agenttesla | 010493b98e6676ace7201480f106d8b348aac9118755a5f55137b410dbf31d0c

General

Target

tmp.exe
Size

687KB
MD5

5cc0c336fc38231f8220dd959fe7ccee
SHA1

62c75a782b20545b29c879bc8c3f6307dd588111
SHA256

010493b98e6676ace7201480f106d8b348aac9118755a5f55137b410dbf31d0c
SHA512

181b59a15572f7261e96820ea62c6df57fd2ef5168e23947f8fed1034f24f45936c3521e2db79272ffd4f24a364c2ae2264f1e2d5240d534167d67381e8a9dde
SSDEEP

12288:Mg+Voi1HDSFR7XFHgAIa8PHWm81DNCdGKOotgtUG:VSHDah8PHWmmuxCU

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
server320.web-hosting.com
Port:
587
Username:
[email protected]
Password:
m#+f(b5{XRR3
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-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tmp.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tmp.exe
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tmp.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-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RMBJLaF = "C:\\Users\\Admin\\AppData\\Roaming\\RMBJLaF\\RMBJLaF.exe"	tmp.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
35	api.ipify.org
36	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 784 set thread context of 4604	784	tmp.exe	91

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4604	tmp.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 784 wrote to memory of 4604	784	tmp.exe	91
PID 784 wrote to memory of 4604	784	tmp.exe	91
PID 784 wrote to memory of 4604	784	tmp.exe	91
PID 784 wrote to memory of 4604	784	tmp.exe	91
PID 784 wrote to memory of 4604	784	tmp.exe	91
PID 784 wrote to memory of 4604	784	tmp.exe	91
PID 784 wrote to memory of 4604	784	tmp.exe	91
PID 784 wrote to memory of 4604	784	tmp.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tmp.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	tmp.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:784
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4604

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

memory/784-133-0x0000000000C20000-0x0000000000CD2000-memory.dmp

Filesize
712KB

Download
memory/784-134-0x0000000005D30000-0x00000000062D4000-memory.dmp

Filesize
5.6MB

Download
memory/784-135-0x0000000005680000-0x0000000005712000-memory.dmp

Filesize
584KB

Download
memory/784-136-0x0000000005830000-0x0000000005840000-memory.dmp

Filesize
64KB

Download
memory/784-137-0x0000000005730000-0x000000000573A000-memory.dmp

Filesize
40KB

Download
memory/784-138-0x0000000005830000-0x0000000005840000-memory.dmp

Filesize
64KB

Download
memory/784-139-0x00000000072F0000-0x000000000738C000-memory.dmp

Filesize
624KB

Download
memory/4604-140-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/4604-142-0x0000000005840000-0x00000000058A6000-memory.dmp

Filesize
408KB

Download
memory/4604-143-0x00000000058B0000-0x00000000058C0000-memory.dmp

Filesize
64KB

Download
memory/4604-145-0x00000000073B0000-0x0000000007400000-memory.dmp

Filesize
320KB

Download
memory/4604-146-0x00000000075D0000-0x0000000007792000-memory.dmp

Filesize
1.8MB

Download
memory/4604-147-0x00000000058B0000-0x00000000058C0000-memory.dmp

Filesize
64KB

Download

Analysis

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