agenttesla | 546233eb70c31ee8e878d018045fba90e06659fabdddbacd505d624b5e0cdbaa

General

Target

2f12d12ac06ba0762329e9d02c10d4202117c2201b9eaa8361a8e57c908373a6.ps1
Size

356KB
MD5

c86a89bfbb6695378fb207de8578d206
SHA1

f9a2ab9b571a77c51d5ef5ed90a1a62f4f0f98d5
SHA256

2f12d12ac06ba0762329e9d02c10d4202117c2201b9eaa8361a8e57c908373a6
SHA512

9dec301fe44b8a4f6966a5de911ba8dd8ed60c56cb67008a12feb6c21a6924dd978e0f787dc286cbc530ea5b5a8a73d6c3bcfb7fc2079bbc257f6c4722daad12
SSDEEP

1536:EUKRwevEPGKAjHFTNva119BaPffP5Cfx54awKUZDpUfIvXN9Ll68JxE9g5qvEgzJ:NeG

Score

10^/10

agenttesla collection credential_access discovery execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

http://103.125.190.248/j/p12m/mawa/30b1acecbda6c5d6ed4c.php

Signatures

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

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral2/memory/3256-28-0x0000000000400000-0x000000000043C000-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

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RegAsm.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 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
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4524 set thread context of 3256	4524	powershell.exe	92

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4524	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4524	powershell.exe
4524	powershell.exe
4524	powershell.exe
4524	powershell.exe
4524	powershell.exe
4524	powershell.exe
3256	RegAsm.exe
3256	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4524	powershell.exe
Token: SeDebugPrivilege	3256	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3256	RegAsm.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 3704	4524	powershell.exe	88
PID 4524 wrote to memory of 3704	4524	powershell.exe	88
PID 3704 wrote to memory of 3152	3704	csc.exe	89
PID 3704 wrote to memory of 3152	3704	csc.exe	89
PID 4524 wrote to memory of 1712	4524	powershell.exe	90
PID 4524 wrote to memory of 1712	4524	powershell.exe	90
PID 4524 wrote to memory of 1712	4524	powershell.exe	90
PID 4524 wrote to memory of 4996	4524	powershell.exe	91
PID 4524 wrote to memory of 4996	4524	powershell.exe	91
PID 4524 wrote to memory of 4996	4524	powershell.exe	91
PID 4524 wrote to memory of 3256	4524	powershell.exe	92
PID 4524 wrote to memory of 3256	4524	powershell.exe	92
PID 4524 wrote to memory of 3256	4524	powershell.exe	92
PID 4524 wrote to memory of 3256	4524	powershell.exe	92
PID 4524 wrote to memory of 3256	4524	powershell.exe	92
PID 4524 wrote to memory of 3256	4524	powershell.exe	92
PID 4524 wrote to memory of 3256	4524	powershell.exe	92
PID 4524 wrote to memory of 3256	4524	powershell.exe	92

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:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\2f12d12ac06ba0762329e9d02c10d4202117c2201b9eaa8361a8e57c908373a6.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4524
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\j0ea0s0l\j0ea0s0l.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3704
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESA20C.tmp" "c:\Users\Admin\AppData\Local\Temp\j0ea0s0l\CSCF95EBEF5FBB14F5586665D5F17C96B5B.TMP"
    3⤵
    PID:3152
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1712
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:4996
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Drops file in Drivers directory
  - 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:3256

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

C:\Users\Admin\AppData\Local\Temp\RESA20C.tmp

Filesize
1KB

MD5
21787acf5187d50b3ec959149eb3f500

SHA1
b7b61579757515138090580814af881b156bcadc

SHA256
5c91be16cc6529c35f0be4bf2897e5cd12d15ff1e56d2834c1ff8f8fab984742

SHA512
9ef63d604d5c64bd7364e9c8f2e7ca106053de1cdd19723d735c0bd9ca7fd0b5bab571a2a2c2514567c3128d9d031ab1ed2810b090dec5cbf88e57a2495056ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3a4k2inw.eou.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\j0ea0s0l\j0ea0s0l.dll

