ramnit | 3f30d26b8e104e4c7b3bf2710a7ca8ac82c386e9f025bd868814240c6e304020

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/12/2023, 10:00

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General

Target

15afd7474e67c670eccb95ea356052e9.dll
Size

212KB
MD5

15afd7474e67c670eccb95ea356052e9
SHA1

4b5cfe87fa938639a1a9411908823479ab6fe4cd
SHA256

3f30d26b8e104e4c7b3bf2710a7ca8ac82c386e9f025bd868814240c6e304020
SHA512

e21bc5b97f688ede554685670bb076b421b1faadf28127c9f21b7fd73452b2daeaa0dcfe5050bb0b4b77a62cfcae82a2b04dbbaf1c24f7d7a735a57d50daf615
SSDEEP

3072:9dcQ2ZNMSQvbajUTUItjT68+xQoZZMPLItBjEWdvBQ0tM2:dATSOjUQKS/MzItzdvBQ0tT

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 2 IoCs

pid	Process
2252	rundll32mgr.exe
224	WaterMark.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2252-9-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/224-28-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/224-25-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2252-13-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2252-10-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2252-8-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2252-7-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2252-6-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/2252-5-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/224-34-0x0000000000400000-0x0000000000421000-memory.dmp	upx
behavioral2/memory/224-35-0x0000000000400000-0x0000000000421000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

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

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\px44C9.tmp	rundll32mgr.exe
File created	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe
File opened for modification	C:\Program Files (x86)\Microsoft\WaterMark.exe	rundll32mgr.exe

Program crash 1 IoCs

pid	pid_target	Process
3752	3852	WerFault.exe

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31078285"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31078285"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "838199263"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "963355252"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{5D9382AA-A380-11EE-9ECD-CAE9171F1CAB} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "838199263"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "410313197"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\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-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31078285"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe
224	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	224	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
5028	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
5028	iexplore.exe
5028	iexplore.exe
1196	IEXPLORE.EXE
1196	IEXPLORE.EXE
1196	IEXPLORE.EXE
1196	IEXPLORE.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2252	rundll32mgr.exe
224	WaterMark.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 3452	4952	rundll32.exe	14
PID 4952 wrote to memory of 3452	4952	rundll32.exe	14
PID 4952 wrote to memory of 3452	4952	rundll32.exe	14
PID 3452 wrote to memory of 2252	3452	rundll32.exe	17
PID 3452 wrote to memory of 2252	3452	rundll32.exe	17
PID 3452 wrote to memory of 2252	3452	rundll32.exe	17
PID 2252 wrote to memory of 224	2252	rundll32mgr.exe	25
PID 2252 wrote to memory of 224	2252	rundll32mgr.exe	25
PID 2252 wrote to memory of 224	2252	rundll32mgr.exe	25
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 3852	224	WaterMark.exe	24
PID 224 wrote to memory of 5028	224	WaterMark.exe	70
PID 224 wrote to memory of 5028	224	WaterMark.exe	70
PID 224 wrote to memory of 2840	224	WaterMark.exe	71
PID 224 wrote to memory of 2840	224	WaterMark.exe	71
PID 5028 wrote to memory of 1196	5028	iexplore.exe	72
PID 5028 wrote to memory of 1196	5028	iexplore.exe	72
PID 5028 wrote to memory of 1196	5028	iexplore.exe	72

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\15afd7474e67c670eccb95ea356052e9.dll,#1
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3452
- C:\Windows\SysWOW64\rundll32mgr.exe
  C:\Windows\SysWOW64\rundll32mgr.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2252
- - C:\Program Files (x86)\Microsoft\WaterMark.exe
    "C:\Program Files (x86)\Microsoft\WaterMark.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of UnmapMainImage
    - Suspicious use of WriteProcessMemory
    PID:224
  - - 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:5028
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:5028 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:1196
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      PID:2840

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\15afd7474e67c670eccb95ea356052e9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3852 -ip 3852
1⤵
PID:4556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3852 -s 84
1⤵
- Program crash
PID:3752

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
1⤵
PID:3852

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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:\Program Files (x86)\Microsoft\WaterMark.exe

Filesize
60KB

MD5
cd963c64ad0bea4ca85a4819f6eefed1

SHA1
d9cd6316cf3c6ce5ceec9694c2debc7b7981775f

SHA256
33c4b715dc8b183dff9aac65cc42c7f2c70658580b8e3d449878251482a5d906

SHA512
f7cd12c57eff3acf7c89b0e7b55dfa81623618a65d6c49b490c199cfe63ae9e858f2681c8ef1425d1e4b25f7b0bbd6d4a9d9788956c23f52fece3d5d79b5907e

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

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
memory/224-33-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/224-35-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/224-29-0x0000000077DA2000-0x0000000077DA3000-memory.dmp

Filesize
4KB

Download
memory/224-28-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/224-26-0x0000000000060000-0x0000000000061000-memory.dmp

Filesize
4KB

Download
memory/224-25-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/224-34-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/224-32-0x0000000077DA2000-0x0000000077DA3000-memory.dmp

Filesize
4KB

Download
memory/2252-12-0x00000000008F0000-0x00000000008F1000-memory.dmp

Filesize
4KB

Download
memory/2252-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2252-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2252-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2252-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2252-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2252-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2252-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3452-1-0x0000000010000000-0x0000000010037000-memory.dmp

Filesize
220KB

Download
memory/3852-31-0x0000000000C20000-0x0000000000C21000-memory.dmp

Filesize
4KB

Download
memory/3852-30-0x0000000000C40000-0x0000000000C41000-memory.dmp

Filesize
4KB

Download