ramnit | 3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6a

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2024, 19:17

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General

Target

3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
Size

419KB
MD5

171e15f3d37b54a44d4fde0e253a9fc0
SHA1

03b02123a8d6816ed3ec55bb8f4aa4553918814d
SHA256

3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6a
SHA512

9c2fa167f6817cbd53836a383e3f34a7f6a810f48437eb9ac70470278eaf2818960bf2d94f3356ce3ee59f171fcc738de350bb2694cd52118b96989eeae3ea8f
SSDEEP

3072:9oekxYHVyS9nXPZGULMgo9ae3LV1dKdLhtKeoVWh7VnSNFKsa0h6:jkCE0nXP4AvhM1sdLhtloVWNV6a0h6

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

Executes dropped EXE 1 IoCs

pid	Process
1512	regsvr32mgr.exe

Loads dropped DLL 1 IoCs

pid	Process
1512	regsvr32mgr.exe

Drops file in System32 directory 1 IoCs

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

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1512-7-0x0000000000400000-0x000000000045C000-memory.dmp	upx
behavioral2/memory/1512-11-0x0000000000400000-0x000000000045C000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3868	1512	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 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	regsvr32mgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 2396	4964	regsvr32.exe	82
PID 4964 wrote to memory of 2396	4964	regsvr32.exe	82
PID 4964 wrote to memory of 2396	4964	regsvr32.exe	82
PID 2396 wrote to memory of 1512	2396	regsvr32.exe	83
PID 2396 wrote to memory of 1512	2396	regsvr32.exe	83
PID 2396 wrote to memory of 1512	2396	regsvr32.exe	83

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll
  2⤵
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2396
- - C:\Windows\SysWOW64\regsvr32mgr.exe
    C:\Windows\SysWOW64\regsvr32mgr.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1512
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 540
      4⤵
      Program crash
      PID:3868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1512 -ip 1512
1⤵
PID:4576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~TM9A4C.tmp

Filesize
1.6MB

MD5
4f3387277ccbd6d1f21ac5c07fe4ca68

SHA1
e16506f662dc92023bf82def1d621497c8ab5890

SHA256
767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

SHA512
9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

Download Submit
C:\Windows\SysWOW64\regsvr32mgr.exe

Filesize
354KB

MD5
a8245f71e4e4aff10e574300abd2bcc2

SHA1
7ea3ae53a0697e526c6bc877b103b390af042d7a

SHA256
7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546

SHA512
8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978

Download Submit
memory/1512-4-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1512-6-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1512-7-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1512-11-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/2396-0-0x0000000074A90000-0x0000000074AFD000-memory.dmp

Filesize
436KB

Download