agenttesla | e315fa4ed12b9b0f07f7bbd5096a9e31f39ae175fed2981e7bd1eaac28e96bad

General

Target

55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe
Size

544KB
MD5

b97034ee9c19f446a445db253dc70134
SHA1

32eb65616151e4caba773ed639bf190bc3b24bc5
SHA256

55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d
SHA512

632db0d38d66953aa79416f0d79a1b0035563e1d6677aabbe8c570671d8982d3d64c7867b0db7c0d92d6771a6683432c58bd56e903e747511f87f0ef17bead5a
SSDEEP

12288:BwxNs66l2XUDdky8zshY/wY8zQZdgRA27TTTSIU5ynM5fuvR:2eKXUDmyUP4YPZmPTTLUIM5GvR

Score

10^/10

agenttesla redline collection infostealer keylogger persistence spyware stealer trojan

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.nereus.cl
Port:
587
Username:
[email protected]
Password:
0uF)jGjrEGiu

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.nereus.cl
Port:
587
Username:
[email protected]
Password:
0uF)jGjrEGiu
Email To:
[email protected]

Signatures

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

Detects Redline Stealer samples 2 IoCs

This rule detects the presence of Redline Stealer samples based on their unique strings.

stealer

resource	yara_rule
behavioral2/memory/1020-143-0x0000000004DB0000-0x0000000004E16000-memory.dmp	redline_stealer
behavioral2/memory/1020-148-0x0000000006B70000-0x0000000006D32000-memory.dmp	redline_stealer

RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline
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-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.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-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe"	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
38	api.ipify.org
39	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3936 set thread context of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1020	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1020	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93
PID 3936 wrote to memory of 1020	3936	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe

C:\Users\Admin\AppData\Local\Temp\55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe
"C:\Users\Admin\AppData\Local\Temp\55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Users\Admin\AppData\Local\Temp\55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe
  "C:\Users\Admin\AppData\Local\Temp\55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\55618071bd4c2f58f8144be8ae2ef40df68f07d7a6cfc5b0e2db1b7f6a57846d.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/1020-140-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1020-155-0x0000000004F00000-0x0000000004F10000-memory.dmp

Filesize
64KB

Download
memory/1020-148-0x0000000006B70000-0x0000000006D32000-memory.dmp

Filesize
1.8MB

Download
memory/1020-147-0x0000000006950000-0x00000000069A0000-memory.dmp

Filesize
320KB

Download
memory/1020-144-0x0000000004F00000-0x0000000004F10000-memory.dmp

Filesize
64KB

Download
memory/1020-143-0x0000000004DB0000-0x0000000004E16000-memory.dmp

Filesize
408KB

Download
memory/3936-136-0x0000000004F70000-0x0000000004F7A000-memory.dmp

Filesize
40KB

Download
memory/3936-139-0x0000000006D00000-0x0000000006D9C000-memory.dmp

Filesize
624KB

Download
memory/3936-138-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/3936-137-0x0000000004F80000-0x0000000004F90000-memory.dmp

Filesize
64KB

Download
memory/3936-133-0x0000000000530000-0x00000000005BE000-memory.dmp

Filesize
568KB

Download
memory/3936-135-0x0000000005030000-0x00000000050C2000-memory.dmp

Filesize
584KB

Download
memory/3936-134-0x00000000055E0000-0x0000000005B84000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads