ramnit | ac494205f38dc31a976d8d5e5e055a27e634625b9cf95d046ad0bf18f9a443b2

Analysis

max time kernel
94s
max time network
115s
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 00:32

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General

Target

ac494205f38dc31a976d8d5e5e055a27e634625b9cf95d046ad0bf18f9a443b2N.dll
Size

140KB
MD5

81bbdaf7d1a9102e7dc6b07c99aae9a0
SHA1

f47d1b65a127de229f283e5d4df17b4557b08682
SHA256

ac494205f38dc31a976d8d5e5e055a27e634625b9cf95d046ad0bf18f9a443b2
SHA512

04bf1bb3aedc12900f00736f56dbe647407b1b375413cfebd8b449c9c02bc05ccd74e6c391e5ddc3d405fb07be56f2dacc7992aa202deed3c01faaca6845c3dd
SSDEEP

3072:68t1Ohg3RWQZh5zPIHVyDvhmCyaenWVo/estel5XkATa/hG:omRWQn5zaVQVenWVoWsIr6G

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
3056	rundll32mgr.exe
4320	WaterMark.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3056-7-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3056-15-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3056-13-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3056-9-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3056-11-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3056-8-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3056-18-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4320-28-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4320-29-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4320-35-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4320-38-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4320-39-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4320-40-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px7D3E.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
2140	4532	WerFault.exe	87

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 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "319342410"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142664"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "319342410"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437963714"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142664"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{3EA3FDC9-9EFB-11EF-AEE2-DA61A5E71E4E} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "321217161"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142664"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe
4320	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4320	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4268	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4268	iexplore.exe
4268	iexplore.exe
3452	IEXPLORE.EXE
3452	IEXPLORE.EXE
3452	IEXPLORE.EXE
3452	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
3056	rundll32mgr.exe
4320	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 708	1400	rundll32.exe	83
PID 1400 wrote to memory of 708	1400	rundll32.exe	83
PID 1400 wrote to memory of 708	1400	rundll32.exe	83
PID 708 wrote to memory of 3056	708	rundll32.exe	84
PID 708 wrote to memory of 3056	708	rundll32.exe	84
PID 708 wrote to memory of 3056	708	rundll32.exe	84
PID 3056 wrote to memory of 4320	3056	rundll32mgr.exe	85
PID 3056 wrote to memory of 4320	3056	rundll32mgr.exe	85
PID 3056 wrote to memory of 4320	3056	rundll32mgr.exe	85
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4532	4320	WaterMark.exe	87
PID 4320 wrote to memory of 4268	4320	WaterMark.exe	99
PID 4320 wrote to memory of 4268	4320	WaterMark.exe	99
PID 4320 wrote to memory of 2144	4320	WaterMark.exe	100
PID 4320 wrote to memory of 2144	4320	WaterMark.exe	100
PID 4268 wrote to memory of 3452	4268	iexplore.exe	102
PID 4268 wrote to memory of 3452	4268	iexplore.exe	102
PID 4268 wrote to memory of 3452	4268	iexplore.exe	102

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac494205f38dc31a976d8d5e5e055a27e634625b9cf95d046ad0bf18f9a443b2N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac494205f38dc31a976d8d5e5e055a27e634625b9cf95d046ad0bf18f9a443b2N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:708
- - 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:3056
  - - 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:4320
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:4532
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4532 -s 208
        6⤵
        Program crash
        
        PID:2140
    - - 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:4268
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4268 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3452
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:2144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4532 -ip 4532
1⤵
PID:5084

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
639f2148aa8a71984594ee0b2f8759e5

SHA1
a8be6a17cb8b53b4e2c988481c037791fceb99d3

SHA256
9f8b0a12bec443f5749a4dfe3dbdd6b9b0c837584ffc873a429ad6916ee97af8

SHA512
612be17647b94b0400c927dc04d46fb44f6da4e86dcc136f605ea5003abb3726f0b328215287a24d7a8699f8f05040216160bf9cd9b0c45984b74970fb33eb4b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\M6JHG9EK\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
60KB

MD5
94f2f6ffbba8e7644668b51b39983916

SHA1
63357bbdf90101969117983dbc0d4ed0e713c4d7

SHA256
ede7603855cb37082c241c720a6650988c684eb3bcb263e5dd7b457458940fed

SHA512
d04430ceac70c6fa71d07d9ee82ac2bb5e6c0641d5c9e7e5a3ed39d342e8b198f367676516a55f0653e0b88635a027b9ad220e223145b8be8df281bb6faf7156

Download Submit
memory/708-0-0x00000000658D0000-0x00000000658F4000-memory.dmp

Filesize
144KB

Download
memory/3056-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-5-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3056-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-20-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3056-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3056-10-0x0000000000870000-0x0000000000871000-memory.dmp

Filesize
4KB

Download
memory/3056-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4320-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4320-36-0x0000000077A62000-0x0000000077A63000-memory.dmp

Filesize
4KB

Download
memory/4320-35-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4320-37-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/4320-38-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4320-39-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4320-40-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4320-31-0x0000000077A62000-0x0000000077A63000-memory.dmp

Filesize
4KB

Download
memory/4320-30-0x0000000000060000-0x0000000000061000-memory.dmp

Filesize
4KB

Download
memory/4320-28-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4532-34-0x0000000000460000-0x0000000000461000-memory.dmp

Filesize
4KB

Download
memory/4532-33-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download