ramnit | bf986b1aaf55c742fe7453b94cd19f01f468cb8abffd4d2768133e3f67515d8f

Analysis

max time kernel
96s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 23:25

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General

Target

bf986b1aaf55c742fe7453b94cd19f01f468cb8abffd4d2768133e3f67515d8f.dll
Size

216KB
MD5

fcf4adc96321bf1f89b59a9ffa19b1b4
SHA1

2fc9e1c0a2d0bb939635929ad08445f5e4e02ee8
SHA256

bf986b1aaf55c742fe7453b94cd19f01f468cb8abffd4d2768133e3f67515d8f
SHA512

f9c9e88cf5dfc5e1bfc3e5b24d67bc3f7dbbfecd52754541d7a756c05e94eb4c9c93d5621c6fa191e482ea02efdaa526ed370ae5406eee057bfa9fa96d4d8232
SSDEEP

3072:xnMoFkOKCg3CXmSSZlzgeBTg4vRPo5NNFs+XNtUU/chmcFTulOVq5pNOOhFmugE9:xMJOWK4l0wqOVq1VhFd7JiG

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
3196	rundll32mgr.exe
3436	WaterMark.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3196-6-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3196-14-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3436-15-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3436-11-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3436-21-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3436-23-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxAE22.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
1576	4820	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 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31150097"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3721727376"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{094C842E-BC05-11EF-A7EA-6AACA39217E0} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150097"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3719227110"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150097"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3719227110"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441156503"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe
3436	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3436	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4116	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4116	iexplore.exe
4116	iexplore.exe
1520	IEXPLORE.EXE
1520	IEXPLORE.EXE
1520	IEXPLORE.EXE
1520	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 5052 wrote to memory of 1360	5052	rundll32.exe	83
PID 5052 wrote to memory of 1360	5052	rundll32.exe	83
PID 5052 wrote to memory of 1360	5052	rundll32.exe	83
PID 1360 wrote to memory of 3196	1360	rundll32.exe	84
PID 1360 wrote to memory of 3196	1360	rundll32.exe	84
PID 1360 wrote to memory of 3196	1360	rundll32.exe	84
PID 3196 wrote to memory of 3436	3196	rundll32mgr.exe	85
PID 3196 wrote to memory of 3436	3196	rundll32mgr.exe	85
PID 3196 wrote to memory of 3436	3196	rundll32mgr.exe	85
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 4820	3436	WaterMark.exe	86
PID 3436 wrote to memory of 2520	3436	WaterMark.exe	91
PID 3436 wrote to memory of 2520	3436	WaterMark.exe	91
PID 3436 wrote to memory of 4116	3436	WaterMark.exe	92
PID 3436 wrote to memory of 4116	3436	WaterMark.exe	92
PID 4116 wrote to memory of 1520	4116	iexplore.exe	94
PID 4116 wrote to memory of 1520	4116	iexplore.exe	94
PID 4116 wrote to memory of 1520	4116	iexplore.exe	94

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf986b1aaf55c742fe7453b94cd19f01f468cb8abffd4d2768133e3f67515d8f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5052
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf986b1aaf55c742fe7453b94cd19f01f468cb8abffd4d2768133e3f67515d8f.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1360
- - 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 WriteProcessMemory
    PID:3196
  - - 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 WriteProcessMemory
      PID:3436
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:4820
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 204
        6⤵
        Program crash
        
        PID:1576
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:2520
    - - 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:4116
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4116 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4820 -ip 4820
1⤵
PID:4388

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
ec237169ada59f1945749967a6d3d7f0

SHA1
e8fe32e8fa527409463d3fa0d63b6bdf709d7bd6

SHA256
b783f55456ca301f00aab79b6a0720bfb2450aefd094e6026231fab663152d70

SHA512
d5b5bff9f6afb36817c2c556e67c4ed7fc787a51bef623eb7150b596cc4cc88bee4b10b5eccae2c2ed0055653166f68bf75f2375ce4689666eb42330361de2d5

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

Filesize
404B

MD5
56932ccbed2d308aea72d803e67d0f99

SHA1
1c72af7b9f12ef55cd1650acea5243d679d874d5

SHA256
5dc857b4da2ab088c2bc3bda63080d8074cb2a1baf2191b1bb99bdc6b95e60e2

SHA512
4f070a4093dc2d1afa896b01b97155c99420d58475a4534a199b9a0c6964c48677916a2f8da67ae7f725e02a7cd37647f74238254241a09a24eb024cab6e74aa

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VKYZDMA5\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
65KB

MD5
849ef19ec0155d79d4fa5bfb5657b106

SHA1
eb7e7ff208ecb40d35755d8f36e31e2482166299

SHA256
8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

SHA512
30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

Download Submit
memory/1360-0-0x0000000010000000-0x000000001003A000-memory.dmp

Filesize
232KB

Download
memory/3196-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3196-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3196-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3436-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3436-20-0x0000000077D72000-0x0000000077D73000-memory.dmp

Filesize
4KB

Download
memory/3436-19-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download
memory/3436-23-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3436-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3436-15-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3436-12-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/4820-18-0x0000000000B40000-0x0000000000B41000-memory.dmp

Filesize
4KB

Download
memory/4820-17-0x0000000000B60000-0x0000000000B61000-memory.dmp

Filesize
4KB

Download