agenttesla | dc6ec612a3647aa1c29469710570837f1bab7e1e5e0f3fd0f6dd0a261c4c331a

Analysis

max time kernel
123s
max time network
122s
platform
windows10_x64
resource
win10-en-20210920
submitted
19/10/2021, 15:54

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
Purchase Order.exe
Size 1.2MB
Sample211019-tb7rqagbd2
SHA256 dc6ec612a3647aa1c29469710570837f1bab7e1e5e0f3fd0f6dd0a261c4c331a
MD5 25187e1348ce3471f3ac3b620edb3a63
SHA1 2193f4d5aa0a9e00dbbb8bdf2d40176adb5070c6
SHA512 7ee5f366b82bda3275fef09f254fab380c2cfef6c545fac5667b54b54d767f5a33c2bb0cf7a0ba6e2296a6d3381645511734f8bfa193edcaa21f8d0e23ef22b2
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.vivaldi.net
Port
587
Username
[email protected]
Password
Password1000

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/604-128-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/604-129-0x00000000004376CE-mapping.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Purchase Order.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

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 stealer

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 stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

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-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\tKZVPq = "C:\\Users\\Admin\\AppData\\Roaming\\tKZVPq\\tKZVPq.exe"	Purchase Order.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2180 set thread context of 604	2180	Purchase Order.exe	73

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
3092	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
604	Purchase Order.exe
604	Purchase Order.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	604	Purchase Order.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2180 wrote to memory of 3092	2180	Purchase Order.exe	71
PID 2180 wrote to memory of 3092	2180	Purchase Order.exe	71
PID 2180 wrote to memory of 3092	2180	Purchase Order.exe	71
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73
PID 2180 wrote to memory of 604	2180	Purchase Order.exe	73

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Purchase Order.exe

C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TYXWjGGnfmxrXp" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1FF7.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3092
- C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/604-140-0x0000000001051000-0x0000000001052000-memory.dmp

Download

memory/604-137-0x0000000005C70000-0x0000000005C71000-memory.dmp

Download

memory/604-136-0x0000000005BE0000-0x0000000005BE1000-memory.dmp

Download

memory/604-135-0x0000000001050000-0x0000000001051000-memory.dmp

Download

memory/604-128-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/2180-120-0x00000000052D0000-0x00000000052D1000-memory.dmp

Download

memory/2180-125-0x000000000E070000-0x000000000E0A8000-memory.dmp

Download

memory/2180-124-0x000000000CEF0000-0x000000000CF70000-memory.dmp

Download

memory/2180-123-0x0000000004C60000-0x0000000004C6E000-memory.dmp

Download

memory/2180-122-0x0000000005330000-0x000000000582E000-memory.dmp

Download

memory/2180-121-0x0000000005590000-0x0000000005591000-memory.dmp

Download

memory/2180-115-0x0000000000900000-0x0000000000901000-memory.dmp

Download

memory/2180-119-0x00000000053D0000-0x00000000053D1000-memory.dmp

Download

memory/2180-118-0x0000000005830000-0x0000000005831000-memory.dmp

Download

memory/2180-117-0x0000000005220000-0x0000000005221000-memory.dmp

Download