agenttesla | 7550bec79c053dc848454a9b4e4ddeef38d5e1873b9df5940813af85aacfd021

General

Target

Scan096355.exe
Size

680KB
MD5

2e65f749507d0fb3a8e980565a5055a1
SHA1

dcd01dd0b4c76b26ba5f1590016a28ed7286a7f4
SHA256

7550bec79c053dc848454a9b4e4ddeef38d5e1873b9df5940813af85aacfd021
SHA512

e8b3cb57c995561defe236feb32e9811a19123bb4e25e9a7b36c8c42b6b2c2e5cc6608633c895e3a6863adc9e59fa0f70ad4f6ce3f44e129cabc92122eacf276

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
wOeQnaO7

Signatures

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

AgentTesla Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3948-125-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/3948-126-0x00000000004377AE-mapping.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:

Scan096355.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Scan096355.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Scan096355.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:

Scan096355.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan096355.exe
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan096355.exe
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan096355.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:

Scan096355.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Scan096355.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Scan096355.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Scan096355.exe

description pid process target process

PID 588 set thread context of 3948 588 Scan096355.exe Scan096355.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Scan096355.exe

pid process

3948 Scan096355.exe
3948 Scan096355.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Scan096355.exe

description pid process

Token: SeDebugPrivilege 3948 Scan096355.exe

description	pid	process	target process
PID 588 set thread context of 3948	588	Scan096355.exe	Scan096355.exe

pid	process
3948	Scan096355.exe
3948	Scan096355.exe

description	pid	process
Token: SeDebugPrivilege	3948	Scan096355.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Scan096355.exe

description	pid	process	target process
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe
PID 588 wrote to memory of 3948	588	Scan096355.exe	Scan096355.exe

outlook_office_path 1 IoCs

Processes:

Scan096355.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan096355.exe

outlook_win_path 1 IoCs

Processes:

Scan096355.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan096355.exe

C:\Users\Admin\AppData\Local\Temp\Scan096355.exe
"C:\Users\Admin\AppData\Local\Temp\Scan096355.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:588

C:\Users\Admin\AppData\Local\Temp\Scan096355.exe
"C:\Users\Admin\AppData\Local\Temp\Scan096355.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3948

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/588-115-0x0000000000E50000-0x0000000000E51000-memory.dmp

Filesize
4KB

Download
memory/588-117-0x0000000005D70000-0x0000000005D71000-memory.dmp

Filesize
4KB

Download
memory/588-118-0x0000000005770000-0x0000000005771000-memory.dmp

Filesize
4KB

Download
memory/588-119-0x0000000005870000-0x0000000005D6E000-memory.dmp

Filesize
5.0MB

Download
memory/588-120-0x0000000005730000-0x0000000005731000-memory.dmp

Filesize
4KB

Download
memory/588-121-0x0000000005960000-0x0000000005966000-memory.dmp

Filesize
24KB

Download
memory/588-122-0x00000000066D0000-0x00000000066D1000-memory.dmp

Filesize
4KB

Download
memory/588-123-0x0000000006870000-0x00000000068D9000-memory.dmp

Filesize
420KB

Download
memory/588-124-0x0000000006950000-0x0000000006951000-memory.dmp

Filesize
4KB

Download
memory/3948-125-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/3948-126-0x00000000004377AE-mapping.dmp

Download
memory/3948-131-0x00000000050F0000-0x00000000050F1000-memory.dmp

Filesize
4KB

Download
memory/3948-132-0x00000000052C0000-0x00000000052C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads