agenttesla | f936f3df58fe783f2b89a3e836e77727399c86fce62541e46ece8ad3039645b8

General

Target

comprobante.pdf.exe
Size

1.1MB
MD5

36caa90ad7983f4d019e45ffe4563f96
SHA1

375af942d0e826b9bdd8213284790f3f88695f6e
SHA256

460466b4bd3a9389f45e255c2dc48bc49f59cea7ed45f10f1b052442bb8e8175
SHA512

ffd0924b4eebb237f25a7421f7f33176a96d51371b710e169255553691efda93648b535b68d273fe83a43364b33d575bc3af789de0db6aa80d72ebe4d6f1febc
SSDEEP

12288:cne8ES7hCJH213UvLYu6fMxnbsEBEXPCtnJUcVpt34gv0ZGmgkddP63FRPRVmn:IEzJ64k9ExbsEBE6tJUcVpt34I01gkd

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
serv-10708.handsonwebhosting.com
Port:
587
Username:
[email protected]
Password:
icui4cu2@@

Signatures

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

AgentTesla payload 5 IoCs

resource	yara_rule
behavioral1/memory/2820-16-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2820-18-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2820-14-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2820-11-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/2820-10-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	comprobante.pdf.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
T1552.001
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
T1552.001
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
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	comprobante.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	comprobante.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	comprobante.pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1248 set thread context of 2820	1248	comprobante.pdf.exe	28

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2820	comprobante.pdf.exe
2820	comprobante.pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2820	comprobante.pdf.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28
PID 1248 wrote to memory of 2820	1248	comprobante.pdf.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	comprobante.pdf.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3601492379-692465709-652514833-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	comprobante.pdf.exe

C:\Users\Admin\AppData\Local\Temp\comprobante.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\comprobante.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\AppData\Local\Temp\comprobante.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\comprobante.pdf.exe"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1248-0-0x0000000000880000-0x0000000000996000-memory.dmp

Filesize
1.1MB

Download
memory/1248-1-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1248-2-0x0000000004DC0000-0x0000000004E00000-memory.dmp

Filesize
256KB

Download
memory/1248-3-0x0000000000600000-0x000000000061E000-memory.dmp

Filesize
120KB

Download
memory/1248-4-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/1248-5-0x0000000004DC0000-0x0000000004E00000-memory.dmp

Filesize
256KB

Download
memory/1248-6-0x00000000002C0000-0x0000000000356000-memory.dmp

Filesize
600KB

Download
memory/1248-7-0x0000000000790000-0x00000000007CC000-memory.dmp

Filesize
240KB

Download
memory/1248-20-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-21-0x00000000049B0000-0x00000000049F0000-memory.dmp

Filesize
256KB

Download
memory/2820-19-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-16-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2820-18-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2820-14-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2820-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-11-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2820-10-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2820-9-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2820-8-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2820-22-0x0000000074A40000-0x000000007512E000-memory.dmp

Filesize
6.9MB

Download
memory/2820-23-0x00000000049B0000-0x00000000049F0000-memory.dmp

Filesize
256KB

Download

Analysis

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