agenttesla | 159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6

General

Target

159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe
Size

362KB
MD5

2a95e40b3de8bae0e222d2ff59ee75be
SHA1

bc07f1750bcd0e5bf9547cd137ff43a6f13596f2
SHA256

159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6
SHA512

8f654ba5cb8c439f349a256f322bca8db57b19f0169fb06cdc8d22f250ab797f092d6cc9c745779fcf6fb22791c15e3f1eb1a6b7d9bad2615ccc6b06ac1b0c3f
SSDEEP

6144:dt4KH1mfw8berduFFpyUImnB8dRu51Xm5R3wmssC8robfWP/6cQFmOsfNGRWR8ZM:7tH1mfFbe4FFpyUIieRu51epwmssC8r7

Score

10^/10

agenttesla 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 family
agenttesla

AgentTesla payload 3 IoCs

resource	yara_rule
behavioral1/memory/2380-13-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/2380-15-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla
behavioral1/memory/2380-14-0x0000000000400000-0x000000000045A000-memory.dmp	family_agenttesla

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\update.exe.vbs	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe

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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2940 set thread context of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31

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	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe
2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe
2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe
2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe
2380	RegAsm.exe
2380	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31
PID 2940 wrote to memory of 2380	2940	159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe
"C:\Users\Admin\AppData\Local\Temp\159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\159aaa20e5fedb0ddbfa91231ea738a65b630467151bf327fe3eb7c54ef220a6.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:2380

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

Replay Monitor

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Downloads

memory/2380-13-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/2380-15-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/2380-14-0x0000000000400000-0x000000000045A000-memory.dmp

Filesize
360KB

Download
memory/2940-2-0x0000000000320000-0x0000000000420000-memory.dmp

Filesize
1024KB

Download
memory/2940-10-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/2940-9-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/2940-8-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/2940-7-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/2940-6-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/2940-5-0x0000000000750000-0x0000000000751000-memory.dmp

Filesize
4KB

Download
memory/2940-4-0x0000000000110000-0x0000000000115000-memory.dmp

Filesize
20KB

Download
memory/2940-3-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download

Analysis

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