ramnit | d4975c23a357e8c162b119162a83493a75f808b9bf8e21319d9a144be0aa8a64

Analysis

max time kernel
92s
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
09/11/2024, 04:08

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General

Target
d4975c23a357e8c162b119162a83493a75f808b9bf8e21319d9a144be0aa8a64N.dll
Size 1.8MB
Sample241109-ep85dawpgz
SHA256 d4975c23a357e8c162b119162a83493a75f808b9bf8e21319d9a144be0aa8a64
MD5 ef1a0fdec5f39d901ad0f933984ac6d0
SHA1 3ccfd034c5f8f0d6ae6b5c299c9ae18490ebd801
SHA512 7a235aefe2c74d85252303d6c1bc3447d31c1fe3fa531fdda4a854fb567992096bd756efbd1f010c2a14d8ad01c41ff79fc9f84e99cf530710c0470305db7edf
SSDEEP 24576:87IY7a9IRCRqRPkHQo411810cNScGKJydXTZDwmzRMo3DP7x5nbiQjs:8IY5RMHMf810Knor5zqo3zNJuQj
MD5 SHA1 SHA512 SSDEEP

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 4 IoCs

pid	Process
1188	rundll32Srv.exe
3948	rundll32Srv.exe
4548	WaterMark.exe
3648	WaterMark.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1188 set thread context of 3948	1188	rundll32Srv.exe	89
PID 4548 set thread context of 3648	4548	WaterMark.exe	92

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3948-12-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3948-9-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3948-13-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3948-15-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3648-31-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3648-35-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/memory/3648-41-0x0000000000400000-0x0000000000418000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px884A.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32Srv.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1296	4340	WerFault.exe	83
4436	872	WerFault.exe	93

System Location Discovery: System Language Discovery 1 TTPs 6 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	rundll32Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WaterMark.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 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{3C5DA11A-9E50-11EF-B9D5-FAA11E730504} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142493"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437890266"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142493"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142493"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\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-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "280863642"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "280863642"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "283363628"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3648	WaterMark.exe
3648	WaterMark.exe
3648	WaterMark.exe
3648	WaterMark.exe
3648	WaterMark.exe
3648	WaterMark.exe
3648	WaterMark.exe
3648	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3648	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4988	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1188	rundll32Srv.exe
4548	WaterMark.exe
4988	iexplore.exe
4988	iexplore.exe
2208	IEXPLORE.EXE
2208	IEXPLORE.EXE
2208	IEXPLORE.EXE
2208	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 4340	2244	rundll32.exe	83
PID 2244 wrote to memory of 4340	2244	rundll32.exe	83
PID 2244 wrote to memory of 4340	2244	rundll32.exe	83
PID 4340 wrote to memory of 1188	4340	rundll32.exe	85
PID 4340 wrote to memory of 1188	4340	rundll32.exe	85
PID 4340 wrote to memory of 1188	4340	rundll32.exe	85
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 1188 wrote to memory of 3948	1188	rundll32Srv.exe	89
PID 3948 wrote to memory of 4548	3948	rundll32Srv.exe	90
PID 3948 wrote to memory of 4548	3948	rundll32Srv.exe	90
PID 3948 wrote to memory of 4548	3948	rundll32Srv.exe	90
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 4548 wrote to memory of 3648	4548	WaterMark.exe	92
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 872	3648	WaterMark.exe	93
PID 3648 wrote to memory of 4988	3648	WaterMark.exe	101
PID 3648 wrote to memory of 4988	3648	WaterMark.exe	101
PID 4988 wrote to memory of 2208	4988	iexplore.exe	102
PID 4988 wrote to memory of 2208	4988	iexplore.exe	102
PID 4988 wrote to memory of 2208	4988	iexplore.exe	102

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d4975c23a357e8c162b119162a83493a75f808b9bf8e21319d9a144be0aa8a64N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d4975c23a357e8c162b119162a83493a75f808b9bf8e21319d9a144be0aa8a64N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4340
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1188
  - - C:\Windows\SysWOW64\rundll32Srv.exe
      "C:\Windows\SysWOW64\rundll32Srv.exe"
      4⤵
      Executes dropped EXE
      Drops file in Program Files directory
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3948
    - - C:\Program Files (x86)\Microsoft\WaterMark.exe
        
