agenttesla | d52bed3aedf780b69f3f16e2d2cc740497664d479bb4aaa69206200106628f49

Analysis

max time kernel
142s
max time network
127s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-09-2024 03:34

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General

Target

INV 493178246.exe
Size

820KB
MD5

94ec06012c2eabfff68c349a5330136a
SHA1

833d6264d984eb8816a95d91e4c491c8fb8554f4
SHA256

d2e12e778519b6ea35daaef5eadae95b9f9e7f60676c8ddae1b321e384984c63
SHA512

0ceaff384363e25e860fc977252b5827b847f61b8532f6a7b725ae829069f078559ebee406ed3bfc164b5f9569e6188078c458172111fc655433b869bc9e74f5
SSDEEP

12288:bb6mCM9sXHh9BoRPqsxOVKuS5r70xwgeqh043L97/hOcUW9sqVZEG:qeSHhYRRxOVGcxJBdb12hi

Score

10^/10

agenttesla collection credential_access discovery keylogger persistence spyware stealer trojan upx

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.deltataxation.com.au
Port:
587
Username:
[email protected]
Password:
flX?jHei(%+5

Signatures

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

AgentTesla payload 8 IoCs

resource	yara_rule
behavioral1/memory/1744-10-0x00000000002C0000-0x00000000002FC000-memory.dmp	family_agenttesla
behavioral1/memory/1744-12-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral1/memory/1744-11-0x00000000002C0000-0x00000000002FC000-memory.dmp	family_agenttesla
behavioral1/memory/1744-8-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral1/memory/1744-9-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral1/memory/1744-23-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral1/memory/1744-24-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla
behavioral1/memory/1744-25-0x0000000000400000-0x0000000000485000-memory.dmp	family_agenttesla

Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003
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 2 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

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1744-12-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1744-8-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1744-7-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1744-9-0x0000000000400000-0x0000000000485000-memory.dmp	upx
behavioral1/memory/1744-4-0x0000000000400000-0x0000000000485000-memory.dmp	upx

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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV 493178246.exe
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV 493178246.exe
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV 493178246.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\NewApp = "C:\\Users\\Admin\\AppData\\Roaming\\NewApp\\NewApp.exe"	INV 493178246.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2108 set thread context of 1744	2108	INV 493178246.exe	30

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	INV 493178246.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	INV 493178246.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2108	INV 493178246.exe
1744	INV 493178246.exe
1744	INV 493178246.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2108	INV 493178246.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1744	INV 493178246.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1744	INV 493178246.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 1744	2108	INV 493178246.exe	30
PID 2108 wrote to memory of 1744	2108	INV 493178246.exe	30
PID 2108 wrote to memory of 1744	2108	INV 493178246.exe	30
PID 2108 wrote to memory of 1744	2108	INV 493178246.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV 493178246.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	INV 493178246.exe

C:\Users\Admin\AppData\Local\Temp\INV 493178246.exe
"C:\Users\Admin\AppData\Local\Temp\INV 493178246.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\INV 493178246.exe
  "C:\Users\Admin\AppData\Local\Temp\INV 493178246.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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/1744-9-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1744-25-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1744-24-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1744-23-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1744-10-0x00000000002C0000-0x00000000002FC000-memory.dmp

Filesize
240KB

Download
memory/1744-12-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1744-11-0x00000000002C0000-0x00000000002FC000-memory.dmp

Filesize
240KB

Download
memory/1744-8-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1744-7-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/1744-4-0x0000000000400000-0x0000000000485000-memory.dmp

Filesize
532KB

Download
memory/2108-3-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/2108-6-0x0000000000400000-0x00000000004D3000-memory.dmp

Filesize
844KB

Download
memory/2108-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2108-1-0x0000000000570000-0x0000000000580000-memory.dmp

Filesize
64KB

Download
memory/2108-2-0x0000000000570000-0x0000000000580000-memory.dmp

Filesize
64KB

Download