ramnit | 71f110f2d6d5e36c9febf465f50ba6c98ce052c2b6981d3a353155840c1e2c1a

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 01:59

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General

Target
71f110f2d6d5e36c9febf465f50ba6c98ce052c2b6981d3a353155840c1e2c1a.dll
Size 260KB
Sample240609-ceefxabh8z
SHA256 71f110f2d6d5e36c9febf465f50ba6c98ce052c2b6981d3a353155840c1e2c1a
MD5 459b68e06ba1a22febd9cce064aafe3a
SHA1 1191b301579d50816a8d46039972fcff226509be
SHA512 9829280c9f51662718521e19e1d9cff83312f4f317e0a02f5e50f664d9fe57f1a962c7708ff6c3d66ad8d6218f91fa8d633c918c72ef7099b59ca10d8d50caf5
SSDEEP 6144:CJFOPSZCBpkeYi6HAApwfN545PTygoorSP:CJpZQ4iTKPtr+
MD5 SHA1 SHA512 SSDEEP

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

UPX dump on OEP (original entry point) 10 IoCs

resource	yara_rule
behavioral2/memory/4916-1-0x0000000010000000-0x0000000010042000-memory.dmp	UPX
behavioral2/files/0x0008000000023402-3.dat	UPX
behavioral2/memory/3948-4-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/3948-7-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/860-12-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/860-14-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/860-17-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/860-13-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/860-18-0x0000000000400000-0x000000000042E000-memory.dmp	UPX
behavioral2/memory/4916-20-0x0000000010000000-0x0000000010042000-memory.dmp	UPX

Executes dropped EXE 2 IoCs

pid	Process
3948	rundll32Srv.exe
860	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023402-3.dat	upx
behavioral2/memory/3948-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3948-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/860-12-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/860-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/860-17-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/860-13-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/860-18-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

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

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px4083.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

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3658290304"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{05763C0F-2604-11EF-BCA5-62BC6A84A035} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31111696"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3655321699"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3655321699"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31111696"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "424663393"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31111696"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
860	DesktopLayer.exe
860	DesktopLayer.exe
860	DesktopLayer.exe
860	DesktopLayer.exe
860	DesktopLayer.exe
860	DesktopLayer.exe
860	DesktopLayer.exe
860	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4224	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4224	iexplore.exe
4224	iexplore.exe
3196	IEXPLORE.EXE
3196	IEXPLORE.EXE
3196	IEXPLORE.EXE
3196	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3320 wrote to memory of 4916	3320	rundll32.exe	82
PID 3320 wrote to memory of 4916	3320	rundll32.exe	82
PID 3320 wrote to memory of 4916	3320	rundll32.exe	82
PID 4916 wrote to memory of 3948	4916	rundll32.exe	83
PID 4916 wrote to memory of 3948	4916	rundll32.exe	83
PID 4916 wrote to memory of 3948	4916	rundll32.exe	83
PID 3948 wrote to memory of 860	3948	rundll32Srv.exe	84
PID 3948 wrote to memory of 860	3948	rundll32Srv.exe	84
PID 3948 wrote to memory of 860	3948	rundll32Srv.exe	84
PID 860 wrote to memory of 4224	860	DesktopLayer.exe	85
PID 860 wrote to memory of 4224	860	DesktopLayer.exe	85
PID 4224 wrote to memory of 3196	4224	iexplore.exe	86
PID 4224 wrote to memory of 3196	4224	iexplore.exe	86
PID 4224 wrote to memory of 3196	4224	iexplore.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\71f110f2d6d5e36c9febf465f50ba6c98ce052c2b6981d3a353155840c1e2c1a.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3320
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\71f110f2d6d5e36c9febf465f50ba6c98ce052c2b6981d3a353155840c1e2c1a.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4916
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:3948
  - - 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:860
    - - 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:4224
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4224 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 471B
SHA256 1bfff9beefb632ccbcd61cc1db292cdbcdd5c58a7dba56856958b3a3ab4cc04e
MD5 2e4c622928c87b27dbe1fce59908903e
SHA1 d9523243f087a1977c8688e4809a7afe4ce602e0
SHA512 b8abf9937082e8157e3bb6819d9896391f909851dfd2ab46abd6c53f9c29a2c4336ed7103e58f4c7a9de5401fd77375853f3301e1935a201170370daba18f334
MD5 SHA1 SHA512

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7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 404B
SHA256 e02e37f8e72c98e6a1c46bf3a11b33d61653a76f734439c5dd964ff0d2ae0ac1
MD5 5c942eb26d92eabd002e3e2e8cb9e456
SHA1 5c05a77222ee358cdc2a4bd9285a983c58484bfc
SHA512 602376fc077df8c23fb83218d7e666ab23705cf0b11dfd83335553b7c6fb721e68b80b0c041d466b619ad25dfe93eed04cec2d1cca3101da510fa0c3d01b7bf3
MD5 SHA1 SHA512

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suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\EO73ZF47\suggestions[1].en-US
Size 17KB
SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
MD5 5a34cb996293fde2cb7a4ac89587393a
SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
MD5 SHA1 SHA512 SSDEEP

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rundll32Srv.exe

Path C:\Windows\SysWOW64\rundll32Srv.exe
Size 55KB
SHA256 fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
MD5 ff5e1f27193ce51eec318714ef038bef
SHA1 b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA512 c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
SSDEEP 1536:Q+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzE:bROzoTq0+RO7IwnY
MD5 SHA1 SHA512 SSDEEP

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memory/860-13-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/860-12-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/860-14-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/860-17-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/860-16-0x0000000000490000-0x0000000000491000-memory.dmp

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memory/860-18-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/3948-7-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/3948-6-0x00000000004C0000-0x00000000004CF000-memory.dmp

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memory/3948-4-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4916-1-0x0000000010000000-0x0000000010042000-memory.dmp

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memory/4916-20-0x0000000010000000-0x0000000010042000-memory.dmp

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