agenttesla | dd780d46887a6d0abe23b50529aab25de2a5ed452ae9feba3dfbe3e6cdff7c22

General

Target
XOBRqBiDeTSwhKc.exe
Size 457KB
Sample201109-cjvepspd66
SHA256 dd780d46887a6d0abe23b50529aab25de2a5ed452ae9feba3dfbe3e6cdff7c22
MD5 947ffd5f14cefaa00ff458a848e20243
SHA1 e875b90bfe62cdd6f41e1768c310f3e520657cd9
SHA512 20986e1773caf900671906036afe9c9437d33742f86584ede8a5704efcbd22c452f5752fc631361fbe33a27595879fb981d3a85c820d643a2bf6350d53959435
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger rezer0 spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol
smtp
Host
mail.healthplusuae.com
Port
587
Username
[email protected]
Password
basheer7648903

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.healthplusuae.com
Port
587
Username
[email protected]
Password
basheer7648903

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/188-12-0x0000000000400000-0x0000000000450000-memory.dmp	family_agenttesla
behavioral2/memory/188-13-0x000000000044A7FE-mapping.dmp	family_agenttesla

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

rezer0 1 IoCs

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

rezer0

resource	yara_rule
behavioral2/memory/636-7-0x00000000085F0000-0x0000000008641000-memory.dmp	rezer0

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	XOBRqBiDeTSwhKc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	XOBRqBiDeTSwhKc.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	XOBRqBiDeTSwhKc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	XOBRqBiDeTSwhKc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 636 set thread context of 188	636	XOBRqBiDeTSwhKc.exe	77

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
3172	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
636	XOBRqBiDeTSwhKc.exe
188	XOBRqBiDeTSwhKc.exe
188	XOBRqBiDeTSwhKc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	XOBRqBiDeTSwhKc.exe
Token: SeDebugPrivilege	188	XOBRqBiDeTSwhKc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
188	XOBRqBiDeTSwhKc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 3172	636	XOBRqBiDeTSwhKc.exe	75
PID 636 wrote to memory of 3172	636	XOBRqBiDeTSwhKc.exe	75
PID 636 wrote to memory of 3172	636	XOBRqBiDeTSwhKc.exe	75
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 636 wrote to memory of 188	636	XOBRqBiDeTSwhKc.exe	77
PID 188 wrote to memory of 860	188	XOBRqBiDeTSwhKc.exe	81
PID 188 wrote to memory of 860	188	XOBRqBiDeTSwhKc.exe	81
PID 188 wrote to memory of 860	188	XOBRqBiDeTSwhKc.exe	81

C:\Users\Admin\AppData\Local\Temp\XOBRqBiDeTSwhKc.exe
"C:\Users\Admin\AppData\Local\Temp\XOBRqBiDeTSwhKc.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:636
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rKLoYWL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6DE2.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3172
- C:\Users\Admin\AppData\Local\Temp\XOBRqBiDeTSwhKc.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:188
- - C:\Windows\SysWOW64\netsh.exe
    "netsh" wlan show profile
    3⤵
    PID:860