ramnit | c641a8d24354b0ed3cf3d21c21e8c6f58d969a667985f829edebbadcf84f32ec

Resubmissions

16-06-2022 11:45

220616-nwzzqahca6 10

16-06-2022 02:20

220616-cswmcafehr 10

Analysis

max time kernel
140s
max time network
179s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
16-06-2022 02:20

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General

Target

FtpSrv.exe
Size

124KB
MD5

3d32a10d3505697451519ed9578e349c
SHA1

c02e2cf2c18da681c0556b3d9259400864c85cee
SHA256

31972345438e370070d128c0564e5f1d2008a23edbf94549246597ced5755340
SHA512

7e1466d9f200163b50a1d7c5efa9bb7e12289f2535603c49d5e78c834858b4522b76f68494f3904d02bd8862a30f8ae49224a8c376076953f5f1362fa5e931e2

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:

FtpSrvSrv.exeDesktopLayer.exe

pid process

4756 FtpSrvSrv.exe
1740 DesktopLayer.exe

pid	process
4756	FtpSrvSrv.exe
1740	DesktopLayer.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\FtpSrvSrv.exe	upx
C:\Users\Admin\AppData\Local\Temp\FtpSrvSrv.exe	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral4/memory/4756-136-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral4/memory/1740-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
C:\Program Files (x86)\Microsoft\DesktopLayer.exe	upx
behavioral4/memory/1740-141-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

Processes:

FtpSrvSrv.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Microsoft\pxC0C4.tmp	FtpSrvSrv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	FtpSrvSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	FtpSrvSrv.exe

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{DFFE62ED-ED2B-11EC-B274-E2E53B72FDDE} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3080458741"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3080458741"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30966072"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30966072"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "362118303"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
1740	DesktopLayer.exe
1740	DesktopLayer.exe
1740	DesktopLayer.exe
1740	DesktopLayer.exe
1740	DesktopLayer.exe
1740	DesktopLayer.exe
1740	DesktopLayer.exe
1740	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

1588 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

1588 iexplore.exe
1588 iexplore.exe
2432 IEXPLORE.EXE
2432 IEXPLORE.EXE
2432 IEXPLORE.EXE
2432 IEXPLORE.EXE

pid	process
1588	iexplore.exe

pid	process
1588	iexplore.exe
1588	iexplore.exe
2432	IEXPLORE.EXE
2432	IEXPLORE.EXE
2432	IEXPLORE.EXE
2432	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

FtpSrv.exeFtpSrvSrv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 1956 wrote to memory of 4756	1956	FtpSrv.exe	FtpSrvSrv.exe
PID 1956 wrote to memory of 4756	1956	FtpSrv.exe	FtpSrvSrv.exe
PID 1956 wrote to memory of 4756	1956	FtpSrv.exe	FtpSrvSrv.exe
PID 4756 wrote to memory of 1740	4756	FtpSrvSrv.exe	DesktopLayer.exe
PID 4756 wrote to memory of 1740	4756	FtpSrvSrv.exe	DesktopLayer.exe
PID 4756 wrote to memory of 1740	4756	FtpSrvSrv.exe	DesktopLayer.exe
PID 1740 wrote to memory of 1588	1740	DesktopLayer.exe	iexplore.exe
PID 1740 wrote to memory of 1588	1740	DesktopLayer.exe	iexplore.exe
PID 1588 wrote to memory of 2432	1588	iexplore.exe	IEXPLORE.EXE
PID 1588 wrote to memory of 2432	1588	iexplore.exe	IEXPLORE.EXE
PID 1588 wrote to memory of 2432	1588	iexplore.exe	IEXPLORE.EXE

C:\Users\Admin\AppData\Local\Temp\FtpSrv.exe
"C:\Users\Admin\AppData\Local\Temp\FtpSrv.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1956

C:\Users\Admin\AppData\Local\Temp\FtpSrvSrv.exe
C:\Users\Admin\AppData\Local\Temp\FtpSrvSrv.exe
2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4756

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:1740

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:1588

C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1588 CREDAT:17410 /prefetch:2
5⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2432

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

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\FtpSrvSrv.exe
Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1740-134-0x0000000000000000-mapping.dmp

Download
memory/1740-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1740-140-0x0000000002030000-0x000000000203F000-memory.dmp

Filesize
60KB

Download
memory/1740-141-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1740-144-0x0000000002030000-0x000000000203F000-memory.dmp

Filesize
60KB

Download
memory/1956-130-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1956-142-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4756-136-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4756-137-0x0000000000580000-0x000000000058F000-memory.dmp

Filesize
60KB

Download
memory/4756-131-0x0000000000000000-mapping.dmp

Download
memory/4756-143-0x0000000000580000-0x000000000058F000-memory.dmp

Filesize
60KB

Download