agenttesla | a0e4e94c8053ec121c0f5735ee40a857cb8906df804f2fc17b5f9d04193ca3b9

General

Target

1604228P.exe
Size

802KB
MD5

c5c2e7ed751bf5a92f4db09770c36233
SHA1

34d5f8d03829f0150d2900ffc8a899bfce4724f5
SHA256

57dcf40358fb6f41a6b1e68d380f85db9aa67481f25fa8df5a56e8ae5ec36eb5
SHA512

dae1a77e9c90ebe6373078660e0642a8c6686cf6deb5396a4d58281f1c15d7925d2b258c345e62f321502d3fb96c88b03727fafaddf12b82fafb77dbccffb40d

Score

10^/10

agenttesla collection evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.dogulumetal.com
Port:
587
Username:
[email protected]
Password:
DMaslak2950**

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/1712-64-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/1712-65-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/1712-67-0x000000000045345E-mapping.dmp	family_agenttesla
behavioral1/memory/1712-66-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/1712-69-0x0000000000400000-0x0000000000458000-memory.dmp	family_agenttesla
behavioral1/memory/1712-71-0x0000000000400000-0x0000000000458000-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:

1604228P.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1604228P.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1604228P.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:

1604228P.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	1604228P.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1604228P.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	1604228P.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:

1604228P.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	1604228P.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	1604228P.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

1604228P.exe

description pid process target process

PID 1240 set thread context of 1712 1240 1604228P.exe 1604228P.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

1864 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

1604228P.exe

pid process

1712 1604228P.exe
1712 1604228P.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

1604228P.exe

description pid process

Token: SeDebugPrivilege 1712 1604228P.exe

description	pid	process	target process
PID 1240 set thread context of 1712	1240	1604228P.exe	1604228P.exe

pid	process
1864	schtasks.exe

pid	process
1712	1604228P.exe
1712	1604228P.exe

description	pid	process
Token: SeDebugPrivilege	1712	1604228P.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

1604228P.exe

description	pid	process	target process
PID 1240 wrote to memory of 1864	1240	1604228P.exe	schtasks.exe
PID 1240 wrote to memory of 1864	1240	1604228P.exe	schtasks.exe
PID 1240 wrote to memory of 1864	1240	1604228P.exe	schtasks.exe
PID 1240 wrote to memory of 1864	1240	1604228P.exe	schtasks.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe
PID 1240 wrote to memory of 1712	1240	1604228P.exe	1604228P.exe

outlook_office_path 1 IoCs

Processes:

1604228P.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	1604228P.exe

outlook_win_path 1 IoCs

Processes:

1604228P.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	1604228P.exe

C:\Users\Admin\AppData\Local\Temp\1604228P.exe
"C:\Users\Admin\AppData\Local\Temp\1604228P.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1240

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\letIbjSupJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4319.tmp"
2⤵
- Creates scheduled task(s)
PID:1864

C:\Users\Admin\AppData\Local\Temp\1604228P.exe
"C:\Users\Admin\AppData\Local\Temp\1604228P.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1712

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\tmp4319.tmp
Filesize
1KB

MD5
803f1d875b59d730cb0538dbcf0fe74f

SHA1
3e089499046257ef96cea37dc4b79f891d286459

SHA256
74f82d28d18139ef8708df6d09ffc789497686697c590e77228ceceeac6777e7

SHA512
2d8dbc0e8d5ea259a557b55c4453d41559bee4f4c6dc15c11adb25cced9ab3007f663fe3850b1459d866fc3cbb1e79be26f0b2c9f7f279f2980acc8ff45f5ce0

Download Submit
memory/1240-57-0x0000000005410000-0x00000000054A6000-memory.dmp

Filesize
600KB

Download
memory/1240-55-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

Download
memory/1240-54-0x0000000000E40000-0x0000000000F0E000-memory.dmp

Filesize
824KB

Download
memory/1240-58-0x00000000056E0000-0x0000000005748000-memory.dmp

Filesize
416KB

Download
memory/1240-56-0x0000000000530000-0x0000000000540000-memory.dmp

Filesize
64KB

Download
memory/1712-67-0x000000000045345E-mapping.dmp

Download
memory/1712-61-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-62-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-64-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-65-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-66-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-69-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1712-71-0x0000000000400000-0x0000000000458000-memory.dmp

Filesize
352KB

Download
memory/1864-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads