agenttesla | 5e4ad329433655e942706e02361b10c21caed15d46cf924a7ebe153932f105ae

Analysis

max time kernel
496s
max time network
500s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
28-04-2022 07:35

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General

Target

tesla.exe
Size

1.0MB
MD5

bafa9bd077c451f845e0ecca1010607d
SHA1

e3c6c99c6680a3ef5a25e511b97dfa1d6b91b5bc
SHA256

ef19393cf49f6fc5899b0fd1b29530e49f35776341b03ef6b0b0a5e0cfce3418
SHA512

f443d5775a34c40983451b8143cfdf82a5fc049e889f5d3885be69818dbc9a20fe1a69cc06eaa24bceb7761fddd95ff39be75fa08d78231a96bf5bdc6bcf730f

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.buynsell.com.pk
Port:
587
Username:
[email protected]
Password:
YNTWThjj19791206
Email To:
[email protected]

Signatures

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

AgentTesla Payload 1 IoCs

Processes:

resource	yara_rule
behavioral18/memory/2620-143-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

tesla.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation tesla.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	tesla.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

tesla.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tesla.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tesla.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tesla.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tesla.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NewApp = "C:\\Users\\Admin\\AppData\\Roaming\\NewApp\\NewApp.exe"	tesla.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

tesla.exe

description pid process target process

PID 2728 set thread context of 2620 2728 tesla.exe tesla.exe
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

Processes:

schtasks.exe

pid process

4960 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

tesla.exetesla.exe

pid process

2728 tesla.exe
2728 tesla.exe
2620 tesla.exe
2620 tesla.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tesla.exetesla.exe

description pid process

Token: SeDebugPrivilege 2728 tesla.exe
Token: SeDebugPrivilege 2620 tesla.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

tesla.exe

pid process

2620 tesla.exe

description	pid	process	target process
PID 2728 set thread context of 2620	2728	tesla.exe	tesla.exe

pid	process
4960	schtasks.exe

pid	process
2728	tesla.exe
2728	tesla.exe
2620	tesla.exe
2620	tesla.exe

description	pid	process
Token: SeDebugPrivilege	2728	tesla.exe
Token: SeDebugPrivilege	2620	tesla.exe

pid	process
2620	tesla.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

tesla.exe

description	pid	process	target process
PID 2728 wrote to memory of 4960	2728	tesla.exe	schtasks.exe
PID 2728 wrote to memory of 4960	2728	tesla.exe	schtasks.exe
PID 2728 wrote to memory of 4960	2728	tesla.exe	schtasks.exe
PID 2728 wrote to memory of 2480	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2480	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2480	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe
PID 2728 wrote to memory of 2620	2728	tesla.exe	tesla.exe

outlook_office_path 1 IoCs

Processes:

tesla.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tesla.exe

outlook_win_path 1 IoCs

Processes:

tesla.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tesla.exe

C:\Users\Admin\AppData\Local\Temp\tesla.exe
"C:\Users\Admin\AppData\Local\Temp\tesla.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\OVsjEvRP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp683F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4960
- C:\Users\Admin\AppData\Local\Temp\tesla.exe
  "C:\Users\Admin\AppData\Local\Temp\tesla.exe"
  2⤵
  PID:2480
- C:\Users\Admin\AppData\Local\Temp\tesla.exe
  "C:\Users\Admin\AppData\Local\Temp\tesla.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2620

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp683F.tmp

Filesize
1KB

MD5
6d3111c84eb3a1fbd7672315511487ef

SHA1
bbe6bed0047fc19419abd4c0c44dfa9393426143

SHA256
0f24445a3c1534bf2fb5a2f3c2def203580c5bdd6ec01c1b4a8d8a8abced5d73

SHA512
6f4a6ec10dbf8a9d4f4343c56ce14f1b782b73a26edb412fd884740a7c995c7eb8ef58f59f0073cb9970ec945af5f4c6af4c9231a318309199af4ea8d4316146

Download Submit
memory/2480-141-0x0000000000000000-mapping.dmp

Download
memory/2620-145-0x0000000006340000-0x0000000006390000-memory.dmp

Filesize
320KB

Download
memory/2620-144-0x0000000005D30000-0x0000000005D96000-memory.dmp

Filesize
408KB

Download
memory/2620-143-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2620-142-0x0000000000000000-mapping.dmp

Download
memory/2728-136-0x000000000A2F0000-0x000000000A382000-memory.dmp

Filesize
584KB

Download
memory/2728-138-0x000000000A580000-0x000000000A5D6000-memory.dmp

Filesize
344KB

Download
memory/2728-137-0x0000000004880000-0x000000000488A000-memory.dmp

Filesize
40KB

Download
memory/2728-133-0x00000000002A0000-0x00000000003B2000-memory.dmp

Filesize
1.1MB

Download
memory/2728-135-0x000000000A9E0000-0x000000000AF84000-memory.dmp

Filesize
5.6MB

Download
memory/2728-134-0x000000000A390000-0x000000000A42C000-memory.dmp

Filesize
624KB

Download
memory/4960-139-0x0000000000000000-mapping.dmp

Download