ramnit | 66877fa63f7c660b22dd48ccb953bdb9855568957c15a24073731c911b511926

Analysis

max time kernel
92s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-11-2024 02:32

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General

Target

66877fa63f7c660b22dd48ccb953bdb9855568957c15a24073731c911b511926N.dll
Size

4.8MB
MD5

d6a4c7403c2dc7ac47c03ebecf7ed390
SHA1

3d760ac11c1ade04a3b5231331939cdc5d780c4f
SHA256

66877fa63f7c660b22dd48ccb953bdb9855568957c15a24073731c911b511926
SHA512

111557c2bdb96ac536a255b97b2a721f9a14acccb9feda585d4cfa5332c625e74a7660b470b380d24bb42812f66851f1821250e6429ff4480538e881981314ee
SSDEEP

98304:raTiZ7qe+aOKvp3QZ6/HbS9FugmTw3gvhiWaOuBuJ0Ato4z/ukz:raTiZ7qfRmp3QZ6/+9Fu/v0AmWhz

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
2464	rundll32mgr.exe
3408	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/2464-14-0x0000000000400000-0x0000000000436000-memory.dmp	upx
behavioral2/memory/2464-12-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2464-11-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2464-10-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3408-29-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2464-15-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2464-8-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2464-7-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2464-6-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2464-5-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3408-37-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3408-39-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px828E.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
3864	1412	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	WaterMark.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32mgr.exe

Modifies Internet Explorer settings 1 TTPs 33 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31143083"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31143083"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1101578326"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31143083"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1101578326"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1100015422"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "438143751"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1100015422"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{6D1DD2E5-A09E-11EF-B319-6AACA39217E0} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31143083"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe
3408	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3408	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2500	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2500	iexplore.exe
2500	iexplore.exe
4304	IEXPLORE.EXE
4304	IEXPLORE.EXE
4304	IEXPLORE.EXE
4304	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2464	rundll32mgr.exe
3408	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 788	2432	rundll32.exe	83
PID 2432 wrote to memory of 788	2432	rundll32.exe	83
PID 2432 wrote to memory of 788	2432	rundll32.exe	83
PID 788 wrote to memory of 2464	788	rundll32.exe	84
PID 788 wrote to memory of 2464	788	rundll32.exe	84
PID 788 wrote to memory of 2464	788	rundll32.exe	84
PID 2464 wrote to memory of 3408	2464	rundll32mgr.exe	85
PID 2464 wrote to memory of 3408	2464	rundll32mgr.exe	85
PID 2464 wrote to memory of 3408	2464	rundll32mgr.exe	85
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 1412	3408	WaterMark.exe	86
PID 3408 wrote to memory of 2500	3408	WaterMark.exe	96
PID 3408 wrote to memory of 2500	3408	WaterMark.exe	96
PID 3408 wrote to memory of 4840	3408	WaterMark.exe	97
PID 3408 wrote to memory of 4840	3408	WaterMark.exe	97
PID 2500 wrote to memory of 4304	2500	iexplore.exe	99
PID 2500 wrote to memory of 4304	2500	iexplore.exe	99
PID 2500 wrote to memory of 4304	2500	iexplore.exe	99

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\66877fa63f7c660b22dd48ccb953bdb9855568957c15a24073731c911b511926N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\66877fa63f7c660b22dd48ccb953bdb9855568957c15a24073731c911b511926N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:788
- - 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:2464
  - - 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:3408
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:1412
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1412 -s 204
        6⤵
        Program crash
        
        PID:3864
    - - 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:2500
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2500 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4304
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1412 -ip 1412
1⤵
PID:4560

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
ea6f4f772f0c592e24ca8ec502eac7ba

SHA1
fe49ef754f38cc6f22d79f702e087263c7ce5ed3

SHA256
c66e4655524d70901b0e460076e5088f0033d09c7c8f175e05221569cf572e13

SHA512
070d13ecefac10740d746931329d32f12f69f70442e86ab955dff74a3b4cee16beb0cefd124ba97d39deaa67c7442022332d2e2eb30e416d8350a428da9d6f60

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

Filesize
404B

MD5
9b803c5d5538ac8630db0b0aed4b6b62

SHA1
15e965fac07554341e5d3b4edac9dd020b413244

SHA256
31ce556536a7680d301d730c47bb7d207f43cc2637de4746e2966971859ad289

SHA512
fd0f1ffbf4b9e9c83089e30536afde50a0602716809d30b461bcbf8e625c8faae3a49e9765b318e7e0bae306978b2d7e8f2c7ab96ffb5d93f918f0fbbe7994ba

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver625.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8R55UT9S\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
112KB

MD5
03c26463753b18d7f68981ea0d0e737f

SHA1
98d36db16cc298cc3ca6850557cb1573cd22c272

SHA256
9f9304bc206947b1b6790d6c3498dd5293816d221133d5bfe5501bf355758207

SHA512
807d38377dbb4131986cba3464ff77752521b4bac1e4cef0cbee0bc365fe485e8677e122a7c3a185627b38e198330372ed031a22d6f8483c618b55dcde115ebe

Download Submit
memory/788-4-0x0000000006000000-0x00000000064CE000-memory.dmp

Filesize
4.8MB

Download
memory/1412-34-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download
memory/1412-33-0x00000000005C0000-0x00000000005C1000-memory.dmp

Filesize
4KB

Download
memory/2464-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-13-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download
memory/2464-14-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/2464-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2464-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3408-21-0x0000000000400000-0x0000000000436000-memory.dmp

Filesize
216KB

Download
memory/3408-36-0x0000000077652000-0x0000000077653000-memory.dmp

Filesize
4KB

Download
memory/3408-37-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3408-39-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3408-35-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/3408-28-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/3408-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3408-30-0x0000000077652000-0x0000000077653000-memory.dmp

Filesize
4KB

Download