ramnit | e33fdddf32359a0c4493b82a2b3b51d05f09913cd048f861a9f2793628221984

General

Target

e33fdddf32359a0c4493b82a2b3b51d05f09913cd048f861a9f2793628221984.dll
Size

120KB
MD5

1b8ac4723c74781001ac7bf42606546b
SHA1

3a0fb345504586e9c03007678ea45ebf99854f18
SHA256

e33fdddf32359a0c4493b82a2b3b51d05f09913cd048f861a9f2793628221984
SHA512

a76bc91c0bf97677f8ebfb7339b51eed82b980d10cadca1417f21c1dfd3cc737b8a4e7ebb2eb9002ba48ee054575a8498baa6c1e267c4c2b64b996d093a03743
SSDEEP

3072:q61Ye3TaEu2CoCcn3zO7A4D8X4A59gzo+9:nTa12CoCckAe8XQzo+9

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
2660	rundll32Srv.exe
1660	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000022dd8-134.dat	upx
behavioral2/files/0x0007000000022dd8-135.dat	upx
behavioral2/memory/2660-139-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0008000000022dd9-138.dat	upx
behavioral2/memory/1660-140-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0008000000022dd9-137.dat	upx

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 created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxDA63.tmp	rundll32Srv.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
796	4864	WerFault.exe	80
3812	4864	WerFault.exe	80

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1660	DesktopLayer.exe
1660	DesktopLayer.exe
1660	DesktopLayer.exe
1660	DesktopLayer.exe
1660	DesktopLayer.exe
1660	DesktopLayer.exe
1660	DesktopLayer.exe
1660	DesktopLayer.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3836	iexplore.exe
3836	iexplore.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3100 wrote to memory of 4864	3100	rundll32.exe	80
PID 3100 wrote to memory of 4864	3100	rundll32.exe	80
PID 3100 wrote to memory of 4864	3100	rundll32.exe	80
PID 4864 wrote to memory of 2660	4864	rundll32.exe	83
PID 4864 wrote to memory of 2660	4864	rundll32.exe	83
PID 4864 wrote to memory of 2660	4864	rundll32.exe	83
PID 2660 wrote to memory of 1660	2660	rundll32Srv.exe	84
PID 2660 wrote to memory of 1660	2660	rundll32Srv.exe	84
PID 2660 wrote to memory of 1660	2660	rundll32Srv.exe	84
PID 1660 wrote to memory of 3836	1660	DesktopLayer.exe	86
PID 1660 wrote to memory of 3836	1660	DesktopLayer.exe	86
PID 4864 wrote to memory of 796	4864	rundll32.exe	88
PID 4864 wrote to memory of 796	4864	rundll32.exe	88
PID 4864 wrote to memory of 796	4864	rundll32.exe	88
PID 3836 wrote to memory of 332	3836	iexplore.exe	89
PID 3836 wrote to memory of 332	3836	iexplore.exe	89
PID 3836 wrote to memory of 332	3836	iexplore.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e33fdddf32359a0c4493b82a2b3b51d05f09913cd048f861a9f2793628221984.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3100
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e33fdddf32359a0c4493b82a2b3b51d05f09913cd048f861a9f2793628221984.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4864
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:2660
  - - 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:1660
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:3836
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3836 CREDAT:17410 /prefetch:2
        6⤵
        
        PID:332
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 608
    3⤵
    - Program crash
    PID:796
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 608
    3⤵
    - Program crash
    PID:3812

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4864 -ip 4864
1⤵
PID:3724

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

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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:\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
memory/1660-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2660-139-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4864-141-0x000000006D100000-0x000000006D11E000-memory.dmp

Filesize
120KB

Download

Analysis

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