agenttesla | 3982f95e9287b4848e04b2ae0e9b329720842a5cb221dff83f1ed48e2f7ad6fe

General

Target
PO EM212843_pdf.exe
Size 678KB
Sample220511-pbe99agde9
SHA256 3982f95e9287b4848e04b2ae0e9b329720842a5cb221dff83f1ed48e2f7ad6fe
MD5 ac0d016f7b0142368d17f980947a9b92
SHA1 49e36b3dbdeb3cd4a130dcbe7e96b262cfac661b
SHA512 c359e0b25d0e9f8b115239e24a660333d81397f5246f2619a2dbf67eb7e84446d97a2274041684e40a0f49f00e3d8431a7fb64cd60d57a24bc4a2ead16eddd03
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.valtronics-ae.com
Port
587
Username
[email protected]
Password
YTMIlIR0

Signatures

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

AgentTesla Payload 6 IoCs

resource	yara_rule
behavioral1/memory/896-64-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/896-65-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/896-66-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/896-67-0x0000000000436C3E-mapping.dmp	family_agenttesla
behavioral1/memory/896-71-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/896-69-0x0000000000400000-0x000000000043C000-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	PO EM212843_pdf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	PO EM212843_pdf.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	PO EM212843_pdf.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	PO EM212843_pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 748 set thread context of 896	748	PO EM212843_pdf.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
896	PO EM212843_pdf.exe
896	PO EM212843_pdf.exe
2020	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	896	PO EM212843_pdf.exe
Token: SeDebugPrivilege	2020	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 2020	748	PO EM212843_pdf.exe	28
PID 748 wrote to memory of 2020	748	PO EM212843_pdf.exe	28
PID 748 wrote to memory of 2020	748	PO EM212843_pdf.exe	28
PID 748 wrote to memory of 2020	748	PO EM212843_pdf.exe	28
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31
PID 748 wrote to memory of 896	748	PO EM212843_pdf.exe	31

C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe
"C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:748
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2020
- C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\PO EM212843_pdf.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/748-60-0x0000000005A30000-0x0000000005A76000-memory.dmp

Download

memory/748-55-0x00000000763E1000-0x00000000763E3000-memory.dmp

Download

memory/748-56-0x00000000002B0000-0x00000000002B8000-memory.dmp

Download

memory/748-57-0x00000000051C0000-0x0000000005254000-memory.dmp

Download

memory/748-54-0x00000000008A0000-0x000000000094E000-memory.dmp

Download

memory/896-61-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/896-62-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/896-64-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/896-65-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/896-66-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/896-71-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/896-69-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/2020-72-0x000000006D1B0000-0x000000006D75B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads