ramnit | 7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8

General

Target

7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8.dll
Size

640KB
MD5

0ded733cc0a7040e28c4be0178a12910
SHA1

9d11daa466a2b6d3c84fbc4c8af2d1407ae93df9
SHA256

7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8
SHA512

b94ba50f9670182fc431f49e3121ab33dd6d169d1604ee15d349537a63ab53696122e47bcfa7d277ce6f62a63eebcddd292a5ee2750c0fb18261e072ccf3b615
SSDEEP

12288:lkTNnabKPWWH2bfCQrSO5AjzcCWdhTQ7ob3JMrhcrHzNjHThb:STR2KPl2zCQrSDjzcCWIA3JwcTRV

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
604	regsvr32Srv.exe
1076	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000005c50-57.dat	upx
behavioral1/files/0x0007000000005c50-59.dat	upx
behavioral1/files/0x0007000000005c50-61.dat	upx
behavioral1/files/0x000800000001446b-62.dat	upx
behavioral1/files/0x000800000001446b-64.dat	upx
behavioral1/memory/604-65-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x000800000001446b-67.dat	upx
behavioral1/memory/1076-68-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1516	regsvr32.exe
604	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\px7BC5.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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374563419"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{E909EC91-5E5B-11ED-AF38-FE72C9E2D9C9} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Modifies registry class 7 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6870D1D8-5018-454f-8DBE-4EE920743B8B}\TypeLib\ = "{2C826ED5-19DC-4e77-8E45-BACF0EFA623E}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6870D1D8-5018-454f-8DBE-4EE920743B8B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6870D1D8-5018-454f-8DBE-4EE920743B8B}\ = "MediaPlayer_9 Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6870D1D8-5018-454f-8DBE-4EE920743B8B}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6870D1D8-5018-454f-8DBE-4EE920743B8B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6870D1D8-5018-454f-8DBE-4EE920743B8B}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6870D1D8-5018-454f-8DBE-4EE920743B8B}\TypeLib	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1076	DesktopLayer.exe
1076	DesktopLayer.exe
1076	DesktopLayer.exe
1076	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1776	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1776	iexplore.exe
1776	iexplore.exe
1268	IEXPLORE.EXE
1268	IEXPLORE.EXE
1268	IEXPLORE.EXE
1268	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 1516	2020	regsvr32.exe	26
PID 2020 wrote to memory of 1516	2020	regsvr32.exe	26
PID 2020 wrote to memory of 1516	2020	regsvr32.exe	26
PID 2020 wrote to memory of 1516	2020	regsvr32.exe	26
PID 2020 wrote to memory of 1516	2020	regsvr32.exe	26
PID 2020 wrote to memory of 1516	2020	regsvr32.exe	26
PID 2020 wrote to memory of 1516	2020	regsvr32.exe	26
PID 1516 wrote to memory of 604	1516	regsvr32.exe	27
PID 1516 wrote to memory of 604	1516	regsvr32.exe	27
PID 1516 wrote to memory of 604	1516	regsvr32.exe	27
PID 1516 wrote to memory of 604	1516	regsvr32.exe	27
PID 604 wrote to memory of 1076	604	regsvr32Srv.exe	28
PID 604 wrote to memory of 1076	604	regsvr32Srv.exe	28
PID 604 wrote to memory of 1076	604	regsvr32Srv.exe	28
PID 604 wrote to memory of 1076	604	regsvr32Srv.exe	28
PID 1076 wrote to memory of 1776	1076	DesktopLayer.exe	29
PID 1076 wrote to memory of 1776	1076	DesktopLayer.exe	29
PID 1076 wrote to memory of 1776	1076	DesktopLayer.exe	29
PID 1076 wrote to memory of 1776	1076	DesktopLayer.exe	29
PID 1776 wrote to memory of 1268	1776	iexplore.exe	31
PID 1776 wrote to memory of 1268	1776	iexplore.exe	31
PID 1776 wrote to memory of 1268	1776	iexplore.exe	31
PID 1776 wrote to memory of 1268	1776	iexplore.exe	31

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8.dll
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1516
- - 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:604
  - - 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:1076
    - - 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:1776
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1776 CREDAT:275457 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1268

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\ZORJ0KPA.txt

Filesize
533B

MD5
9d170594eadfcd34032bc1883a969477

SHA1
99884d8c435595042dd68692728982e12f19d029

SHA256
a4815ea1bdb75b0de3b3edd1ea49ef49d2fd9eb5a87f2d03b047d4c7f2677ad3

SHA512
26483c7931b14bff4d6a2d658d6c49e5e90704b7edfce5bccc42dca495994215e095186b0a567b022002aae7563cf7e10d4a469a0fae728107c268d875490351

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/604-58-0x0000000000000000-mapping.dmp

Download
memory/604-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1076-63-0x0000000000000000-mapping.dmp

Download
memory/1076-68-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1516-56-0x0000000075451000-0x0000000075453000-memory.dmp

Filesize
8KB

Download
memory/1516-55-0x0000000000000000-mapping.dmp

Download
memory/2020-54-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp

Filesize
8KB

Download

Analysis

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