ramnit | 40ae5686af1d386286a4087e18640a47e9a1406f724207c1988c8d118b4be384

Analysis

max time kernel
164s
max time network
201s
platform
windows7_x64
resource
win7-20220414-en
submitted
08-07-2022 15:13

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General

Target

12ykgyy/download/MiniThunderPlatform.exe
Size

266KB
MD5

5761b0b1f4ba56ef156a8848d1c214cf
SHA1

bea7e9a95457ab67cda2e75757facdeaf88b3cff
SHA256

f1a7a250356418e387d2827dd440b76326586621b4fdd837f8b327d16919827f
SHA512

8a8da092149da09d222ad236ef0f15738d0474fd0016300dda0c8fbc7eb5200a9eb3f90e8944ee5f805717cff247475ec3e0f928e7839daaab71507d34dd4af9

Score

10^/10

ramnit banker bootkit persistence 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:

MiniThunderPlatformSrv.exeDesktopLayer.exe

pid process

1344 MiniThunderPlatformSrv.exe
1708 DesktopLayer.exe

pid	process
1344	MiniThunderPlatformSrv.exe
1708	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\12ykgyy\download\MiniThunderPlatformSrv.exe	upx
C:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatformSrv.exe	upx
C:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatformSrv.exe	upx
\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral1/memory/1344-64-0x0000000000400000-0x000000000042E000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral1/memory/1708-70-0x0000000000400000-0x000000000042E000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx

Loads dropped DLL 2 IoCs

Processes:

MiniThunderPlatform.exeMiniThunderPlatformSrv.exe

pid process

904 MiniThunderPlatform.exe
1344 MiniThunderPlatformSrv.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

MiniThunderPlatform.exe

description ioc process

File opened for modification \??\PhysicalDrive0 MiniThunderPlatform.exe

pid	process
904	MiniThunderPlatform.exe
1344	MiniThunderPlatformSrv.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	MiniThunderPlatform.exe

Drops file in Program Files directory 3 IoCs

Processes:

MiniThunderPlatformSrv.exe

description	ioc	process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	MiniThunderPlatformSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	MiniThunderPlatformSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px931C.tmp	MiniThunderPlatformSrv.exe

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\DontShowMeThisDialogAgain	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\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "364076820"	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\FullScreen = "no"	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\IETld\LowMic	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\Toolbar	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
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\FileNames	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\BrowserEmulation\LowMic	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\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
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\Zoom	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\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	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\AdminActive\{DE4F2D21-FEFB-11EC-BE80-5AC3572C4626} = "0"	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\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

DesktopLayer.exe

pid process

1708 DesktopLayer.exe
1708 DesktopLayer.exe
1708 DesktopLayer.exe
1708 DesktopLayer.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1784 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1784 iexplore.exe
1784 iexplore.exe
1912 IEXPLORE.EXE
1912 IEXPLORE.EXE
1912 IEXPLORE.EXE
1912 IEXPLORE.EXE

pid	process
1708	DesktopLayer.exe
1708	DesktopLayer.exe
1708	DesktopLayer.exe
1708	DesktopLayer.exe

pid	process
1784	iexplore.exe

pid	process
1784	iexplore.exe
1784	iexplore.exe
1912	IEXPLORE.EXE
1912	IEXPLORE.EXE
1912	IEXPLORE.EXE
1912	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

MiniThunderPlatform.exeMiniThunderPlatformSrv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 904 wrote to memory of 1344	904	MiniThunderPlatform.exe	MiniThunderPlatformSrv.exe
PID 904 wrote to memory of 1344	904	MiniThunderPlatform.exe	MiniThunderPlatformSrv.exe
PID 904 wrote to memory of 1344	904	MiniThunderPlatform.exe	MiniThunderPlatformSrv.exe
PID 904 wrote to memory of 1344	904	MiniThunderPlatform.exe	MiniThunderPlatformSrv.exe
PID 1344 wrote to memory of 1708	1344	MiniThunderPlatformSrv.exe	DesktopLayer.exe
PID 1344 wrote to memory of 1708	1344	MiniThunderPlatformSrv.exe	DesktopLayer.exe
PID 1344 wrote to memory of 1708	1344	MiniThunderPlatformSrv.exe	DesktopLayer.exe
PID 1344 wrote to memory of 1708	1344	MiniThunderPlatformSrv.exe	DesktopLayer.exe
PID 1708 wrote to memory of 1784	1708	DesktopLayer.exe	iexplore.exe
PID 1708 wrote to memory of 1784	1708	DesktopLayer.exe	iexplore.exe
PID 1708 wrote to memory of 1784	1708	DesktopLayer.exe	iexplore.exe
PID 1708 wrote to memory of 1784	1708	DesktopLayer.exe	iexplore.exe
PID 1784 wrote to memory of 1912	1784	iexplore.exe	IEXPLORE.EXE
PID 1784 wrote to memory of 1912	1784	iexplore.exe	IEXPLORE.EXE
PID 1784 wrote to memory of 1912	1784	iexplore.exe	IEXPLORE.EXE
PID 1784 wrote to memory of 1912	1784	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatform.exe
"C:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatform.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Suspicious use of WriteProcessMemory
PID:904

C:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatformSrv.exe
C:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatformSrv.exe
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1344

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:1708

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:1784

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1784 CREDAT:275457 /prefetch:2
5⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:1912

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Modify Registry

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:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatformSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\12ykgyy\download\MiniThunderPlatformSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\6W0XATDP.txt
Filesize
604B

MD5
c06baa70f01d655692c8258246db356b

SHA1
cd5899301aea51c17b995c7c10c0ae77fd2e32b1

SHA256
9c20884935f95fac991d20a5caa7dc8d15ce7514cabbbdcbdf0e91838b46edb0

SHA512
7bdd6d65a4828efb4388b0ea223079e99250c962e814bc7764c074990f4a36df581c8342e28625a73f35b7536ee7cdef28c9a8fb6901ca86ce930c13686c547d

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\12ykgyy\download\MiniThunderPlatformSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/904-69-0x0000000000220000-0x0000000000285000-memory.dmp

Filesize
404KB

Download
memory/904-55-0x0000000000220000-0x0000000000285000-memory.dmp

Filesize
404KB

Download
memory/904-54-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download
memory/904-67-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/904-71-0x0000000000290000-0x000000000029A000-memory.dmp

Filesize
40KB

Download
memory/1344-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1344-58-0x0000000000000000-mapping.dmp

Download
memory/1708-63-0x0000000000000000-mapping.dmp

Download
memory/1708-70-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download