agenttesla | 637a095f84e7441e083f0dd3c1bac2aa03ae8d0041a4719f242155af303045ba

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17/04/2024, 12:49

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General

Target

ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe
Size

541KB
MD5

0fd0e0858393bc225ac7b8ef828886d4
SHA1

bf740041ed899ce885e69bb74eb374ff9d0ce8b6
SHA256

ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432
SHA512

67066d5c6d7d4eb4db13513fab9a7ec14818bfbea8dac14958b6c94520e80fb0b3c9d4ba217d956db6616f7afa7e54c21328d3f50f76c8ead72a238e36dbac21
SSDEEP

12288:Mf4xP9rgJDar4uhHgJ9+iB28HqQEaMbcfTVGC11n:MfwuJeEuhFYbKbcfTUC11n

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot5902621720:AAG63saKfqN8L1Gxy5Zs-PFqX69DHY3i2Yg/

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2420	svchost.exe

Loads dropped DLL 6 IoCs

pid	Process
2540	cmd.exe
2228	WerFault.exe
2228	WerFault.exe
2228	WerFault.exe
2228	WerFault.exe
2228	WerFault.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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasm.exe
Key opened	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasm.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\""	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\AppData = "C:\\Users\\Admin\\AppData\\Roaming\\AppData\\AppData.exe"	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
5	api.ipify.org
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2420 set thread context of 2576	2420	svchost.exe	37

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2624	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2648	timeout.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe
2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe
2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe
2420	svchost.exe
2576	regasm.exe
2576	regasm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe
Token: SeDebugPrivilege	2420	svchost.exe
Token: SeDebugPrivilege	2576	regasm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2576	regasm.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2912	2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe	29
PID 2352 wrote to memory of 2912	2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe	29
PID 2352 wrote to memory of 2912	2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe	29
PID 2352 wrote to memory of 2540	2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe	31
PID 2352 wrote to memory of 2540	2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe	31
PID 2352 wrote to memory of 2540	2352	ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe	31
PID 2912 wrote to memory of 2624	2912	cmd.exe	33
PID 2912 wrote to memory of 2624	2912	cmd.exe	33
PID 2912 wrote to memory of 2624	2912	cmd.exe	33
PID 2540 wrote to memory of 2648	2540	cmd.exe	34
PID 2540 wrote to memory of 2648	2540	cmd.exe	34
PID 2540 wrote to memory of 2648	2540	cmd.exe	34
PID 2540 wrote to memory of 2420	2540	cmd.exe	35
PID 2540 wrote to memory of 2420	2540	cmd.exe	35
PID 2540 wrote to memory of 2420	2540	cmd.exe	35
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2576	2420	svchost.exe	37
PID 2420 wrote to memory of 2228	2420	svchost.exe	38
PID 2420 wrote to memory of 2228	2420	svchost.exe	38
PID 2420 wrote to memory of 2228	2420	svchost.exe	38

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	regasm.exe

C:\Users\Admin\AppData\Local\Temp\ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe
"C:\Users\Admin\AppData\Local\Temp\ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2912
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2624
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp48F2.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2540
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2648
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2420
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
      4⤵
      Accesses Microsoft Outlook profiles
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      outlook_office_path
      outlook_win_path
      PID:2576
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2420 -s 672
      4⤵
      Loads dropped DLL
      PID:2228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp48F2.tmp.bat

Filesize
151B

MD5
1f31966c9c9670c9f456140cf05e6aec

SHA1
54c6e7b0d319c6ad8323e7e746bb1d5807fce51a

SHA256
f3d3cf82d23e20e707d8a44c0d2de5d4cb9867a4c4dcfe48cc93fe64333436df

SHA512
691dd5a617288a73cf45f1a92d9653f1d71e076888780e7a0b1ad02e51eb78651085de0c226cf4a2cad1a7cbdaa1fb4972b5738f5467543ef571ee7570e18fec

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe

Filesize
541KB

MD5
0fd0e0858393bc225ac7b8ef828886d4

SHA1
bf740041ed899ce885e69bb74eb374ff9d0ce8b6

SHA256
ab695d2c8f20f44e9ebcace3886882322f2ffec605dbf9b806a68b12b7bb8432

SHA512
67066d5c6d7d4eb4db13513fab9a7ec14818bfbea8dac14958b6c94520e80fb0b3c9d4ba217d956db6616f7afa7e54c21328d3f50f76c8ead72a238e36dbac21

Download Submit
memory/2352-0-0x0000000001040000-0x000000000104C000-memory.dmp

Filesize
48KB

Download
memory/2352-1-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

Filesize
9.9MB

Download
memory/2352-2-0x000000001ADA0000-0x000000001AE20000-memory.dmp

Filesize
512KB

Download
memory/2352-3-0x000000001AAA0000-0x000000001AB24000-memory.dmp

Filesize
528KB

Download
memory/2352-13-0x000007FEF54C0000-0x000007FEF5EAC000-memory.dmp

Filesize
9.9MB

Download
memory/2420-20-0x000000001ACB0000-0x000000001AD30000-memory.dmp

Filesize
512KB

Download
memory/2420-19-0x000007FEF4AD0000-0x000007FEF54BC000-memory.dmp

Filesize
9.9MB

Download
memory/2420-21-0x0000000000620000-0x00000000006A4000-memory.dmp

Filesize
528KB

Download
memory/2420-18-0x0000000000970000-0x000000000097C000-memory.dmp

Filesize
48KB

Download
memory/2420-44-0x000000001ACB0000-0x000000001AD30000-memory.dmp

Filesize
512KB

Download
memory/2420-43-0x000007FEF4AD0000-0x000007FEF54BC000-memory.dmp

Filesize
9.9MB

Download
memory/2576-26-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-24-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2576-29-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-31-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-33-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-22-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/2576-23-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download