agenttesla | 6fe4ed3b3c7cc3cfa8ef38e74a7a2edac816629d279ea49f26cbbf9c0addeda3

Analysis

max time kernel
149s
max time network
151s
platform
windows10_x64
resource
win10-en-20210920
submitted
27/09/2021, 16:55

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General

Target
c0zG2sQGfpll1oV.exe
Size 646KB
Sample210927-ve58qshec8
SHA256 6fe4ed3b3c7cc3cfa8ef38e74a7a2edac816629d279ea49f26cbbf9c0addeda3
MD5 23a0c5e81f2fa25123a153135c3cd013
SHA1 782510ca72214514a354165759db3dc6ee948670
SHA512 bcc2da8acde210a0e838f932330061049a6fc966e09977e877bdd0e196cc6f7a14fe57a1c41b60b873a97794c80727dd20bb3abbfbc343e4b064f597ce44dd37
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.strematec-usinagem.com.br
Port
587
Username
[email protected]
Password
Crso@2361

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral2/memory/3484-126-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral2/memory/3484-127-0x000000000043775E-mapping.dmp	family_agenttesla
behavioral2/memory/3484-133-0x00000000052B0000-0x00000000057AE000-memory.dmp	family_agenttesla
behavioral2/memory/3484-138-0x00000000052B0000-0x00000000057AE000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	c0zG2sQGfpll1oV.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2168 set thread context of 3484	2168	c0zG2sQGfpll1oV.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
2872	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2168	c0zG2sQGfpll1oV.exe
2168	c0zG2sQGfpll1oV.exe
3484	c0zG2sQGfpll1oV.exe
3484	c0zG2sQGfpll1oV.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2168	c0zG2sQGfpll1oV.exe
Token: SeDebugPrivilege	3484	c0zG2sQGfpll1oV.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3484	c0zG2sQGfpll1oV.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 2872	2168	c0zG2sQGfpll1oV.exe	70
PID 2168 wrote to memory of 2872	2168	c0zG2sQGfpll1oV.exe	70
PID 2168 wrote to memory of 2872	2168	c0zG2sQGfpll1oV.exe	70
PID 2168 wrote to memory of 1976	2168	c0zG2sQGfpll1oV.exe	71
PID 2168 wrote to memory of 1976	2168	c0zG2sQGfpll1oV.exe	71
PID 2168 wrote to memory of 1976	2168	c0zG2sQGfpll1oV.exe	71
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73
PID 2168 wrote to memory of 3484	2168	c0zG2sQGfpll1oV.exe	73

C:\Users\Admin\AppData\Local\Temp\c0zG2sQGfpll1oV.exe
"C:\Users\Admin\AppData\Local\Temp\c0zG2sQGfpll1oV.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2168
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CWlKcNliw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp16F4.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2872
- C:\Users\Admin\AppData\Local\Temp\c0zG2sQGfpll1oV.exe
  "C:\Users\Admin\AppData\Local\Temp\c0zG2sQGfpll1oV.exe"
  2⤵
  PID:1976
- C:\Users\Admin\AppData\Local\Temp\c0zG2sQGfpll1oV.exe
  "C:\Users\Admin\AppData\Local\Temp\c0zG2sQGfpll1oV.exe"
  2⤵
  - Drops file in Drivers directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3484

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2168-120-0x0000000008C50000-0x0000000008C51000-memory.dmp

Download

memory/2168-117-0x0000000005A90000-0x0000000005A91000-memory.dmp

Download

memory/2168-119-0x00000000057A0000-0x00000000057A1000-memory.dmp

Download

memory/2168-115-0x0000000000C00000-0x0000000000C01000-memory.dmp

Download

memory/2168-121-0x0000000005590000-0x0000000005A8E000-memory.dmp

Download

memory/2168-122-0x0000000005860000-0x0000000005867000-memory.dmp

Download

memory/2168-118-0x0000000005630000-0x0000000005631000-memory.dmp

Download

memory/2168-123-0x0000000009050000-0x00000000090B5000-memory.dmp

Download

memory/2168-124-0x00000000090C0000-0x00000000090F9000-memory.dmp

Download

memory/3484-126-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/3484-133-0x00000000052B0000-0x00000000057AE000-memory.dmp

Download

memory/3484-134-0x0000000005460000-0x0000000005461000-memory.dmp

Download

memory/3484-135-0x0000000006010000-0x0000000006011000-memory.dmp

Download

memory/3484-138-0x00000000052B0000-0x00000000057AE000-memory.dmp

Download