agenttesla | f150b76e622e7da135e3d47a20c424aa20a6efeb839b15d301c17233bdcbc9f4

General

Target
Order C0nfirmation.gz.exe
Size 1.1MB
Sample200819-paa3gzlr9x
SHA256 f150b76e622e7da135e3d47a20c424aa20a6efeb839b15d301c17233bdcbc9f4
MD5 afc62aeaf38dc5042b5ba0fdb5f68b32
SHA1 288230f946bcbdb8a28d2ca74ad834f078e0f007
SHA512 aefa26c5d1838224737813df984ab019a7c83dd5d4948c391149eefe35116008ae3d09a36f30551eecf1998fe982162627c12c65db7ad93c357ce567ed692e9a
MD5 SHA1 SHA512

Score

10^/10

keylogger stealer evasion spyware trojan agenttesla

Malware Config

Extracted

Credentials

Protocol
smtp
Host
smtp.shirdilog.com
Port
587
Username
[email protected]
Password
SL094521

Signatures

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

AgentTesla Payload 3 IoCs

keylogger stealer

resource	yara_rule
behavioral2/memory/3496-13-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/3496-13-0x0000000000400000-0x0000000000466000-memory.dmp	agent_tesla
behavioral2/memory/3496-14-0x00000000004612BE-mapping.dmp	agent_tesla

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\VideoBiosVersion	Order C0nfirmation.gz.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Order C0nfirmation.gz.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	Order C0nfirmation.gz.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	Order C0nfirmation.gz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3740 set thread context of 3496	3740	Order C0nfirmation.gz.exe	76

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
3452	schtasks.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3092	REG.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3740	Order C0nfirmation.gz.exe
3740	Order C0nfirmation.gz.exe
3740	Order C0nfirmation.gz.exe
3740	Order C0nfirmation.gz.exe
3740	Order C0nfirmation.gz.exe
3740	Order C0nfirmation.gz.exe
3496	Order C0nfirmation.gz.exe
3496	Order C0nfirmation.gz.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3740	Order C0nfirmation.gz.exe
Token: SeDebugPrivilege	3496	Order C0nfirmation.gz.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3496	Order C0nfirmation.gz.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3740 wrote to memory of 3452	3740	Order C0nfirmation.gz.exe	73
PID 3740 wrote to memory of 3452	3740	Order C0nfirmation.gz.exe	73
PID 3740 wrote to memory of 3452	3740	Order C0nfirmation.gz.exe	73
PID 3740 wrote to memory of 2412	3740	Order C0nfirmation.gz.exe	75
PID 3740 wrote to memory of 2412	3740	Order C0nfirmation.gz.exe	75
PID 3740 wrote to memory of 2412	3740	Order C0nfirmation.gz.exe	75
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3740 wrote to memory of 3496	3740	Order C0nfirmation.gz.exe	76
PID 3496 wrote to memory of 3092	3496	Order C0nfirmation.gz.exe	77
PID 3496 wrote to memory of 3092	3496	Order C0nfirmation.gz.exe	77
PID 3496 wrote to memory of 3092	3496	Order C0nfirmation.gz.exe	77

C:\Users\Admin\AppData\Local\Temp\Order C0nfirmation.gz.exe
"C:\Users\Admin\AppData\Local\Temp\Order C0nfirmation.gz.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:3740
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dHLWSIjPV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1B1F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3452
- C:\Users\Admin\AppData\Local\Temp\Order C0nfirmation.gz.exe
  "{path}"
  2⤵
  PID:2412
- C:\Users\Admin\AppData\Local\Temp\Order C0nfirmation.gz.exe
  "{path}"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3496
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer / v NoRun / t REG_DWORD / d 1 / f
    3⤵
    - Modifies registry key
    PID:3092