0x0000000004E60000-0x0000000004E61000-memory.dmp

Filesize
4KB

Download
memory/864-66-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/864-60-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/864-63-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/864-62-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/864-65-0x000000000043765E-mapping.dmp

Download
memory/1336-54-0x0000000000B50000-0x0000000000B51000-memory.dmp

Filesize
4KB

Download
memory/1336-56-0x0000000075B71000-0x0000000075B73000-memory.dmp

Filesize
8KB

Download
memory/1336-59-0x0000000004BB0000-0x0000000004C08000-memory.dmp

Filesize
352KB

Download
memory/1336-58-0x00000000009F0000-0x00000000009F5000-memory.dmp

Filesize
20KB

Download
memory/1336-57-0x0000000004D00000-0x0000000004D01000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads