ramnit | e16ac3f14e8b78ef1f56643f0ecaa9310659d498e1a2712575763bf09c0c3376

Analysis

max time kernel
119s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/02/2024, 20:43

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General

Target

aa1cbbafc41735fe8e794a6e5d8e5410.dll
Size

264KB
MD5

aa1cbbafc41735fe8e794a6e5d8e5410
SHA1

439c128008abf32242c4290bba1232f20127d1f4
SHA256

e16ac3f14e8b78ef1f56643f0ecaa9310659d498e1a2712575763bf09c0c3376
SHA512

b35b7bd7433ac3d9d8299c5462f20f11bfc4e0303e17d189c089015cff9d57a38711703911662037452cf8d2a73db86b7b18aae3e5d265d84463c32a07d576e9
SSDEEP

6144:MQL46sq9C9X3xVHG8EnSEpawFWAf23j9Wpxhq:F5s1xVHG8ESkDcAfcjKxM

Score

10^/10

ramnit adware 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
2340	regsvr32mgr.exe

Loads dropped DLL 4 IoCs

pid	Process
1224	regsvr32.exe
1224	regsvr32.exe
2340	regsvr32mgr.exe
2340	regsvr32mgr.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2340-11-0x0000000000400000-0x000000000046A000-memory.dmp	upx

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\NoExplorer = "1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}	regsvr32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\regsvr32mgr.exe	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{64844F4D-492F-429E-881C-D7F106259738}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIEStat\ = "FDMIEStat Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D4D6EAB8-009E-4EED-814E-4891D7E1741B}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{351A47E5-B59E-4CF2-B81A-B651D75FE944}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D4D6EAB8-009E-4EED-814E-4891D7E1741B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\aa1cbbafc41735fe8e794a6e5d8e5410.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{64844F4D-492F-429E-881C-D7F106259738}\ = "IFDMIEStat"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{64844F4D-492F-429E-881C-D7F106259738}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\TypeLib\ = "{351A47E5-B59E-4CF2-B81A-B651D75FE944}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{64844F4D-492F-429E-881C-D7F106259738}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{64844F4D-492F-429E-881C-D7F106259738}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIEStat	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{64844F4D-492F-429E-881C-D7F106259738}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO.1\ = "FDMIECookiesBHO Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\VersionIndependentProgID\ = "Iecooks.FDMIECookiesBHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D4D6EAB8-009E-4EED-814E-4891D7E1741B}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{351A47E5-B59E-4CF2-B81A-B651D75FE944}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\aa1cbbafc41735fe8e794a6e5d8e5410.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\ = "FDMIECookiesBHO Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D4D6EAB8-009E-4EED-814E-4891D7E1741B}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{351A47E5-B59E-4CF2-B81A-B651D75FE944}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{351A47E5-B59E-4CF2-B81A-B651D75FE944}\1.0\ = "iecooks 1.0 Type Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\ = "IFDMIECookiesBHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO.1\CLSID\ = "{CC59E0F9-7E43-44FA-9FAA-8377850BF205}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO\ = "FDMIECookiesBHO Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIEStat\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIEStat\CLSID\ = "{D4D6EAB8-009E-4EED-814E-4891D7E1741B}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D4D6EAB8-009E-4EED-814E-4891D7E1741B}\ProgID\ = "Iecooks.FDMIEStat.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\TypeLib\ = "{351A47E5-B59E-4CF2-B81A-B651D75FE944}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIEStat\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{351A47E5-B59E-4CF2-B81A-B651D75FE944}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{64844F4D-492F-429E-881C-D7F106259738}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{64844F4D-492F-429E-881C-D7F106259738}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO\CurVer\ = "Iecooks.FDMIECookiesBHO.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{64844F4D-492F-429E-881C-D7F106259738}\TypeLib\ = "{351A47E5-B59E-4CF2-B81A-B651D75FE944}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{64844F4D-492F-429E-881C-D7F106259738}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIEStat.1\ = "FDMIEStat Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{64844F4D-492F-429E-881C-D7F106259738}\TypeLib\ = "{351A47E5-B59E-4CF2-B81A-B651D75FE944}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D4D6EAB8-009E-4EED-814E-4891D7E1741B}\VersionIndependentProgID\ = "Iecooks.FDMIEStat"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{351A47E5-B59E-4CF2-B81A-B651D75FE944}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{40D3F599-74F0-44D3-B059-76C0F12C0D6E}\ = "IFDMIECookiesBHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\TypeLib\ = "{351A47E5-B59E-4CF2-B81A-B651D75FE944}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{351A47E5-B59E-4CF2-B81A-B651D75FE944}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIECookiesBHO\CLSID\ = "{CC59E0F9-7E43-44FA-9FAA-8377850BF205}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC59E0F9-7E43-44FA-9FAA-8377850BF205}\ProgID\ = "Iecooks.FDMIECookiesBHO.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Iecooks.FDMIEStat.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{64844F4D-492F-429E-881C-D7F106259738}	regsvr32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1756 wrote to memory of 1224	1756	regsvr32.exe	28
PID 1756 wrote to memory of 1224	1756	regsvr32.exe	28
PID 1756 wrote to memory of 1224	1756	regsvr32.exe	28
PID 1756 wrote to memory of 1224	1756	regsvr32.exe	28
PID 1756 wrote to memory of 1224	1756	regsvr32.exe	28
PID 1756 wrote to memory of 1224	1756	regsvr32.exe	28
PID 1756 wrote to memory of 1224	1756	regsvr32.exe	28
PID 1224 wrote to memory of 2340	1224	regsvr32.exe	29
PID 1224 wrote to memory of 2340	1224	regsvr32.exe	29
PID 1224 wrote to memory of 2340	1224	regsvr32.exe	29
PID 1224 wrote to memory of 2340	1224	regsvr32.exe	29

