ramnit | bb31b7d88041fd0b6b88e0ec904fb82966c5f71c0e38a25e72ef59ef2e31ab42

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
26-12-2024 14:12

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General

Target

bb31b7d88041fd0b6b88e0ec904fb82966c5f71c0e38a25e72ef59ef2e31ab42N.dll
Size

124KB
MD5

499aa4864ba50002b898490ca3d59790
SHA1

5a45ae82032425b08ef15f594541233fc3f17957
SHA256

bb31b7d88041fd0b6b88e0ec904fb82966c5f71c0e38a25e72ef59ef2e31ab42
SHA512

dc3cb3c9f377052db3bce796148dbad708dbad4ec6fae5a3b9ef2e5853861684fe4e538141949d6124c1c92dcdf80573b1d7e3ffbf958dca8ef3487a2d99909c
SSDEEP

3072:VjulPbTM7VmKeZ88Dkj7oR2SqwKJXtf5DGyVBQwIY6X4i:VvcvZNDkYR2SqwK/AyVBQ9RIi

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 1 IoCs

pid	Process
1204	rundll32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1204-6-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-8-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-9-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-13-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-12-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-15-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-16-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-7-0x0000000000400000-0x000000000041A000-memory.dmp	upx
behavioral2/memory/1204-11-0x0000000000400000-0x000000000041A000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 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	rundll32mgr.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "884917987"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "889761525"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\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
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "441987296"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31152032"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31152032"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{6059FEF5-C393-11EF-A7EA-FE5A08828E79} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "884917987"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31152032"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1204	rundll32mgr.exe
1204	rundll32mgr.exe
1204	rundll32mgr.exe
1204	rundll32mgr.exe
1204	rundll32mgr.exe
1204	rundll32mgr.exe
1204	rundll32mgr.exe
1204	rundll32mgr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1204	rundll32mgr.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1724	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1724	iexplore.exe
1724	iexplore.exe
2976	IEXPLORE.EXE
2976	IEXPLORE.EXE
2976	IEXPLORE.EXE
2976	IEXPLORE.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1204	rundll32mgr.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 2220	4100	rundll32.exe	83
PID 4100 wrote to memory of 2220	4100	rundll32.exe	83
PID 4100 wrote to memory of 2220	4100	rundll32.exe	83
PID 2220 wrote to memory of 1204	2220	rundll32.exe	84
PID 2220 wrote to memory of 1204	2220	rundll32.exe	84
PID 2220 wrote to memory of 1204	2220	rundll32.exe	84
PID 1204 wrote to memory of 1724	1204	rundll32mgr.exe	85
PID 1204 wrote to memory of 1724	1204	rundll32mgr.exe	85
PID 1724 wrote to memory of 2976	1724	iexplore.exe	86
PID 1724 wrote to memory of 2976	1724	iexplore.exe	86
PID 1724 wrote to memory of 2976	1724	iexplore.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bb31b7d88041fd0b6b88e0ec904fb82966c5f71c0e38a25e72ef59ef2e31ab42N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bb31b7d88041fd0b6b88e0ec904fb82966c5f71c0e38a25e72ef59ef2e31ab42N.dll,#1
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2220
- - C:\Windows\SysWOW64\rundll32mgr.exe
    C:\Windows\SysWOW64\rundll32mgr.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:1204
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1724
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1724 CREDAT:17410 /prefetch:2
        5⤵
        System Location Discovery: System Language Discovery
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:2976

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
863881560832be6db3d7e95507b796d8

SHA1
bab29c682b73454cb94d1a0edfaae5fd64d076f6

SHA256
1b8c898d463e9947656d97610caa6068a39c17fae72baa9168113364b7f70063

SHA512
0556ac3e08e23d12ba2558e3e1320f8c7591359a003c6b98e3d93208361000c3fc25dc13e9f4a3575ef854bd903b32f62a36e541ba10de67f38663d8d8debbcb

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

Filesize
404B

MD5
960fcbf214869e1ab0de956e1e9d29b4

SHA1
088bf38dc86b9d0cf2e067b5f3a5368e1d580b74

SHA256
3ee7ee1c2bf8eb132fdc0b7a886c6094ccca8d057b1897b7b56ce413a6fca8ca

SHA512
d4d6cf9b2058fefe845ffc2bda77fba2abb8123001e25681176d90760f46e51a8d650c80c2a5bff2edd75f8c620ea1c36e2bcb06bc66debb4a8a18d8449b387e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VKYZDMA5\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
88KB

MD5
fe76e62c9c90a4bea8f2c464dc867719

SHA1
f0935e8b6c22dea5c6e9d4127f5c10363deba541

SHA256
5705c47b229c893f67741480ed5e3bce60597b2bb0dd755fb1f499a23888d7d6

SHA512
7d6d5bfb10df493ffea7132807be417b5a283d34a1cd49042390b2b927691fd53ecf8eee459c727844395f34e4230b2cd85b38b7fb7df0a3638b244d0c3f6394

Download Submit
memory/1204-15-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-10-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/1204-13-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-12-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-4-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1204-14-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1204-17-0x0000000077272000-0x0000000077273000-memory.dmp

Filesize
4KB

Download
memory/1204-16-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-7-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-11-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-9-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-8-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1204-6-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/2220-1-0x0000000010000000-0x000000001001F000-memory.dmp

Filesize
124KB

Download