ramnit | af8ff94957bef83b68e4047ee8c8dde2ddc81b785bfe345cf8c88ed7dcd09e5b

Analysis

max time kernel
77s
max time network
91s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13-06-2024 09:39

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General

Target

$PLUGINSDIR/System.dll
Size

67KB
MD5

bd05feb8825b15dcdd9100d478f04e17
SHA1

a67d82be96a439ce1c5400740da5c528f7f550e0
SHA256

4972cca9555b7e5dcb6feef63605305193835ea63f343df78902bbcd432ba496
SHA512

67f1894c79bbcef4c7fedd91e33ec48617d5d34c2d9ebcd700c935b7fe1b08971d4c68a71d5281abac97e62d6b8c8f318cc6ff15ea210ddcf21ff04a9e5a7f95
SSDEEP

1536:2IfbmtOpUtoqoQvfDrghNT+2w8mbJ1/NfSttVx:bfi4GoqVvbaNXubJ1JI

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
Executes dropped EXE 2 IoCs

Processes:

rundll32Srv.exeDesktopLayer.exe

pid process

4588 rundll32Srv.exe
3388 DesktopLayer.exe

pid	process
4588	rundll32Srv.exe
3388	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
C:\Windows\SysWOW64\rundll32Srv.exe	upx
behavioral10/memory/4588-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/4588-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/3388-10-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/3388-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral10/memory/3388-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe

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

Drops file in Program Files directory 3 IoCs

Processes:

rundll32Srv.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft\px6002.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

Processes:

WerFault.exe

pid pid_target process target process

3472 4944 WerFault.exe rundll32.exe

pid	pid_target	process	target process
3472	4944	WerFault.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 15 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\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 (int)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "424433478"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{E6A6E055-2968-11EF-92F1-62C35996CAED} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
3388	DesktopLayer.exe
3388	DesktopLayer.exe
3388	DesktopLayer.exe
3388	DesktopLayer.exe
3388	DesktopLayer.exe
3388	DesktopLayer.exe
3388	DesktopLayer.exe
3388	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

2788 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

2788 iexplore.exe
2788 iexplore.exe
3364 IEXPLORE.EXE
3364 IEXPLORE.EXE
3364 IEXPLORE.EXE
3364 IEXPLORE.EXE

pid	process
2788	iexplore.exe

pid	process
2788	iexplore.exe
2788	iexplore.exe
3364	IEXPLORE.EXE
3364	IEXPLORE.EXE
3364	IEXPLORE.EXE
3364	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 4508 wrote to memory of 4944	4508	rundll32.exe	rundll32.exe
PID 4508 wrote to memory of 4944	4508	rundll32.exe	rundll32.exe
PID 4508 wrote to memory of 4944	4508	rundll32.exe	rundll32.exe
PID 4944 wrote to memory of 4588	4944	rundll32.exe	rundll32Srv.exe
PID 4944 wrote to memory of 4588	4944	rundll32.exe	rundll32Srv.exe
PID 4944 wrote to memory of 4588	4944	rundll32.exe	rundll32Srv.exe
PID 4588 wrote to memory of 3388	4588	rundll32Srv.exe	DesktopLayer.exe
PID 4588 wrote to memory of 3388	4588	rundll32Srv.exe	DesktopLayer.exe
PID 4588 wrote to memory of 3388	4588	rundll32Srv.exe	DesktopLayer.exe
PID 3388 wrote to memory of 2788	3388	DesktopLayer.exe	iexplore.exe
PID 3388 wrote to memory of 2788	3388	DesktopLayer.exe	iexplore.exe
PID 2788 wrote to memory of 3364	2788	iexplore.exe	IEXPLORE.EXE
PID 2788 wrote to memory of 3364	2788	iexplore.exe	IEXPLORE.EXE
PID 2788 wrote to memory of 3364	2788	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4508

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\System.dll,#1
2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4944

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:4588

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:3388

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:2788

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2788 CREDAT:17410 /prefetch:2
6⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:3364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4944 -s 620
3⤵
- Program crash
PID:3472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4944 -ip 4944
1⤵
PID:4832

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Windows\SysWOW64\rundll32Srv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/3388-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3388-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3388-13-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/3388-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4588-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4588-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4944-1-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download
memory/4944-17-0x0000000010000000-0x0000000010015000-memory.dmp

Filesize
84KB

Download