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\aa1cbbafc41735fe8e794a6e5d8e5410.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\aa1cbbafc41735fe8e794a6e5d8e5410.dll
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\SysWOW64\regsvr32mgr.exe
    C:\Windows\SysWOW64\regsvr32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:2340
  - - C:\Users\Admin\AppData\Local\Temp\guwumtan.exe
      C:\Users\Admin\AppData\Local\Temp\guwumtan.exe
      4⤵
      PID:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

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

\Users\Admin\AppData\Local\Temp\~TM47F8.tmp

Filesize
559KB

MD5
2aa6d22320983a99311f5d61c9f52584

SHA1
b3644928ebc723f9a39b40baae37951c9949b82f

SHA256
00505ca38dad85816333c45bda87a99ba84f19ca72804e700aa40d4a6a2fe631

SHA512
880610658737df3063590cfea5b4f06ba8cb027e35500fd5187973fe8f618d69724aa36eace0e9408af58542ad6f5b9850c3586735faca1ad554c339367c7c0e

Download Submit
\Users\Admin\AppData\Local\Temp\~TM4876.tmp

Filesize
1.1MB

MD5
9b98d47916ead4f69ef51b56b0c2323c

SHA1
290a80b4ded0efc0fd00816f373fcea81a521330

SHA256
96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b

SHA512
68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

Download Submit
\Windows\SysWOW64\regsvr32mgr.exe

Filesize
162KB

MD5
6c1e199ccc02acaf6e962eb75acb8c98

SHA1
742db8306bdbc1759d73eabd7914a93f94478cc7

SHA256
8408dc27c9c9a7b6ffa3fc2484284be71709d714f33a0b2e0ee51da03f7c7e0f

SHA512
6c8151370cc7264cab59d2c5cc03c2bc384a4cd44d2a58d431d3fca7ef2318b2aced1fa7fb21d6e4ca7fb25392912e5ef8592cfff9755ecc59b9af9fd1e14b3c

Download Submit
memory/1224-1-0x0000000010000000-0x0000000010043000-memory.dmp

Filesize
268KB

Download
memory/2340-9-0x00000000002A0000-0x000000000030A000-memory.dmp

Filesize
424KB

Download
memory/2340-11-0x0000000000400000-0x000000000046A000-memory.dmp

Filesize
424KB

Download
memory/2340-16-0x0000000077240000-0x0000000077241000-memory.dmp

Filesize
4KB

Download
memory/2340-17-0x0000000077240000-0x0000000077242000-memory.dmp

Filesize
8KB

Download
memory/2340-14-0x000000007723F000-0x0000000077241000-memory.dmp

Filesize
8KB

Download
memory/2340-21-0x0000000076B00000-0x0000000076C10000-memory.dmp

Filesize
1.1MB

Download
memory/2340-23-0x0000000076B00000-0x0000000076C10000-memory.dmp

Filesize
1.1MB

Download
memory/2340-24-0x0000000076B00000-0x0000000076C10000-memory.dmp

Filesize
1.1MB

Download