ramnit | c2bf0e8ed1ece709e72fecbc77de72fba47ebf655d29240b1628a8ea8c2efb97

Analysis

max time kernel
93s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18/11/2024, 23:30

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General

Target
c2bf0e8ed1ece709e72fecbc77de72fba47ebf655d29240b1628a8ea8c2efb97.dll
Size 116KB
Sample241118-3g5c8ayarn
SHA256 c2bf0e8ed1ece709e72fecbc77de72fba47ebf655d29240b1628a8ea8c2efb97
MD5 89f8e9f21a829ebf8dd2955a3c7562c9
SHA1 a195f2b264b3389db0d82fd226d1382e32cbcbc7
SHA512 3d67a42ef7724e8a0c1f834909e89c62b9383f2ce1c3a313c832963233f8eb15bb2302a38ef8e2d837dc1c6edf9333095e76c33b888c0fd19018688209a27539
SSDEEP 1536:juTLBvTKbySZyICNoOk619WQaJVYNyA3M1xgbbKEBQxK74G5BIq5ewYYNv:jc4bygyICNoOXnWQOVYNg9EQxa7w2v
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

ramnit banker discovery 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
Ramnit family
ramnit

Executes dropped EXE 2 IoCs

pid	Process
784	rundll32Srv.exe
1508	DesktopLayer.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000c000000023b8b-3.dat	upx
behavioral2/memory/784-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/784-8-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1508-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/1508-15-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px8DC9.tmp	rundll32Srv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	rundll32Srv.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5040	5088	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32Srv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DesktopLayer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IEXPLORE.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3775797282"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144465"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3775797282"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "438737584"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{0C87F16B-A605-11EF-AF2A-CEB9D96D8528} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31144465"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3782516011"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31144465"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\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

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1508	DesktopLayer.exe
1508	DesktopLayer.exe
1508	DesktopLayer.exe
1508	DesktopLayer.exe
1508	DesktopLayer.exe
1508	DesktopLayer.exe
1508	DesktopLayer.exe
1508	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3468	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3468	iexplore.exe
3468	iexplore.exe
4836	IEXPLORE.EXE
4836	IEXPLORE.EXE
4836	IEXPLORE.EXE
4836	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 5088	2364	rundll32.exe	83
PID 2364 wrote to memory of 5088	2364	rundll32.exe	83
PID 2364 wrote to memory of 5088	2364	rundll32.exe	83
PID 5088 wrote to memory of 784	5088	rundll32.exe	84
PID 5088 wrote to memory of 784	5088	rundll32.exe	84
PID 5088 wrote to memory of 784	5088	rundll32.exe	84
PID 784 wrote to memory of 1508	784	rundll32Srv.exe	86
PID 784 wrote to memory of 1508	784	rundll32Srv.exe	86
PID 784 wrote to memory of 1508	784	rundll32Srv.exe	86
PID 1508 wrote to memory of 3468	1508	DesktopLayer.exe	87
PID 1508 wrote to memory of 3468	1508	DesktopLayer.exe	87
PID 3468 wrote to memory of 4836	3468	iexplore.exe	90
PID 3468 wrote to memory of 4836	3468	iexplore.exe	90
PID 3468 wrote to memory of 4836	3468	iexplore.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\c2bf0e8ed1ece709e72fecbc77de72fba47ebf655d29240b1628a8ea8c2efb97.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\c2bf0e8ed1ece709e72fecbc77de72fba47ebf655d29240b1628a8ea8c2efb97.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5088
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:784
  - - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
      "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:1508
    - - 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:3468
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3468 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4836
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5088 -s 620
    3⤵
    - Program crash
    PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5088 -ip 5088
1⤵
PID:3376

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 471B
SHA256 7f877563622aeda07395133fb7c81746df3389c360549e2309c161c8a394d9bf
MD5 cdfebcd84ff934bb577a1d3a07a3ccad
SHA1 5092f452374bb3943b00cf53bcad7a92215bae87
SHA512 605a455017dc67d6257a5b434ce9a8df8fbac30dcf6e45856c823ee9998f4008ae08947129a23d88c222c866a06192c2e75374880fe8b67d591816492ae4f56b
MD5 SHA1 SHA512

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7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776
Size 404B
SHA256 560014acfb49e0d6a6084f4e5cd079a7a044420bc9e15c12205cbd5c38385864
MD5 b278c116ba386dc981bfa2d1932975cc
SHA1 9ff495486ec0204d899972df9d4db19c58c0367b
SHA512 42c98b4609692c782b4db8b6b7b9f9af21348d4b412cff90346340f99b412cbf297436f4915b59b68f5fe2e089282293fe6a2b7799d65d85b94ee323a31b651c
MD5 SHA1 SHA512

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suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\DQ67RYHS\suggestions[1].en-US
Size 17KB
SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
MD5 5a34cb996293fde2cb7a4ac89587393a
SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
MD5 SHA1 SHA512 SSDEEP

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rundll32Srv.exe

Path C:\Windows\SysWOW64\rundll32Srv.exe
Size 55KB
SHA256 fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320
MD5 ff5e1f27193ce51eec318714ef038bef
SHA1 b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6
SHA512 c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a
SSDEEP 1536:Q+hzRsibKplyXTq8OGRnsPFG+RODTb7MXL5uXZnzE:bROzoTq0+RO7IwnY
MD5 SHA1 SHA512 SSDEEP

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memory/784-4-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/784-8-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/784-5-0x0000000000440000-0x000000000044F000-memory.dmp

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memory/1508-13-0x0000000000520000-0x0000000000521000-memory.dmp

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memory/1508-14-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/1508-15-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/5088-0-0x0000000010000000-0x0000000010020000-memory.dmp

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memory/5088-17-0x0000000010000000-0x0000000010020000-memory.dmp

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