ramnit | 48d83455b9131fac7ceb5db5b90844b72e44b0250b6a9a57ab0716caceef4fd6

General

Target

48d83455b9131fac7ceb5db5b90844b72e44b0250b6a9a57ab0716caceef4fd6.dll
Size

2.5MB
MD5

286c871bca3610af9d52823235e73816
SHA1

44efc89e8f8c59aa6c099aabeb477e26e76de7c1
SHA256

48d83455b9131fac7ceb5db5b90844b72e44b0250b6a9a57ab0716caceef4fd6
SHA512

9987011effb55cb7ab8cc9a3ff3846bc9693e17e2fb9b4cf7cddad71a264c06d687e21990fbe9b5c14454bcc6bb2b04fedcb8975cb255c25f1131ee44c803404
SSDEEP

49152:lrjJBVKYHRK2AE0By+HX2E81fREZh2YF2DxoSP0WqxwLc827MGk64A9dF2yL:lhnKYHU2AEStHX2PfREZh21SS8WqxP80

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
5056	rundll32Srv.exe
4428	DesktopLayer.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b94-3.dat	upx
behavioral2/memory/5056-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4428-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4428-16-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4428-11-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/5056-8-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxBFC6.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 26 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{4215DC1D-D9D8-11EF-A7EA-E6FB6C85BB83} = "0"	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\Recovery\PendingRecovery	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\VersionManager\LastCheckForUpdateLowDateTime = "393854455"	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\Main\WindowsSearch	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
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 = "31157733"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "444435806"	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\Main	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 = "31157733"	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\LastCheckForUpdateLowDateTime = "394323567"	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\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\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	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
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4428	DesktopLayer.exe
4428	DesktopLayer.exe
4428	DesktopLayer.exe
4428	DesktopLayer.exe
4428	DesktopLayer.exe
4428	DesktopLayer.exe
4428	DesktopLayer.exe
4428	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3684	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3684	iexplore.exe
3684	iexplore.exe
5004	IEXPLORE.EXE
5004	IEXPLORE.EXE
5004	IEXPLORE.EXE
5004	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 1128	2024	rundll32.exe	84
PID 2024 wrote to memory of 1128	2024	rundll32.exe	84
PID 2024 wrote to memory of 1128	2024	rundll32.exe	84
PID 1128 wrote to memory of 5056	1128	rundll32.exe	85
PID 1128 wrote to memory of 5056	1128	rundll32.exe	85
PID 1128 wrote to memory of 5056	1128	rundll32.exe	85
PID 5056 wrote to memory of 4428	5056	rundll32Srv.exe	86
PID 5056 wrote to memory of 4428	5056	rundll32Srv.exe	86
PID 5056 wrote to memory of 4428	5056	rundll32Srv.exe	86
PID 4428 wrote to memory of 3684	4428	DesktopLayer.exe	87
PID 4428 wrote to memory of 3684	4428	DesktopLayer.exe	87
PID 3684 wrote to memory of 5004	3684	iexplore.exe	88
PID 3684 wrote to memory of 5004	3684	iexplore.exe	88
PID 3684 wrote to memory of 5004	3684	iexplore.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\48d83455b9131fac7ceb5db5b90844b72e44b0250b6a9a57ab0716caceef4fd6.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\48d83455b9131fac7ceb5db5b90844b72e44b0250b6a9a57ab0716caceef4fd6.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1128
- - 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:5056
  - - 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:4428
    - - 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:3684
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3684 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:5004

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

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
dc142ff8759ecb81417ba231bbcf25d0

SHA1
201681d524cde8af5c11b5111f5fa697521c5739

SHA256
d6e2a573b1e137d8b823b82cfeaadeb30df36a0fa7a268a1278465b28fdc7bb6

SHA512
b36456cf3ef37e4bbe0e4acf8b25cc85a39f8517d1b80b3191b1be7ddc6d58c74247b2d9dedb0b67ac4f8a2f3d92773e90aee326cfe612f8573ba6ad6b73e833

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

Filesize
404B

MD5
17d1ca5d92600cec5d1d0100fdd0892f

SHA1
599c1f6c9511649f0fa1a35b6a67632c338f938a

SHA256
7715f994e65f33c9c7558873f3b54776ab3e7e4b9e4488fd95edabf6a5a0fd8f

SHA512
ec6fea47aee0bd078ee6d8e035bf9c7655b7921480fc22ee26f4a75891fcc7869958275cfd14d6bf8bb2de15b78b0fef5d2f1d950c6a0aa5080d954ee2be78d4

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\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1128-1-0x0000000074850000-0x0000000074AE6000-memory.dmp

Filesize
2.6MB

Download
memory/4428-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4428-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4428-13-0x0000000001F50000-0x0000000001F51000-memory.dmp

Filesize
4KB

Download
memory/4428-11-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5056-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/5056-6-0x0000000002040000-0x000000000204F000-memory.dmp

Filesize
60KB

Download
memory/5056-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

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