agenttesla | be905b9aac897739d22c1078e60be1111efc7a9ec25e205d664e03a59730dbea

General

Target

Purchase-Order.exe
Size

1.1MB
MD5

4f23660dde9df05e7429c970ce9027cc
SHA1

d57c4ca2e01422400df57f2e4610dc9ebdcde4f0
SHA256

be905b9aac897739d22c1078e60be1111efc7a9ec25e205d664e03a59730dbea
SHA512

69cf95ac1c0a7a78caa26eefec4f5da1e6117284a1c0585341381a56076e7b235e73b5718f9e119767e71f2e10713a7637866b0ddf6ac3b89d5642b4d1ed12da

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.pka.co.in
Port:
587
Username:
[email protected]
Password:
a$yQ&h1Yd6&

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1900-4-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1900-5-0x000000000044771E-mapping.dmp	family_agenttesla
behavioral1/memory/1900-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1900-7-0x0000000000400000-0x000000000044C000-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

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	Purchase-Order.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	Purchase-Order.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 672 set thread context of 1900	672	Purchase-Order.exe	27

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

pid	Process
1868	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
672	Purchase-Order.exe
1900	Purchase-Order.exe
1900	Purchase-Order.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	672	Purchase-Order.exe
Token: SeDebugPrivilege	1900	Purchase-Order.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1900	Purchase-Order.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 672 wrote to memory of 1868	672	Purchase-Order.exe	25
PID 672 wrote to memory of 1868	672	Purchase-Order.exe	25
PID 672 wrote to memory of 1868	672	Purchase-Order.exe	25
PID 672 wrote to memory of 1868	672	Purchase-Order.exe	25
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27
PID 672 wrote to memory of 1900	672	Purchase-Order.exe	27

C:\Users\Admin\AppData\Local\Temp\Purchase-Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase-Order.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:672
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JjekBOvmAcHATs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD596.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1868
- C:\Users\Admin\AppData\Local\Temp\Purchase-Order.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1900

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

memory/1900-4-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1900-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1900-7-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads