ramnit | 45b3cc6cb61b35a26003b05e42a3f9ef7de7a38ff7b3cb81eb2a869d9a45dc81

Analysis

max time kernel
141s
max time network
144s
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 03:15

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General

Target

024dab1bc2d423977e5606a3c54b148e.dll
Size

212KB
MD5

024dab1bc2d423977e5606a3c54b148e
SHA1

312e084f25d15331025080c09170fed6cf7f032b
SHA256

45b3cc6cb61b35a26003b05e42a3f9ef7de7a38ff7b3cb81eb2a869d9a45dc81
SHA512

3f4da02eb2968a4b22ed96917dcfc522f2459f97030d20ea024319f15954f6f9ecf3483c7e78f134fbbad81ee9d99ef39d08d27f4cb1421d682afc82333c5754
SSDEEP

3072:En4cV8gf2u41Z5tKlwTj0l6E7KaOvh4tXV47T7c:24y8gOl24gl6Ewvetaw

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
208	rundll32mgr.exe
3956	WaterMark.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3956-15-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/208-9-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/3956-23-0x0000000000400000-0x0000000000426000-memory.dmp	upx
behavioral2/memory/3956-24-0x0000000000400000-0x0000000000426000-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\px4C7A.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
2076	4524	WerFault.exe

Modifies Internet Explorer settings 1 TTPs 33 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1897638238"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31078187"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1897638238"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\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-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "410271211"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{9C957E85-A31E-11EE-BD28-F68B0B0A1028} = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "1902793588"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31078187"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31078187"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31078187"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "1902793588"	IEXPLORE.EXE

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe
3956	WaterMark.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3956	WaterMark.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1432	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1432	iexplore.exe
1432	iexplore.exe
4064	IEXPLORE.EXE
4064	IEXPLORE.EXE
4064	IEXPLORE.EXE
4064	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 3104	2716	rundll32.exe	14
PID 2716 wrote to memory of 3104	2716	rundll32.exe	14
PID 2716 wrote to memory of 3104	2716	rundll32.exe	14
PID 3104 wrote to memory of 208	3104	rundll32.exe	25
PID 3104 wrote to memory of 208	3104	rundll32.exe	25
PID 3104 wrote to memory of 208	3104	rundll32.exe	25
PID 208 wrote to memory of 3956	208	rundll32mgr.exe	24
PID 208 wrote to memory of 3956	208	rundll32mgr.exe	24
PID 208 wrote to memory of 3956	208	rundll32mgr.exe	24
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 4524	3956	WaterMark.exe	23
PID 3956 wrote to memory of 1432	3956	WaterMark.exe	69
PID 3956 wrote to memory of 1432	3956	WaterMark.exe	69
PID 3956 wrote to memory of 3712	3956	WaterMark.exe	70
PID 3956 wrote to memory of 3712	3956	WaterMark.exe	70
PID 1432 wrote to memory of 4064	1432	iexplore.exe	71
PID 1432 wrote to memory of 4064	1432	iexplore.exe	71
PID 1432 wrote to memory of 4064	1432	iexplore.exe	71

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\024dab1bc2d423977e5606a3c54b148e.dll,#1
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3104
- C:\Windows\SysWOW64\rundll32mgr.exe
  C:\Windows\SysWOW64\rundll32mgr.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:208

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\024dab1bc2d423977e5606a3c54b148e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4524 -ip 4524
1⤵
PID:3744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4524 -s 204
1⤵
- Program crash
PID:2076

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
1⤵
PID:4524

C:\Program Files (x86)\Microsoft\WaterMark.exe
"C:\Program Files (x86)\Microsoft\WaterMark.exe"
1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe"
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1432
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1432 CREDAT:17410 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:4064
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe"
  2⤵
  - Modifies Internet Explorer settings
  PID:3712

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:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\VersionManager\verD169.tmp

Filesize
15KB

MD5
1a545d0052b581fbb2ab4c52133846bc

SHA1
62f3266a9b9925cd6d98658b92adec673cbe3dd3

SHA256
557472aeaebf4c1c800b9df14c190f66d62cbabb011300dbedde2dcddd27a6c1

SHA512
bd326d111589d87cd6d019378ec725ac9ac7ad4c36f22453941f7d52f90b747ede4783a83dfff6cae1b3bb46690ad49cffa77f2afda019b22863ac485b406e8d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\UG0DPB4T\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

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

Filesize
92KB

MD5
82916836a9c975fff7305b92a9bcabb8

SHA1
6b00e4df620e7289fdca95ebb964fe9b572f0204

SHA256
7b3a84b61c1347dd312b49369a2784f71598b8912caec163738d1c5f67e906b0

SHA512
00487773d60bd883ac46772e26b4f3061f730c1b03232a41d6b6eec05c9318a611e1ee18b106e35b0efb422e900bbef7085a6e0b2104138983f7ed22d5836acb

Download Submit
memory/208-11-0x00000000005A0000-0x00000000005C6000-memory.dmp

Filesize
152KB

Download
memory/208-5-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/208-6-0x00000000005A0000-0x00000000005C6000-memory.dmp

Filesize
152KB

Download
memory/208-9-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3104-0-0x0000000010000000-0x0000000010036000-memory.dmp

Filesize
216KB

Download
memory/3956-15-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3956-14-0x00000000005F0000-0x00000000005F1000-memory.dmp

Filesize
4KB

Download
memory/3956-17-0x00000000772A2000-0x00000000772A3000-memory.dmp

Filesize
4KB

Download
memory/3956-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3956-22-0x0000000002180000-0x0000000002181000-memory.dmp

Filesize
4KB

Download
memory/3956-21-0x00000000772A2000-0x00000000772A3000-memory.dmp

Filesize
4KB

Download
memory/3956-23-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3956-24-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/3956-16-0x00000000005B0000-0x00000000005D6000-memory.dmp

Filesize
152KB

Download
memory/4524-19-0x0000000000930000-0x0000000000931000-memory.dmp

Filesize
4KB

Download
memory/4524-20-0x0000000000910000-0x0000000000911000-memory.dmp

Filesize
4KB

Download