ramnit | 7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8

Analysis

max time kernel
74s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2022 21:00

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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
1712	regsvr32Srv.exe
3792	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0004000000022dd5-134.dat	upx
behavioral2/files/0x0004000000022dd5-135.dat	upx
behavioral2/files/0x0005000000022dd8-137.dat	upx
behavioral2/files/0x0005000000022dd8-139.dat	upx
behavioral2/memory/1712-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3792-140-0x0000000000400000-0x000000000042E000-memory.dmp	upx

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\pxD323.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
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30995040"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1699045626"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1684200912"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30995040"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1684200912"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "374559825"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{8FB1CF40-5E53-11ED-A0EE-4E6695810362} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30995040"	iexplore.exe

Modifies registry class 7 IoCs

description	ioc	Process
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
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

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3792	DesktopLayer.exe
3792	DesktopLayer.exe
3792	DesktopLayer.exe
3792	DesktopLayer.exe
3792	DesktopLayer.exe
3792	DesktopLayer.exe
3792	DesktopLayer.exe
3792	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4912	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4912	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4912	iexplore.exe
4912	iexplore.exe
4872	IEXPLORE.EXE
4872	IEXPLORE.EXE
4872	IEXPLORE.EXE
4872	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1560 wrote to memory of 2012	1560	regsvr32.exe	81
PID 1560 wrote to memory of 2012	1560	regsvr32.exe	81
PID 1560 wrote to memory of 2012	1560	regsvr32.exe	81
PID 2012 wrote to memory of 1712	2012	regsvr32.exe	82
PID 2012 wrote to memory of 1712	2012	regsvr32.exe	82
PID 2012 wrote to memory of 1712	2012	regsvr32.exe	82
PID 1712 wrote to memory of 3792	1712	regsvr32Srv.exe	83
PID 1712 wrote to memory of 3792	1712	regsvr32Srv.exe	83
PID 1712 wrote to memory of 3792	1712	regsvr32Srv.exe	83
PID 3792 wrote to memory of 4912	3792	DesktopLayer.exe	84
PID 3792 wrote to memory of 4912	3792	DesktopLayer.exe	84
PID 4912 wrote to memory of 4872	4912	iexplore.exe	85
PID 4912 wrote to memory of 4872	4912	iexplore.exe	85
PID 4912 wrote to memory of 4872	4912	iexplore.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\7f3893ca8a8823f52d0d9885afa5efed6ff5f689202e00d75ca98f283661caf8.dll
  2⤵
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1712
  - - 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:3792
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4912
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4912 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4872

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

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\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
0ef90204485649be625ea2be1b9018fb

SHA1
28fbc0852140ec51d0c097a4962a160afa4d754b

SHA256
c8028acd9a8c8c795b87cf835fc3182d003264608f161baa0ca020711b22bca0

SHA512
b8bbba0dcc6cb6f87efb47a605953c93fcf93c5a65520b822ebfee25754632d6bb66c2a946f457e1e40a92556683ddb9d14f2703782833e12d7e37bb3b7fcec5

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
434B

MD5
6de539811985b206759191b0cb6025e7

SHA1
b51c42710b6791040bd281d15ff5aad5ea741dda

SHA256
583007914852ca84d2b33849491a8fd7473c303bf2d1788a36675936ab88215b

SHA512
ddfaebf98b6699ecca105fcafd3a7efddfc6d303ea77ca2b87a3a66020c73d9eba72c355e0e399dc162aa2112d1367be4e0fd4ae2e18f2bdda31896b3aec1bd7

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
memory/1712-133-0x0000000000000000-mapping.dmp

Download
memory/1712-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2012-132-0x0000000000000000-mapping.dmp

Download
memory/3792-136-0x0000000000000000-mapping.dmp

Download
memory/3792-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download