metasploit | dad1a4bc2ec24bf8b689974ae5a7128d85482d970162a70ea40ea0e80fbfa8ee

Analysis

max time kernel
140s
max time network
140s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
23-12-2024 16:11

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General

Target

krpt.dll
Size

1.3MB
MD5

8acdc3de7aee7d7d7242d42e7e5254be
SHA1

d0be878a474170584ba3cfdfd19b22baa81f19df
SHA256

53acfefcda2e6e3f31786a2e2c7fa5bcb83380e284d919f03bfc6d31a6b3b76f
SHA512

13f541bda8961d649ec3ec1351413281fe2e340f17bce09a3c7b09a411f0b27fa7d0e5693399032ca725ef598c84096bfcc5d0f5775121fab7b89f323c0c1db0
SSDEEP

24576:FrqYkIXkv6WMVqgF7687IMFAO1KlyOQpppppppppppppppppppppp4KVmsdzaA+5:F+YB86Wr/2ImAJy

Score

10^/10

metasploit backdoor discovery trojan

Malware Config

Extracted

Family

metasploit

Version

encoder/shikata_ga_nai

Signatures

MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
trojan backdoor metasploit
Metasploit family
metasploit

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2856	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.EXE

Office loads VBA resources, possible macro or embedded object present

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2144	WINWORD.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2144	WINWORD.EXE
2144	WINWORD.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 2856	2644	rundll32.exe	30
PID 2644 wrote to memory of 2856	2644	rundll32.exe	30
PID 2644 wrote to memory of 2856	2644	rundll32.exe	30
PID 2644 wrote to memory of 2856	2644	rundll32.exe	30
PID 2644 wrote to memory of 2856	2644	rundll32.exe	30
PID 2644 wrote to memory of 2856	2644	rundll32.exe	30
PID 2644 wrote to memory of 2856	2644	rundll32.exe	30
PID 2856 wrote to memory of 2144	2856	rundll32.exe	31
PID 2856 wrote to memory of 2144	2856	rundll32.exe	31
PID 2856 wrote to memory of 2144	2856	rundll32.exe	31
PID 2856 wrote to memory of 2144	2856	rundll32.exe	31
PID 2144 wrote to memory of 2748	2144	WINWORD.EXE	32
PID 2144 wrote to memory of 2748	2144	WINWORD.EXE	32
PID 2144 wrote to memory of 2748	2144	WINWORD.EXE	32
PID 2144 wrote to memory of 2748	2144	WINWORD.EXE	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\krpt.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\krpt.dll,#1
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\冠状病毒实时更新：中国正在追踪来自湖北的旅行者.doc"
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2144
  - - C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      4⤵
      PID:2748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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\冠状病毒实时更新：中国正在追踪来自湖北的旅行者.doc

Filesize
713KB

MD5
c5b98b77810c5619d20b71791b820529

SHA1
0c9bcc7e92c9557d4f2072e40af0e5e029d92c15

SHA256
fb82f32b9ce1d63cc86ab6ee93b9e619056222af181578d2f8ed38ee6474c092

SHA512
e6f16c71d3aefff8789c28b1a8abbcb47680dbdced912f50d318a9037c6f56bfe0a48e5cbf879ef24cecff03a5af937f8ec4b25c8230229730f71c38453da2b4

Download Submit
memory/2144-2-0x000000002FBC1000-0x000000002FBC2000-memory.dmp

Filesize
4KB

Download
memory/2144-3-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2144-4-0x000000007182D000-0x0000000071838000-memory.dmp

Filesize
44KB

Download
memory/2144-8-0x000000007182D000-0x0000000071838000-memory.dmp

Filesize
44KB

Download
memory/2856-1-0x0000000002220000-0x00000000022B0000-memory.dmp

Filesize
576KB

Download