agenttesla | c20cdceb9065b28f9e80f21bf214d1eac74d40960f0bc9e4226d55e0ef9dfe61

General

Target
c0d592247c27dadebc457f87c3aa2cf2.exe
Size 468KB
Sample201117-k11f5eey26
SHA256 c20cdceb9065b28f9e80f21bf214d1eac74d40960f0bc9e4226d55e0ef9dfe61
MD5 c0d592247c27dadebc457f87c3aa2cf2
SHA1 c58c7085b57a97aacead4eee552c5c768476eb30
SHA512 7d4ebaf54b7361d0f97e4c424ba788c4e334158de3a5601ecca3ccdf493f3a00cf4d535854611d9c16af8b720e7fa0800642cf3427c465cc74352600ce23025b
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.outlook.com
Port
587
Username
[email protected]
Password
Account_Statement222

Signatures

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

AgentTesla Payload 2 IoCs

resource	yara_rule
behavioral2/memory/652-3-0x000000000043749E-mapping.dmp	family_agenttesla
behavioral2/memory/652-2-0x0000000000400000-0x000000000043C000-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	c0d592247c27dadebc457f87c3aa2cf2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c0d592247c27dadebc457f87c3aa2cf2.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\POP = "C:\\Users\\Admin\\AppData\\Roaming\\POP\\POP.exe"	c0d592247c27dadebc457f87c3aa2cf2.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
16	api.ipify.org
15	api.ipify.org

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	c0d592247c27dadebc457f87c3aa2cf2.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	c0d592247c27dadebc457f87c3aa2cf2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81

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
580	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4800	c0d592247c27dadebc457f87c3aa2cf2.exe
652	c0d592247c27dadebc457f87c3aa2cf2.exe
652	c0d592247c27dadebc457f87c3aa2cf2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4800	c0d592247c27dadebc457f87c3aa2cf2.exe
Token: SeDebugPrivilege	652	c0d592247c27dadebc457f87c3aa2cf2.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4800 wrote to memory of 580	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	79
PID 4800 wrote to memory of 580	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	79
PID 4800 wrote to memory of 580	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	79
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81
PID 4800 wrote to memory of 652	4800	c0d592247c27dadebc457f87c3aa2cf2.exe	81

C:\Users\Admin\AppData\Local\Temp\c0d592247c27dadebc457f87c3aa2cf2.exe
"C:\Users\Admin\AppData\Local\Temp\c0d592247c27dadebc457f87c3aa2cf2.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:4800
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CwufQe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp43FF.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:580
- C:\Users\Admin\AppData\Local\Temp\c0d592247c27dadebc457f87c3aa2cf2.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:652