ramnit | df1cfb0304da20e931a5d8e974e82461e9f435720cefa0b0d4143aa948333934

Analysis

max time kernel
91s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
28/10/2022, 20:04 UTC

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General

Target

df1cfb0304da20e931a5d8e974e82461e9f435720cefa0b0d4143aa948333934.dll
Size

228KB
MD5

0b9dc555cc3576908a238763445354c0
SHA1

f9a0a140311bb921d22a860f755d1f3e4e734f62
SHA256

df1cfb0304da20e931a5d8e974e82461e9f435720cefa0b0d4143aa948333934
SHA512

f4494f627a49bdd9069c4d0a024e84b14dd8e313d565177990f043efedda17a0982a06b4cb383c5e1fea89ec09a65f647543b94f80a50c9c0a9546eed555b28d
SSDEEP

3072:Aen8Z3LQF3u/RvsU5ItqFjpgXJjbVor64Yfpijb745PzR+4S4T3oX1hIcQI7SpQv:F8ZbswvsUiQu/orN/4hvSPFhItQB

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
444	rundll32Srv.exe
996	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0004000000022dbd-134.dat	upx
behavioral2/files/0x0004000000022dbd-135.dat	upx
behavioral2/files/0x0005000000022dc0-137.dat	upx
behavioral2/memory/444-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0005000000022dc0-139.dat	upx
behavioral2/memory/996-140-0x0000000000400000-0x000000000042E000-memory.dmp	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 opened for modification	C:\Program Files (x86)\Microsoft\pxB664.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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2176	4228	WerFault.exe	81

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2109239231"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30993172"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{A904FFE7-5707-11ED-A0EE-7ADCB3813C8F} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2123461075"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "373757570"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30993172"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30993172"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2109239231"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
996	DesktopLayer.exe
996	DesktopLayer.exe
996	DesktopLayer.exe
996	DesktopLayer.exe
996	DesktopLayer.exe
996	DesktopLayer.exe
996	DesktopLayer.exe
996	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1284	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1284	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1284	iexplore.exe
1284	iexplore.exe
3976	IEXPLORE.EXE
3976	IEXPLORE.EXE
3976	IEXPLORE.EXE
3976	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3540 wrote to memory of 4228	3540	rundll32.exe	81
PID 3540 wrote to memory of 4228	3540	rundll32.exe	81
PID 3540 wrote to memory of 4228	3540	rundll32.exe	81
PID 4228 wrote to memory of 444	4228	rundll32.exe	83
PID 4228 wrote to memory of 444	4228	rundll32.exe	83
PID 4228 wrote to memory of 444	4228	rundll32.exe	83
PID 444 wrote to memory of 996	444	rundll32Srv.exe	84
PID 444 wrote to memory of 996	444	rundll32Srv.exe	84
PID 444 wrote to memory of 996	444	rundll32Srv.exe	84
PID 996 wrote to memory of 1284	996	DesktopLayer.exe	86
PID 996 wrote to memory of 1284	996	DesktopLayer.exe	86
PID 1284 wrote to memory of 3976	1284	iexplore.exe	88
PID 1284 wrote to memory of 3976	1284	iexplore.exe	88
PID 1284 wrote to memory of 3976	1284	iexplore.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\df1cfb0304da20e931a5d8e974e82461e9f435720cefa0b0d4143aa948333934.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3540
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\df1cfb0304da20e931a5d8e974e82461e9f435720cefa0b0d4143aa948333934.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4228
- - 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:444
  - - 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:996
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1284
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1284 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3976
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4228 -s 620
    3⤵
    - Program crash
    PID:2176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 348 -p 4228 -ip 4228
1⤵
PID:856

Network

DNS

api.bing.com

iexplore.exe

Remote address:

8.8.8.8:53

Request

api.bing.com

IN A

Response

api.bing.com

IN CNAME

api-bing-com.e-0001.e-msedge.net

api-bing-com.e-0001.e-msedge.net

IN CNAME

e-0001.e-msedge.net

e-0001.e-msedge.net

IN A

13.107.5.80

20.189.173.5:443

322 B
7
8.253.208.120:80

322 B
7
8.253.208.120:80

322 B
7
8.253.208.120:80

322 B
7
204.79.197.200:443

ieonline.microsoft.com

iexplore.exe

156 B
3
204.79.197.200:443

ieonline.microsoft.com

tls, http2

iexplore.exe

1.5kB
8.1kB
15
14
8.253.208.120:80

46 B
40 B
1
1
8.253.208.120:80

46 B
40 B
1
1

8.8.8.8:53

api.bing.com

dns

iexplore.exe

58 B
134 B
1
1

DNS Request

api.bing.com

DNS Response

13.107.5.80

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

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:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
4f630c01f9bf4c57d049a46ea616203c

SHA1
a2d06f097a95d9096f7e381d39e982c0c29aac25

SHA256
217bc1b6fd8b9b5987d428f164bde885ce60d24db297abd86c177e8595c30793

SHA512
1ae68ac255fe9b2c517425e8642fb630c178ea261e6e844fc27d7a9f8d3e6c92da594549284622aee09b96540e9fc6086fa32ba7f66c794c1c983ed7c526af45

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

Filesize
434B

MD5
fc52f58401119ff06b20fd80311e1a0c

SHA1
a2feba1c3b85307ce42aa66787a35044e251dcdc

SHA256
5a71bae737a6725bad5e13932bfc0522e4b642a8206f54cbd66eed29bf8d8d0b

SHA512
06632dc4e74a5ae4ecdaea8c636f0d07694b2669284d6e114df953e43252308c9d0bb1465c2d695167514d494efb115976aa35f208add37593d6e40863a17d4a

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/444-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/996-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4228-141-0x00000000752D0000-0x0000000075314000-memory.dmp

Filesize
272KB

Download