agenttesla | c8e57eaa8b0fcdfa8cd3db86591975ed151c5e1751997a94fb0d9dddf62aecba

General

Target
DHL_express_package.exe
Size 591KB
Sample201109-d49c9hyge2
SHA256 c8e57eaa8b0fcdfa8cd3db86591975ed151c5e1751997a94fb0d9dddf62aecba
MD5 16c3bb1063950e08cad8d54aafa5dac1
SHA1 e9a9db62e38b2c241ec73cdeb8cb77c17e0188f1
SHA512 ba2c09252a9d01344256284bae7f01160ad9993845ea0c338113969ff7b3666a76488830d8cafaaa0cb991e8b478bb13c07936dae8c0d308e2969df62a517b2e
MD5 SHA1 SHA512

Score

10^/10

Credentials

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/1912-14-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/1912-15-0x0000000000447C3E-mapping.dmp	family_agenttesla

rezer0 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

resource	yara_rule
behavioral2/memory/4768-11-0x00000000079E0000-0x0000000007A2E000-memory.dmp	rezer0

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

Registry Run Keys / Startup Folder

Modify Registry

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4768 set thread context of 1912	4768	DHL_express_package.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.

Scheduled Task

pid	Process
4068	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1912	DHL_express_package.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4768	DHL_express_package.exe
Token: SeDebugPrivilege	1912	DHL_express_package.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4768 wrote to memory of 4068	4768	DHL_express_package.exe	79
PID 4768 wrote to memory of 4068	4768	DHL_express_package.exe	79
PID 4768 wrote to memory of 4068	4768	DHL_express_package.exe	79
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81
PID 4768 wrote to memory of 1912	4768	DHL_express_package.exe	81

C:\Users\Admin\AppData\Local\Temp\DHL_express_package.exe
"C:\Users\Admin\AppData\Local\Temp\DHL_express_package.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4768
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ihfdEeRPG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB367.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4068
- C:\Users\Admin\AppData\Local\Temp\DHL_express_package.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  PID:1912