Malware Analysis Report

2025-08-10 23:56

Sample ID 240314-j1szragg67
Target c8205c7edb79709dcb77038e4af160f2
SHA256 515b3103786959194f8dfdcb9abf2c93b84d0977f04b61a084eb73f12d64657c
Tags
ramnit banker spyware stealer trojan worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

515b3103786959194f8dfdcb9abf2c93b84d0977f04b61a084eb73f12d64657c

Threat Level: Known bad

The file c8205c7edb79709dcb77038e4af160f2 was found to be: Known bad.

Malicious Activity Summary

ramnit banker spyware stealer trojan worm

Ramnit

Executes dropped EXE

Loads dropped DLL

Drops file in System32 directory

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-14 08:08

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-14 08:08

Reported

2024-03-14 08:11

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

155s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c8205c7edb79709dcb77038e4af160f2.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4868 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4868 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4868 wrote to memory of 1112 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c8205c7edb79709dcb77038e4af160f2.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c8205c7edb79709dcb77038e4af160f2.dll,#1

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 146.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 185.13.222.173.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 32.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 33.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 40.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 11.173.189.20.in-addr.arpa udp

Files

memory/1112-0-0x00000000757F0000-0x0000000075872000-memory.dmp

memory/1112-1-0x00000000757F0000-0x0000000075872000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-14 08:08

Reported

2024-03-14 08:11

Platform

win7-20240221-en

Max time kernel

118s

Max time network

130s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c8205c7edb79709dcb77038e4af160f2.dll,#1

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2092 wrote to memory of 2588 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2588 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2588 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2588 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2588 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2588 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2092 wrote to memory of 2588 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2588 wrote to memory of 2960 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2588 wrote to memory of 2960 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2588 wrote to memory of 2960 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2588 wrote to memory of 2960 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2588 wrote to memory of 1444 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2588 wrote to memory of 1444 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2588 wrote to memory of 1444 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2588 wrote to memory of 1444 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c8205c7edb79709dcb77038e4af160f2.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\c8205c7edb79709dcb77038e4af160f2.dll,#1

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2588 -s 240

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2960 -s 164

Network

N/A

Files

memory/2588-0-0x00000000751B0000-0x0000000075232000-memory.dmp

memory/2588-1-0x0000000075120000-0x00000000751A2000-memory.dmp

memory/2588-2-0x0000000075120000-0x00000000751A2000-memory.dmp

\Windows\SysWOW64\rundll32mgr.exe

MD5 9d98badfb96f1384ecd059e89fb2d1fe
SHA1 239094afbb8ccaddef0493ceea50469a87cd254c
SHA256 7837455eaec625be70922a22405cecfe9f0def2204fa4746337999b61403aace
SHA512 7d04faeea61bdbd39f5bf67a31f6ca1276031e98c4eac099a4d65281cac205a6e309c7006c8f364ae97e378628dda55a1389c87f9222ddbafba4292320f76b52

memory/2588-5-0x00000000006F0000-0x00000000007F9000-memory.dmp

memory/2960-9-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2960-11-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2960-13-0x00000000001D0000-0x00000000001D2000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM6104.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/2960-16-0x0000000077ABF000-0x0000000077AC1000-memory.dmp

memory/2960-18-0x0000000077AC0000-0x0000000077AC1000-memory.dmp

memory/2960-19-0x0000000077AC0000-0x0000000077AC2000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM61A1.tmp

MD5 9b98d47916ead4f69ef51b56b0c2323c
SHA1 290a80b4ded0efc0fd00816f373fcea81a521330
SHA256 96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b
SHA512 68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

memory/2960-22-0x0000000000400000-0x0000000000509000-memory.dmp

memory/2960-24-0x0000000076BA0000-0x0000000076CB0000-memory.dmp

memory/2960-23-0x0000000076BA0000-0x0000000076CB0000-memory.dmp

memory/2960-25-0x0000000076BA0000-0x0000000076CB0000-memory.dmp