ramnit | 6ace4ddf63aa8d54b60f01e6aaa4638c27b49dfc64a707e35c004eee09de1c7f

Analysis

max time kernel
115s
max time network
161s
platform
windows7_x64
resource
win7-20220414-en
submitted
24-05-2022 17:41

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General

Target

范伟打天下招财宝辅助/dm.dll
Size

860KB
MD5

0124de17de85c71d43e062b5c36501a4
SHA1

fae128fd4743ce22b008acaf4ca0da0bc34182bd
SHA256

94811d833c7af1de6247ef7de86518ddb74b944f597d62a76b2d73dba7e37d10
SHA512

6e7f6605c202bb865f7c095d1e8f3db84cef78fcc9bf69ad994c83545a92c96f870aea432b19b0a979d08274696fc90168036d83e532fc42d7ebf08e6c3dfdc3

Score

10^/10

ramnit banker spyware stealer trojan worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
Executes dropped EXE 2 IoCs

Processes:

regsvr32Srv.exeDesktopLayer.exe

pid process

1200 regsvr32Srv.exe
2024 DesktopLayer.exe
Loads dropped DLL 2 IoCs

Processes:

regsvr32.exeregsvr32Srv.exe

pid process

2036 regsvr32.exe
1200 regsvr32Srv.exe
Drops file in System32 directory 1 IoCs

Processes:

regsvr32.exe

description ioc process

File created C:\Windows\SysWOW64\regsvr32Srv.exe regsvr32.exe

pid	process
1200	regsvr32Srv.exe
2024	DesktopLayer.exe

pid	process
2036	regsvr32.exe
1200	regsvr32Srv.exe

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

Drops file in Program Files directory 3 IoCs

Processes:

regsvr32Srv.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px71C7.tmp	regsvr32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe

Modifies Internet Explorer settings 1 TTPs 23 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{D4457701-DB9F-11EC-B0ED-C2F2D41BD72F} = "0"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

DesktopLayer.exe

pid process

2024 DesktopLayer.exe
2024 DesktopLayer.exe
2024 DesktopLayer.exe
2024 DesktopLayer.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1996 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1996 iexplore.exe
1996 iexplore.exe
612 IEXPLORE.EXE
612 IEXPLORE.EXE
612 IEXPLORE.EXE
612 IEXPLORE.EXE

pid	process
2024	DesktopLayer.exe
2024	DesktopLayer.exe
2024	DesktopLayer.exe
2024	DesktopLayer.exe

pid	process
1996	iexplore.exe

pid	process
1996	iexplore.exe
1996	iexplore.exe
612	IEXPLORE.EXE
612	IEXPLORE.EXE
612	IEXPLORE.EXE
612	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

regsvr32.exeregsvr32.exeregsvr32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 1660 wrote to memory of 2036	1660	regsvr32.exe	regsvr32.exe
PID 1660 wrote to memory of 2036	1660	regsvr32.exe	regsvr32.exe
PID 1660 wrote to memory of 2036	1660	regsvr32.exe	regsvr32.exe
PID 1660 wrote to memory of 2036	1660	regsvr32.exe	regsvr32.exe
PID 1660 wrote to memory of 2036	1660	regsvr32.exe	regsvr32.exe
PID 1660 wrote to memory of 2036	1660	regsvr32.exe	regsvr32.exe
PID 1660 wrote to memory of 2036	1660	regsvr32.exe	regsvr32.exe
PID 2036 wrote to memory of 1200	2036	regsvr32.exe	regsvr32Srv.exe
PID 2036 wrote to memory of 1200	2036	regsvr32.exe	regsvr32Srv.exe
PID 2036 wrote to memory of 1200	2036	regsvr32.exe	regsvr32Srv.exe
PID 2036 wrote to memory of 1200	2036	regsvr32.exe	regsvr32Srv.exe
PID 1200 wrote to memory of 2024	1200	regsvr32Srv.exe	DesktopLayer.exe
PID 1200 wrote to memory of 2024	1200	regsvr32Srv.exe	DesktopLayer.exe
PID 1200 wrote to memory of 2024	1200	regsvr32Srv.exe	DesktopLayer.exe
PID 1200 wrote to memory of 2024	1200	regsvr32Srv.exe	DesktopLayer.exe
PID 2024 wrote to memory of 1996	2024	DesktopLayer.exe	iexplore.exe
PID 2024 wrote to memory of 1996	2024	DesktopLayer.exe	iexplore.exe
PID 2024 wrote to memory of 1996	2024	DesktopLayer.exe	iexplore.exe
PID 2024 wrote to memory of 1996	2024	DesktopLayer.exe	iexplore.exe
PID 1996 wrote to memory of 612	1996	iexplore.exe	IEXPLORE.EXE
PID 1996 wrote to memory of 612	1996	iexplore.exe	IEXPLORE.EXE
PID 1996 wrote to memory of 612	1996	iexplore.exe	IEXPLORE.EXE
PID 1996 wrote to memory of 612	1996	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\范伟打天下招财宝辅助\dm.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\范伟打天下招财宝辅助\dm.dll
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1200

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1996 CREDAT:275457 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:612

C:\Program Files (x86)\Microsoft\DesktopLayer.exe
"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2024

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

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C:\Program Files (x86)\Microsoft\DesktopLayer.exe

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\WZPCPCKO.txt

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C:\Windows\SysWOW64\regsvr32Srv.exe

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C:\Windows\SysWOW64\regsvr32Srv.exe

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\Program Files (x86)\Microsoft\DesktopLayer.exe

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\Windows\SysWOW64\regsvr32Srv.exe

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memory/1200-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1200-58-0x0000000000000000-mapping.dmp

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memory/1660-54-0x000007FEFC3E1000-0x000007FEFC3E3000-memory.dmp

Filesize
8KB

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memory/2024-63-0x0000000000000000-mapping.dmp

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memory/2024-68-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

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memory/2036-56-0x0000000075C51000-0x0000000075C53000-memory.dmp

Filesize
8KB

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memory/2036-55-0x0000000000000000-mapping.dmp

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