agenttesla | 4fb00a91b1354d8420917f016c2f314aab25daa92fb3ed07f848ff22a5cdd5ff

Analysis

max time kernel
124s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 12:03

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General

Target

9e0braIF6GqN11c.exe
Size

593KB
MD5

2a2e788233378b34631ff35bd458bae3
SHA1

cc2e92b599721366c21ff0ce8f58c64f8c7e7e6d
SHA256

162a5aa5e6e0298edbae1a494d2a3e177f0fb42b1c2e35eaecdbe1715d519694
SHA512

cfebcd3315fa42733c8f3780abea85c8f45630b3899e1d1fc25cc60df1ee33321d2f81c8d8105cbc4034b14de40fc82e609ea06ae73460875a56194773ff026e

Score

10^/10

agenttesla collection evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
jonathan.grupomonge@yandex.com
Password:
j4k4rta234

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
jonathan.grupomonge@yandex.com
Password:
j4k4rta234

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4824-138-0x0000000000400000-0x000000000044E000-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:

9e0braIF6GqN11c.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	9e0braIF6GqN11c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	9e0braIF6GqN11c.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

9e0braIF6GqN11c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	9e0braIF6GqN11c.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:

9e0braIF6GqN11c.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9e0braIF6GqN11c.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9e0braIF6GqN11c.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9e0braIF6GqN11c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9e0braIF6GqN11c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YwxGLc = "C:\\Users\\Admin\\AppData\\Local\\Temp\\YwxGLc\\YwxGLc.exe"	9e0braIF6GqN11c.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:

9e0braIF6GqN11c.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	9e0braIF6GqN11c.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	9e0braIF6GqN11c.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

9e0braIF6GqN11c.exe

description pid process target process

PID 4744 set thread context of 4824 4744 9e0braIF6GqN11c.exe 9e0braIF6GqN11c.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

4788 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

9e0braIF6GqN11c.exe9e0braIF6GqN11c.exe

pid process

4744 9e0braIF6GqN11c.exe
4744 9e0braIF6GqN11c.exe
4744 9e0braIF6GqN11c.exe
4744 9e0braIF6GqN11c.exe
4824 9e0braIF6GqN11c.exe
4824 9e0braIF6GqN11c.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

9e0braIF6GqN11c.exe9e0braIF6GqN11c.exe

description pid process

Token: SeDebugPrivilege 4744 9e0braIF6GqN11c.exe
Token: SeDebugPrivilege 4824 9e0braIF6GqN11c.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

9e0braIF6GqN11c.exe

pid process

4824 9e0braIF6GqN11c.exe

description	pid	process	target process
PID 4744 set thread context of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe

pid	process
4788	schtasks.exe

pid	process
4744	9e0braIF6GqN11c.exe
4744	9e0braIF6GqN11c.exe
4744	9e0braIF6GqN11c.exe
4744	9e0braIF6GqN11c.exe
4824	9e0braIF6GqN11c.exe
4824	9e0braIF6GqN11c.exe

description	pid	process
Token: SeDebugPrivilege	4744	9e0braIF6GqN11c.exe
Token: SeDebugPrivilege	4824	9e0braIF6GqN11c.exe

pid	process
4824	9e0braIF6GqN11c.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

9e0braIF6GqN11c.exe

description	pid	process	target process
PID 4744 wrote to memory of 4788	4744	9e0braIF6GqN11c.exe	schtasks.exe
PID 4744 wrote to memory of 4788	4744	9e0braIF6GqN11c.exe	schtasks.exe
PID 4744 wrote to memory of 4788	4744	9e0braIF6GqN11c.exe	schtasks.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 4744 wrote to memory of 4824	4744	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe

outlook_office_path 1 IoCs

Processes:

9e0braIF6GqN11c.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9e0braIF6GqN11c.exe

outlook_win_path 1 IoCs

Processes:

9e0braIF6GqN11c.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9e0braIF6GqN11c.exe

C:\Users\Admin\AppData\Local\Temp\9e0braIF6GqN11c.exe
"C:\Users\Admin\AppData\Local\Temp\9e0braIF6GqN11c.exe"
1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4744

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KPPEFUGjemHBr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D09.tmp"
2⤵
- Creates scheduled task(s)
PID:4788

C:\Users\Admin\AppData\Local\Temp\9e0braIF6GqN11c.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:4824

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\9e0braIF6GqN11c.exe.log
Filesize
599B

MD5
327812399a13e05d78e14626d48bc050

SHA1
8584cf27b3eb6f345b53bac8ba392ba227f64e22

SHA256
5e1d2615757ea2cc8a0b0f2c7ec0b9919f43d7fc01b53905510058cea1821224

SHA512
dbd93336cf1f241a345027b8e111e02e2eb0156a348a377169c623df1b93e57bf5a4d416af3bae4c4739ffe9f9419b8a7a787167f7f04bcf1aeff27ca38108a9

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3D09.tmp
Filesize
1KB

MD5
8226bc005fb9d0964d8e243412a14817

SHA1
573474794b640f1d2f134648dccaccb52e431b2f

SHA256
00f5e3a49b5b94e1ebda53d4703d753f14c5e0ec4ee8a27035d061210716901b

SHA512
1933e27aa65fa5ef883c9a1e7194b5d26f9fe0ce19dced8d13ea8aeda5b680709cc357c6142c4f263eab40e15429c9c9e20a4c01d5d87ebf9d417fa1ba1b117f

Download Submit
memory/4744-130-0x0000000000390000-0x000000000042A000-memory.dmp

Filesize
616KB

Download
memory/4744-131-0x0000000007A00000-0x0000000007FA4000-memory.dmp

Filesize
5.6MB

Download
memory/4744-132-0x0000000007630000-0x00000000076C2000-memory.dmp

Filesize
584KB

Download
memory/4744-133-0x0000000007770000-0x000000000780C000-memory.dmp

Filesize
624KB

Download
memory/4744-134-0x0000000008380000-0x00000000083E6000-memory.dmp

Filesize
408KB

Download
memory/4788-135-0x0000000000000000-mapping.dmp

Download
memory/4824-137-0x0000000000000000-mapping.dmp

Download
memory/4824-138-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4824-140-0x0000000006840000-0x0000000006890000-memory.dmp

Filesize
320KB

Download
memory/4824-141-0x0000000006B90000-0x0000000006B9A000-memory.dmp

Filesize
40KB

Download