Malware Analysis Report

2025-08-10 14:19

Sample ID 241003-xzhpaawanh
Target 3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN
SHA256 3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6a
Tags
ramnit banker discovery spyware stealer trojan upx worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6a

Threat Level: Known bad

The file 3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN was found to be: Known bad.

Malicious Activity Summary

ramnit banker discovery spyware stealer trojan upx worm

Ramnit

Executes dropped EXE

Loads dropped DLL

Drops file in System32 directory

UPX packed file

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-03 19:17

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-03 19:17

Reported

2024-10-03 19:19

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\regsvr32mgr.exe C:\Windows\SysWOW64\regsvr32.exe N/A

UPX packed file

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\regsvr32mgr.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll" C:\Windows\SysWOW64\regsvr32.exe N/A

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2716 -s 180

Network

N/A

Files

memory/2396-1-0x0000000074500000-0x000000007456D000-memory.dmp

\Windows\SysWOW64\regsvr32mgr.exe

MD5 a8245f71e4e4aff10e574300abd2bcc2
SHA1 7ea3ae53a0697e526c6bc877b103b390af042d7a
SHA256 7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546
SHA512 8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978

memory/2396-9-0x0000000000280000-0x00000000002DC000-memory.dmp

memory/2396-8-0x0000000000280000-0x00000000002DC000-memory.dmp

memory/2716-11-0x0000000000400000-0x000000000045C000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TME4B4.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

\Users\Admin\AppData\Local\Temp\~TME4F3.tmp

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

memory/2716-18-0x0000000000400000-0x000000000045C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-03 19:17

Reported

2024-10-03 19:19

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

95s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32mgr.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\regsvr32mgr.exe C:\Windows\SysWOW64\regsvr32.exe N/A

UPX packed file

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\regsvr32mgr.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32mgr.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\ = "7-Zip Shell Extension" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{23170F69-40C1-278A-1000-000100020000}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4964 wrote to memory of 2396 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4964 wrote to memory of 2396 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4964 wrote to memory of 2396 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2396 wrote to memory of 1512 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\regsvr32mgr.exe
PID 2396 wrote to memory of 1512 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\regsvr32mgr.exe
PID 2396 wrote to memory of 1512 N/A C:\Windows\SysWOW64\regsvr32.exe C:\Windows\SysWOW64\regsvr32mgr.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\3a901c32c0b415bb9f582f42a1a2e59216864dd1cc0e1e9dda8f8d959e0c7f6aN.dll

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\regsvr32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1512 -ip 1512

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 540

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 210.108.222.173.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 108.11.19.2.in-addr.arpa udp
US 8.8.8.8:53 243.108.222.173.in-addr.arpa udp
US 8.8.8.8:53 147.108.222.173.in-addr.arpa udp

Files

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

C:\Windows\SysWOW64\regsvr32mgr.exe

MD5 a8245f71e4e4aff10e574300abd2bcc2
SHA1 7ea3ae53a0697e526c6bc877b103b390af042d7a
SHA256 7bf945e4d87567106bfe8980b4fe1e6482578ab91fa9d82426c804ae5c3f2546
SHA512 8c32f1f55c0475ce06ddbd3db80d529addb401089bd61491641d2e2c0c36020eabc5a947735388ae7a90514c543cb29450afa13b1e3f90387e432b62d4628978

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

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

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

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

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

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