ramnit | e51bac091a171091098a61a2706c410ff7896d04f1f82bcec6c8b42447544805

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:50

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General

Target

$PLUGINSDIR/nsRandom.dll
Size

77KB
MD5

d86b2899f423931131b696ff659aa7ed
SHA1

007ca98f5d7921fe26fb9b8bd8a822dd5ae09ed6
SHA256

8935cba8e9b276daa357a809e0eca3bebf3fdc6d0d3466ab37fb2cbbfacd3a94
SHA512

9a4437ab484e4e22597c642d21b0107a063a208a582df3a5bf276466ad8d0ba9aeebac6de8dcf1372939984bb187d58e94c799918cfbe80e85c958bf0a537fc7
SSDEEP

1536:/lKXi95r2UwOpUtoqoQvfDrghNT+2w8mbJ1/NfSttVx:sgr2eGoqVvbaNXubJ1JI

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

4208 rundll32Srv.exe
5116 DesktopLayer.exe

pid	process
4208	rundll32Srv.exe
5116	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral16/memory/4856-1-0x0000000000400000-0x0000000000421000-memory.dmp	upx
C:\Windows\SysWOW64\rundll32Srv.exe	upx
behavioral16/memory/4208-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral16/memory/4208-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral16/memory/5116-12-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral16/memory/5116-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral16/memory/5116-16-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral16/memory/4856-19-0x0000000000400000-0x0000000000421000-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\px4A28.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

2208 4856 WerFault.exe rundll32.exe

pid	pid_target	process	target process
2208	4856	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-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "697238793"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31108284"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "423197654"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31108284"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "690833087"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "690833087"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31108284"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{54940FED-18AF-11EF-A2D1-4ADE6ABEB422} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
5116	DesktopLayer.exe
5116	DesktopLayer.exe
5116	DesktopLayer.exe
5116	DesktopLayer.exe
5116	DesktopLayer.exe
5116	DesktopLayer.exe
5116	DesktopLayer.exe
5116	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

2560 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

2560 iexplore.exe
2560 iexplore.exe
5012 IEXPLORE.EXE
5012 IEXPLORE.EXE
5012 IEXPLORE.EXE
5012 IEXPLORE.EXE

pid	process
2560	iexplore.exe

pid	process
2560	iexplore.exe
2560	iexplore.exe
5012	IEXPLORE.EXE
5012	IEXPLORE.EXE
5012	IEXPLORE.EXE
5012	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 1320 wrote to memory of 4856	1320	rundll32.exe	rundll32.exe
PID 1320 wrote to memory of 4856	1320	rundll32.exe	rundll32.exe
PID 1320 wrote to memory of 4856	1320	rundll32.exe	rundll32.exe
PID 4856 wrote to memory of 4208	4856	rundll32.exe	rundll32Srv.exe
PID 4856 wrote to memory of 4208	4856	rundll32.exe	rundll32Srv.exe
PID 4856 wrote to memory of 4208	4856	rundll32.exe	rundll32Srv.exe
PID 4208 wrote to memory of 5116	4208	rundll32Srv.exe	DesktopLayer.exe
PID 4208 wrote to memory of 5116	4208	rundll32Srv.exe	DesktopLayer.exe
PID 4208 wrote to memory of 5116	4208	rundll32Srv.exe	DesktopLayer.exe
PID 5116 wrote to memory of 2560	5116	DesktopLayer.exe	iexplore.exe
PID 5116 wrote to memory of 2560	5116	DesktopLayer.exe	iexplore.exe
PID 2560 wrote to memory of 5012	2560	iexplore.exe	IEXPLORE.EXE
PID 2560 wrote to memory of 5012	2560	iexplore.exe	IEXPLORE.EXE
PID 2560 wrote to memory of 5012	2560	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsRandom.dll,#1
2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4856

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:4208

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:5116

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:2560

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2560 CREDAT:17410 /prefetch:2
6⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:5012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 628
3⤵
- Program crash
PID:2208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4856 -ip 4856
1⤵
PID:364

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:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize
471B

MD5
01409a92b179c99711ea8c28d307d0c4

SHA1
a9cc2b0c5727e2af14819f3908c4693f8e891392

SHA256
3034962a4c308ef5e66a2de7faf1ed2439b7e59086a8c07ad59ce3669b8ee01c

SHA512
8e86173a54d253f3e05443c603222b9018d63a3fb8e3a26b2b5602c083c07b117d5c53ede08056b6aa4503380562444c6704de32b2cce76f146478616b7278c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Filesize
404B

MD5
be4d6c34a2fcc48672c1c18ca8b32146

SHA1
d79ac48012a0867e696f9a213dd964f329b2d750

SHA256
1bfcd8feb6a8cb3b68b5a05fc6fa2812dff8783fdfb6cb478396e2c1e1876895

SHA512
1ef0d076592dce1cd2cd649819cb74725a52424e3235a438ff96446d0cd2385b7a363e86c553a1f530fdf1eec0be44c0aed724e74a567212e1aa69d68278a78a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\I3C6LG3F\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/4208-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4208-6-0x0000000000590000-0x000000000059F000-memory.dmp

Filesize
60KB

Download
memory/4208-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4856-19-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4856-1-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/5116-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5116-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5116-14-0x0000000000450000-0x0000000000451000-memory.dmp

Filesize
4KB

Download
memory/5116-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

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