ramnit | a8e1c9c779459b13f978d2729da3f8375d6f450d054a1c92b6d0f10d9716019a

General

Target

a8e1c9c779459b13f978d2729da3f8375d6f450d054a1c92b6d0f10d9716019a.dll
Size

502KB
MD5

0cffc92991ce5f38e9b6502f927c29a0
SHA1

094d9cc00fa49ff2870488972ebe11016a7768fd
SHA256

a8e1c9c779459b13f978d2729da3f8375d6f450d054a1c92b6d0f10d9716019a
SHA512

8709949d63e39b08f26385133f2d3172b6f2808bf3edb5fa8fccc642ca9c9cb8ac0428b4f1c91a0fc3840599d2af6dca7e82e3a7f20e6ea2fc762bcfb88847e5
SSDEEP

12288:OLRJS+JNx/4Scmg4zaEGjv6GHBq0ajWjKK1lEf1Trq7QF3u:OLRJS+JNxAStg4zajvHq0aCXEf1TrIQo

Score

10^/10

ramnit banker spyware stealer trojan upx worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

Executes dropped EXE 2 IoCs

pid	Process
1704	regsvr32Srv.exe
1500	DesktopLayer.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0008000000005c51-57.dat	upx
behavioral1/files/0x0008000000005c51-59.dat	upx
behavioral1/files/0x0008000000005c51-61.dat	upx
behavioral1/files/0x000800000001448d-62.dat	upx
behavioral1/memory/1704-64-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x000800000001448d-65.dat	upx
behavioral1/files/0x000800000001448d-67.dat	upx
behavioral1/memory/1500-68-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
668	regsvr32.exe
1704	regsvr32Srv.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32Srv.exe	regsvr32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px1E2C.tmp	regsvr32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374558776"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{1A7C5071-5E51-11ED-8DFC-667719A561AF} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD5BA7FF-9071-40E9-A462-8DC5152B1776}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD5BA7FF-9071-40E9-A462-8DC5152B1776}\ = "Intel® Hardware MPEG-2 Decoder MFT"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD5BA7FF-9071-40E9-A462-8DC5152B1776}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a8e1c9c779459b13f978d2729da3f8375d6f450d054a1c92b6d0f10d9716019a.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\Categories	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\cd5ba7ff-9071-40e9-a462-8dc5152b1776\ = "Intel® Hardware MPEG-2 Decoder MFT"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\Categories\d6c02d4b-6833-45b4-971a-05a4b04bab91	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD5BA7FF-9071-40E9-A462-8DC5152B1776}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\cd5ba7ff-9071-40e9-a462-8dc5152b1776\Attributes = 41464d490100000015cba788077b344a9128e64c6703c4d313000000000000000700000000000000	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\cd5ba7ff-9071-40e9-a462-8dc5152b1776\MFTFlags = "36"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\cd5ba7ff-9071-40e9-a462-8dc5152b1776\OutputTypes = 7669647300001000800000aa00389b714e5631326139ae42ba67ff47ccc13eed7669647300001000800000aa00389b714e56313200001000800000aa00389b71	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\Categories\d6c02d4b-6833-45b4-971a-05a4b04bab91\cd5ba7ff-9071-40e9-a462-8dc5152b1776	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CD5BA7FF-9071-40E9-A462-8DC5152B1776}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\cd5ba7ff-9071-40e9-a462-8dc5152b1776	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\MediaFoundation\Transforms\cd5ba7ff-9071-40e9-a462-8dc5152b1776\InputTypes = 7669647300001000800000aa00389b7126806de046dbcf11b4d100805f6cbbea7669647300001000800000aa00389b714d50473200001000900000aa00389b71	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1500	DesktopLayer.exe
1500	DesktopLayer.exe
1500	DesktopLayer.exe
1500	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1744	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1744	iexplore.exe
1744	iexplore.exe
1344	IEXPLORE.EXE
1344	IEXPLORE.EXE
1344	IEXPLORE.EXE
1344	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 668	684	regsvr32.exe	27
PID 684 wrote to memory of 668	684	regsvr32.exe	27
PID 684 wrote to memory of 668	684	regsvr32.exe	27
PID 684 wrote to memory of 668	684	regsvr32.exe	27
PID 684 wrote to memory of 668	684	regsvr32.exe	27
PID 684 wrote to memory of 668	684	regsvr32.exe	27
PID 684 wrote to memory of 668	684	regsvr32.exe	27
PID 668 wrote to memory of 1704	668	regsvr32.exe	28
PID 668 wrote to memory of 1704	668	regsvr32.exe	28
PID 668 wrote to memory of 1704	668	regsvr32.exe	28
PID 668 wrote to memory of 1704	668	regsvr32.exe	28
PID 1704 wrote to memory of 1500	1704	regsvr32Srv.exe	29
PID 1704 wrote to memory of 1500	1704	regsvr32Srv.exe	29
PID 1704 wrote to memory of 1500	1704	regsvr32Srv.exe	29
PID 1704 wrote to memory of 1500	1704	regsvr32Srv.exe	29
PID 1500 wrote to memory of 1744	1500	DesktopLayer.exe	30
PID 1500 wrote to memory of 1744	1500	DesktopLayer.exe	30
PID 1500 wrote to memory of 1744	1500	DesktopLayer.exe	30
PID 1500 wrote to memory of 1744	1500	DesktopLayer.exe	30
PID 1744 wrote to memory of 1344	1744	iexplore.exe	32
PID 1744 wrote to memory of 1344	1744	iexplore.exe	32
PID 1744 wrote to memory of 1344	1744	iexplore.exe	32
PID 1744 wrote to memory of 1344	1744	iexplore.exe	32

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a8e1c9c779459b13f978d2729da3f8375d6f450d054a1c92b6d0f10d9716019a.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:684
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\a8e1c9c779459b13f978d2729da3f8375d6f450d054a1c92b6d0f10d9716019a.dll
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:668
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1704
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:1500
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1744
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1744 CREDAT:275457 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1344

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\R1JX8E5X.txt

Filesize
603B

MD5
a96c4b79a9be64a5a05fa56d0b8d6450

SHA1
570e232b804bf878d6062c1609b12c62725691fc

SHA256
16d29e9d581f4451b4c944d9514703a777f32c48d35f9b4013063599309c45b5

SHA512
0ad3019fa4d1fd1771addfff7e4c7934b8500bae5b5128d14975c907e8ef79432b0ff028db8254774fe64b95a27753383c70a7dc4c33aa423c3dec679096e1f9

Download Submit
C:\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/668-56-0x0000000075111000-0x0000000075113000-memory.dmp

Filesize
8KB

Download
memory/684-54-0x000007FEFB7F1000-0x000007FEFB7F3000-memory.dmp

Filesize
8KB

Download
memory/1500-68-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1704-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing