ramnit | a0e3b7329c8642ce18e78114a3407626993caf6b942002170a0bc6817e2f795c

Analysis

max time kernel
95s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2024 01:18

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General

Target

a0e3b7329c8642ce18e78114a3407626993caf6b942002170a0bc6817e2f795cN.dll
Size

224KB
MD5

3d6cae3e52803a429bfd24b95388d170
SHA1

41afd5dbf38cd083945b59e243b6b63bfad38e7c
SHA256

a0e3b7329c8642ce18e78114a3407626993caf6b942002170a0bc6817e2f795c
SHA512

452ef3da4e4fac6701b229eac8e18594815f42f8403408e4d000a1f154940ce95242dfec9a24d060e997acbbad5e26df6b43006d785d7789ad47f9c280c49ed2
SSDEEP

6144:Th8d15radWEXFjys88Qy8Af/RoEznpwfBs1:V8dXWRMsEy9hD0s

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

Processes:

regsvr32Srv.exeDesktopLayer.exe

pid	Process
836	regsvr32Srv.exe
2764	DesktopLayer.exe

Drops file in System32 directory 1 IoCs

Processes:

regsvr32.exe

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

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/files/0x000c000000023b10-3.dat	upx
behavioral2/memory/836-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/836-8-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2764-13-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2764-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

Processes:

regsvr32Srv.exe

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px77FF.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

Processes:

regsvr32.exeregsvr32Srv.exeDesktopLayer.exeIEXPLORE.EXE

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

Processes:

IEXPLORE.EXEiexplore.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	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\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31145285"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	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
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{E58FD4E8-A938-11EF-A7EA-468C69F2ED48} = "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\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	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\LastCheckForUpdateHighDateTime = "31145285"	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\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3119815767"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31145285"	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\LastCheckForUpdateLowDateTime = "3119815767"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	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\WindowsSearch\Version = "WS not running"	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\DomainSuggestion\NextUpdateDate = "439089706"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	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
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3123409527"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe

Modifies registry class 17 IoCs

Processes:

regsvr32.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\OMSP\Source Filter = "{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\ = "Mxshow Oms Source"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a0e3b7329c8642ce18e78114a3407626993caf6b942002170a0bc6817e2f795cN.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\CLSID = "{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\ = "Dxshow Oms Source"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{96CE7B0D-06B3-42E2-8DB7-CFC6CF0121F6}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\OMSP	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a0e3b7329c8642ce18e78114a3407626993caf6b942002170a0bc6817e2f795cN.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\FilterData = 020000000000400001000000000000003070693308000000000000000100000000000000000000003074793300000000380000004800000083eb36e44f52ce119f530020af0ba77000000000000000000000000000000000	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\InprocServer32\ThreadingModel = "Both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{083863F1-70DE-11D0-BD40-00A0C911CE86}\Instance\{E4C3B74F-0C02-4D4E-B932-F7A1889B3ABB}\FriendlyName = "Kylin Source"	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	Process
2764	DesktopLayer.exe
2764	DesktopLayer.exe
2764	DesktopLayer.exe
2764	DesktopLayer.exe
2764	DesktopLayer.exe
2764	DesktopLayer.exe
2764	DesktopLayer.exe
2764	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid	Process
5032	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid	Process
5032	iexplore.exe
5032	iexplore.exe
2704	IEXPLORE.EXE
2704	IEXPLORE.EXE
2704	IEXPLORE.EXE
2704	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

regsvr32.exeregsvr32.exeregsvr32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	Process	procid_target
PID 4864 wrote to memory of 4860	4864	regsvr32.exe	83
PID 4864 wrote to memory of 4860	4864	regsvr32.exe	83
PID 4864 wrote to memory of 4860	4864	regsvr32.exe	83
PID 4860 wrote to memory of 836	4860	regsvr32.exe	84
PID 4860 wrote to memory of 836	4860	regsvr32.exe	84
PID 4860 wrote to memory of 836	4860	regsvr32.exe	84
PID 836 wrote to memory of 2764	836	regsvr32Srv.exe	85
PID 836 wrote to memory of 2764	836	regsvr32Srv.exe	85
PID 836 wrote to memory of 2764	836	regsvr32Srv.exe	85
PID 2764 wrote to memory of 5032	2764	DesktopLayer.exe	86
PID 2764 wrote to memory of 5032	2764	DesktopLayer.exe	86
PID 5032 wrote to memory of 2704	5032	iexplore.exe	87
PID 5032 wrote to memory of 2704	5032	iexplore.exe	87
PID 5032 wrote to memory of 2704	5032	iexplore.exe	87

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\a0e3b7329c8642ce18e78114a3407626993caf6b942002170a0bc6817e2f795cN.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\a0e3b7329c8642ce18e78114a3407626993caf6b942002170a0bc6817e2f795cN.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4860
- - 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:836
  - - 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:2764
    - - 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:5032
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5032 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2704

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
a5d59031144ac6ab3dbf6358566aa618

SHA1
f6fb4567bbfd07f0df27083b36a179e00c263c5d

SHA256
039ec47b1e431e2555dc8da6bff06a3c78b242c01c9553286128c0f94d4c55ff

SHA512
a3049b32be6a7e8a4b1522d32df205e6433fa81fd540893ca917eb6ca33f51f79ec5571f144727bf145f00a457b4705942f0c55c85ddad96a227465345fc866f

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

Filesize
404B

MD5
c0205f7bcd5748de6e416482c906fe20

SHA1
404342fdb63a019df2c7a4a56bd9557c918e1685

SHA256
e9ff5877ddd100bb45e5705722ec728b1ae6b6e44b84ede30ae2287f6dc54dd7

SHA512
cbc1de178a0a62835bffc3c809eb4cbf79dd9d3c6c4cf3ee08ef0369286140fc4ede9b8b87ab8dcbe5c36a651fa6b77fdbe882f9f7f74def02536b4635b5818b

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\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/836-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/836-5-0x0000000000590000-0x000000000059F000-memory.dmp

Filesize
60KB

Download
memory/836-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2764-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2764-14-0x0000000000570000-0x0000000000571000-memory.dmp

Filesize
4KB

Download
memory/2764-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4860-0-0x0000000010000000-0x0000000010039000-memory.dmp

Filesize
228KB

Download