agenttesla | cfdf72c413b07e1a7734edba789449e83b0631fcf768c542368585f0582f4c30

General

Target

inquiry.exe
Size

708KB
MD5

85ac7ba9fbcc19d097745a6b26c2ab66
SHA1

aaf235117f5d6b681c805d48506a4a0eacafcfb6
SHA256

a8a9e1ebbe728b5782a903729896edf68191c3d3af656feac7d9ac590b717e66
SHA512

6f0c15137a057d686dabee63812df7a38564c347418eea10bf0d81db7544e5ef8eb5389102b26877212c7014e44c152629e2fa4697621a5007fb38d180764ee4

Score

10^/10

agenttesla collection 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

AgentTesla Payload 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1532-64-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1532-65-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1532-66-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1532-67-0x000000000044CA9E-mapping.dmp	family_agenttesla
behavioral1/memory/1532-69-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral1/memory/1532-71-0x0000000000400000-0x0000000000452000-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/1348-58-0x0000000000830000-0x0000000000888000-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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	inquiry.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	inquiry.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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 1348 set thread context of 1532 1348 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

660 schtasks.exe
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

inquiry.exeinquiry.exe

pid process

1348 inquiry.exe
1348 inquiry.exe
1348 inquiry.exe
1348 inquiry.exe
1348 inquiry.exe
1532 inquiry.exe
1532 inquiry.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

inquiry.exeinquiry.exe

description pid process

Token: SeDebugPrivilege 1348 inquiry.exe
Token: SeDebugPrivilege 1532 inquiry.exe

description	pid	process	target process
PID 1348 set thread context of 1532	1348	inquiry.exe	inquiry.exe

pid	process
660	schtasks.exe

pid	process
1348	inquiry.exe
1348	inquiry.exe
1348	inquiry.exe
1348	inquiry.exe
1348	inquiry.exe
1532	inquiry.exe
1532	inquiry.exe

description	pid	process
Token: SeDebugPrivilege	1348	inquiry.exe
Token: SeDebugPrivilege	1532	inquiry.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

inquiry.exeinquiry.exe

description	pid	process	target process
PID 1348 wrote to memory of 660	1348	inquiry.exe	schtasks.exe
PID 1348 wrote to memory of 660	1348	inquiry.exe	schtasks.exe
PID 1348 wrote to memory of 660	1348	inquiry.exe	schtasks.exe
PID 1348 wrote to memory of 660	1348	inquiry.exe	schtasks.exe
PID 1348 wrote to memory of 1624	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1624	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1624	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1624	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1652	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1652	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1652	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1652	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1348 wrote to memory of 1532	1348	inquiry.exe	inquiry.exe
PID 1532 wrote to memory of 980	1532	inquiry.exe	netsh.exe
PID 1532 wrote to memory of 980	1532	inquiry.exe	netsh.exe
PID 1532 wrote to memory of 980	1532	inquiry.exe	netsh.exe
PID 1532 wrote to memory of 980	1532	inquiry.exe	netsh.exe

outlook_office_path 1 IoCs

Processes:

inquiry.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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-1-5-21-1083475884-596052423-1669053738-1000\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:1348

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\spXnPYE" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3322.tmp"
2⤵
- Creates scheduled task(s)
PID:660

C:\Users\Admin\AppData\Local\Temp\inquiry.exe
"{path}"
2⤵
PID:1624

C:\Users\Admin\AppData\Local\Temp\inquiry.exe
"{path}"
2⤵
PID:1652

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:1532

C:\Windows\SysWOW64\netsh.exe
"netsh" wlan show profile
3⤵
PID:980

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3322.tmp
Filesize
1KB

MD5
4ef60d4381f6025ef8b794b7b7950771

SHA1
d451de11247b81468618ed8718fb577db6583cda

SHA256
a5fc94e8abeff170d0ceda2e6b4b919cd5ecb9f9be6ecd4c60e0acd028f9d816

SHA512
99280dfc5f21266319e2c68ad8997ef17871664ceae1dec929323e888f7ccb76643698cddff24770cdc1b6f8570ff2ba413dcebd55177c90b4978f886554beb6

Download Submit
memory/660-59-0x0000000000000000-mapping.dmp

Download
memory/980-73-0x0000000000000000-mapping.dmp

Download
memory/1348-54-0x00000000000D0000-0x0000000000188000-memory.dmp

Filesize
736KB

Download
memory/1348-55-0x0000000006FC0000-0x000000000706A000-memory.dmp

Filesize
680KB

Download
memory/1348-56-0x0000000075951000-0x0000000075953000-memory.dmp

Filesize
8KB

Download
memory/1348-57-0x00000000002D0000-0x00000000002D8000-memory.dmp

Filesize
32KB

Download
memory/1348-58-0x0000000000830000-0x0000000000888000-memory.dmp

Filesize
352KB

Download
memory/1532-62-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1532-64-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1532-65-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1532-66-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1532-67-0x000000000044CA9E-mapping.dmp

Download
memory/1532-69-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1532-71-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1532-61-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads