agenttesla | 91482dbb3ce39df4acf6d1f92d04cd8b6b5026259c54461cd44b5827e6c249a1

General

Target

IMG 24062020PDF.exe
Size

443KB
MD5

20c7a0377611958b37348cd03f7e0c3f
SHA1

d258d88e6525b4b332969f7c861896c1c1f08582
SHA256

3435125a8f088487cba76172fe20bdb586112bfa4ab5d8d3770dbc07d092a158
SHA512

3d2e29b4763762a48aa683a152e6591b5e6edb984ac9260b49bf79b600c6470d94ec1b170947a087825401be70ddf12a56d7569a53b03bb6a4a76b639929b9ee

Score

10^/10

agenttesla collection evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.mado.com.tr
Port:
587
Username:
[email protected]
Password:
Muharrem2023++

Signatures

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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1804-62-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1804-61-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1804-63-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1804-64-0x000000000044738E-mapping.dmp	family_agenttesla
behavioral1/memory/1804-66-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1804-68-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/324-57-0x0000000001FA0000-0x0000000001FF4000-memory.dmp	rezer0

Drops file in Drivers directory 1 IoCs

Processes:

IMG 24062020PDF.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts IMG 24062020PDF.exe
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	IMG 24062020PDF.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

IMG 24062020PDF.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	IMG 24062020PDF.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	IMG 24062020PDF.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

IMG 24062020PDF.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IMG 24062020PDF.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IMG 24062020PDF.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IMG 24062020PDF.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

IMG 24062020PDF.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	IMG 24062020PDF.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	IMG 24062020PDF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

IMG 24062020PDF.exe

description pid process target process

PID 324 set thread context of 1804 324 IMG 24062020PDF.exe IMG 24062020PDF.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

REG.exe

pid process

1352 REG.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

IMG 24062020PDF.exe

pid process

1804 IMG 24062020PDF.exe
1804 IMG 24062020PDF.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

IMG 24062020PDF.exe

description pid process

Token: SeDebugPrivilege 1804 IMG 24062020PDF.exe

description	pid	process	target process
PID 324 set thread context of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe

pid	process
1352	REG.exe

pid	process
1804	IMG 24062020PDF.exe
1804	IMG 24062020PDF.exe

description	pid	process
Token: SeDebugPrivilege	1804	IMG 24062020PDF.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

IMG 24062020PDF.exeIMG 24062020PDF.exe

description	pid	process	target process
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 324 wrote to memory of 1804	324	IMG 24062020PDF.exe	IMG 24062020PDF.exe
PID 1804 wrote to memory of 1352	1804	IMG 24062020PDF.exe	REG.exe
PID 1804 wrote to memory of 1352	1804	IMG 24062020PDF.exe	REG.exe
PID 1804 wrote to memory of 1352	1804	IMG 24062020PDF.exe	REG.exe
PID 1804 wrote to memory of 1352	1804	IMG 24062020PDF.exe	REG.exe

outlook_office_path 1 IoCs

Processes:

IMG 24062020PDF.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IMG 24062020PDF.exe

outlook_win_path 1 IoCs

Processes:

IMG 24062020PDF.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	IMG 24062020PDF.exe

C:\Users\Admin\AppData\Local\Temp\IMG 24062020PDF.exe
"C:\Users\Admin\AppData\Local\Temp\IMG 24062020PDF.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:324

C:\Users\Admin\AppData\Local\Temp\IMG 24062020PDF.exe
"{path}"
2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1804

C:\Windows\SysWOW64\REG.exe
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
3⤵
- Modifies registry key
PID:1352

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/324-54-0x00000000000A0000-0x0000000000116000-memory.dmp

Filesize
472KB

Download
memory/324-55-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/324-56-0x0000000000520000-0x0000000000530000-memory.dmp

Filesize
64KB

Download
memory/324-57-0x0000000001FA0000-0x0000000001FF4000-memory.dmp

Filesize
336KB

Download
memory/1352-70-0x0000000000000000-mapping.dmp

Download
memory/1804-62-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1804-59-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1804-61-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1804-63-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1804-64-0x000000000044738E-mapping.dmp

Download
memory/1804-66-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1804-68-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1804-58-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads