agenttesla | 970c4fa87fa25321d0c21249ef8eae46ab39061b3839266b49874e754c24d146

General

Target

Scan docs.exe
Size

1.0MB
MD5

667dff5fe5e685c40701d59e912fab36
SHA1

2039240f535f75dbb43abfd7f9f8883593b5723a
SHA256

a863c5d16b5aa24f51529b7482d42401caf457ef0560545725be60bbbc16bd6a
SHA512

02effb668427a14349a276f5df9a25e321f5cf243f4bd2b7b6d768048c8bd0ee5215c6601dfce1b9a9151bcf796b584405c3af64e9dd320c9148eaaba35c25e8
SSDEEP

24576:wgIIOXml5rD77MgdFjbh9EbKUFZzVdfML:wa9vb75IZz+

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan upx

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
Simple262627

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
Simple262627

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware 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 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4472-3-0x0000000000400000-0x00000000004A5000-memory.dmp	upx
behavioral2/memory/4472-7-0x0000000000400000-0x00000000004A5000-memory.dmp	upx
behavioral2/memory/4472-5-0x0000000000400000-0x00000000004A5000-memory.dmp	upx
behavioral2/memory/4472-6-0x0000000000400000-0x00000000004A5000-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-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan docs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan docs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan docs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4428 set thread context of 4472	4428	Scan docs.exe	82

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	Scan docs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Scan docs.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4428	Scan docs.exe
4428	Scan docs.exe
4472	Scan docs.exe
4472	Scan docs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4428	Scan docs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4472	Scan docs.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4428 wrote to memory of 4472	4428	Scan docs.exe	82
PID 4428 wrote to memory of 4472	4428	Scan docs.exe	82
PID 4428 wrote to memory of 4472	4428	Scan docs.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan docs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Scan docs.exe

C:\Users\Admin\AppData\Local\Temp\Scan docs.exe
"C:\Users\Admin\AppData\Local\Temp\Scan docs.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4428
- C:\Users\Admin\AppData\Local\Temp\Scan docs.exe
  "C:\Users\Admin\AppData\Local\Temp\Scan docs.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4472

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4428-11-0x0000000000400000-0x000000000050A000-memory.dmp

Filesize
1.0MB

Download
memory/4428-1-0x0000000002620000-0x0000000002628000-memory.dmp

Filesize
32KB

Download
memory/4428-2-0x0000000002640000-0x0000000002641000-memory.dmp

Filesize
4KB

Download
memory/4428-0-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/4472-6-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/4472-25-0x0000000004B00000-0x00000000050A4000-memory.dmp

Filesize
5.6MB

Download
memory/4472-7-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/4472-10-0x0000000000670000-0x00000000006BC000-memory.dmp

Filesize
304KB

Download
memory/4472-5-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/4472-22-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/4472-3-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/4472-9-0x0000000000670000-0x00000000006BC000-memory.dmp

Filesize
304KB

Download
memory/4472-24-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/4472-23-0x0000000000400000-0x00000000004A5000-memory.dmp

Filesize
660KB

Download
memory/4472-26-0x0000000004A10000-0x0000000004AA2000-memory.dmp

Filesize
584KB

Download
memory/4472-27-0x0000000005250000-0x00000000052EC000-memory.dmp

Filesize
624KB

Download
memory/4472-29-0x00000000058F0000-0x0000000005908000-memory.dmp

Filesize
96KB

Download
memory/4472-30-0x0000000005920000-0x0000000005986000-memory.dmp

Filesize
408KB

Download
memory/4472-33-0x0000000005F90000-0x0000000005FE0000-memory.dmp

Filesize
320KB

Download
memory/4472-39-0x0000000006410000-0x000000000641A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads