ramnit | 4c2e4dee4b9f731082e8f24ecf27013effdf5ca39fce9f758a6a6e393e47e0d0

General

Target

4c2e4dee4b9f731082e8f24ecf27013effdf5ca39fce9f758a6a6e393e47e0d0.dll
Size

404KB
MD5

4701b4296c546163ec9bace6af4ab360
SHA1

387bb23060da23deaf6b11cb84910fee3d46a20e
SHA256

4c2e4dee4b9f731082e8f24ecf27013effdf5ca39fce9f758a6a6e393e47e0d0
SHA512

8f3cb1d511b7c705af8c4eb1c8dbbbf7d28358ca7ef2749f41e4d8555b112bc566ac650ec16cc5f7f98475534fd9c65c618e519f946ec96300507dfe5904f8f2
SSDEEP

12288:b7aFSR2vb3Topu+3Co+3SQUqulazXM2ncc:6QQGazXznc

Score

10^/10

ramnit banker 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

Executes dropped EXE 2 IoCs

pid	Process
1324	rundll32Srv.exe
1384	DesktopLayer.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000005c50-56.dat	upx
behavioral1/memory/1920-58-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x0007000000005c50-60.dat	upx
behavioral1/files/0x0007000000005c50-62.dat	upx
behavioral1/files/0x000b0000000122e0-63.dat	upx
behavioral1/memory/1324-66-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x000b0000000122e0-65.dat	upx
behavioral1/files/0x000b0000000122e0-68.dat	upx
behavioral1/memory/1384-69-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1920	rundll32.exe
1324	rundll32Srv.exe

Drops file in System32 directory 1 IoCs

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

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px6B03.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

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{B2F5C271-4996-11ED-85B0-72E6D75F6BEB} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "372279700"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1384	DesktopLayer.exe
1384	DesktopLayer.exe
1384	DesktopLayer.exe
1384	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1888	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1888	iexplore.exe
1888	iexplore.exe
1488	IEXPLORE.EXE
1488	IEXPLORE.EXE
1488	IEXPLORE.EXE
1488	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 1920	2028	rundll32.exe	27
PID 2028 wrote to memory of 1920	2028	rundll32.exe	27
PID 2028 wrote to memory of 1920	2028	rundll32.exe	27
PID 2028 wrote to memory of 1920	2028	rundll32.exe	27
PID 2028 wrote to memory of 1920	2028	rundll32.exe	27
PID 2028 wrote to memory of 1920	2028	rundll32.exe	27
PID 2028 wrote to memory of 1920	2028	rundll32.exe	27
PID 1920 wrote to memory of 1324	1920	rundll32.exe	28
PID 1920 wrote to memory of 1324	1920	rundll32.exe	28
PID 1920 wrote to memory of 1324	1920	rundll32.exe	28
PID 1920 wrote to memory of 1324	1920	rundll32.exe	28
PID 1324 wrote to memory of 1384	1324	rundll32Srv.exe	29
PID 1324 wrote to memory of 1384	1324	rundll32Srv.exe	29
PID 1324 wrote to memory of 1384	1324	rundll32Srv.exe	29
PID 1324 wrote to memory of 1384	1324	rundll32Srv.exe	29
PID 1384 wrote to memory of 1888	1384	DesktopLayer.exe	30
PID 1384 wrote to memory of 1888	1384	DesktopLayer.exe	30
PID 1384 wrote to memory of 1888	1384	DesktopLayer.exe	30
PID 1384 wrote to memory of 1888	1384	DesktopLayer.exe	30
PID 1888 wrote to memory of 1488	1888	iexplore.exe	32
PID 1888 wrote to memory of 1488	1888	iexplore.exe	32
PID 1888 wrote to memory of 1488	1888	iexplore.exe	32
PID 1888 wrote to memory of 1488	1888	iexplore.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c2e4dee4b9f731082e8f24ecf27013effdf5ca39fce9f758a6a6e393e47e0d0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c2e4dee4b9f731082e8f24ecf27013effdf5ca39fce9f758a6a6e393e47e0d0.dll,#1
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1920
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1324
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:1384
    - - 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:1888
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1888 CREDAT:275457 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\EECZVRTU.txt

Filesize
606B

MD5
4bd7133d0b0cec3c5599464ce83c3555

SHA1
8029c034335914c3db1ffe6a4c14acf91e95178d

SHA256
e37c33ce85c953c6da19bce44f035b6669b5e9dfbf9abed71ae57cec5bc7c92e

SHA512
8368d32b97582d5bf7c09c2ad77e2429fd0d8cd1a7f5e3e1cc5abef83575e89bad97a9d3052f988c84bb05c683483d6d6e6934306cb6699e4ab0bb72f204210d

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
\Windows\SysWOW64\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1324-66-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1384-69-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1920-58-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1920-57-0x0000000010000000-0x000000001007E000-memory.dmp

Filesize
504KB

Download
memory/1920-55-0x0000000075561000-0x0000000075563000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing