agenttesla | cf6e3f0ce8b1a59ec6505147e394a273eb55f7c987faec8824001419ac4e807e

General

Target

Inquiry.exe
Size

464KB
MD5

ed7359e4b434485f01549ef3ad72a85f
SHA1

aaa4b1d3fa30d0c1ab32b4fa11139914070e29b4
SHA256

ba123e2be2891c5decb58c5f87b722e363a86679d7823bc01f93cf58f1c8973a
SHA512

64b93b5b131d17f2b5eb8d741a620420620663bc9ced3aeb6644c68c35c6c7d6d2df537693a9b9c3d0ad4afb8ee59f77a24c3f7cec608d5cb33e366f14db7788

Score

10^/10

agenttesla collection coreentity evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.ru
Port:
587
Username:
[email protected]
Password:
bambam10

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/1380-56-0x00000000005B0000-0x00000000005B8000-memory.dmp	coreentity

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1800-63-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1800-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1800-66-0x000000000044CAAE-mapping.dmp	family_agenttesla
behavioral1/memory/1800-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1800-68-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1800-70-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

CoreCCC Packer 1 IoCs

Detects CoreCCC packer used to load .NET malware.

Processes:

resource	yara_rule
behavioral1/memory/1380-54-0x0000000000AE0000-0x0000000000B5A000-memory.dmp	coreccc

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/1380-57-0x00000000048E0000-0x0000000004938000-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:

Inquiry.exe

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

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

Inquiry.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

Inquiry.exe

description pid process target process

PID 1380 set thread context of 1800 1380 Inquiry.exe Inquiry.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

1976 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Inquiry.exeInquiry.exe

pid process

1380 Inquiry.exe
1800 Inquiry.exe
1800 Inquiry.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Inquiry.exeInquiry.exe

description pid process

Token: SeDebugPrivilege 1380 Inquiry.exe
Token: SeDebugPrivilege 1800 Inquiry.exe

description	pid	process	target process
PID 1380 set thread context of 1800	1380	Inquiry.exe	Inquiry.exe

pid	process
1976	schtasks.exe

pid	process
1380	Inquiry.exe
1800	Inquiry.exe
1800	Inquiry.exe

description	pid	process
Token: SeDebugPrivilege	1380	Inquiry.exe
Token: SeDebugPrivilege	1800	Inquiry.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Inquiry.exeInquiry.exe

description	pid	process	target process
PID 1380 wrote to memory of 1976	1380	Inquiry.exe	schtasks.exe
PID 1380 wrote to memory of 1976	1380	Inquiry.exe	schtasks.exe
PID 1380 wrote to memory of 1976	1380	Inquiry.exe	schtasks.exe
PID 1380 wrote to memory of 1976	1380	Inquiry.exe	schtasks.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1380 wrote to memory of 1800	1380	Inquiry.exe	Inquiry.exe
PID 1800 wrote to memory of 468	1800	Inquiry.exe	netsh.exe
PID 1800 wrote to memory of 468	1800	Inquiry.exe	netsh.exe
PID 1800 wrote to memory of 468	1800	Inquiry.exe	netsh.exe
PID 1800 wrote to memory of 468	1800	Inquiry.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

Inquiry.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	Inquiry.exe

outlook_win_path 1 IoCs

Processes:

Inquiry.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	Inquiry.exe

C:\Users\Admin\AppData\Local\Temp\Inquiry.exe
"C:\Users\Admin\AppData\Local\Temp\Inquiry.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:1380

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ghyXAAsyYqSuk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp80D.tmp"
2⤵
- Creates scheduled task(s)
PID:1976

C:\Users\Admin\AppData\Local\Temp\Inquiry.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1800

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:468

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\tmp80D.tmp
Filesize
1KB

MD5
948271bf17eeb7dfa101423c0ccd6d8c

SHA1
6a9042e88892372164539efbdb4b34bd612adb93

SHA256
ea87d240ff027ad9508a3925e7eaf38bd0fe49b5fe11138201b23a7f91c890d7

SHA512
746f9f58be0c2fb7fa8b035477b5cafef3831e4c6cb5f4c46997f57969e4eb58a7fdb7dfc0f7dde27fe297bae45694096476ff6d2c3946e169356b06fc1d8031

Download Submit
memory/468-72-0x0000000000000000-mapping.dmp

Download
memory/1380-54-0x0000000000AE0000-0x0000000000B5A000-memory.dmp

Filesize
488KB

Download
memory/1380-55-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/1380-56-0x00000000005B0000-0x00000000005B8000-memory.dmp

Filesize
32KB

Download
memory/1380-57-0x00000000048E0000-0x0000000004938000-memory.dmp

Filesize
352KB

Download
memory/1800-60-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1800-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1800-63-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1800-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1800-66-0x000000000044CAAE-mapping.dmp

Download
memory/1800-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1800-68-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1800-70-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1976-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads