agenttesla | e29d278e33da6d0decd86fc5d0dc2cbd842a6b55934e4c72d10081ffb97ffbe4

General

Target

VertaxNew/Vertax.exe
Size

4.3MB
MD5

32980bf90249d39c2bc463e6fb5cefa7
SHA1

76e18853ef019cff4b0015d1a6f8c47f3f506eba
SHA256

ed2d5f70ec106e4274bca6a85022a1fffad82c66745bde3c876962c06b75b61b
SHA512

156c9ffce33bf7b858bd85da726aa6ef6d8e9eee51d6c6072777037505619b144e332634158172cf36dcd3fa432fb266c32d1422f698ad1b4a9ca5087ed8c550
SSDEEP

98304:1GZqOKXmi+r5natSim9FH9yMpPsB3j2pmvLC/2CxEchlN36r:1GZqrXX+VneSimDHEMpPSKpmvLI7xEcA

Score

10^/10

agenttesla discovery evasion keylogger spyware stealer themida trojan

Malware Config

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/1272-17-0x0000000006C50000-0x0000000006E64000-memory.dmp	family_agenttesla

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Vertax.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	Vertax.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	Vertax.exe

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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Vertax.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Vertax.exe

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1272-10-0x0000000000500000-0x0000000000E6A000-memory.dmp	themida
behavioral2/memory/1272-11-0x0000000000500000-0x0000000000E6A000-memory.dmp	themida
behavioral2/memory/1272-34-0x0000000000500000-0x0000000000E6A000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Vertax.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Vertax.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	Vertax.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1272	Vertax.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Vertax.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2856	timeout.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	Vertax.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	Vertax.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemVersion	Vertax.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1272	Vertax.exe
1272	Vertax.exe
1272	Vertax.exe
1272	Vertax.exe
1272	Vertax.exe
1272	Vertax.exe
1272	Vertax.exe
1272	Vertax.exe
1272	Vertax.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1272	Vertax.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1272 wrote to memory of 3888	1272	Vertax.exe	94
PID 1272 wrote to memory of 3888	1272	Vertax.exe	94
PID 1272 wrote to memory of 3888	1272	Vertax.exe	94
PID 3888 wrote to memory of 4100	3888	cmd.exe	96
PID 3888 wrote to memory of 4100	3888	cmd.exe	96
PID 3888 wrote to memory of 4100	3888	cmd.exe	96
PID 4100 wrote to memory of 2856	4100	cmd.exe	98
PID 4100 wrote to memory of 2856	4100	cmd.exe	98
PID 4100 wrote to memory of 2856	4100	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\VertaxNew\Vertax.exe
"C:\Users\Admin\AppData\Local\Temp\VertaxNew\Vertax.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1272
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /c start cmd /C "color b && title Error && echo Signature checksum failed. Request was tampered with or session ended most likely. & echo: & echo Response: {"success":false,"message":"Session not found. Use latest code. You can only have app opened 1 at a time."} && timeout /t 5"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3888
- - C:\Windows\SysWOW64\cmd.exe
    cmd /C "color b && title Error && echo Signature checksum failed. Request was tampered with or session ended most likely. & echo: & echo Response: {"success":false,"message":"Session not found. Use latest code. You can only have app opened 1 at a time."} && timeout /t 5"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4100
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

3

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

4

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

3

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1272-0-0x0000000000500000-0x0000000000E6A000-memory.dmp

Filesize
9.4MB

Download
memory/1272-1-0x0000000077600000-0x0000000077601000-memory.dmp

Filesize
4KB

Download
memory/1272-2-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-4-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-3-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-6-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-7-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-5-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-10-0x0000000000500000-0x0000000000E6A000-memory.dmp

Filesize
9.4MB

Download
memory/1272-11-0x0000000000500000-0x0000000000E6A000-memory.dmp

Filesize
9.4MB

Download
memory/1272-12-0x0000000005880000-0x00000000058B6000-memory.dmp

Filesize
216KB

Download
memory/1272-13-0x0000000005CD0000-0x0000000005D36000-memory.dmp

Filesize
408KB

Download
memory/1272-14-0x00000000066A0000-0x0000000006C44000-memory.dmp

Filesize
5.6MB

Download
memory/1272-15-0x00000000061F0000-0x0000000006282000-memory.dmp

Filesize
584KB

Download
memory/1272-16-0x00000000062A0000-0x00000000062AA000-memory.dmp

Filesize
40KB

Download
memory/1272-17-0x0000000006C50000-0x0000000006E64000-memory.dmp

Filesize
2.1MB

Download
memory/1272-18-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-19-0x0000000007D20000-0x0000000007D32000-memory.dmp

Filesize
72KB

Download
memory/1272-20-0x0000000000500000-0x0000000000E6A000-memory.dmp

Filesize
9.4MB

Download
memory/1272-21-0x0000000008300000-0x000000000833C000-memory.dmp

Filesize
240KB

Download
memory/1272-22-0x0000000077600000-0x0000000077601000-memory.dmp

Filesize
4KB

Download
memory/1272-23-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-24-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-25-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-26-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-28-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download
memory/1272-34-0x0000000000500000-0x0000000000E6A000-memory.dmp

Filesize
9.4MB

Download
memory/1272-35-0x00000000775E0000-0x00000000776D0000-memory.dmp

Filesize
960KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads