agenttesla | cf6e3f0ce8b1a59ec6505147e394a273eb55f7c987faec8824001419ac4e807e

General

Target

Inquiry.exe
Size

464KB
MD5

ed7359e4b434485f01549ef3ad72a85f
SHA1

aaa4b1d3fa30d0c1ab32b4fa11139914070e29b4
SHA256

ba123e2be2891c5decb58c5f87b722e363a86679d7823bc01f93cf58f1c8973a
SHA512

64b93b5b131d17f2b5eb8d741a620420620663bc9ced3aeb6644c68c35c6c7d6d2df537693a9b9c3d0ad4afb8ee59f77a24c3f7cec608d5cb33e366f14db7788

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Credentials

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

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1700-139-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla

CoreCCC Packer 1 IoCs

Detects CoreCCC packer used to load .NET malware.

Processes:

resource	yara_rule
behavioral2/memory/4072-130-0x00000000008A0000-0x000000000091A000-memory.dmp	coreccc

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:

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

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:

Inquiry.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation 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

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

Inquiry.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Inquiry.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Inquiry.exe
Key opened	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Inquiry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Inquiry.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Inquiry.exe

description pid process target process

PID 4072 set thread context of 1700 4072 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

4748 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Inquiry.exeInquiry.exe

pid process

4072 Inquiry.exe
1700 Inquiry.exe
1700 Inquiry.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Inquiry.exeInquiry.exe

description pid process

Token: SeDebugPrivilege 4072 Inquiry.exe
Token: SeDebugPrivilege 1700 Inquiry.exe

description	pid	process	target process
PID 4072 set thread context of 1700	4072	Inquiry.exe	Inquiry.exe

pid	process
4748	schtasks.exe

pid	process
4072	Inquiry.exe
1700	Inquiry.exe
1700	Inquiry.exe

description	pid	process
Token: SeDebugPrivilege	4072	Inquiry.exe
Token: SeDebugPrivilege	1700	Inquiry.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Inquiry.exeInquiry.exe

description	pid	process	target process
PID 4072 wrote to memory of 4748	4072	Inquiry.exe	schtasks.exe
PID 4072 wrote to memory of 4748	4072	Inquiry.exe	schtasks.exe
PID 4072 wrote to memory of 4748	4072	Inquiry.exe	schtasks.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 4072 wrote to memory of 1700	4072	Inquiry.exe	Inquiry.exe
PID 1700 wrote to memory of 5028	1700	Inquiry.exe	netsh.exe
PID 1700 wrote to memory of 5028	1700	Inquiry.exe	netsh.exe
PID 1700 wrote to memory of 5028	1700	Inquiry.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

Inquiry.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	Inquiry.exe

outlook_win_path 1 IoCs

Processes:

Inquiry.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	Inquiry.exe

C:\Users\Admin\AppData\Local\Temp\Inquiry.exe
"C:\Users\Admin\AppData\Local\Temp\Inquiry.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:4072

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ghyXAAsyYqSuk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFB8B.tmp"
2⤵
- Creates scheduled task(s)
PID:4748

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:1700

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:5028

Network

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

5

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

4

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\Microsoft\CLR_v4.0_32\UsageLogs\Inquiry.exe.log
Filesize
1KB

MD5
e08f822522c617a40840c62e4b0fb45e

SHA1
ae516dca4da5234be6676d3f234c19ec55725be7

SHA256
bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7

SHA512
894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFB8B.tmp
Filesize
1KB

MD5
26adbd23a39b2172be922f5abef4e62d

SHA1
4c6ebf0970ab63803eba9f68b5dbb92a61b90880

SHA256
9a6ca6fa739fc135fb6167f9e38d3cf52b806766334a99ef2e869df20c9c35e1

SHA512
fa99d7f4014a05baf5edec2b1e8beb677b7a03cb96a6c574d290a8f2fbaf57b029df938aae5fbe9f309f4d84303ac16d838392df0f800768cf1e164e11f10859

Download Submit
memory/1700-141-0x0000000006AE0000-0x0000000006B30000-memory.dmp

Filesize
320KB

Download
memory/1700-139-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1700-138-0x0000000000000000-mapping.dmp

Download
memory/4072-133-0x0000000002E70000-0x0000000002E7A000-memory.dmp

Filesize
40KB

Download
memory/4072-135-0x0000000008F50000-0x0000000008FB6000-memory.dmp

Filesize
408KB

Download
memory/4072-134-0x0000000008DB0000-0x0000000008E4C000-memory.dmp

Filesize
624KB

Download
memory/4072-130-0x00000000008A0000-0x000000000091A000-memory.dmp

Filesize
488KB

Download
memory/4072-132-0x00000000052F0000-0x0000000005382000-memory.dmp

Filesize
584KB

Download
memory/4072-131-0x00000000059B0000-0x0000000005F54000-memory.dmp

Filesize
5.6MB

Download
memory/4748-136-0x0000000000000000-mapping.dmp

Download
memory/5028-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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