agenttesla | 75976b1d7ab35aee3b84e9180a6776247f0003041b98fb2ac8e99e46eeabd274

General

Target

file.exe
Size

589KB
MD5

c0af1f322029601e938f7775cc6e8a7f
SHA1

9f6d388c75fe807d1228e2ddd9dc5d5c49ebf3fb
SHA256

75976b1d7ab35aee3b84e9180a6776247f0003041b98fb2ac8e99e46eeabd274
SHA512

e0e1b5216079006ef6a2e3ee7117dfc793f5265445d7ee0f6c73c4a4e64941152819dc70b69dc61bbc8ac0999694057a4aee5bc43ae51385cf62b283e61acd4a
SSDEEP

12288:WOnbqjcvdapIVHhjyA5T7Eofe/k7zhGkWoYoXb0CHNt059uBJt1:WJadMIBhjyC3Ese/wwdoYoL0CHNt0TuX

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
server327.web-hosting.com
Port:
587
Username:
[email protected]
Password:
3L3lvqtPESC3
Email To:
[email protected]

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
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-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	file.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	file.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	file.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-1-5-21-2275444769-3691835758-4097679484-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RMBJLaF = "C:\\Users\\Admin\\AppData\\Roaming\\RMBJLaF\\RMBJLaF.exe"	file.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
27	api.ipify.org
28	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4896 set thread context of 4336	4896	file.exe	92

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4896	file.exe
4896	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4896	file.exe
Token: SeDebugPrivilege	4336	file.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4896 wrote to memory of 4784	4896	file.exe	91
PID 4896 wrote to memory of 4784	4896	file.exe	91
PID 4896 wrote to memory of 4784	4896	file.exe	91
PID 4896 wrote to memory of 4336	4896	file.exe	92
PID 4896 wrote to memory of 4336	4896	file.exe	92
PID 4896 wrote to memory of 4336	4896	file.exe	92
PID 4896 wrote to memory of 4336	4896	file.exe	92
PID 4896 wrote to memory of 4336	4896	file.exe	92
PID 4896 wrote to memory of 4336	4896	file.exe	92
PID 4896 wrote to memory of 4336	4896	file.exe	92
PID 4896 wrote to memory of 4336	4896	file.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	file.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	file.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  PID:4784
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4336

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

Replay Monitor

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Downloads

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

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
memory/4336-140-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4336-148-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/4336-147-0x0000000006EC0000-0x0000000007082000-memory.dmp

Filesize
1.8MB

Download
memory/4336-146-0x0000000006CA0000-0x0000000006CF0000-memory.dmp

Filesize
320KB

Download
memory/4336-144-0x0000000005100000-0x0000000005110000-memory.dmp

Filesize
64KB

Download
memory/4336-143-0x0000000004FE0000-0x0000000005046000-memory.dmp

Filesize
408KB

Download
memory/4896-136-0x00000000057D0000-0x00000000057E0000-memory.dmp

Filesize
64KB

Download
memory/4896-139-0x0000000008660000-0x00000000086FC000-memory.dmp

Filesize
624KB

Download
memory/4896-138-0x00000000057D0000-0x00000000057E0000-memory.dmp

Filesize
64KB

Download
memory/4896-137-0x00000000055B0000-0x00000000055BA000-memory.dmp

Filesize
40KB

Download
memory/4896-133-0x0000000000B60000-0x0000000000BFA000-memory.dmp

Filesize
616KB

Download
memory/4896-135-0x0000000005650000-0x00000000056E2000-memory.dmp

Filesize
584KB

Download
memory/4896-134-0x0000000005B60000-0x0000000006104000-memory.dmp

Filesize
5.6MB

Download

Analysis

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