agenttesla | 1cf6e97d7e57293341aff0db57c90a1407113308873f0d7ada77bcb4628b2233

General

Target

jo.exe
Size

772KB
MD5

054e68e7d593de58d32a4f0095b01ca1
SHA1

bade86f9e513231dd6c7b92dee7333c433b88fca
SHA256

42c57a0b5af141e445b1eae32f9dde469346969017018efcdd09f24f40f65c3c
SHA512

d1330e3be34cfa148dffe05ab07c88e9c7bd12bac8002c2c3d3a3e02b04de62c9311b84fe32dbd1bbbdd5fc81fd8bb77e9590c512c10dcd96efca38dd65cbd8a

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.zuarakltd.com
Port:
587
Username:
[email protected]
Password:
CLy@DAi2

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/1780-62-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1780-63-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1780-64-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1780-65-0x00000000004543AE-mapping.dmp	family_agenttesla
behavioral1/memory/1780-67-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/1780-69-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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:

jo.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	jo.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	jo.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:

jo.exe

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

jo.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

jo.exe

description pid process target process

PID 284 set thread context of 1780 284 jo.exe jo.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

jo.exejo.exe

pid process

284 jo.exe
284 jo.exe
284 jo.exe
284 jo.exe
284 jo.exe
284 jo.exe
1780 jo.exe
1780 jo.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

jo.exejo.exe

description pid process

Token: SeDebugPrivilege 284 jo.exe
Token: SeDebugPrivilege 1780 jo.exe

description	pid	process	target process
PID 284 set thread context of 1780	284	jo.exe	jo.exe

pid	process
284	jo.exe
284	jo.exe
284	jo.exe
284	jo.exe
284	jo.exe
284	jo.exe
1780	jo.exe
1780	jo.exe

description	pid	process
Token: SeDebugPrivilege	284	jo.exe
Token: SeDebugPrivilege	1780	jo.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

jo.exe

description	pid	process	target process
PID 284 wrote to memory of 1828	284	jo.exe	jo.exe
PID 284 wrote to memory of 1828	284	jo.exe	jo.exe
PID 284 wrote to memory of 1828	284	jo.exe	jo.exe
PID 284 wrote to memory of 1828	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe
PID 284 wrote to memory of 1780	284	jo.exe	jo.exe

outlook_office_path 1 IoCs

Processes:

jo.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	jo.exe

outlook_win_path 1 IoCs

Processes:

jo.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	jo.exe

C:\Users\Admin\AppData\Local\Temp\jo.exe
"C:\Users\Admin\AppData\Local\Temp\jo.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:284

C:\Users\Admin\AppData\Local\Temp\jo.exe
"{path}"
2⤵
PID:1828

C:\Users\Admin\AppData\Local\Temp\jo.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

memory/284-54-0x00000000001A0000-0x0000000000266000-memory.dmp

Filesize
792KB

Download
memory/284-55-0x00000000752A1000-0x00000000752A3000-memory.dmp

Filesize
8KB

Download
memory/284-56-0x0000000000380000-0x0000000000390000-memory.dmp

Filesize
64KB

Download
memory/284-57-0x0000000002140000-0x00000000021B2000-memory.dmp

Filesize
456KB

Download
memory/284-58-0x00000000004A0000-0x00000000004F8000-memory.dmp

Filesize
352KB

Download
memory/1780-59-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1780-60-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1780-62-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1780-63-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1780-64-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1780-65-0x00000000004543AE-mapping.dmp

Download
memory/1780-67-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/1780-69-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads