ramnit | 7d0eb3c271e15811bfce3acebdbe17cb7d91ed01b988092d050ab9b88bbf367f

General

Target

screenscrew.exe
Size

167KB
MD5

73d51997f201501a641743db5494f864
SHA1

01a10a3f7d3e62e70538273285f4f4ef75793465
SHA256

7d0eb3c271e15811bfce3acebdbe17cb7d91ed01b988092d050ab9b88bbf367f
SHA512

28549142ffc196a5b23110f1999f56c25491ab3c31f2a3896bdb57d8fcb852487fb3e7b648366f998decfbdb910aadf74036729d24660ab9a1972aea190310eb
SSDEEP

3072:A0J9QbLkewys+C6pNxFE7Z6wAOpw7DZ6/:Z9QboZyJp7xq6wAZU

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

Processes:

screenscrewSrv.exeDesktopLayer.exe

pid process

1720 screenscrewSrv.exe
1724 DesktopLayer.exe
Loads dropped DLL 2 IoCs

Processes:

screenscrew.exescreenscrewSrv.exe

pid process

832 screenscrew.exe
1720 screenscrewSrv.exe

pid	process
1720	screenscrewSrv.exe
1724	DesktopLayer.exe

pid	process
832	screenscrew.exe
1720	screenscrewSrv.exe

UPX packed file 9 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\screenscrewSrv.exe	upx
C:\Users\Admin\AppData\Local\Temp\screenscrewSrv.exe	upx
C:\Users\Admin\AppData\Local\Temp\screenscrewSrv.exe	upx
behavioral1/memory/1720-64-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/1724-72-0x0000000000400000-0x000000000042E000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
\Program Files (x86)\Microsoft\DesktopLayer.exe	upx

Drops file in Program Files directory 3 IoCs

Processes:

screenscrewSrv.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft\px10D3.tmp	screenscrewSrv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	screenscrewSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	screenscrewSrv.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{E35C8CD1-1814-11EE-8F40-CA9D3A953884} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1437583205-2177757337-340526699-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

DesktopLayer.exe

pid process

1724 DesktopLayer.exe
1724 DesktopLayer.exe
1724 DesktopLayer.exe
1724 DesktopLayer.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

568 iexplore.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

568 iexplore.exe
568 iexplore.exe
1548 IEXPLORE.EXE
1548 IEXPLORE.EXE

pid	process
1724	DesktopLayer.exe
1724	DesktopLayer.exe
1724	DesktopLayer.exe
1724	DesktopLayer.exe

pid	process
568	iexplore.exe

pid	process
568	iexplore.exe
568	iexplore.exe
1548	IEXPLORE.EXE
1548	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

screenscrew.exescreenscrewSrv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 832 wrote to memory of 1720	832	screenscrew.exe	screenscrewSrv.exe
PID 832 wrote to memory of 1720	832	screenscrew.exe	screenscrewSrv.exe
PID 832 wrote to memory of 1720	832	screenscrew.exe	screenscrewSrv.exe
PID 832 wrote to memory of 1720	832	screenscrew.exe	screenscrewSrv.exe
PID 1720 wrote to memory of 1724	1720	screenscrewSrv.exe	DesktopLayer.exe
PID 1720 wrote to memory of 1724	1720	screenscrewSrv.exe	DesktopLayer.exe
PID 1720 wrote to memory of 1724	1720	screenscrewSrv.exe	DesktopLayer.exe
PID 1720 wrote to memory of 1724	1720	screenscrewSrv.exe	DesktopLayer.exe
PID 1724 wrote to memory of 568	1724	DesktopLayer.exe	iexplore.exe
PID 1724 wrote to memory of 568	1724	DesktopLayer.exe	iexplore.exe
PID 1724 wrote to memory of 568	1724	DesktopLayer.exe	iexplore.exe
PID 1724 wrote to memory of 568	1724	DesktopLayer.exe	iexplore.exe
PID 568 wrote to memory of 1548	568	iexplore.exe	IEXPLORE.EXE
PID 568 wrote to memory of 1548	568	iexplore.exe	IEXPLORE.EXE
PID 568 wrote to memory of 1548	568	iexplore.exe	IEXPLORE.EXE
PID 568 wrote to memory of 1548	568	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\screenscrew.exe
"C:\Users\Admin\AppData\Local\Temp\screenscrew.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:832

C:\Users\Admin\AppData\Local\Temp\screenscrewSrv.exe
C:\Users\Admin\AppData\Local\Temp\screenscrewSrv.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1720

C:\Program Files (x86)\Microsoft\DesktopLayer.exe
"C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1724

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe"
4⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:568

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:568 CREDAT:275457 /prefetch:2
5⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1548

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\New Text Document.txt
1⤵
PID:1932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

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:\Program Files (x86)\Microsoft\DesktopLayer.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\screenscrewSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\screenscrewSrv.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
\Users\Admin\AppData\Local\Temp\screenscrewSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/832-70-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/832-91-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/832-94-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/832-93-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/832-69-0x0000000000220000-0x000000000024E000-memory.dmp

Filesize
184KB

Download
memory/832-68-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/832-85-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/832-86-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/832-87-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/832-92-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/832-89-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/1720-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1724-72-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1724-88-0x0000000000230000-0x000000000023F000-memory.dmp

Filesize
60KB

Download
memory/1724-73-0x0000000000230000-0x000000000023F000-memory.dmp

Filesize
60KB

Download
memory/1724-67-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads