ramnit | 8915e9aa998b0026051d724f79ef3c48344cf0c091e7ea9396796f698f129bf2

Analysis

max time kernel
93s
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 16:58

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General

Target

8915e9aa998b0026051d724f79ef3c48344cf0c091e7ea9396796f698f129bf2N.dll
Size

729KB
MD5

bea93295615a440ccb1744ebdf289ea0
SHA1

3d4c53405d88f66b6c196737181b6c4b4a4598ef
SHA256

8915e9aa998b0026051d724f79ef3c48344cf0c091e7ea9396796f698f129bf2
SHA512

6a0c6db4f9225cf91729e4f612308eddd3ced0ceb714bd4f4f049f8a1c9db91c64516dd829c861a67f61dcd8839e31c0b2db7bdb571d82ccb439c9e0e553b336
SSDEEP

12288:kh8fZLyb9PzVMBC/HVMOp4PkxHLCYwZckMQMNqK5ngHn:k8F+Pzr/Hfp4MIYwZckMQmB0

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
4068	rundll32mgr.exe
60	WaterMark.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4068-17-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4068-14-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4068-13-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4068-11-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/60-29-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4068-10-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4068-9-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4068-8-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/60-37-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/60-39-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/60-40-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px8F40.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
760	3596	WerFault.exe	88

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
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\LastUpdateLowDateTime = "3237278806"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	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 (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437936518"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main	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
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142600"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3237278806"	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\GPU	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 (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3239622308"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142600"	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
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{EC928E63-9EBB-11EF-B9D5-4A034D48373C} = "0"	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\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142600"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	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\Recovery\AdminActive	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe
60	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	60	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4064	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4064	iexplore.exe
4064	iexplore.exe
3608	IEXPLORE.EXE
3608	IEXPLORE.EXE
3608	IEXPLORE.EXE
3608	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
4068	rundll32mgr.exe
60	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 1288 wrote to memory of 4484	1288	rundll32.exe	83
PID 1288 wrote to memory of 4484	1288	rundll32.exe	83
PID 1288 wrote to memory of 4484	1288	rundll32.exe	83
PID 4484 wrote to memory of 4068	4484	rundll32.exe	85
PID 4484 wrote to memory of 4068	4484	rundll32.exe	85
PID 4484 wrote to memory of 4068	4484	rundll32.exe	85
PID 4068 wrote to memory of 60	4068	rundll32mgr.exe	87
PID 4068 wrote to memory of 60	4068	rundll32mgr.exe	87
PID 4068 wrote to memory of 60	4068	rundll32mgr.exe	87
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 3596	60	WaterMark.exe	88
PID 60 wrote to memory of 4064	60	WaterMark.exe	95
PID 60 wrote to memory of 4064	60	WaterMark.exe	95
PID 60 wrote to memory of 1604	60	WaterMark.exe	96
PID 60 wrote to memory of 1604	60	WaterMark.exe	96
PID 4064 wrote to memory of 3608	4064	iexplore.exe	97
PID 4064 wrote to memory of 3608	4064	iexplore.exe	97
PID 4064 wrote to memory of 3608	4064	iexplore.exe	97

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8915e9aa998b0026051d724f79ef3c48344cf0c091e7ea9396796f698f129bf2N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8915e9aa998b0026051d724f79ef3c48344cf0c091e7ea9396796f698f129bf2N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4484
- - 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:4068
  - - 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:60
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:3596
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3596 -s 208
        6⤵
        Program crash
        
        PID:760
    - - 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:4064
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4064 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3608
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:1604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3596 -ip 3596
1⤵
PID:3188

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
813e9e0f8a94d95117efff3638e8db62

SHA1
a879d0d072ed394ab1cc98a0997dbf7484299275

SHA256
6c0769f374f50f4d60aee3196aea8c4a61dfb2a6fefad786be3d5ee582f3160e

SHA512
1fc00b54474e5edbba0c0ebdbe02d8342d93800783107b206b389f6a9fd569ad3d445cec53bc6787a077f2c42a74bf5508e60debba4734f4801e463f912a132d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\FQRZN8O7\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
293KB

MD5
b913d0bea98b4e215fc9c9c0fb4bd351

SHA1
bc6a89a2895bff53c0e80ef390ffaf022e38dc86

SHA256
9621bb5921c596eb5246df3b5d59d3be598b4ef2d92dbf19a25c8f66cee9f2f9

SHA512
3739ab8eeeea6d3759fa519e0c095b357e7044551a0e743cbf63b70e991bd9c52d4c6bd322cb6126d014ac85e07b081ef57591935b3225c9a30db0f3866f275b

Download Submit
memory/60-39-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/60-40-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/60-31-0x0000000000060000-0x0000000000061000-memory.dmp

Filesize
4KB

Download
memory/60-36-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/60-38-0x0000000077A02000-0x0000000077A03000-memory.dmp

Filesize
4KB

Download
memory/60-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/60-37-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/60-32-0x0000000077A02000-0x0000000077A03000-memory.dmp

Filesize
4KB

Download
memory/3596-34-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

Filesize
4KB

Download
memory/3596-35-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

Filesize
4KB

Download
memory/4068-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4068-6-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/4068-7-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4068-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4068-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4068-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4068-21-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/4068-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4068-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4068-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4068-12-0x00000000008D0000-0x00000000008D1000-memory.dmp

Filesize
4KB

Download
memory/4068-5-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4484-0-0x0000000010000000-0x00000000100BC000-memory.dmp

Filesize
752KB

Download