ramnit | c45541f52018b31f0801433d725b9ad0ebbf9e118b331f7b8b04fd8a861e306b

Analysis

max time kernel
94s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-11-2024 00:45

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General

Target

c45541f52018b31f0801433d725b9ad0ebbf9e118b331f7b8b04fd8a861e306bN.dll
Size

176KB
MD5

a62aad50c56e3bff4642322e1fd24210
SHA1

3d37f206d0c8a1dec25579ca2a27155e1bafbb6d
SHA256

c45541f52018b31f0801433d725b9ad0ebbf9e118b331f7b8b04fd8a861e306b
SHA512

bffeb875deee7f478d0c85f7740b301b569423b9acae34ef26a03d862caedd7a5550d8c3e3a7f267fbe3f84d7190cfa9516a2e354a774797acf9d11d195ec4bd
SSDEEP

3072:pgKKuiX63bw5dNjDh8pWVgTlFIYnXrWXQOTcowGqdCrfLXGuHH:iKZp3KNjVGvCXJcJRQfCiH

Score

10^/10

ramnit banker discovery 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
Ramnit family
ramnit

Executes dropped EXE 2 IoCs

pid	Process
3732	rundll32mgr.exe
4836	WaterMark.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3732-10-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-16-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-14-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-13-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-11-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-9-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3732-8-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4836-28-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4836-29-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4836-37-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4836-38-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4836-40-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px787C.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1724	3224	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WaterMark.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE

Modifies Internet Explorer settings 1 TTPs 33 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142666"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{2CAF87AE-9EFD-11EF-BEF1-FE5A08828E79} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\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-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142666"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "20920485"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "19358325"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142666"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142666"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437964543"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "20920485"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "19358325"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe
4836	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4836	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3780	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3780	iexplore.exe
3780	iexplore.exe
2820	IEXPLORE.EXE
2820	IEXPLORE.EXE
2820	IEXPLORE.EXE
2820	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
3732	rundll32mgr.exe
4836	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 884 wrote to memory of 3664	884	rundll32.exe	83
PID 884 wrote to memory of 3664	884	rundll32.exe	83
PID 884 wrote to memory of 3664	884	rundll32.exe	83
PID 3664 wrote to memory of 3732	3664	rundll32.exe	84
PID 3664 wrote to memory of 3732	3664	rundll32.exe	84
PID 3664 wrote to memory of 3732	3664	rundll32.exe	84
PID 3732 wrote to memory of 4836	3732	rundll32mgr.exe	85
PID 3732 wrote to memory of 4836	3732	rundll32mgr.exe	85
PID 3732 wrote to memory of 4836	3732	rundll32mgr.exe	85
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3224	4836	WaterMark.exe	86
PID 4836 wrote to memory of 3780	4836	WaterMark.exe	95
PID 4836 wrote to memory of 3780	4836	WaterMark.exe	95
PID 4836 wrote to memory of 2196	4836	WaterMark.exe	96
PID 4836 wrote to memory of 2196	4836	WaterMark.exe	96
PID 3780 wrote to memory of 2820	3780	iexplore.exe	97
PID 3780 wrote to memory of 2820	3780	iexplore.exe	97
PID 3780 wrote to memory of 2820	3780	iexplore.exe	97

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c45541f52018b31f0801433d725b9ad0ebbf9e118b331f7b8b04fd8a861e306bN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:884
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c45541f52018b31f0801433d725b9ad0ebbf9e118b331f7b8b04fd8a861e306bN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3664
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:3732
  - - C:\Program Files (x86)\Microsoft\WaterMark.exe
      "C:\Program Files (x86)\Microsoft\WaterMark.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of UnmapMainImage
      Suspicious use of WriteProcessMemory
      PID:4836
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:3224
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3224 -s 204
        6⤵
        Program crash
        
        PID:1724
    - - 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:3780
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3780 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2820
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:2196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3224 -ip 3224
1⤵
PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

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
042619486a0f512d0313c7b4fa6c9756

SHA1
9a3f09247b4b03933f23331b4f0207672c93e02a

SHA256
a231a95c194f54c33eef59babf53d979f0342fbc68bc52dbb524887fd378418d

SHA512
4b2b32d754d116b0609ca43b9ff54ad72c9e22ddbd617b5c94586a219c297c13823c0c2812937db6b2181382176bba46b2f3d37b4b29ae6f171e01ada216c257

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

Filesize
404B

MD5
c525744fc8b3ec560a26e3105d4c68db

SHA1
9f25f286a210d7c4c24d932f07f61a2b770170a6

SHA256
52337651e03350b5f67f44cf6889cc8947acedd7f39b1f2c50b80993cedff70a

SHA512
1d1bc1cd971c98d2f8842617a1710a28ebe202c9a232ddb63000c77575bcef94e2ef1bdc2d4f2c0b543b6808ed160e8694e96afca3d5fc1f41f27ed27c6ce6db

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verFC32.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0GUUC90F\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
59KB

MD5
0e0f0ae845d89c22bb6385f64a6b85fd

SHA1
0f3f1e7f18ab81572c5ce938d3880d4a5d7100ac

SHA256
5a5b85c582d5d4b3b912ee6789babebf8ae6d87330d0d33d87274841952899dd

SHA512
baec989a6329a2a60d954e83279fd57ba2000f8ed79e7a02d145bf44a5bffcd9a831c63f4b7d44e40c51e40b1dfbe72c5cebac04d0ce7b2295e3fd191b122350

Download Submit
memory/3224-33-0x00000000007E0000-0x00000000007E1000-memory.dmp

Filesize
4KB

Download
memory/3224-34-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/3664-1-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/3732-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-7-0x00000000008A0000-0x00000000008A1000-memory.dmp

Filesize
4KB

Download
memory/3732-6-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/3732-5-0x0000000000401000-0x0000000000405000-memory.dmp

Filesize
16KB

Download
memory/3732-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-21-0x0000000000401000-0x0000000000405000-memory.dmp

Filesize
16KB

Download
memory/3732-16-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3732-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4836-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4836-36-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/4836-37-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4836-38-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4836-40-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4836-35-0x0000000077B72000-0x0000000077B73000-memory.dmp

Filesize
4KB

Download
memory/4836-32-0x0000000077B72000-0x0000000077B73000-memory.dmp

Filesize
4KB

Download
memory/4836-30-0x0000000000060000-0x0000000000061000-memory.dmp

Filesize
4KB

Download
memory/4836-28-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download