ramnit | 92841529a6340247a39af669a773edf04da13b2c8447654f266c4bf62e230b86

Analysis

max time kernel
93s
max time network
112s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-11-2024 15:14

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General

Target

92841529a6340247a39af669a773edf04da13b2c8447654f266c4bf62e230b86N.dll
Size

713KB
MD5

c30c6c337c226acfddcde612a7094100
SHA1

327d1ccbd4d45a4dabc7b1274e7d30ec9a7ffe9e
SHA256

92841529a6340247a39af669a773edf04da13b2c8447654f266c4bf62e230b86
SHA512

69e0038a8f59a18b67988e59ce9acedb7b929a6c7c978f9b233aeaf26e3ab4125321afa858d76dd63abc1a3a6c1597a3dc645dd343c8aa402dffc4c00c87600d
SSDEEP

12288:uzb9rMfc+CKUQyUmjtc4euuzPrs9pGp8hunWoopooK9kwPZNIrLGDY:uzb1MlCKUQyUmjtczu6Prs9pgWoopoof

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
4960	rundll32Srv.exe
3940	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/memory/4960-5-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral2/files/0x000a000000023bef-4.dat	upx
behavioral2/memory/4960-7-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral2/memory/3940-13-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral2/memory/3940-15-0x0000000000400000-0x000000000042C000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px86F3.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

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 30 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4095136444"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142384"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "437843832"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4092323619"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{1F6CE744-9DE4-11EF-BDBF-E6FB6C85BB83} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31142384"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\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-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4092323619"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31142384"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3940	DesktopLayer.exe
3940	DesktopLayer.exe
3940	DesktopLayer.exe
3940	DesktopLayer.exe
3940	DesktopLayer.exe
3940	DesktopLayer.exe
3940	DesktopLayer.exe
3940	DesktopLayer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3260	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3260	iexplore.exe
3260	iexplore.exe
3300	IEXPLORE.EXE
3300	IEXPLORE.EXE
3300	IEXPLORE.EXE
3300	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 4428	2176	rundll32.exe	83
PID 2176 wrote to memory of 4428	2176	rundll32.exe	83
PID 2176 wrote to memory of 4428	2176	rundll32.exe	83
PID 4428 wrote to memory of 4960	4428	rundll32.exe	84
PID 4428 wrote to memory of 4960	4428	rundll32.exe	84
PID 4428 wrote to memory of 4960	4428	rundll32.exe	84
PID 4960 wrote to memory of 3940	4960	rundll32Srv.exe	85
PID 4960 wrote to memory of 3940	4960	rundll32Srv.exe	85
PID 4960 wrote to memory of 3940	4960	rundll32Srv.exe	85
PID 3940 wrote to memory of 3260	3940	DesktopLayer.exe	86
PID 3940 wrote to memory of 3260	3940	DesktopLayer.exe	86
PID 3260 wrote to memory of 3300	3260	iexplore.exe	87
PID 3260 wrote to memory of 3300	3260	iexplore.exe	87
PID 3260 wrote to memory of 3300	3260	iexplore.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\92841529a6340247a39af669a773edf04da13b2c8447654f266c4bf62e230b86N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\92841529a6340247a39af669a773edf04da13b2c8447654f266c4bf62e230b86N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4428
- - 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:4960
  - - 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:3940
    - - 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:3260
      - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3260 CREDAT:17410 /prefetch:2
        6⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:3300

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

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

Filesize
471B

MD5
ee5fe122ed7f86c205655b9cba8c9138

SHA1
e336589d24be98c05a47ad93daf11ab568dea58b

SHA256
e4980b849930ff5ad2572d98efa45c128edad97927f4519a3ad8f037787b7be5

SHA512
1d0a1901f19a14173ef483d4c4cdb7ab6716bf2bec26cdefa22f1c4b661e592daea02c6dc634ddbcdf18e2b30df171ad8b166428b5fe9ff3f2290da2378caed5

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

Filesize
404B

MD5
5b73dcf88800d6acc6be7dcb29ef311c

SHA1
d522d18b0494c50ca29508d7f051dd7d108238fd

SHA256
94bd879c75cfc2daf3082fb84229ee924eebe972d6324ecd5f8f6ff99fc1d56a

SHA512
9af66aa2e4afd270731f1c8567b765eff102f165ba28412020e182b68182c20f37517b64b070923ea59e8392e02c170f9dc45b10c1d4aedcc264c25aaa055d4c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\6IJLDY7V\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
56KB

MD5
83f5a64a268f21c7c6d6dd54ce8a88c2

SHA1
61376a625d7d389c5c1646aa534f1ef3135da2f4

SHA256
c0b96c44a00557b60df0fa0ac9b129ac07d5b93c669f4a3c98276d113ff6962c

SHA512
4cddbd07e10c93d23efd1560084f0482520f90f252d6e90380222f0d13ac3bf3587fbddb3033a6b06d550838731db072001197cb3283e4686f5b8bd5b6d894f1

Download Submit
memory/3940-13-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3940-14-0x00000000007C0000-0x00000000007C1000-memory.dmp

Filesize
4KB

Download
memory/3940-15-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4428-0-0x0000000005000000-0x00000000050B8000-memory.dmp

Filesize
736KB

Download
memory/4428-17-0x0000000005000000-0x00000000050B8000-memory.dmp

Filesize
736KB

Download
memory/4960-5-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4960-6-0x00000000006A0000-0x00000000006B1000-memory.dmp

Filesize
68KB

Download
memory/4960-7-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

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