agenttesla | 0e9d40a6224af32e7fc0878ce4fb51cdb0c9d179f64d3bc5b6a1f1478c512960

General

Target

Quotation.exe
Size

510KB
MD5

c856ab4630c743620d58a8b909450ad1
SHA1

a2637da63688fed49c35a86e4dbaacbdd2799c3f
SHA256

0e9d40a6224af32e7fc0878ce4fb51cdb0c9d179f64d3bc5b6a1f1478c512960
SHA512

e2ddddd27f56b8a506305ae21e0f44150ef174db7d461963c1f5b1eb5cc8cc28bffae3bf775da7187d50fa7dd7d817370aaa1ab41dc76b8a7c5dfb82867fae4d

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.actionassist.co.uk
Port:
587
Username:
[email protected]
Password:
benjamin76

Signatures

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

AgentTesla Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/848-4-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/848-5-0x0000000000447F0E-mapping.dmp	family_agenttesla
behavioral1/memory/848-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/848-7-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

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:

Quotation.exe

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

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

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

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

Data from Local System
T1005

Credentials in Files
T1081

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:

Quotation.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

Quotation.exe

description pid process target process

PID 1500 set thread context of 848 1500 Quotation.exe Quotation.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

1800 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Quotation.exe

pid process

848 Quotation.exe
848 Quotation.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Quotation.exe

description pid process

Token: SeDebugPrivilege 848 Quotation.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Quotation.exe

pid process

848 Quotation.exe

description	pid	process	target process
PID 1500 set thread context of 848	1500	Quotation.exe	Quotation.exe

pid	process
1800	schtasks.exe

pid	process
848	Quotation.exe
848	Quotation.exe

description	pid	process
Token: SeDebugPrivilege	848	Quotation.exe

pid	process
848	Quotation.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Quotation.exe

description	pid	process	target process
PID 1500 wrote to memory of 1800	1500	Quotation.exe	schtasks.exe
PID 1500 wrote to memory of 1800	1500	Quotation.exe	schtasks.exe
PID 1500 wrote to memory of 1800	1500	Quotation.exe	schtasks.exe
PID 1500 wrote to memory of 1800	1500	Quotation.exe	schtasks.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe
PID 1500 wrote to memory of 848	1500	Quotation.exe	Quotation.exe

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1500

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qjojKsx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2635.tmp"
2⤵
- Creates scheduled task(s)
PID:1800

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"{path}"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:848

Network

MITRE ATT&CK Enterprise 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

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2635.tmp

MD5
7f812793b930ae6385bb8a80fd8aab20

SHA1
f46ff70a185a14b453538591bca508afd61f7fdd

SHA256
9f05187bc4ac251c12d2d234b4ff9048ac892b189e5f94c07e95761d2157ab9a

SHA512
75653edf412b41fe06549619a82c35e7ea156f51cadb7f985dd4224fe2c868c048c993f3ce7e960230bb34777f51facbf9b46a7af898b16a937aeb06d4d0d626

Download Submit
memory/848-4-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/848-5-0x0000000000447F0E-mapping.dmp

Download
memory/848-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/848-7-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1500-1-0x0000000000000000-0x0000000000000000-disk.dmp

Download
memory/1800-2-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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