agenttesla | eb43407ee7ae51e81270d21db3c2bfb8a480281840bbf3cb212a4b7a51fa7d77

General

Target

PO#209027_xlxs.exe
Size

618KB
MD5

aa08c71f5b944ab021e404a6789c2e99
SHA1

3f78a32757d3ed659bd8869d4f0d56c971e58912
SHA256

9ffb458e6d120f6d42906c102ce49ecefbe4a937d6b605a4d3a1b3a7dc15e627
SHA512

383bac0086bf39b68ffc0f286bfd397b1abd5531321ce030084a5090fbaee37955151ad740b9871fd5569732718f3caf04381c3bb73f08e2d38222955dac1310

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
blessing2020

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/2020-63-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/2020-64-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/2020-65-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/2020-66-0x000000000046115E-mapping.dmp	family_agenttesla
behavioral1/memory/2020-68-0x0000000000400000-0x0000000000466000-memory.dmp	family_agenttesla
behavioral1/memory/2020-70-0x0000000000400000-0x0000000000466000-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:

PO#209027_xlxs.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	PO#209027_xlxs.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PO#209027_xlxs.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:

PO#209027_xlxs.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	PO#209027_xlxs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#209027_xlxs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#209027_xlxs.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:

PO#209027_xlxs.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	PO#209027_xlxs.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	PO#209027_xlxs.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO#209027_xlxs.exe

description pid process target process

PID 948 set thread context of 2020 948 PO#209027_xlxs.exe PO#209027_xlxs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1008 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

PO#209027_xlxs.exePO#209027_xlxs.exe

pid process

948 PO#209027_xlxs.exe
948 PO#209027_xlxs.exe
948 PO#209027_xlxs.exe
2020 PO#209027_xlxs.exe
2020 PO#209027_xlxs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO#209027_xlxs.exePO#209027_xlxs.exe

description pid process

Token: SeDebugPrivilege 948 PO#209027_xlxs.exe
Token: SeDebugPrivilege 2020 PO#209027_xlxs.exe

description	pid	process	target process
PID 948 set thread context of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe

pid	process
1008	schtasks.exe

pid	process
948	PO#209027_xlxs.exe
948	PO#209027_xlxs.exe
948	PO#209027_xlxs.exe
2020	PO#209027_xlxs.exe
2020	PO#209027_xlxs.exe

description	pid	process
Token: SeDebugPrivilege	948	PO#209027_xlxs.exe
Token: SeDebugPrivilege	2020	PO#209027_xlxs.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

PO#209027_xlxs.exe

description	pid	process	target process
PID 948 wrote to memory of 1008	948	PO#209027_xlxs.exe	schtasks.exe
PID 948 wrote to memory of 1008	948	PO#209027_xlxs.exe	schtasks.exe
PID 948 wrote to memory of 1008	948	PO#209027_xlxs.exe	schtasks.exe
PID 948 wrote to memory of 1008	948	PO#209027_xlxs.exe	schtasks.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe
PID 948 wrote to memory of 2020	948	PO#209027_xlxs.exe	PO#209027_xlxs.exe

outlook_office_path 1 IoCs

Processes:

PO#209027_xlxs.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	PO#209027_xlxs.exe

outlook_win_path 1 IoCs

Processes:

PO#209027_xlxs.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	PO#209027_xlxs.exe

C:\Users\Admin\AppData\Local\Temp\PO#209027_xlxs.exe
"C:\Users\Admin\AppData\Local\Temp\PO#209027_xlxs.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:948

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ahCXFyIfWTcdb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9177.tmp"
2⤵
- Creates scheduled task(s)
PID:1008

C:\Users\Admin\AppData\Local\Temp\PO#209027_xlxs.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2020

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

3

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

C:\Users\Admin\AppData\Local\Temp\tmp9177.tmp
Filesize
1KB

MD5
2f0d3dade565041ecadb7ac55d3dd155

SHA1
7ecbc67ec4d399cf1c6f32d7f4d21ba578ea4de6

SHA256
d7c016b15449d811563025d8e4051755c99b5172b96c000dfba39c705e455da4

SHA512
ec9ff440c9744aa318d63d4858d182e8301b61fe8f2aa120b65f9d617eb1c6445012e0f3435f6ab5013c537742299f4930fb0be553df4661a2380b3e1d6b7cef

Download Submit
memory/948-54-0x00000000002F0000-0x0000000000390000-memory.dmp

Filesize
640KB

Download
memory/948-55-0x0000000000500000-0x000000000050A000-memory.dmp

Filesize
40KB

Download
memory/948-56-0x0000000004A40000-0x0000000004ACA000-memory.dmp

Filesize
552KB

Download
memory/948-57-0x0000000001D30000-0x0000000001DB2000-memory.dmp

Filesize
520KB

Download
memory/1008-58-0x0000000000000000-mapping.dmp

Download
memory/2020-60-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2020-63-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2020-61-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2020-64-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2020-65-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2020-66-0x000000000046115E-mapping.dmp

Download
memory/2020-68-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2020-70-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/2020-71-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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