ramnit | a5a535361d3ddddba8abf3bb0f38602f86c646d39b1436c8278e5f90f28c028b

Analysis

max time kernel
93s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18/11/2024, 13:24

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General

Target

a5a535361d3ddddba8abf3bb0f38602f86c646d39b1436c8278e5f90f28c028b.dll
Size

359KB
MD5

23f55828dad58be8bac265b03c60255a
SHA1

405e997f2d7e46c69360f6b65741d45420c23c26
SHA256

a5a535361d3ddddba8abf3bb0f38602f86c646d39b1436c8278e5f90f28c028b
SHA512

7f652f20bbfec9a64eeb124b6ab10f92cd35aaf160405dde3cc1cc5064746107d685d15293f87ec475c4f74754d7125e38827bf9d1e88dcba38bd3bb0e877cc4
SSDEEP

6144:xQv5i2M/AOvLQTvxaVTZfwPZ6qxqFl8Gsrr1aT05gzacgQIxrL:xei2M/AOvMdaVTerrRq3gQu

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
2516	rundll32Srv.exe
712	DesktopLayer.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000023c6b-2.dat	upx
behavioral2/memory/2516-3-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2516-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/712-13-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/712-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxCBFB.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
3156	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32Srv.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "962446027"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144381"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\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-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "438701224"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{64D2D548-A5B0-11EF-BDBF-D2BD7E71DA05} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "966977293"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31144381"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144381"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "962446027"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
712	DesktopLayer.exe
712	DesktopLayer.exe
712	DesktopLayer.exe
712	DesktopLayer.exe
712	DesktopLayer.exe
712	DesktopLayer.exe
712	DesktopLayer.exe
712	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4216	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4216	iexplore.exe
4216	iexplore.exe
3420	IEXPLORE.EXE
3420	IEXPLORE.EXE
3420	IEXPLORE.EXE
3420	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4764 wrote to memory of 5048	4764	rundll32.exe	83
PID 4764 wrote to memory of 5048	4764	rundll32.exe	83
PID 4764 wrote to memory of 5048	4764	rundll32.exe	83
PID 5048 wrote to memory of 2516	5048	rundll32.exe	84
PID 5048 wrote to memory of 2516	5048	rundll32.exe	84
PID 5048 wrote to memory of 2516	5048	rundll32.exe	84
PID 2516 wrote to memory of 712	2516	rundll32Srv.exe	86
PID 2516 wrote to memory of 712	2516	rundll32Srv.exe	86
PID 2516 wrote to memory of 712	2516	rundll32Srv.exe	86
PID 712 wrote to memory of 4216	712	DesktopLayer.exe	87
PID 712 wrote to memory of 4216	712	DesktopLayer.exe	87
PID 4216 wrote to memory of 3420	4216	iexplore.exe	89
PID 4216 wrote to memory of 3420	4216	iexplore.exe	89
PID 4216 wrote to memory of 3420	4216	iexplore.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a5a535361d3ddddba8abf3bb0f38602f86c646d39b1436c8278e5f90f28c028b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a5a535361d3ddddba8abf3bb0f38602f86c646d39b1436c8278e5f90f28c028b.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:2516
  - - 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:712
    - - 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:4216
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4216 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3420
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 620
    3⤵
    - Program crash
    PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5048 -ip 5048
1⤵
PID:4440

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
cdfebcd84ff934bb577a1d3a07a3ccad

SHA1
5092f452374bb3943b00cf53bcad7a92215bae87

SHA256
7f877563622aeda07395133fb7c81746df3389c360549e2309c161c8a394d9bf

SHA512
605a455017dc67d6257a5b434ce9a8df8fbac30dcf6e45856c823ee9998f4008ae08947129a23d88c222c866a06192c2e75374880fe8b67d591816492ae4f56b

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

Filesize
404B

MD5
4a08c98d722b23544d31ef5b9d51cab3

SHA1
765fcba20e197c5c5e50af4a89b2a4207bcaf8ec

SHA256
4a001b54d93a85bf0e92a5bf6b9e55d17733c219df4d46c1c3d7520a7034c632

SHA512
fd89910e09ca0ac27e68305256b2d0560fc5f7f3a8dc5d957c7eaf4dfe986b0dc6a669947f1a5697bdd5af2e5c1202977226982777a95106f5341100f41b7205

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6IJLDY7V\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/712-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/712-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/712-11-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/2516-3-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2516-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2516-5-0x0000000000480000-0x000000000048F000-memory.dmp

Filesize
60KB

Download
memory/5048-16-0x0000000000400000-0x0000000000463000-memory.dmp

Filesize
396KB

Download