agenttesla | 34323ddb331fe234555a9e937aa37b956c92e5f78702de33de20ab5b72753c6c

General

Target

k5jT8OXjl89E0ZP.exe
Size

443KB
MD5

1154a1e546242fce05b19e57f4d51b70
SHA1

66474ee898e14250c3ffeab9335420b3bcf649b8
SHA256

77a9652b29e432e9a9bdf2698fc841b88153739300f329d39fc8ada898390539
SHA512

356d8f4bdc60e1d571726d59c0435219e4325f1673cf30f36a4d12a540595a5b88f8460c592f0cd1f8c9d1d86335101679e3db4ee1f4338b734c59c03c58792a

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.forapro-ru.com
Port:
587
Username:
[email protected]
Password:
FLYY)RH0

Signatures

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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/960-56-0x0000000000580000-0x0000000000588000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1104-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1104-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1104-66-0x000000000044CCDE-mapping.dmp	family_agenttesla
behavioral1/memory/1104-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1104-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1104-70-0x0000000000400000-0x0000000000452000-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/960-57-0x0000000004A70000-0x0000000004ACA000-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:

k5jT8OXjl89E0ZP.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	k5jT8OXjl89E0ZP.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	k5jT8OXjl89E0ZP.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:

k5jT8OXjl89E0ZP.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k5jT8OXjl89E0ZP.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k5jT8OXjl89E0ZP.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k5jT8OXjl89E0ZP.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:

k5jT8OXjl89E0ZP.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	k5jT8OXjl89E0ZP.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	k5jT8OXjl89E0ZP.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

k5jT8OXjl89E0ZP.exe

description pid process target process

PID 960 set thread context of 1104 960 k5jT8OXjl89E0ZP.exe k5jT8OXjl89E0ZP.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

996 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

k5jT8OXjl89E0ZP.exek5jT8OXjl89E0ZP.exe

pid process

960 k5jT8OXjl89E0ZP.exe
1104 k5jT8OXjl89E0ZP.exe
1104 k5jT8OXjl89E0ZP.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

k5jT8OXjl89E0ZP.exek5jT8OXjl89E0ZP.exe

description pid process

Token: SeDebugPrivilege 960 k5jT8OXjl89E0ZP.exe
Token: SeDebugPrivilege 1104 k5jT8OXjl89E0ZP.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

k5jT8OXjl89E0ZP.exe

pid process

1104 k5jT8OXjl89E0ZP.exe

description	pid	process	target process
PID 960 set thread context of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe

pid	process
996	schtasks.exe

pid	process
960	k5jT8OXjl89E0ZP.exe
1104	k5jT8OXjl89E0ZP.exe
1104	k5jT8OXjl89E0ZP.exe

description	pid	process
Token: SeDebugPrivilege	960	k5jT8OXjl89E0ZP.exe
Token: SeDebugPrivilege	1104	k5jT8OXjl89E0ZP.exe

pid	process
1104	k5jT8OXjl89E0ZP.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

k5jT8OXjl89E0ZP.exek5jT8OXjl89E0ZP.exe

description	pid	process	target process
PID 960 wrote to memory of 996	960	k5jT8OXjl89E0ZP.exe	schtasks.exe
PID 960 wrote to memory of 996	960	k5jT8OXjl89E0ZP.exe	schtasks.exe
PID 960 wrote to memory of 996	960	k5jT8OXjl89E0ZP.exe	schtasks.exe
PID 960 wrote to memory of 996	960	k5jT8OXjl89E0ZP.exe	schtasks.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 960 wrote to memory of 1104	960	k5jT8OXjl89E0ZP.exe	k5jT8OXjl89E0ZP.exe
PID 1104 wrote to memory of 1972	1104	k5jT8OXjl89E0ZP.exe	netsh.exe
PID 1104 wrote to memory of 1972	1104	k5jT8OXjl89E0ZP.exe	netsh.exe
PID 1104 wrote to memory of 1972	1104	k5jT8OXjl89E0ZP.exe	netsh.exe
PID 1104 wrote to memory of 1972	1104	k5jT8OXjl89E0ZP.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

k5jT8OXjl89E0ZP.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k5jT8OXjl89E0ZP.exe

outlook_win_path 1 IoCs

Processes:

k5jT8OXjl89E0ZP.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	k5jT8OXjl89E0ZP.exe

C:\Users\Admin\AppData\Local\Temp\k5jT8OXjl89E0ZP.exe
"C:\Users\Admin\AppData\Local\Temp\k5jT8OXjl89E0ZP.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:960

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OJBVaR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBE41.tmp"
2⤵
- Creates scheduled task(s)
PID:996

C:\Users\Admin\AppData\Local\Temp\k5jT8OXjl89E0ZP.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1104

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:1972

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\tmpBE41.tmp
Filesize
1KB

MD5
7f19ee9e1aa4de48e5ada80601bce1ed

SHA1
d15a7d1c6a5657fb03a7864f9ef8d1bac226cd86

SHA256
891eefc648d4ea3d4c1d424bb05a31b9d9303852f38e5cc7b4fee897e9bb89a1

SHA512
a8f1029fbba8bb6e07a8843a0eac7906d6306d7c9f522b11822e0895808526cc8548a93d382836e2216510e0ac3e512662d47838307fd94c52c8f49e2a538fef

Download Submit
memory/960-54-0x0000000001260000-0x00000000012D6000-memory.dmp

Filesize
472KB

Download
memory/960-55-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Filesize
8KB

Download
memory/960-56-0x0000000000580000-0x0000000000588000-memory.dmp

Filesize
32KB

Download
memory/960-57-0x0000000004A70000-0x0000000004ACA000-memory.dmp

Filesize
360KB

Download
memory/996-58-0x0000000000000000-mapping.dmp

Download
memory/1104-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1104-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1104-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1104-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1104-66-0x000000000044CCDE-mapping.dmp

Download
memory/1104-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1104-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1104-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1972-72-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads