ramnit | 33857e703b65a87ecefb4624607b8b28a47d96540d641dd29ad20a3e7ca81d5f

Analysis

max time kernel
131s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
21/11/2022, 11:07

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General

Target

33857e703b65a87ecefb4624607b8b28a47d96540d641dd29ad20a3e7ca81d5f.dll
Size

96KB
MD5

0a4566c77cbd26c01b34d1d7e6637ff0
SHA1

77a3a44c23d1767c130cd39d722ef0a592dd6857
SHA256

33857e703b65a87ecefb4624607b8b28a47d96540d641dd29ad20a3e7ca81d5f
SHA512

380635ef75177339b72bd1dee46925c1edd165ae6ab5f4889151638cf49ab0bc9084967044211b23d93ed83fbc86466951fe4e948f3f29e8f2353ccd970d0375
SSDEEP

3072:qD/1QkfFFFnHLidQXdoTfnUC6l/lJCCwRzlGDF7Gq7:qDSQXd8fnp6l/L7wRzm

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 1 IoCs

pid	Process
5084	rundll32mgr.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5084-137-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral2/memory/5084-139-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/5084-140-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/5084-141-0x0000000000400000-0x0000000000412000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3824	3204	WerFault.exe	76

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "375797459"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4220865260"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997921"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30997921"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "4198207981"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{2580F40F-6995-11ED-AECB-5EAE84113378} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "4198207981"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30997921"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
5084	rundll32mgr.exe
5084	rundll32mgr.exe
5084	rundll32mgr.exe
5084	rundll32mgr.exe
5084	rundll32mgr.exe
5084	rundll32mgr.exe
5084	rundll32mgr.exe
5084	rundll32mgr.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4484	iexplore.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5084	rundll32mgr.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4484	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4484	iexplore.exe
4484	iexplore.exe
4808	IEXPLORE.EXE
4808	IEXPLORE.EXE
4808	IEXPLORE.EXE
4808	IEXPLORE.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
5084	rundll32mgr.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1348 wrote to memory of 3204	1348	rundll32.exe	76
PID 1348 wrote to memory of 3204	1348	rundll32.exe	76
PID 1348 wrote to memory of 3204	1348	rundll32.exe	76
PID 3204 wrote to memory of 5084	3204	rundll32.exe	77
PID 3204 wrote to memory of 5084	3204	rundll32.exe	77
PID 3204 wrote to memory of 5084	3204	rundll32.exe	77
PID 5084 wrote to memory of 4484	5084	rundll32mgr.exe	80
PID 5084 wrote to memory of 4484	5084	rundll32mgr.exe	80
PID 4484 wrote to memory of 4808	4484	iexplore.exe	82
PID 4484 wrote to memory of 4808	4484	iexplore.exe	82
PID 4484 wrote to memory of 4808	4484	iexplore.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\33857e703b65a87ecefb4624607b8b28a47d96540d641dd29ad20a3e7ca81d5f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\33857e703b65a87ecefb4624607b8b28a47d96540d641dd29ad20a3e7ca81d5f.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3204
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:5084
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4484
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4484 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:4808
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 620
    3⤵
    - Program crash
    PID:3824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3204 -ip 3204
1⤵
PID:4224

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:\Windows\SysWOW64\rundll32mgr.exe

Filesize
54KB

MD5
fba9053e3a7f286a68a072f5d1b57b42

SHA1
19c4800e8de1e83ff7bf0b96a96563e8430ce9f3

SHA256
5675295a26c3839803fd25fb667f2be09c2b6bf3412202a09c3dfc9a46eb4ca4

SHA512
ee53bbd9531801df780279da49bd34863513db67fbacbd6b0abb844d02cb76f5e86ed39ad28585b27aa42d3659a8fc9f3d1459f92f81eca970e69bac7c403c64

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
54KB

MD5
fba9053e3a7f286a68a072f5d1b57b42

SHA1
19c4800e8de1e83ff7bf0b96a96563e8430ce9f3

SHA256
5675295a26c3839803fd25fb667f2be09c2b6bf3412202a09c3dfc9a46eb4ca4

SHA512
ee53bbd9531801df780279da49bd34863513db67fbacbd6b0abb844d02cb76f5e86ed39ad28585b27aa42d3659a8fc9f3d1459f92f81eca970e69bac7c403c64

Download Submit
memory/3204-133-0x0000000075750000-0x000000007576C000-memory.dmp

Filesize
112KB

Download
memory/3204-142-0x0000000075750000-0x000000007576C000-memory.dmp

Filesize
112KB

Download
memory/5084-137-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/5084-139-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/5084-140-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/5084-138-0x0000000000410000-0x0000000000419000-memory.dmp

Filesize
36KB

Download
memory/5084-141-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download