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regsvr.exe

The executable regsvr.exe has been detected as malware by 1 anti-virus scanner. It is set to automatically start when a user logs into Windows via the current user run registry key under the display name ‘Msn Messsenger’. While running, it connects to the Internet address apache2-yak.zarniwoop.dreamhost.com on port 80 using the HTTP protocol.
MD5:
66fa4060b8c13f1819259a4c41dbe956

SHA-1:
301947be5bed83824a63206e1da536d977d7c435

SHA-256:
fe4ea62e4f1c2cc7aaf7eebc0e903fab7effc4aef8a63f36e80cf8097ddf0c97

Scanner detections:
1 / 68

Status:
Malware

Analysis date:
12/27/2024 5:42:39 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Threat.Tojan.Click (H)
17.1.11.17

File size:
870.5 KB (891,384 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\roaming\regsvr.exe

File PE Metadata
Compilation timestamp:
5/1/2008 1:49:00 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
8.0

Entry address:
0xFC7FC

Entry point:
60, E8, E6, 19, 00, 00, 8B, 74, 24, 20, E8, 08, 00, 00, 00, 61, 68, FB, C1, 4F, 00, C3, E9, 59, E8, 01, 16, 00, 00, 81, E6, 00, F0, FF, FF, 81, EE, 00, 10, 00, 00, 66, 81, 3E, 4D, 5A, 75, F3, 0F, B7, 7E, 3C, 03, FE, 8B, 6F, 78, 03, EE, 8B, 5D, 20, 03, DE, 33, C0, 8B, D6, 83, C3, 04, 40, 8B, 3B, 03, FA, E8, 0F, 00, 00, 00, 47, 65, 74, 50, 72, 6F, 63, 41, 64, 64, 72, 65, 73, 73, 00, 5E, 33, C9, B1, 0F, FC, F3, A6, 75, DA, 8B, F2, 8B, 5D, 24, 03, DE, 0F, B7, 0C, 43, 8B, 5D, 1C, 03, DE, 8B, 1C, 8B, 03, DE, 81...
 
[+]

Entropy:
7.5759

Packer / compiler:
ASPack v1.08.04

Code size:
404.5 KB (414,208 bytes)

Startup File (User Run)
Registry location:
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Name:
Msn Messsenger

Command:
C:\users\{user}\appdata\roaming\regsvr.exe


The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to apache2-yak.zarniwoop.dreamhost.com  (173.236.154.78:80)

TCP (HTTP):
Connects to tiki.trunkoz.com  (103.14.97.123:80)

TCP (HTTP):
Connects to win04-host-kb.turkticaret.net  (31.186.8.104:80)

TCP (HTTP):
Connects to server250.net217.intbildns.org  (185.126.217.250:80)

TCP (HTTP):
Connects to neptune.corpservers.net  (63.247.87.162:80)

TCP (HTTP):
Connects to 209-99-40-222.fwd.datafoundry.com  (209.99.40.222:80)

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