ramnit | 2b240b93bbd97f60b0fdf3a233971fca5c4e9bd2aef37ff5110f216535d5623e

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
19-12-2024 10:45

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General

Target

2b240b93bbd97f60b0fdf3a233971fca5c4e9bd2aef37ff5110f216535d5623eN.dll
Size

749KB
MD5

a32f2bcfdf7ff4a206b428c4f209c040
SHA1

3db18e92b74fdb87699cc10d829e06749a219598
SHA256

2b240b93bbd97f60b0fdf3a233971fca5c4e9bd2aef37ff5110f216535d5623e
SHA512

b7a9e006d35a238e935bb54c1c3b39af017bc48c80b0d558ec2d641781b8300ec835574626eedf22047ecdc70c32e2f828eea8ab6f46adcbe3917f36a75603ca
SSDEEP

6144:2NIQzLZN4k3WvmRPLx+xXqOkyWh9ZN/c4bsXdHtVHs7Z9UqKJ0M:2NIyZN4+Wv4PLq6Okrh9ZN/hs9DsdDC

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
4656	rundll32mgr.exe
3744	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/4656-13-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4656-12-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4656-10-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4656-8-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4656-7-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4656-17-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/4656-6-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3744-31-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3744-30-0x0000000000400000-0x000000000043A000-memory.dmp	upx
behavioral2/memory/3744-29-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3744-40-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/3744-41-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px979C.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 2 IoCs

pid	pid_target	Process	procid_target
1384	2468	WerFault.exe	83
1196	1788	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 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\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441370111"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main	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\LastCheckForUpdateLowDateTime = "906827216"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	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\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31150595"	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\LastCheckForUpdateHighDateTime = "31150595"	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
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31150595"	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\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "904951235"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31150595"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\GPU	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	iexplore.exe
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\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "906827216"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "904951235"	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\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{61789C2C-BDF6-11EF-B319-5227CD58F2D9} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	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

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe
3744	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3744	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4480	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4480	iexplore.exe
4480	iexplore.exe
2100	IEXPLORE.EXE
2100	IEXPLORE.EXE
2100	IEXPLORE.EXE
2100	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
4656	rundll32mgr.exe
3744	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2468	2060	rundll32.exe	83
PID 2060 wrote to memory of 2468	2060	rundll32.exe	83
PID 2060 wrote to memory of 2468	2060	rundll32.exe	83
PID 2468 wrote to memory of 4656	2468	rundll32.exe	84
PID 2468 wrote to memory of 4656	2468	rundll32.exe	84
PID 2468 wrote to memory of 4656	2468	rundll32.exe	84
PID 4656 wrote to memory of 3744	4656	rundll32mgr.exe	87
PID 4656 wrote to memory of 3744	4656	rundll32mgr.exe	87
PID 4656 wrote to memory of 3744	4656	rundll32mgr.exe	87
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 1788	3744	WaterMark.exe	88
PID 3744 wrote to memory of 4480	3744	WaterMark.exe	93
PID 3744 wrote to memory of 4480	3744	WaterMark.exe	93
PID 3744 wrote to memory of 1948	3744	WaterMark.exe	94
PID 3744 wrote to memory of 1948	3744	WaterMark.exe	94
PID 4480 wrote to memory of 2100	4480	iexplore.exe	96
PID 4480 wrote to memory of 2100	4480	iexplore.exe	96
PID 4480 wrote to memory of 2100	4480	iexplore.exe	96

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2b240b93bbd97f60b0fdf3a233971fca5c4e9bd2aef37ff5110f216535d5623eN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2b240b93bbd97f60b0fdf3a233971fca5c4e9bd2aef37ff5110f216535d5623eN.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2468
- - 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:4656
  - - 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:3744
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\system32\svchost.exe
        5⤵
        
        PID:1788
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 204
        6⤵
        Program crash
        
        PID:1196
    - - 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:4480
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4480 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2100
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        
        PID:1948
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2468 -s 608
    3⤵
    - Program crash
    PID:1384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2468 -ip 2468
1⤵
PID:4264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1788 -ip 1788
1⤵
PID:1020

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
e5ade6c00eff82e29d72a64e434c59bf

SHA1
39f7f2422694b953c56df2951bfa90e0ecc0bd5b

SHA256
a53cbf629f2b9e3e7ae51aad0cf20047fe6eedffe9b13e929036ec79c7de9501

SHA512
63e7b8bb83431752d876866898cc39d26a1b4494eff1f28c97d3c007849a46e93ed16f893156bb35b127d4717eed390e1cd1a2230ec8742c391af04bedb3ccbb

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

Filesize
404B

MD5
f1477e80dc6cf077119bc48ae399a8e2

SHA1
fb8587a6998f89b5ed282e363043bd9e80411030

SHA256
cb1737e74c314e02f28de4b53a64ab62f44c15c78408fb07318137cfea330372

SHA512
14fbe0534d38f31e3e36fec3fbb30ec9f5573e8aa03bf4dc4cb77f77b334918c49c7a7ba713fb73ce5c1c05b97eadd6815219ab2f50f40436ba7588e539447af

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\ver1B63.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
164KB

MD5
2a37762e1964cb393abf1b26b048e762

SHA1
6167b12b2d0e4db8bad3dd8ac6c7674f8eea2f1d

SHA256
385539e7b0dbbe1de66ca4888b07baab2bbce51b3e6c6edc1b2602628fa7d8e5

SHA512
57e2904f6231c879d99df7fdbc321c03c76bef310e0510b818d1fa3663d44d6e56742d1b746e96d42e9559c83d437bbc4eb7fe672567fd7e18ec513bfb8c53aa

Download Submit
memory/1788-35-0x0000000000E40000-0x0000000000E41000-memory.dmp

Filesize
4KB

Download
memory/1788-36-0x0000000000E20000-0x0000000000E21000-memory.dmp

Filesize
4KB

Download
memory/2468-1-0x0000000010000000-0x00000000100C1000-memory.dmp

Filesize
772KB

Download
memory/2468-37-0x0000000010000000-0x00000000100C1000-memory.dmp

Filesize
772KB

Download
memory/3744-32-0x0000000000830000-0x0000000000831000-memory.dmp

Filesize
4KB

Download
memory/3744-38-0x0000000000A80000-0x0000000000A81000-memory.dmp

Filesize
4KB

Download
memory/3744-33-0x0000000077812000-0x0000000077813000-memory.dmp

Filesize
4KB

Download
memory/3744-41-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3744-40-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3744-39-0x0000000077812000-0x0000000077813000-memory.dmp

Filesize
4KB

Download
memory/3744-31-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3744-30-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3744-29-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4656-11-0x00000000008B0000-0x00000000008B1000-memory.dmp

Filesize
4KB

Download
memory/4656-5-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download