ramnit | c65046f87d5ceebfe71df19347ce5e768354b4a160d9b9f5b4a753c5dab06ff2

Analysis

max time kernel
135s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25-05-2024 19:09

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General

Target

cg.dll
Size

4.7MB
MD5

b698513d3757545edc1328e6bea3eb15
SHA1

b8f3889dc32db6f9a8287b91d95952942743bfd0
SHA256

68d0bd4dbb3c1c26acc6a1c8741ec19f954b82571328edb3acd5bd2fd41bad82
SHA512

9c831c06130dd120012d3f5491c288682dfd8eda92813c83accefc2050b55ca42f71f965e182cfcb2666128041d7cdceaf03f8285d26d063bfcb909a3b24988e
SSDEEP

49152:8Pa020/OfOQka+NfXfkqa4B0vNv+sDEFs8cuO:8PP20/TvaUHkqaNWuEy

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:

rundll32Srv.exeDesktopLayer.exe

pid process

2792 rundll32Srv.exe
4928 DesktopLayer.exe

pid	process
2792	rundll32Srv.exe
4928	DesktopLayer.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
C:\Windows\SysWOW64\rundll32Srv.exe	upx
behavioral26/memory/2792-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral26/memory/2792-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral26/memory/4928-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral26/memory/4928-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\SysWOW64\rundll32Srv.exe rundll32.exe

description	ioc	process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Drops file in Program Files directory 3 IoCs

Processes:

rundll32Srv.exe

description	ioc	process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxE465.tmp	rundll32Srv.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2892 1760 WerFault.exe rundll32.exe

pid	pid_target	process	target process
2892	1760	WerFault.exe	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

Processes:

iexplore.exeIEXPLORE.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "423429177"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{6394DC74-1ACA-11EF-B8C0-F6C903454AA3} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31108823"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "939888316"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31108823"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "939888316"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31108823"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "945044975"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

DesktopLayer.exe

pid	process
4928	DesktopLayer.exe
4928	DesktopLayer.exe
4928	DesktopLayer.exe
4928	DesktopLayer.exe
4928	DesktopLayer.exe
4928	DesktopLayer.exe
4928	DesktopLayer.exe
4928	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

iexplore.exe

pid process

4552 iexplore.exe
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

iexplore.exeIEXPLORE.EXE

pid process

4552 iexplore.exe
4552 iexplore.exe
3952 IEXPLORE.EXE
3952 IEXPLORE.EXE
3952 IEXPLORE.EXE
3952 IEXPLORE.EXE

pid	process
4552	iexplore.exe

pid	process
4552	iexplore.exe
4552	iexplore.exe
3952	IEXPLORE.EXE
3952	IEXPLORE.EXE
3952	IEXPLORE.EXE
3952	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

rundll32.exerundll32.exerundll32Srv.exeDesktopLayer.exeiexplore.exe

description	pid	process	target process
PID 3268 wrote to memory of 1760	3268	rundll32.exe	rundll32.exe
PID 3268 wrote to memory of 1760	3268	rundll32.exe	rundll32.exe
PID 3268 wrote to memory of 1760	3268	rundll32.exe	rundll32.exe
PID 1760 wrote to memory of 2792	1760	rundll32.exe	rundll32Srv.exe
PID 1760 wrote to memory of 2792	1760	rundll32.exe	rundll32Srv.exe
PID 1760 wrote to memory of 2792	1760	rundll32.exe	rundll32Srv.exe
PID 2792 wrote to memory of 4928	2792	rundll32Srv.exe	DesktopLayer.exe
PID 2792 wrote to memory of 4928	2792	rundll32Srv.exe	DesktopLayer.exe
PID 2792 wrote to memory of 4928	2792	rundll32Srv.exe	DesktopLayer.exe
PID 4928 wrote to memory of 4552	4928	DesktopLayer.exe	iexplore.exe
PID 4928 wrote to memory of 4552	4928	DesktopLayer.exe	iexplore.exe
PID 4552 wrote to memory of 3952	4552	iexplore.exe	IEXPLORE.EXE
PID 4552 wrote to memory of 3952	4552	iexplore.exe	IEXPLORE.EXE
PID 4552 wrote to memory of 3952	4552	iexplore.exe	IEXPLORE.EXE

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cg.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3268
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cg.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1760
- - 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:2792
  - - 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:4928
    - - C:\Program Files\Internet Explorer\iexplore.exe
        
        "C:\Program Files\Internet Explorer\iexplore.exe"
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of FindShellTrayWindow
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4552
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4552 CREDAT:17410 /prefetch:2
        6⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3952
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1760 -s 608
    3⤵
    - Program crash
    PID:2892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1760 -ip 1760
1⤵
PID:980

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4440,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=1300 /prefetch:8
1⤵
PID:1532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
c41ab5352ba79baac9ac093dd7eb2500

SHA1
1ffb0e70f86845daba211aeda43cad539d34ffd3

SHA256
558e13bb7aa293569457e9703d2db37e8365e2ab670b2c3484ada9336ed24895

SHA512
ccebe3f11039e14d39d4102652669fd372d179778bf73fae0659dd01da569bbf850b273cd3a4e13dc77b3fd4fb4d84d01525ac3a0dcb23b297c733da10bc2ff0

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
404B

MD5
9842a412809573117d4b5c4ec22e81bd

SHA1
65e7ca887934cfd4d226786176d98ff3ca2a6f20

SHA256
d394978da2b2df3d171865be8e7a72e83210dec107e93739c3e69dcfd007a2f8

SHA512
2bebaee7c281d20c3f91bac50a171843165ebacf45213b3d97e7aac3ecb2b9619a241d1e7f35a1234c0bd4de06af2ab2d5a3720e9a2a4c76a089e1224289417a

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\YOJF4VYG\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/1760-2-0x000000006A000000-0x000000006A4C2000-memory.dmp

Filesize
4.8MB

Download
memory/1760-17-0x000000006A000000-0x000000006A4C2000-memory.dmp

Filesize
4.8MB

Download
memory/2792-4-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2792-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2792-5-0x00000000005A0000-0x00000000005AF000-memory.dmp

Filesize
60KB

Download
memory/4928-13-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/4928-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4928-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download