ramnit | 1dff748cbad8d2b8ec94f26a90f36ff1ace5cc273c95e2aa50aa704361672f84

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28-05-2024 21:53

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General

Target

$PLUGINSDIR/MyNsisExtend.dll
Size

596KB
MD5

37e4e1ab9aee0596c2fa5888357a63b0
SHA1

a5dba8c0a1bd936dca2b6a81f2dc9a3005f1a2b6
SHA256

ff4b245fea98cedd881ca102468623a449a0b40df0c557dd8a6ea32e788d56fe
SHA512

5cbab2872683079c6cc09423a2baf7107b5ac5731f336cd237fa93a4a4ee53a127963dc0ec0dbc6168b9b3d2c3a881c7663ce4ecd84d964628dd566395d49bb3
SSDEEP

12288:1QXznhWxifqPG8yDAay0BQeMrtQW27ZJ6ObWTE5lqtmsVsIdj:1QXznYybPJnWTE5lqwsKG

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

3096 rundll32Srv.exe
5112 DesktopLayer.exe

pid	process
3096	rundll32Srv.exe
5112	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
behavioral6/memory/3096-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral6/memory/3096-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral6/memory/5112-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral6/memory/5112-16-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral6/memory/5112-12-0x0000000000400000-0x000000000042E000-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\px5A84.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

1968 388 WerFault.exe rundll32.exe

pid	pid_target	process	target process
1968	388	WerFault.exe	rundll32.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-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{C32072EA-1D3C-11EF-9519-FEF50CB5D633} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31109449"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2542871687"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31109449"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2542715829"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31109449"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2548028474"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "423698203"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
5112	DesktopLayer.exe
5112	DesktopLayer.exe
5112	DesktopLayer.exe
5112	DesktopLayer.exe
5112	DesktopLayer.exe
5112	DesktopLayer.exe
5112	DesktopLayer.exe
5112	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1124 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1124 iexplore.exe
1124 iexplore.exe
1688 IEXPLORE.EXE
1688 IEXPLORE.EXE
1688 IEXPLORE.EXE
1688 IEXPLORE.EXE

pid	process
1124	iexplore.exe

pid	process
1124	iexplore.exe
1124	iexplore.exe
1688	IEXPLORE.EXE
1688	IEXPLORE.EXE
1688	IEXPLORE.EXE
1688	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 3652 wrote to memory of 388	3652	rundll32.exe	rundll32.exe
PID 3652 wrote to memory of 388	3652	rundll32.exe	rundll32.exe
PID 3652 wrote to memory of 388	3652	rundll32.exe	rundll32.exe
PID 388 wrote to memory of 3096	388	rundll32.exe	rundll32Srv.exe
PID 388 wrote to memory of 3096	388	rundll32.exe	rundll32Srv.exe
PID 388 wrote to memory of 3096	388	rundll32.exe	rundll32Srv.exe
PID 3096 wrote to memory of 5112	3096	rundll32Srv.exe	DesktopLayer.exe
PID 3096 wrote to memory of 5112	3096	rundll32Srv.exe	DesktopLayer.exe
PID 3096 wrote to memory of 5112	3096	rundll32Srv.exe	DesktopLayer.exe
PID 5112 wrote to memory of 1124	5112	DesktopLayer.exe	iexplore.exe
PID 5112 wrote to memory of 1124	5112	DesktopLayer.exe	iexplore.exe
PID 1124 wrote to memory of 1688	1124	iexplore.exe	IEXPLORE.EXE
PID 1124 wrote to memory of 1688	1124	iexplore.exe	IEXPLORE.EXE
PID 1124 wrote to memory of 1688	1124	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\MyNsisExtend.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\MyNsisExtend.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:388
- - 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:3096
  - - 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:5112
    - - 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:1124
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1124 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1688
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 388 -s 652
    3⤵
    - Program crash
    PID:1968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 388 -ip 388
1⤵
PID:4144

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

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
c04af526ef1338b7a95090a096fb836f

SHA1
9872580735c19384b9eab5baf168e288862dd8aa

SHA256
3839653c6cf51672c67c89c5b565c5474aa031c98746cd89c5763995a61b3d30

SHA512
46c4c9d951074ff2fdda76283306e5ae12fe1829bb24ec8ed827785ff1967075c5da6cd21b447adf69e2af663b38cab5a478e54213f46e84a7f329c1eeebe40d

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

Filesize
404B

MD5
ad9cd6cbc93c9513aa7747ec36d61e7f

SHA1
6c893131e19477580d46aa8e06206a0dfad6752c

SHA256
f3b1f0b3ba00e2a4c5d37022d1c6077a9de7aaad6d41d318758eb82e148faee6

SHA512
acbc3887b81a4b4e37eda45a7c9054a797694170d9e5bef3916e7784f304bdc4eedcc9e03b7f78039fe9307734d26606c14240bf3e1b316971b1d78e58181d9b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\2IX84YPE\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/388-18-0x0000000010000000-0x000000001009A000-memory.dmp

Filesize
616KB

Download
memory/388-1-0x0000000010000000-0x000000001009A000-memory.dmp

Filesize
616KB

Download
memory/3096-6-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3096-5-0x0000000000590000-0x000000000059F000-memory.dmp

Filesize
60KB

Download
memory/3096-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5112-15-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/5112-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5112-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5112-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download