Analysis
- max time kernel
73s - max time network
138s - platform
windows7_x64 - resource
win7v20210410 - submitted
21/08/2021, 22:50
Static task
static1
Behavioral task
behavioral1
Sample
a249b457c3b1d22040ca4e8d09039449.exe
Resource
win7v20210410
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
a249b457c3b1d22040ca4e8d09039449.exe
Resource
win10v20210408
windows10_x64
0 signatures
0 seconds
General
- Target a249b457c3b1d22040ca4e8d09039449.exe
- Size 875KB
- Sample210821-fp23mbftps
- SHA256 fcecbcea7e3f8b8af9657b27aee80c44fc6bf24c2df563607925feca4e2fec38
- MD5 a249b457c3b1d22040ca4e8d09039449
- SHA1 fb07d5682336102f2f803467342d543954e0dc90
- SHA512 5da871b495a52455aebd5918aa7e09e4fa84cb08462efab9aeb4e902ce5f6d270cf5e5a27cadc251e17388014fc6814d485690f52b864a71c6bbc100c4a870f1
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
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redline
Botnet
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Build2_Mastif
C2
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95.181.157.69:8552
Signatures
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine Payload 3 IoCs
resource yara_rule behavioral1/memory/1192-82-0x0000000000400000-0x000000000041E000-memory.dmp family_redline behavioral1/memory/1192-83-0x0000000000418F8E-mapping.dmp family_redline behavioral1/memory/1192-85-0x0000000000400000-0x000000000041E000-memory.dmp family_redline - Executes dropped EXE 3 IoCs
pid Process 1496 Install.exe 1792 RUNTIM~1.EXE 1192 RUNTIM~1.EXE - Loads dropped DLL 1 IoCs
pid Process 1792 RUNTIM~1.EXE - Obfuscated with Agile.Net obfuscator 4 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
resource yara_rule behavioral1/files/0x00040000000130f8-70.dat agile_net behavioral1/files/0x00040000000130f8-71.dat agile_net behavioral1/files/0x00040000000130f8-81.dat agile_net behavioral1/files/0x00040000000130f8-84.dat agile_net - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce a249b457c3b1d22040ca4e8d09039449.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" a249b457c3b1d22040ca4e8d09039449.exe - Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1792 set thread context of 1192 1792 RUNTIM~1.EXE 37 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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description ioc Process Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a075387cde96d701 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\MFV = 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 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\PageSetup iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{A4172451-02D1-11EC-8DF3-6AD422E6A34B} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\LowRegistry iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Zoom iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000065ddff33cf27ea42baaccd2790771deb0000000002000000000010660000000100002000000099b0375d865b8a4949831a87296100004ead3da977a002d455c6bfb47ebe87ea000000000e800000000200002000000090aae3938657dc109c1989d4d47ed384f13d670af1c98158a428bfedccf5886f20000000658d51177d7544a886f74bc1aafe3aa15a8e5f2a034f5d602bc6321f86babb6040000000e2790c2634f49d8dfe28e613e2051c8101d4ff9f28331f28f3bf210e283caab45324d650e30a9543cf0ab1af935d50cefa169890fc0d7e53d5cea844dda7d23a iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\GPU iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "336350971" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\IETld\LowMic iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\IntelliForms iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\InternetRegistry iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1192 RUNTIM~1.EXE - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1948 iexplore.exe - Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 1948 iexplore.exe 1948 iexplore.exe 1508 IEXPLORE.EXE 1508 IEXPLORE.EXE 1508 IEXPLORE.EXE 1508 IEXPLORE.EXE - Suspicious use of WriteProcessMemory 41 IoCs
description pid Process procid_target PID 1072 wrote to memory of 1496 1072 a249b457c3b1d22040ca4e8d09039449.exe 25 PID 1072 wrote to memory of 1496 1072 a249b457c3b1d22040ca4e8d09039449.exe 25 PID 1072 wrote to memory of 1496 1072 a249b457c3b1d22040ca4e8d09039449.exe 25 PID 1072 wrote to memory of 1496 1072 a249b457c3b1d22040ca4e8d09039449.exe 25 PID 1072 wrote to memory of 1496 1072 a249b457c3b1d22040ca4e8d09039449.exe 25 PID 1072 wrote to memory of 1496 1072 a249b457c3b1d22040ca4e8d09039449.exe 25 PID 1072 wrote to memory of 1496 1072 a249b457c3b1d22040ca4e8d09039449.exe 25 PID 1496 wrote to memory of 1164 1496 Install.exe 27 PID 1496 wrote to memory of 1164 1496 Install.exe 27 PID 1496 wrote to memory of 1164 1496 Install.exe 27 PID 1496 wrote to memory of 1164 1496 Install.exe 27 PID 1496 wrote to memory of 1164 1496 Install.exe 27 PID 1496 wrote to memory of 1164 1496 Install.exe 27 PID 1496 wrote to memory of 1164 1496 Install.exe 27 PID 1164 wrote to memory of 1948 1164 cmd.exe 29 PID 1164 wrote to memory of 1948 1164 cmd.exe 29 PID 1164 wrote to memory of 1948 1164 cmd.exe 29 PID 1164 wrote to memory of 1948 1164 cmd.exe 29 PID 1072 wrote to memory of 1792 1072 a249b457c3b1d22040ca4e8d09039449.exe 30 PID 1072 wrote to memory of 1792 1072 a249b457c3b1d22040ca4e8d09039449.exe 30 PID 1072 wrote to memory of 1792 1072 a249b457c3b1d22040ca4e8d09039449.exe 30 PID 1072 wrote to memory of 1792 1072 a249b457c3b1d22040ca4e8d09039449.exe 30 PID 1072 wrote to memory of 1792 1072 a249b457c3b1d22040ca4e8d09039449.exe 30 PID 1072 wrote to memory of 1792 1072 a249b457c3b1d22040ca4e8d09039449.exe 30 PID 1072 wrote to memory of 1792 1072 a249b457c3b1d22040ca4e8d09039449.exe 30 PID 1948 wrote to memory of 1508 1948 iexplore.exe 32 PID 1948 wrote to memory of 1508 1948 iexplore.exe 32 PID 1948 wrote to memory of 1508 1948 iexplore.exe 32 PID 1948 wrote to memory of 1508 1948 iexplore.exe 32 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37 PID 1792 wrote to memory of 1192 1792 RUNTIM~1.EXE 37
Processes
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C:\Users\Admin\AppData\Local\Temp\a249b457c3b1d22040ca4e8d09039449.exe"C:\Users\Admin\AppData\Local\Temp\a249b457c3b1d22040ca4e8d09039449.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1072 -
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Install.exeC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Install.exe2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1496 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\7zS19D7.tmp\Install.cmd" "3⤵
- Suspicious use of WriteProcessMemory
PID:1164 -
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" https://iplogger.org/1XQju74⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1948 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1948 CREDAT:275457 /prefetch:25⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1508
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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXEC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1792 -
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE"C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNTIM~1.EXE"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1192
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