ramnit | ec5fcf601c128a76b1eaba3c15da6c9102b4d392bd9bc57dd60875c89a68a6bd

General

Target

ec5fcf601c128a76b1eaba3c15da6c9102b4d392bd9bc57dd60875c89a68a6bd.dll
Size

260KB
MD5

06b4ed769a579acc25ad5def18f7c980
SHA1

6242f2ae575985b2be45424ead5278071e7c35b7
SHA256

ec5fcf601c128a76b1eaba3c15da6c9102b4d392bd9bc57dd60875c89a68a6bd
SHA512

636c089ada0586b22e8af9d890e1bc8a8a2958eb3370a2fb89013fc777417766cded39209495e25e8c120cfcb5ad7cd31fe27f580d55e39d4df5b4810a5aab9f
SSDEEP

3072:qalH/wS3J5zgy/PFxjznaCZilDH4A2DRqQk6DxodA6NnThAiI1k4+CI:lv7rvjpZilTiDkasn+ifl

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
828	regsvr32Srv.exe
940	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000005c51-58.dat	upx
behavioral1/files/0x0008000000005c51-60.dat	upx
behavioral1/files/0x0008000000005c51-62.dat	upx
behavioral1/files/0x000800000001435a-63.dat	upx
behavioral1/files/0x000800000001435a-65.dat	upx
behavioral1/memory/828-66-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x000800000001435a-68.dat	upx
behavioral1/memory/940-69-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1128	regsvr32.exe
828	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 created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px3229.tmp	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\GPU	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\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374557257"	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\WindowsSearch	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\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
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	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\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{904EA7C1-5E4D-11ED-AD72-5E7A81A7298C} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	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\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	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\IntelliForms	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\Main\WindowsSearch\Version = "WS not running"	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\InternetRegistry	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\PageSetup	iexplore.exe

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ec5fcf601c128a76b1eaba3c15da6c9102b4d392bd9bc57dd60875c89a68a6bd.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}\FriendlyName = "GDCL Mpeg-4 Demultiplexor"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}\FilterData = 02000000000060000300000000000000307069330000000000000000010000000000000000000000307479330000000088000000980000003170693308000000000000000100000000000000000000003074793300000000a8000000980000003270693308000000000000000100000000000000000000003074793300000000b80000009800000083eb36e44f52ce119f530020af0ba770000000000000000000000000000000007669647300001000800000aa00389b716175647300001000800000aa00389b71	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}\ = "GDCL Mpeg-4 Demultiplexor"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}\CLSID = "{025BE2E4-1787-4DA4-A585-C5B2B9EEB57C}"	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
940	DesktopLayer.exe
940	DesktopLayer.exe
940	DesktopLayer.exe
940	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1700	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1700	iexplore.exe
1700	iexplore.exe
1108	IEXPLORE.EXE
1108	IEXPLORE.EXE
1108	IEXPLORE.EXE
1108	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 1128	2016	regsvr32.exe	26
PID 2016 wrote to memory of 1128	2016	regsvr32.exe	26
PID 2016 wrote to memory of 1128	2016	regsvr32.exe	26
PID 2016 wrote to memory of 1128	2016	regsvr32.exe	26
PID 2016 wrote to memory of 1128	2016	regsvr32.exe	26
PID 2016 wrote to memory of 1128	2016	regsvr32.exe	26
PID 2016 wrote to memory of 1128	2016	regsvr32.exe	26
PID 1128 wrote to memory of 828	1128	regsvr32.exe	27
PID 1128 wrote to memory of 828	1128	regsvr32.exe	27
PID 1128 wrote to memory of 828	1128	regsvr32.exe	27
PID 1128 wrote to memory of 828	1128	regsvr32.exe	27
PID 828 wrote to memory of 940	828	regsvr32Srv.exe	28
PID 828 wrote to memory of 940	828	regsvr32Srv.exe	28
PID 828 wrote to memory of 940	828	regsvr32Srv.exe	28
PID 828 wrote to memory of 940	828	regsvr32Srv.exe	28
PID 940 wrote to memory of 1700	940	DesktopLayer.exe	29
PID 940 wrote to memory of 1700	940	DesktopLayer.exe	29
PID 940 wrote to memory of 1700	940	DesktopLayer.exe	29
PID 940 wrote to memory of 1700	940	DesktopLayer.exe	29
PID 1700 wrote to memory of 1108	1700	iexplore.exe	31
PID 1700 wrote to memory of 1108	1700	iexplore.exe	31
PID 1700 wrote to memory of 1108	1700	iexplore.exe	31
PID 1700 wrote to memory of 1108	1700	iexplore.exe	31

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ec5fcf601c128a76b1eaba3c15da6c9102b4d392bd9bc57dd60875c89a68a6bd.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\ec5fcf601c128a76b1eaba3c15da6c9102b4d392bd9bc57dd60875c89a68a6bd.dll
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1128
- - 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:828
  - - 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:940
    - - 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:1700
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1700 CREDAT:275457 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1108

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\3IZ42TLM.txt

Filesize
603B

MD5
d58a179eabeece8b7904bc2bd308c261

SHA1
cd4f14436eafd1abadf154ce046c32a42241b717

SHA256
2799d0eb46773524f796d450a941f4bda357f83d9707578be204edd471bfe0a4

SHA512
f09d2c9ccc8841bcb5381e248c8b7db1738f27cdab12cba2a7f5d13d9908cbbb1c0ab28d586e9e0ab8d58fed30d7b60f96a63dafe333c6a48eb2bf0d380aa28f

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/828-66-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/940-69-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1128-57-0x0000000010000000-0x0000000010043000-memory.dmp

Filesize
268KB

Download
memory/1128-56-0x0000000075A71000-0x0000000075A73000-memory.dmp

Filesize
8KB

Download
memory/2016-54-0x000007FEFC2F1000-0x000007FEFC2F3000-memory.dmp

Filesize
8KB

Download

Analysis

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