agenttesla | 8f4b7ac0b9480896a0beb13fe0d53b5b05b02d69701179cd635b180e3b3cc841

Analysis

max time kernel
92s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29-09-2024 22:28

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General

Target

ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe
Size

538KB
MD5

ff662affb1d909c3718c669b49bab822
SHA1

e4631cfa1e57267045ee83138a3b0fb66dd57f84
SHA256

8f4b7ac0b9480896a0beb13fe0d53b5b05b02d69701179cd635b180e3b3cc841
SHA512

c396c3f91eefc579177a7bf651848a49793bc649f20e1b731a92c0b6c2f65b63785e21b021f26fae64400d6f3b29f15c050dda8659a85e565042680a33e037f3
SSDEEP

12288:q9GAbO8gOE5tnIta5knMreqNpbOa6m6RMIqOakm:q9/OTnnExgpqtRM1Oa

Score

10^/10

agenttesla agilenet collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Signatures

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

AgentTesla payload 15 IoCs

resource	yara_rule
behavioral2/memory/4324-6-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-29-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-32-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-30-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-24-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-23-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-21-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-19-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-18-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-17-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-16-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-15-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-27-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-14-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/4324-13-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral2/memory/4716-3-0x00000000034A0000-0x0000000003504000-memory.dmp	agile_net

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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 3 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

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
43	checkip.amazonaws.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4716 set thread context of 4324	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4324	RegAsm.exe
4324	RegAsm.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe
4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4324	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4324	RegAsm.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4716 wrote to memory of 1748	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	82
PID 4716 wrote to memory of 1748	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	82
PID 4716 wrote to memory of 1748	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	82
PID 4716 wrote to memory of 4324	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	83
PID 4716 wrote to memory of 4324	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	83
PID 4716 wrote to memory of 4324	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	83
PID 4716 wrote to memory of 4324	4716	ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ff662affb1d909c3718c669b49bab822_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  PID:1748
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4324-24-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-11-0x00000000712A0000-0x0000000071851000-memory.dmp

Filesize
5.7MB

Download
memory/4324-33-0x00000000712A0000-0x0000000071851000-memory.dmp

Filesize
5.7MB

Download
memory/4324-34-0x00000000712A2000-0x00000000712A3000-memory.dmp

Filesize
4KB

Download
memory/4324-30-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-6-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-10-0x00000000712A2000-0x00000000712A3000-memory.dmp

Filesize
4KB

Download
memory/4324-14-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-27-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-29-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-32-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-35-0x00000000712A0000-0x0000000071851000-memory.dmp

Filesize
5.7MB

Download
memory/4324-15-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-23-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-21-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-19-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-16-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4324-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4716-0-0x0000000074A1E000-0x0000000074A1F000-memory.dmp

Filesize
4KB

Download
memory/4716-1-0x0000000000F70000-0x0000000000FFC000-memory.dmp

Filesize
560KB

Download
memory/4716-8-0x0000000074A10000-0x00000000751C0000-memory.dmp

Filesize
7.7MB

Download
memory/4716-9-0x0000000074A10000-0x00000000751C0000-memory.dmp

Filesize
7.7MB

Download
memory/4716-5-0x0000000005990000-0x00000000059DC000-memory.dmp

Filesize
304KB

Download
memory/4716-4-0x0000000074A10000-0x00000000751C0000-memory.dmp

Filesize
7.7MB

Download
memory/4716-3-0x00000000034A0000-0x0000000003504000-memory.dmp

Filesize
400KB

Download
memory/4716-2-0x0000000003320000-0x0000000003328000-memory.dmp

Filesize
32KB

Download