ramnit | ac2c4be5b4becca042ca33db7860021013eaa2a69cf6d327990019fd25f912af

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 02:17

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General

Target

ac2c4be5b4becca042ca33db7860021013eaa2a69cf6d327990019fd25f912af.dll
Size

200KB
MD5

c6164a93c09a9e93df8fa2c3dab0589c
SHA1

32d16300cc9d56661472d715cc9c04dae159b018
SHA256

ac2c4be5b4becca042ca33db7860021013eaa2a69cf6d327990019fd25f912af
SHA512

c20c00fd9e328896f7f41382d8b7736d7066cbad097395b32d658bb3578a33d66c3d88dfb00c81391019ca93b880a7fd295dcce94daeccf6ea5582a3b7286828
SSDEEP

3072:m36N79shVVoJXuSfjfGqlo58fNLFc6fpO9dC87YQXaQN:mKLgVVoJXuqbGovc6RO9QNQXaQ

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
2264	rundll32Srv.exe
3252	DesktopLayer.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023bae-3.dat	upx
behavioral2/memory/2264-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/2264-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3252-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3252-12-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3252-16-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/3252-17-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxB8B1.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

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	rundll32Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DesktopLayer.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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31152938"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{66424E18-C71D-11EF-91C3-CAFD856C81B1} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "987622202"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "442376430"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "983872108"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31152938"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\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-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31152938"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "983872108"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3252	DesktopLayer.exe
3252	DesktopLayer.exe
3252	DesktopLayer.exe
3252	DesktopLayer.exe
3252	DesktopLayer.exe
3252	DesktopLayer.exe
3252	DesktopLayer.exe
3252	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
832	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
832	iexplore.exe
832	iexplore.exe
1064	IEXPLORE.EXE
1064	IEXPLORE.EXE
1064	IEXPLORE.EXE
1064	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2452	2208	rundll32.exe	83
PID 2208 wrote to memory of 2452	2208	rundll32.exe	83
PID 2208 wrote to memory of 2452	2208	rundll32.exe	83
PID 2452 wrote to memory of 2264	2452	rundll32.exe	84
PID 2452 wrote to memory of 2264	2452	rundll32.exe	84
PID 2452 wrote to memory of 2264	2452	rundll32.exe	84
PID 2264 wrote to memory of 3252	2264	rundll32Srv.exe	85
PID 2264 wrote to memory of 3252	2264	rundll32Srv.exe	85
PID 2264 wrote to memory of 3252	2264	rundll32Srv.exe	85
PID 3252 wrote to memory of 832	3252	DesktopLayer.exe	86
PID 3252 wrote to memory of 832	3252	DesktopLayer.exe	86
PID 832 wrote to memory of 1064	832	iexplore.exe	87
PID 832 wrote to memory of 1064	832	iexplore.exe	87
PID 832 wrote to memory of 1064	832	iexplore.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac2c4be5b4becca042ca33db7860021013eaa2a69cf6d327990019fd25f912af.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2208
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac2c4be5b4becca042ca33db7860021013eaa2a69cf6d327990019fd25f912af.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2452
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2264
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:3252
    - - 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:832
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:832 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1064

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
e5e877bcc2542ab8629d8f34bafcd7f4

SHA1
8f618efa1584268e9eafd2b01c2a2ac006113c01

SHA256
5e63bcec102963b96b1f7d08ec512431a0ba748f90134dc51a05046296541e9e

SHA512
79153f941ae2cc4a5649ac729f03dd3f98df24d5084e36d14467b2a859e6d63fc4167feac24e7b519a9e179fb243447fe6d09519169b11e3151d5cc467e4c9d4

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

Filesize
404B

MD5
a6ab479c82cfdf7eff009337e664b7fb

SHA1
886f3540df6e547b095318c75fd0a1a8f8e8931e

SHA256
3a244ad13b24affa71bc05d5b60ee0a2cd22955059d6e6fe6a38879efa12c73e

SHA512
e9c8db0e192de09126a6aaab169626802cea30a4ec3b8783d12dde3558bc67a0a80e731574207354f9d0d75a9dcdd0adbfa89c558c776739f71810f224b599c8

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\XH3Z2ZON\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/2264-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2264-6-0x0000000000440000-0x000000000044F000-memory.dmp

Filesize
60KB

Download
memory/2264-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2452-0-0x00000000755A0000-0x00000000755DC000-memory.dmp

Filesize
240KB

Download
memory/3252-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3252-17-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3252-15-0x00000000006B0000-0x00000000006B1000-memory.dmp

Filesize
4KB

Download
memory/3252-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3252-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download