ramnit | 617b974a254a5355bd97eadb259eed1faccfc524b6c8492228967cb98b39aac4

Analysis

max time kernel
95s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 10:32

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General

Target

$PLUGINSDIR/System.dll
Size

67KB
MD5

bd05feb8825b15dcdd9100d478f04e17
SHA1

a67d82be96a439ce1c5400740da5c528f7f550e0
SHA256

4972cca9555b7e5dcb6feef63605305193835ea63f343df78902bbcd432ba496
SHA512

67f1894c79bbcef4c7fedd91e33ec48617d5d34c2d9ebcd700c935b7fe1b08971d4c68a71d5281abac97e62d6b8c8f318cc6ff15ea210ddcf21ff04a9e5a7f95
SSDEEP

1536:2IfbmtOpUtoqoQvfDrghNT+2w8mbJ1/NfSttVx:bfi4GoqVvbaNXubJ1JI

Score

10^/10

ramnit banker discovery 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
Ramnit family
ramnit

Executes dropped EXE 2 IoCs

pid	Process
4608	rundll32Srv.exe
856	DesktopLayer.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral10/files/0x000c000000023b3e-3.dat	upx
behavioral10/memory/4608-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/4608-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/856-11-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/856-16-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/856-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px9D2A.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3220	5048	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DesktopLayer.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3314457975"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "443097358"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31154616"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31154616"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{F0E714F1-CDAB-11EF-A7EA-CA65FB447F0B} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3310083128"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3310083128"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31154616"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
856	DesktopLayer.exe
856	DesktopLayer.exe
856	DesktopLayer.exe
856	DesktopLayer.exe
856	DesktopLayer.exe
856	DesktopLayer.exe
856	DesktopLayer.exe
856	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4916	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4916	iexplore.exe
4916	iexplore.exe
3668	IEXPLORE.EXE
3668	IEXPLORE.EXE
3668	IEXPLORE.EXE
3668	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2920 wrote to memory of 5048	2920	rundll32.exe	83
PID 2920 wrote to memory of 5048	2920	rundll32.exe	83
PID 2920 wrote to memory of 5048	2920	rundll32.exe	83
PID 5048 wrote to memory of 4608	5048	rundll32.exe	84
PID 5048 wrote to memory of 4608	5048	rundll32.exe	84
PID 5048 wrote to memory of 4608	5048	rundll32.exe	84
PID 4608 wrote to memory of 856	4608	rundll32Srv.exe	86
PID 4608 wrote to memory of 856	4608	rundll32Srv.exe	86
PID 4608 wrote to memory of 856	4608	rundll32Srv.exe	86
PID 856 wrote to memory of 4916	856	DesktopLayer.exe	87
PID 856 wrote to memory of 4916	856	DesktopLayer.exe	87
PID 4916 wrote to memory of 3668	4916	iexplore.exe	90
PID 4916 wrote to memory of 3668	4916	iexplore.exe	90
PID 4916 wrote to memory of 3668	4916	iexplore.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4608
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:856
    - - 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:4916
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4916 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3668
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 620
    3⤵
    - Program crash
    PID:3220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5048 -ip 5048
1⤵
PID:4672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
d04487ea873e59ddefea38775dcec895

SHA1
f8e33f29c997bdfeefbb2e6429cbfd6431cdd71d

SHA256
985fa533b7805324c794c285f21264c5bdde1fd4025de0a3621308f50d91dba5

SHA512
1f99fefad95792abee1e0bbc7b4286c4202ef6152494f3da1cabf78dc57cd98bb639485846bf0c3fbed700e746f9da70e54894f5d77e6659c967444531a6664c

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

Filesize
404B

MD5
d1168ff50328c03388679fe1d60f99b4

SHA1
70fd55144b3f1638747fddf2e991ab1786f3d059

SHA256
108b6b220657c45a6ec3859eb3716fd2db0998b4289353d47c5f4df14264f711

SHA512
3bf6cf779e0225dd7b8704cd0a1b5a41c0cbfea6ada98bd009282e509859bc202acdfd380a385e8324b1e57e7d7910ac540a8c175dda6c5ee751ac980c4931aa

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VKYZDMA5\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/856-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/856-11-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/856-14-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download
memory/856-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4608-5-0x0000000002040000-0x000000000204F000-memory.dmp

Filesize
60KB

Download
memory/4608-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4608-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5048-18-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/5048-0-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

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