ramnit | cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
28/09/2026, 04:27

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General

Target
jaffacakes118_cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67.dll
Size 1.4MB
Sample260928-e3fd8avckf
SHA256 cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67
MD5 7ae887c2d7d7c4b24fe12751c4438a8a
SHA1 1daa69e0725345db8a5bc7db7e69a00337ede9a7
SHA512 222e74230c592694e5c07d252137b5c1c51c9816a997021fb8113090ce8e30ab24f61da2fce4557b4f751ea5bb37ad63bcd9dca814ba34eb68bae7782c8b3963
SSDEEP 24576:X/W7APovljdf31kdm74n8spGBDvYTkaw6cOiusZSS1PC4JTsKEIGF8:XIdxx74nyBDh6mSuCmTTEIn
TLSH
T123657B10EEC1C433E8B5017596FF9B656A3A91313B16C6D3A68438747A603E1B6363EF
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

adware banker bootkit discovery ramnit persistence spyware stealer trojan upx worm

Malware Config

Signatures

Family: 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
832	rundll32Srv.exe
4376	DesktopLayer.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

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00080000000243ca-3.dat	upx
behavioral1/memory/832-6-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/4376-14-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/4376-13-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/4376-16-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/memory/832-4-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px48BC.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
3188	4856	WerFault.exe	84

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

Modifies Internet Explorer settings 1 TTPs 24 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3343124847"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31280897"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31280897"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{F2575AE9-BAF4-11F1-895E-5E640711BF8A} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3344062156"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "497334638"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1846164713-4096795028-774071693-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4376	DesktopLayer.exe
4376	DesktopLayer.exe
4376	DesktopLayer.exe
4376	DesktopLayer.exe
4376	DesktopLayer.exe
4376	DesktopLayer.exe
4376	DesktopLayer.exe
4376	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4272	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4272	iexplore.exe
4272	iexplore.exe
3740	IEXPLORE.EXE
3740	IEXPLORE.EXE
3740	IEXPLORE.EXE
3740	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 4856	1892	rundll32.exe	84
PID 4856 wrote to memory of 832	4856	rundll32.exe	85
PID 832 wrote to memory of 4376	832	rundll32Srv.exe	86
PID 4376 wrote to memory of 4272	4376	DesktopLayer.exe	87
PID 4272 wrote to memory of 3740	4272	iexplore.exe	91

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\jaffacakes118_cb177a793c83958320939701daa48a58824c1166a9ad82a210163dd8cb996b67.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4856
- - 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:832
  - - 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:4376
    - - 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:4272
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4272 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3740
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 652
    3⤵
    - Program crash
    PID:3188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4856 -ip 4856
1⤵
PID:1740

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

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

E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959
Size 471B
SHA256 9a7fed9634a5a6a62eaf209f9c3409700aa608472ee08da036d4b4e5dc74f613
MD5 52533c85f54fe894b216056fdf8978bc
SHA1 eeea26cd4068b78dfc6d3e312875420760b4749e
SHA512 2fb31bc85ea79c5e908748cb597820ffe18d6a37d47e2d41a0b8ec352e3c69b0d6f74329bb6de68b8f7a1c375aec9599b9aabfbe365672c23866244345fe4e48
TLSH
T189F09E93A4F9DC50DD4B4BFC257C86C53430A5BF5498815E643808D2595971E660F436
MD5 SHA1 SHA512 TLSH

Submit Download

E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_430EA0912164D1B129D6E1DC07C63959
Size 416B
SHA256 5b7c2983145b8fa72a25196fee659f4df1e2f435b1cadcecedbbf8ef3e389c8f
MD5 506d3d11654eae047f8d0bad317f42f8
SHA1 b7f01e472c6ea0c66a1251919b8345d002b68b8a
SHA512 8d56e67f8f37a3a0c121946c4182033feddcf8fbe09830c140fc089b85a315fdedbe202ecb78e8c70116c8d57d749a120d38ded284ae3001ae8d8cfd6be2510e
TLSH
T151E0203415F7411FF5F4E835CFD975255569F1261439E3B8AED45B04A702640AC12A26
MD5 SHA1 SHA512 TLSH

Submit Download

suggestions[1].en-US

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VIJY9X14\suggestions[1].en-US
Size 17KB
SHA256 c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad
MD5 5a34cb996293fde2cb7a4ac89587393a
SHA1 3c96c993500690d1a77873cd62bc639b3a10653f
SHA512 e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee
SSDEEP 384:K4gN8sGygaEKfWYSJUKbO7UckxtBjCdY7mO3D0C5l+piEieDSV126ry1/XSGKwG3:K4gNFXiKfWfJ1Kockxbd7mAt5Mp5ie2F
TLSH
T13A823E4E61D88F57EA47B6B2D9084EA702E0C8794716DB93D62CFE63CDE33B25D02161
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

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
TLSH
T1EA43F2C6AE1903A2DF75053314E4C6B4CBA43C558B737A9EFA50002BFF89463A817F59
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/832-4-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/832-6-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/832-5-0x0000000000500000-0x000000000050F000-memory.dmp

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memory/4376-16-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4376-12-0x0000000000490000-0x0000000000491000-memory.dmp

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memory/4376-13-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4376-14-0x0000000000400000-0x000000000042E000-memory.dmp

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memory/4856-18-0x0000000075300000-0x000000007547A000-memory.dmp

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memory/4856-0-0x0000000075300000-0x000000007547A000-memory.dmp

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