ramnit | a7338cfccc94a2fa8add6f69a591f60abf246cad681e4a86537fbcabf145dd47

Analysis

max time kernel
91s
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
09-11-2024 14:33

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General

Target

a7338cfccc94a2fa8add6f69a591f60abf246cad681e4a86537fbcabf145dd47N.dll
Size

640KB
MD5

33d0d0afd640b2a949b08a1e33fc5350
SHA1

3d4c4bd59b6b0c6a4fc4c7bffa90663407c4655e
SHA256

a7338cfccc94a2fa8add6f69a591f60abf246cad681e4a86537fbcabf145dd47
SHA512

c81505b5a810a2276c43a07533ece3aefb9cca135b86b329c4a99c742da707d2503b0d14dd773a535187e78f9bed8af8a7b81670bb8b0d1300a70fe4e76d52e9
SSDEEP

12288:2kTNnabKPWWH2bfCQrSO5AjzcCWdhTQ7ob3JMrhcrHzNjP:/TR2KPl2zCQrSDjzcCWIA3JwcTR

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
4056	regsvr32Srv.exe
3276	DesktopLayer.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023ba4-3.dat	upx
behavioral2/memory/4056-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4056-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3276-12-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3276-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3276-16-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3276-18-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxD63C.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

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	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DesktopLayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142580"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1921354102"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142580"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{9DC15F7A-9EA7-11EF-B319-D2BD7E71DA05} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\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
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1916666309"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142580"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1916666309"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437927796"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe

Modifies registry class 7 IoCs

description	ioc	Process
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\\a7338cfccc94a2fa8add6f69a591f60abf246cad681e4a86537fbcabf145dd47N.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

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3276	DesktopLayer.exe
3276	DesktopLayer.exe
3276	DesktopLayer.exe
3276	DesktopLayer.exe
3276	DesktopLayer.exe
3276	DesktopLayer.exe
3276	DesktopLayer.exe
3276	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2844	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2844	iexplore.exe
2844	iexplore.exe
2412	IEXPLORE.EXE
2412	IEXPLORE.EXE
2412	IEXPLORE.EXE
2412	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 868	3424	regsvr32.exe	85
PID 3424 wrote to memory of 868	3424	regsvr32.exe	85
PID 3424 wrote to memory of 868	3424	regsvr32.exe	85
PID 868 wrote to memory of 4056	868	regsvr32.exe	86
PID 868 wrote to memory of 4056	868	regsvr32.exe	86
PID 868 wrote to memory of 4056	868	regsvr32.exe	86
PID 4056 wrote to memory of 3276	4056	regsvr32Srv.exe	87
PID 4056 wrote to memory of 3276	4056	regsvr32Srv.exe	87
PID 4056 wrote to memory of 3276	4056	regsvr32Srv.exe	87
PID 3276 wrote to memory of 2844	3276	DesktopLayer.exe	88
PID 3276 wrote to memory of 2844	3276	DesktopLayer.exe	88
PID 2844 wrote to memory of 2412	2844	iexplore.exe	89
PID 2844 wrote to memory of 2412	2844	iexplore.exe	89
PID 2844 wrote to memory of 2412	2844	iexplore.exe	89

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a7338cfccc94a2fa8add6f69a591f60abf246cad681e4a86537fbcabf145dd47N.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\a7338cfccc94a2fa8add6f69a591f60abf246cad681e4a86537fbcabf145dd47N.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:868
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4056
  - - 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:3276
    - - 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:2844
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2844 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2412

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
042619486a0f512d0313c7b4fa6c9756

SHA1
9a3f09247b4b03933f23331b4f0207672c93e02a

SHA256
a231a95c194f54c33eef59babf53d979f0342fbc68bc52dbb524887fd378418d

SHA512
4b2b32d754d116b0609ca43b9ff54ad72c9e22ddbd617b5c94586a219c297c13823c0c2812937db6b2181382176bba46b2f3d37b4b29ae6f171e01ada216c257

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

Filesize
404B

MD5
6862568465245c735332a5fcafd24df6

SHA1
16c217bb6ca5bd7e223440928e3011ccea46ed56

SHA256
0ebd05abb556cc705e1e49e3f562abdeff05a525b9151a4889ecf2deeed06f76

SHA512
fe3703386c46331c89eac218a7f43708dfce304c847cad20a45a4601125b67d575cae02c675395707a7b28be478b4c9be0a328718f940e86d17bcd7546c41e7a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8R55UT9S\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/868-0-0x0000000010000000-0x00000000100A6000-memory.dmp

Filesize
664KB

Download
memory/3276-18-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3276-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3276-15-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/3276-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3276-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4056-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4056-6-0x0000000002040000-0x000000000204F000-memory.dmp

Filesize
60KB

Download
memory/4056-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download