ramnit | 414d68f1148a3b596cef9291ebd25582017349216f259819c4d7c6c66dc4384d

General

Target

UnRAR.exe
Size

343KB
MD5

61719f5c7a2b004e5eeeb736432259cc
SHA1

ed6c92d8888d90b881f503129059eab6afadaae2
SHA256

c3c986d91d89bb66a99e6de6f19b1590a4e56534724c0a453b482c8f68886c94
SHA512

68b2947708523005c29e2d8cf9614f78ae39dd745acd15d0279bc6193dd20cc1051956dcd4660eeac843cadef1ece30ae1af576de9da2503cb9730f2bdda66ee

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:

UnRARSrv.exeDesktopLayer.exe

pid process

1120 UnRARSrv.exe
1776 DesktopLayer.exe

pid	process
1120	UnRARSrv.exe
1776	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\UnRARSrv.exe	upx
C:\Users\Admin\AppData\Local\Temp\UnRARSrv.exe	upx
C:\Users\Admin\AppData\Local\Temp\UnRARSrv.exe	upx
\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral5/memory/1120-65-0x0000000000400000-0x000000000042E000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral5/memory/1776-68-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

UnRAR.exeUnRARSrv.exe

pid process

1220 UnRAR.exe
1120 UnRARSrv.exe

pid	process
1220	UnRAR.exe
1120	UnRARSrv.exe

Drops file in Program Files directory 3 IoCs

Processes:

UnRARSrv.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft\px53EB.tmp	UnRARSrv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	UnRARSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	UnRARSrv.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{E53D7CE1-FEC4-11EC-95E2-F2A7A8855ABA} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "364053208"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

DesktopLayer.exe

pid process

1776 DesktopLayer.exe
1776 DesktopLayer.exe
1776 DesktopLayer.exe
1776 DesktopLayer.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1800 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1800 iexplore.exe
1800 iexplore.exe
1388 IEXPLORE.EXE
1388 IEXPLORE.EXE
1388 IEXPLORE.EXE
1388 IEXPLORE.EXE

pid	process
1776	DesktopLayer.exe
1776	DesktopLayer.exe
1776	DesktopLayer.exe
1776	DesktopLayer.exe

pid	process
1800	iexplore.exe

pid	process
1800	iexplore.exe
1800	iexplore.exe
1388	IEXPLORE.EXE
1388	IEXPLORE.EXE
1388	IEXPLORE.EXE
1388	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

UnRAR.exeUnRARSrv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 1220 wrote to memory of 1120	1220	UnRAR.exe	UnRARSrv.exe
PID 1220 wrote to memory of 1120	1220	UnRAR.exe	UnRARSrv.exe
PID 1220 wrote to memory of 1120	1220	UnRAR.exe	UnRARSrv.exe
PID 1220 wrote to memory of 1120	1220	UnRAR.exe	UnRARSrv.exe
PID 1120 wrote to memory of 1776	1120	UnRARSrv.exe	DesktopLayer.exe
PID 1120 wrote to memory of 1776	1120	UnRARSrv.exe	DesktopLayer.exe
PID 1120 wrote to memory of 1776	1120	UnRARSrv.exe	DesktopLayer.exe
PID 1120 wrote to memory of 1776	1120	UnRARSrv.exe	DesktopLayer.exe
PID 1776 wrote to memory of 1800	1776	DesktopLayer.exe	iexplore.exe
PID 1776 wrote to memory of 1800	1776	DesktopLayer.exe	iexplore.exe
PID 1776 wrote to memory of 1800	1776	DesktopLayer.exe	iexplore.exe
PID 1776 wrote to memory of 1800	1776	DesktopLayer.exe	iexplore.exe
PID 1800 wrote to memory of 1388	1800	iexplore.exe	IEXPLORE.EXE
PID 1800 wrote to memory of 1388	1800	iexplore.exe	IEXPLORE.EXE
PID 1800 wrote to memory of 1388	1800	iexplore.exe	IEXPLORE.EXE
PID 1800 wrote to memory of 1388	1800	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\UnRAR.exe
"C:\Users\Admin\AppData\Local\Temp\UnRAR.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1220

C:\Users\Admin\AppData\Local\Temp\UnRARSrv.exe
C:\Users\Admin\AppData\Local\Temp\UnRARSrv.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1120

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:1776

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:1800

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1800 CREDAT:275457 /prefetch:2
5⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1388

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

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:\Users\Admin\AppData\Local\Temp\UnRARSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\PTX9UTF3.txt
Filesize
604B

MD5
01c935a3bae7929eb033129998813373

SHA1
4d93f838dbe65692b34a131cc8957252e595cca2

SHA256
d8a7fb59a06b5798b077ca793eefc8fb55972d3536a8f21322c514517763463a

SHA512
f09152d7349b60df9ba6e0a1c72d117371fd2fd46111844de26c795ba2bf93c7f07e09c60efbb8cfb321f293d98c6d5333437ac807a3846ab599eeb377ea0e3f

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\UnRARSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1120-56-0x0000000000000000-mapping.dmp

Download
memory/1120-65-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1220-54-0x0000000075F61000-0x0000000075F63000-memory.dmp

Filesize
8KB

Download
memory/1220-60-0x0000000001130000-0x000000000119F000-memory.dmp

Filesize
444KB

Download
memory/1220-61-0x0000000000160000-0x000000000016D000-memory.dmp

Filesize
52KB

Download
memory/1776-63-0x0000000000000000-mapping.dmp

Download
memory/1776-68-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads