ramnit | 92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90

Analysis

max time kernel
139s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2022, 10:40

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General

Target

92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90.dll
Size

387KB
MD5

087ded1caa48db77756c6e2f804149c0
SHA1

d910b316af79e5094e0a8c3bcc4f05b951453e59
SHA256

92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90
SHA512

0a38353065075d4222080450053027e216f5bccb81e95f5b336bccace8db1204175ec2be5cfdfc7bd5edc42876ebcc1c280797f344286d64fab6c0f6cdc0c375
SSDEEP

12288:0uM4nc11eju169PkNROaHrmtccN4aE4m6:w0jr9PkopE4m

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
1132	rundll32Srv.exe
2116	DesktopLayer.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0009000000022dd5-134.dat	upx
behavioral2/files/0x0009000000022dd5-135.dat	upx
behavioral2/files/0x0009000000022dcd-137.dat	upx
behavioral2/memory/1132-138-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0009000000022dcd-139.dat	upx
behavioral2/memory/2116-140-0x0000000000400000-0x000000000042E000-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\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\px76DA.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997918"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30997918"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "846904716"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{5D3A9E0A-6991-11ED-B8D8-FAE5CAF4041A} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375795839"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "834404630"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997918"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "834404630"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2116	DesktopLayer.exe
2116	DesktopLayer.exe
2116	DesktopLayer.exe
2116	DesktopLayer.exe
2116	DesktopLayer.exe
2116	DesktopLayer.exe
2116	DesktopLayer.exe
2116	DesktopLayer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4180	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4180	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4180	iexplore.exe
4180	iexplore.exe
260	IEXPLORE.EXE
260	IEXPLORE.EXE
260	IEXPLORE.EXE
260	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 3520	1232	rundll32.exe	85
PID 1232 wrote to memory of 3520	1232	rundll32.exe	85
PID 1232 wrote to memory of 3520	1232	rundll32.exe	85
PID 3520 wrote to memory of 1132	3520	rundll32.exe	86
PID 3520 wrote to memory of 1132	3520	rundll32.exe	86
PID 3520 wrote to memory of 1132	3520	rundll32.exe	86
PID 1132 wrote to memory of 2116	1132	rundll32Srv.exe	87
PID 1132 wrote to memory of 2116	1132	rundll32Srv.exe	87
PID 1132 wrote to memory of 2116	1132	rundll32Srv.exe	87
PID 2116 wrote to memory of 4180	2116	DesktopLayer.exe	88
PID 2116 wrote to memory of 4180	2116	DesktopLayer.exe	88
PID 4180 wrote to memory of 260	4180	iexplore.exe	89
PID 4180 wrote to memory of 260	4180	iexplore.exe	89
PID 4180 wrote to memory of 260	4180	iexplore.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\92b8bc7045f8749d165db8d995089593097fa6fb1ef704410844e648c3b53a90.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3520
- - 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:1132
  - - 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:2116
    - - 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:4180
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4180 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:260

Network

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:\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/1132-138-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2116-140-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download