Filesize
13KB

MD5
3167b569b4587d71672b9978e1b677b9

SHA1
19353cf30d6d13cea197907ffb4e6798e351d7ea

SHA256
301a9b1fbd919d87a3e237ad8dc417ce547c620a79a161c7376bbc2ee80fd05c

SHA512
e20ee2984aa3db00416f992eecd06f110ebac98b8f0713a668e636f25d54f9116afca7ff87e2deffa1f1fff29f6d2fa8a31cfa0aca7d135c2c290207d9b4b687

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\j0ea0s0l\CSCF95EBEF5FBB14F5586665D5F17C96B5B.TMP

Filesize
652B

MD5
026c909b4ece083f78f4e64469f07dfb

SHA1
7e551168b84426cee84673bab77ad698a739acd4

SHA256
f7e2035d7c9e06a97e9807514d9e8e40c25d6e32f0081f6b94ff35018f67a8be

SHA512
9f5fc8299cf5a2c3ee312de9c8c3d9c7019efe06728aa72f2a82f6a2be3b78e70ab4729919c8d83079e2319175b0b19efe78658dcae9f9a18d1772176710426e

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\j0ea0s0l\j0ea0s0l.0.cs

Filesize
13KB

MD5
e03b1e7ba7f1a53a7e10c0fd9049f437

SHA1
3bb851a42717eeb588eb7deadfcd04c571c15f41

SHA256
3ca2d456cf2f8d781f2134e1481bd787a9cb6f4bcaa2131ebbe0d47a0eb36427

SHA512
a098a8e2a60a75357ee202ed4bbe6b86fa7b2ebae30574791e0d13dcf3ee95b841a14b51553c23b95af32a29cc2265afc285b3b0442f0454ea730de4d647383f

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\j0ea0s0l\j0ea0s0l.cmdline

Filesize
327B

MD5
e8dba88b34bd5b2ce2d74186152742c6

SHA1
ab869bf6da1a9825f0e0404f785aa162a6fbafeb

SHA256
89aa74f007050fe38f04ed1b7c4825de798e1ea80c1618ef1f635996fa4fa7c8

SHA512
eb1b5b6620fa001259a3319e38eb10a9d15f1e4a5854ff0bf025b068ae133236d50e9d9085aacaa9041c9efa55c3e8777d2f79b42d14bd0d448abdca612d5a08

Download Submit
memory/3256-33-0x00000000057B0000-0x0000000005842000-memory.dmp

Filesize
584KB

Download
memory/3256-32-0x0000000005E70000-0x0000000006414000-memory.dmp

Filesize
5.6MB

Download
memory/3256-39-0x0000000002FB0000-0x0000000002FBA000-memory.dmp

Filesize
40KB

Download
memory/3256-38-0x0000000002F50000-0x0000000002FA0000-memory.dmp

Filesize
320KB

Download
memory/3256-36-0x0000000006720000-0x0000000006786000-memory.dmp

Filesize
408KB

Download
memory/3256-35-0x0000000006580000-0x0000000006598000-memory.dmp

Filesize
96KB

Download
memory/3256-28-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/3256-34-0x00000000059C0000-0x0000000005A5C000-memory.dmp

Filesize
624KB

Download
memory/4524-7-0x000001E1252E0000-0x000001E125302000-memory.dmp

Filesize
136KB

Download
memory/4524-0-0x00007FFDB74A3000-0x00007FFDB74A5000-memory.dmp

Filesize
8KB

Download
memory/4524-31-0x00007FFDB74A0000-0x00007FFDB7F61000-memory.dmp

Filesize
10.8MB

Download
memory/4524-26-0x000001E124EE0000-0x000001E124EEA000-memory.dmp

Filesize
40KB

Download
memory/4524-13-0x000001E125750000-0x000001E1257C6000-memory.dmp

Filesize
472KB

Download
memory/4524-11-0x00007FFDB74A0000-0x00007FFDB7F61000-memory.dmp

Filesize
10.8MB

Download
memory/4524-12-0x00007FFDB74A0000-0x00007FFDB7F61000-memory.dmp

Filesize
10.8MB

Download

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