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/4428-28-0x0000000000400000-0x000000000043C000-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-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3996 set thread context of 4428	3996	powershell.exe	91

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3996	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 6 IoCs

pid	Process
3996	powershell.exe
3996	powershell.exe
3996	powershell.exe
3996	powershell.exe
4428	RegAsm.exe
4428	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3996	powershell.exe
Token: SeDebugPrivilege	4428	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4428	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 3372	3996	powershell.exe	88
PID 3996 wrote to memory of 3372	3996	powershell.exe	88
PID 3372 wrote to memory of 3164	3372	csc.exe	89
PID 3372 wrote to memory of 3164	3372	csc.exe	89
PID 3996 wrote to memory of 2728	3996	powershell.exe	90
PID 3996 wrote to memory of 2728	3996	powershell.exe	90
PID 3996 wrote to memory of 2728	3996	powershell.exe	90
PID 3996 wrote to memory of 4428	3996	powershell.exe	91
PID 3996 wrote to memory of 4428	3996	powershell.exe	91
PID 3996 wrote to memory of 4428	3996	powershell.exe	91
PID 3996 wrote to memory of 4428	3996	powershell.exe	91
PID 3996 wrote to memory of 4428	3996	powershell.exe	91
PID 3996 wrote to memory of 4428	3996	powershell.exe	91
PID 3996 wrote to memory of 4428	3996	powershell.exe	91
PID 3996 wrote to memory of 4428	3996	powershell.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\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:3996
- 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\l2wadotz\l2wadotz.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3372
- - 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\RES87BE.tmp" "c:\Users\Admin\AppData\Local\Temp\l2wadotz\CSC2F11E646AD34DA1AE363F3C08ECBEC.TMP"
    3⤵
    PID:3164
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:2728
- 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:4428

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RES87BE.tmp

Filesize
1KB

MD5
6da414b1e2b3b3e58fe77a6f520a2aa2

SHA1
9f2e22418ce65ea1adb3c535fe4a961b21c86419

SHA256
b623126a1ccce6cfcbc4049aa209c4ce349c10815cd3edc4f559506c13742946

SHA512
2dba1e7a81624a9b5a6a7b77bd87a12cf3621a5b52b26f852f2a73f302c3c27cb83b5d271d4f38199cf98ce73502469c473eca893f3fc028efa75b3aa1be1d3c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pdn23jhd.ooj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\l2wadotz\l2wadotz.dll

Filesize
13KB

MD5
ded6159efe79b1103abe5c28baabca65

SHA1
9344351c310e98c9c47adf1e9004e5e31560b6a5

SHA256
4b009ecb7667e62c8f766753d175dec524239fd6cefa049e4104769c502ac117

SHA512
023907defeb2671164a43bb38b707a5f3a95a4899296ec2d236a93e0fd704ba2a9a96345204ec1e811122f9fa52f893b9a95515d81358c4ecbe1589e09f709ad

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\l2wadotz\CSC2F11E646AD34DA1AE363F3C08ECBEC.TMP

Filesize
652B

MD5
f5a32a6cd6c947ec7673d1c6de8b554c

SHA1
832f720f7d56a891213d84694ca4d5d9d3535bcc

SHA256
091b9e4e2df0258ae664f84e6079d7f0d22eb174b98adf2a759f02fd8711e02e

SHA512
1bed1a87e523d011e63866627e9c6b329616b5414664cd2bced0875a5f25ad19a984f35237b9aa362e44d1a0171d895b4a4cbffcc5a0fa7e6ce842c01cc200d3

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\l2wadotz\l2wadotz.0.cs

Filesize
13KB

MD5
e03b1e7ba7f1a53a7e10c0fd9049f437

SHA1
3bb851a42717eeb588eb7deadfcd04c571c15f41

SHA256
3ca2d456cf2f8d781f2134e1481bd787a9cb6f4bcaa2131ebbe0d47a0eb36427

SHA512
a098a8e2a60a75357ee202ed4bbe6b86fa7b2ebae30574791e0d13dcf3ee95b841a14b51553c23b95af32a29cc2265afc285b3b0442f0454ea730de4d647383f

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\l2wadotz\l2wadotz.cmdline

Filesize
327B

MD5
531032d90a4054cd2c7b4f79847aed9e

SHA1
217abb56bc227a6ae37489536ff9aabedeb45b47

SHA256
bf69fb9b63856fb1dd1302c6a9eab27a4c499d186f469d35762978b1be7e96af

SHA512
b7cf1fdd76386eb9cbc67f0a7e09d28947405abb15ee1bbb6856d4aa91b77b6d0d7276f5f60456c15096254e877a335e10466cf771dede1d02155f5c8c9147d5

Download Submit
memory/3996-13-0x00000255A1BE0000-0x00000255A1C56000-memory.dmp

Filesize
472KB

Download
memory/3996-31-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/3996-12-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/3996-11-0x00007FF820BB0000-0x00007FF821671000-memory.dmp

Filesize
10.8MB

Download
memory/3996-6-0x00000255888A0000-0x00000255888C2000-memory.dmp

Filesize
136KB

Download
memory/3996-26-0x00000255889B0000-0x00000255889BA000-memory.dmp

Filesize
40KB

Download
memory/3996-0-0x00007FF820BB3000-0x00007FF820BB5000-memory.dmp

Filesize
8KB

Download
memory/4428-28-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4428-32-0x0000000005AD0000-0x0000000006074000-memory.dmp

Filesize
5.6MB

Download
memory/4428-33-0x0000000005470000-0x0000000005502000-memory.dmp

Filesize
584KB

Download
memory/4428-34-0x0000000005730000-0x00000000057CC000-memory.dmp

Filesize
624KB

Download
memory/4428-35-0x00000000056F0000-0x0000000005708000-memory.dmp

Filesize
96KB

Download
memory/4428-36-0x0000000006430000-0x0000000006496000-memory.dmp

Filesize
408KB

Download
memory/4428-38-0x00000000067B0000-0x0000000006800000-memory.dmp

Filesize
320KB

Download
memory/4428-39-0x00000000067A0000-0x00000000067AA000-memory.dmp

Filesize
40KB

Download

Analysis

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