agenttesla | 46dd53f3096877a4cad89b77f2d23018d8bc5887a9c0d699cb43ffe9d0b5e29d

General

Target

documentos Fedex.js
Size

1KB
MD5

42a82a614937b74596344fa2a1a7c737
SHA1

c13081e8eba34ca1619f7e8a11e2e8677878d292
SHA256

46dd53f3096877a4cad89b77f2d23018d8bc5887a9c0d699cb43ffe9d0b5e29d
SHA512

a9841b2fb08bc50a6476d366d5f8a44e1dec00d541f81e2a5829a09221313efe535470d06b0c5aa5c4d3beb3c4c18a72f96cfab329e88e66b39ce416ad7bc601

Score

10^/10

agenttesla collection keylogger spyware stealer suricata trojan

Malware Config

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata

AgentTesla Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4076-122-0x00000000020D0000-0x000000000211E000-memory.dmp	family_agenttesla
behavioral2/memory/4076-124-0x0000000004AB0000-0x0000000004AFE000-memory.dmp	family_agenttesla

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	3620	wscript.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
4024	rt.exe
4076	rt.exe

Loads dropped DLL 1 IoCs

pid	Process
4024	rt.exe

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-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rt.exe
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rt.exe
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4024 set thread context of 4076	4024	rt.exe	69

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

NSIS installer 6 IoCs

installer

resource	yara_rule
behavioral2/files/0x000500000001ab0e-116.dat	nsis_installer_1
behavioral2/files/0x000500000001ab0e-116.dat	nsis_installer_2
behavioral2/files/0x000500000001ab0e-117.dat	nsis_installer_1
behavioral2/files/0x000500000001ab0e-117.dat	nsis_installer_2
behavioral2/files/0x000500000001ab0e-121.dat	nsis_installer_1
behavioral2/files/0x000500000001ab0e-121.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4076	rt.exe
4076	rt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4076	rt.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3620 wrote to memory of 4024	3620	wscript.exe	68
PID 3620 wrote to memory of 4024	3620	wscript.exe	68
PID 3620 wrote to memory of 4024	3620	wscript.exe	68
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69
PID 4024 wrote to memory of 4076	4024	rt.exe	69

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rt.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	rt.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\documentos Fedex.js"
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3620
- C:\Users\Admin\AppData\Local\Temp\rt.exe
  "C:\Users\Admin\AppData\Local\Temp\rt.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:4024
- - C:\Users\Admin\AppData\Local\Temp\rt.exe
    "C:\Users\Admin\AppData\Local\Temp\rt.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4076

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

2

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4076-125-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4076-127-0x0000000004B12000-0x0000000004B13000-memory.dmp

Filesize
4KB

Download
memory/4076-122-0x00000000020D0000-0x000000000211E000-memory.dmp

Filesize
312KB

Download
memory/4076-123-0x0000000004B20000-0x000000000501E000-memory.dmp

Filesize
5.0MB

Download
memory/4076-124-0x0000000004AB0000-0x0000000004AFE000-memory.dmp

Filesize
312KB

Download
memory/4076-119-0x0000000000400000-0x0000000000446000-memory.dmp

Filesize
280KB

Download
memory/4076-126-0x0000000004B10000-0x0000000004B11000-memory.dmp

Filesize
4KB

Download
memory/4076-128-0x0000000004B13000-0x0000000004B14000-memory.dmp

Filesize
4KB

Download
memory/4076-129-0x00000000050E0000-0x000000000517C000-memory.dmp

Filesize
624KB

Download
memory/4076-130-0x0000000004B14000-0x0000000004B16000-memory.dmp

Filesize
8KB

Download
memory/4076-131-0x0000000005790000-0x00000000057A8000-memory.dmp

Filesize
96KB

Download
memory/4076-132-0x00000000057D0000-0x0000000005836000-memory.dmp

Filesize
408KB

Download
memory/4076-133-0x0000000005C60000-0x0000000005CF2000-memory.dmp

Filesize
584KB

Download
memory/4076-134-0x0000000005AB0000-0x0000000005ABA000-memory.dmp

Filesize
40KB

Download

Analysis

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