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4548
      - C:\Program Files (x86)\Microsoft\WaterMark.exe
        
        "C:\Program Files (x86)\Microsoft\WaterMark.exe"
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:3648
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        7⤵
        
        PID:872
        
        C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 872 -s 208
        8⤵
        Program crash
        
        PID:4436
        
        C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        7⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4988
        
        C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4988 CREDAT:17410 /prefetch:2
        8⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2208
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4340 -s 640
    3⤵
    - Program crash
    PID:1296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4340 -ip 4340
1⤵
PID:1664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 872 -ip 872
1⤵
PID:4524

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

7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 471B
SHA256 e4980b849930ff5ad2572d98efa45c128edad97927f4519a3ad8f037787b7be5
MD5 ee5fe122ed7f86c205655b9cba8c9138
SHA1 e336589d24be98c05a47ad93daf11ab568dea58b
SHA512 1d0a1901f19a14173ef483d4c4cdb7ab6716bf2bec26cdefa22f1c4b661e592daea02c6dc634ddbcdf18e2b30df171ad8b166428b5fe9ff3f2290da2378caed5
MD5 SHA1 SHA512

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7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 404B
SHA256 6957d8706c0f8a627c422f22262399ecc0b0065eb87bd4ad1dd809943525c8e7
MD5 be0287027974a6f5384567024779eee4
SHA1 77412bec90e7c0fee81c53cb519a2ccb22b6a9fb
SHA512 d7cc2377b59bdbad3581aa2ebbe0d1880aa672758927259a27e961aa5bcb1073fe60938209281d883e89bb029b196160390b20039addd0fafc5b72b6c8b273be
MD5 SHA1 SHA512

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suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\FQRZN8O7\suggestions[1].en-US
Size 17KB
SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
MD5 5a34cb996293fde2cb7a4ac89587393a
SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
MD5 SHA1 SHA512 SSDEEP

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rundll32Srv.exe

Path C:\Windows\SysWOW64\rundll32Srv.exe
Size 69KB
SHA256 f2cf33052bb9ed658351e1ff0687d0602a1f619e0976cd45852d3eb109aacf60
MD5 3284b0d95ae1f80355da5e04e79a6be1
SHA1 642bbb026f238a4eed9931772869b637621d98c8
SHA512 13712a19409818ecb66ecb2bb045a5800e4362f0ff0e9b2d158590fd501c35861ceae195f8171301ef6e72dd3b6f28184af31188836d92c171bfa6bedeb98547
SSDEEP 1536:bJupXKiER8iMQGV644h10kTYv3ZOLJ+M/DIJPlrGnWcTSy:bJuqRVQV644JcPZOdjDIJaUy
MD5 SHA1 SHA512 SSDEEP

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memory/872-38-0x00000000010E0000-0x00000000010E1000-memory.dmp

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memory/872-39-0x00000000010C0000-0x00000000010C1000-memory.dmp

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memory/1188-23-0x0000000000400000-0x0000000000459000-memory.dmp

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memory/1188-5-0x0000000000400000-0x0000000000459000-memory.dmp

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memory/1188-6-0x00000000001C0000-0x00000000001C3000-memory.dmp

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memory/3648-31-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/3648-35-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/3648-33-0x00000000004F0000-0x00000000004F1000-memory.dmp

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memory/3648-41-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/3648-40-0x0000000077382000-0x0000000077383000-memory.dmp

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memory/3948-15-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/3948-13-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/3948-9-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/3948-12-0x0000000000400000-0x0000000000418000-memory.dmp

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memory/4340-1-0x0000000010000000-0x000000001035B000-memory.dmp

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memory/4340-37-0x0000000010000000-0x000000001035B000-memory.dmp

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memory/4548-34-0x0000000000400000-0x0000000000459000-memory.dmp

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memory/4548-21-0x0000000000400000-0x0000000000459000-memory.dmp

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