agenttesla | 4fb00a91b1354d8420917f016c2f314aab25daa92fb3ed07f848ff22a5cdd5ff

General

Target

9e0braIF6GqN11c.exe
Size

593KB
MD5

2a2e788233378b34631ff35bd458bae3
SHA1

cc2e92b599721366c21ff0ce8f58c64f8c7e7e6d
SHA256

162a5aa5e6e0298edbae1a494d2a3e177f0fb42b1c2e35eaecdbe1715d519694
SHA512

cfebcd3315fa42733c8f3780abea85c8f45630b3899e1d1fc25cc60df1ee33321d2f81c8d8105cbc4034b14de40fc82e609ea06ae73460875a56194773ff026e

Score

10^/10

agenttesla collection evasion keylogger persistence rezer0 spyware stealer trojan

Malware Config

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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1100-62-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/1100-63-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/1100-64-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/1100-65-0x000000000044806E-mapping.dmp	family_agenttesla
behavioral1/memory/1100-67-0x0000000000400000-0x000000000044E000-memory.dmp	family_agenttesla
behavioral1/memory/1100-69-0x0000000000400000-0x000000000044E000-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/1420-56-0x0000000001ED0000-0x0000000001F24000-memory.dmp	rezer0

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\VideoBiosVersion	9e0braIF6GqN11c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9e0braIF6GqN11c.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	9e0braIF6GqN11c.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\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-1-5-21-2277218442-1199762539-2004043321-1000\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 1420 set thread context of 1100 1420 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

1644 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

9e0braIF6GqN11c.exe9e0braIF6GqN11c.exe

pid process

1420 9e0braIF6GqN11c.exe
1420 9e0braIF6GqN11c.exe
1420 9e0braIF6GqN11c.exe
1100 9e0braIF6GqN11c.exe
1100 9e0braIF6GqN11c.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

9e0braIF6GqN11c.exe9e0braIF6GqN11c.exe

description pid process

Token: SeDebugPrivilege 1420 9e0braIF6GqN11c.exe
Token: SeDebugPrivilege 1100 9e0braIF6GqN11c.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

9e0braIF6GqN11c.exe

pid process

1100 9e0braIF6GqN11c.exe

description	pid	process	target process
PID 1420 set thread context of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe

pid	process
1644	schtasks.exe

pid	process
1420	9e0braIF6GqN11c.exe
1420	9e0braIF6GqN11c.exe
1420	9e0braIF6GqN11c.exe
1100	9e0braIF6GqN11c.exe
1100	9e0braIF6GqN11c.exe

description	pid	process
Token: SeDebugPrivilege	1420	9e0braIF6GqN11c.exe
Token: SeDebugPrivilege	1100	9e0braIF6GqN11c.exe

pid	process
1100	9e0braIF6GqN11c.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

9e0braIF6GqN11c.exe

description	pid	process	target process
PID 1420 wrote to memory of 1644	1420	9e0braIF6GqN11c.exe	schtasks.exe
PID 1420 wrote to memory of 1644	1420	9e0braIF6GqN11c.exe	schtasks.exe
PID 1420 wrote to memory of 1644	1420	9e0braIF6GqN11c.exe	schtasks.exe
PID 1420 wrote to memory of 1644	1420	9e0braIF6GqN11c.exe	schtasks.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe
PID 1420 wrote to memory of 1100	1420	9e0braIF6GqN11c.exe	9e0braIF6GqN11c.exe

outlook_office_path 1 IoCs

Processes:

9e0braIF6GqN11c.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	9e0braIF6GqN11c.exe

outlook_win_path 1 IoCs

Processes:

9e0braIF6GqN11c.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	9e0braIF6GqN11c.exe

C:\Users\Admin\AppData\Local\Temp\9e0braIF6GqN11c.exe
"C:\Users\Admin\AppData\Local\Temp\9e0braIF6GqN11c.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:1420

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KPPEFUGjemHBr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD5A.tmp"
2⤵
- Creates scheduled task(s)
PID:1644

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:1100

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Modify Registry

1

T1112

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\tmpD5A.tmp
Filesize
1KB

MD5
8934d3f476594c368ec5af324255344b

SHA1
7911e754bbf41f8334d339ab59723c5ee52690b4

SHA256
30b5b0babab2c786786f6a6559d2a2c6ceb782a092266bb9fdd162d2bf572ead

SHA512
365c6c11d61c2f4a597faeba1fc26afbecdb829caadbad7869f424169742889ecff1b0aa8fdd4b8db4244ff58057080c9899ff3cbde3dd292d10c690aa0b006c

Download Submit
memory/1100-64-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1100-59-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1100-60-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1100-62-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1100-63-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1100-65-0x000000000044806E-mapping.dmp

Download
memory/1100-67-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1100-69-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1100-70-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download
memory/1420-56-0x0000000001ED0000-0x0000000001F24000-memory.dmp

Filesize
336KB

Download
memory/1420-55-0x0000000000410000-0x0000000000424000-memory.dmp

Filesize
80KB

Download
memory/1420-54-0x00000000009B0000-0x0000000000A4A000-memory.dmp

Filesize
616KB

Download
memory/1644-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads