ramnit | 4da942f1e8b45cf417c285a474ea689cd7531796b973d6273edfa0e9b79fe27a

General

Target

4da942f1e8b45cf417c285a474ea689cd7531796b973d6273edfa0e9b79fe27a.dll
Size

184KB
MD5

70ea5dd14af2025f122cd87d990f57b0
SHA1

74874ad0f3bf2c77e1eac1c8c582d3b36f29470a
SHA256

4da942f1e8b45cf417c285a474ea689cd7531796b973d6273edfa0e9b79fe27a
SHA512

a7d5719725a35b640f92fe8cd4803b1d4c6ebbb8307a779a5888805b5c2dc5c7397591deaf3c4abb8be1d34ac508d5599cceefe3083c2df38fec26e513b8c927
SSDEEP

3072:KpaDS2heyIqSrjWY9lLh0hcohU3fh+vRa0gVAK+hpJ:KQvhefbmYjKvRa/5+hpJ

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
1144	regsvr32Srv.exe
1752	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00140000000054ab-57.dat	upx
behavioral1/files/0x00140000000054ab-59.dat	upx
behavioral1/files/0x00140000000054ab-61.dat	upx
behavioral1/files/0x0009000000013402-62.dat	upx
behavioral1/memory/1144-65-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x0009000000013402-64.dat	upx
behavioral1/files/0x0009000000013402-67.dat	upx
behavioral1/memory/1752-68-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1012	regsvr32.exe
1144	regsvr32Srv.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32Srv.exe	regsvr32.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px9A2.tmp	regsvr32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	regsvr32Srv.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{04F3F7B1-5115-11ED-8B55-6651945CA213} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373103612"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe

Modifies registry class 2 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CAFEEFAC-0016-0000-0000-ABCDEFFEDCBA}\ = "Java Plug-in 1.6.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CAFEEFAC-0016-0000-0000-ABCDEFFEDCBA}	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1752	DesktopLayer.exe
1752	DesktopLayer.exe
1752	DesktopLayer.exe
1752	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2020	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2020	iexplore.exe
2020	iexplore.exe
520	IEXPLORE.EXE
520	IEXPLORE.EXE
520	IEXPLORE.EXE
520	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1912 wrote to memory of 1012	1912	regsvr32.exe	28
PID 1912 wrote to memory of 1012	1912	regsvr32.exe	28
PID 1912 wrote to memory of 1012	1912	regsvr32.exe	28
PID 1912 wrote to memory of 1012	1912	regsvr32.exe	28
PID 1912 wrote to memory of 1012	1912	regsvr32.exe	28
PID 1912 wrote to memory of 1012	1912	regsvr32.exe	28
PID 1912 wrote to memory of 1012	1912	regsvr32.exe	28
PID 1012 wrote to memory of 1144	1012	regsvr32.exe	29
PID 1012 wrote to memory of 1144	1012	regsvr32.exe	29
PID 1012 wrote to memory of 1144	1012	regsvr32.exe	29
PID 1012 wrote to memory of 1144	1012	regsvr32.exe	29
PID 1144 wrote to memory of 1752	1144	regsvr32Srv.exe	30
PID 1144 wrote to memory of 1752	1144	regsvr32Srv.exe	30
PID 1144 wrote to memory of 1752	1144	regsvr32Srv.exe	30
PID 1144 wrote to memory of 1752	1144	regsvr32Srv.exe	30
PID 1752 wrote to memory of 2020	1752	DesktopLayer.exe	31
PID 1752 wrote to memory of 2020	1752	DesktopLayer.exe	31
PID 1752 wrote to memory of 2020	1752	DesktopLayer.exe	31
PID 1752 wrote to memory of 2020	1752	DesktopLayer.exe	31
PID 2020 wrote to memory of 520	2020	iexplore.exe	33
PID 2020 wrote to memory of 520	2020	iexplore.exe	33
PID 2020 wrote to memory of 520	2020	iexplore.exe	33
PID 2020 wrote to memory of 520	2020	iexplore.exe	33

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4da942f1e8b45cf417c285a474ea689cd7531796b973d6273edfa0e9b79fe27a.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1912
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\4da942f1e8b45cf417c285a474ea689cd7531796b973d6273edfa0e9b79fe27a.dll
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1012
- - C:\Windows\SysWOW64\regsvr32Srv.exe
    C:\Windows\SysWOW64\regsvr32Srv.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - Suspicious use of WriteProcessMemory
    PID:1144
  - - 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:1752
    - - 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:2020
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2020 CREDAT:275457 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:520

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\U5N3T5TF.txt

Filesize
608B

MD5
4c58cc248e248d20556ca8cb1945bf01

SHA1
3a85dce25741deadbb8056ea3a78542b08d0f148

SHA256
9851c23f9c3a83ee0db93814b8a9c5cd42214a0852a443cb9912f6127b2c485a

SHA512
fdcf53ad0bc856b891405b52ea6dd598ad2a2073398e66607b77929bea24fd03a826e2215ebe181c11feff9031c9da96b3bf389ab2dc08be51dbdde63d8292c0

Download Submit
C:\Windows\SysWOW64\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Windows\SysWOW64\regsvr32Srv.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\regsvr32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1012-72-0x0000000000110000-0x0000000000112000-memory.dmp

Filesize
8KB

Download
memory/1012-56-0x00000000763F1000-0x00000000763F3000-memory.dmp

Filesize
8KB

Download
memory/1012-71-0x000000006D600000-0x000000006D630000-memory.dmp

Filesize
192KB

Download
memory/1012-69-0x000000006D600000-0x000000006D630000-memory.dmp

Filesize
192KB

Download
memory/1012-70-0x0000000000110000-0x000000000013E000-memory.dmp

Filesize
184KB

Download
memory/1144-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1752-68-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1912-54-0x000007FEFC1F1000-0x000007FEFC1F3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing