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repfix.exe

PuTTY suite

Simon Tatham

The executable repfix.exe, “Command-line interactive SFTP client” has been detected as malware by 10 anti-virus scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source.
Publisher:
Simon Tatham

Product:
PuTTY suite

Description:
Command-line interactive SFTP client

Version:
0.63.3.0

MD5:
b436bd862e8586228174a6b9f17f03e6

SHA-1:
85c3f0673d1521129078de225994ec60d692afdb

SHA-256:
137c8c2d0345fb423abd07f7de8b75208c8f2ff85d02aec784ba2848ff3fbef5

Scanner detections:
10 / 68

Status:
Malware

Analysis date:
4/24/2026 7:07:58 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Inject2
2015.0.3261

Baidu Antivirus
Trojan.Win32.Injector
4.0.3.141213

ESET NOD32
Win32/Injector.BRCL trojan
7.0.302.0

F-Secure
Suspicious:W32/Malware.85c3f0673d!Online
5.13.68

IKARUS anti.virus
Trojan.Win32.Injector
t3scan.1.8.5.0

Kaspersky
UDS:DangerousObject.Multi.Generic
14.0.0.2802

Malwarebytes
Trojan.Crypt
v2014.12.13.01

McAfee
Artemis!9029AAA7731D
5600.6917

Qihoo 360 Security
HEUR/QVM42.0.Malware.Gen
1.0.0.1015

VIPRE Antivirus
Threat.4150696
35418

File size:
216.2 KB (221,387 bytes)

Product version:
0.63.3.0

Copyright:
Copyright © 1997-2013 Simon Tatham.

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\repfix.exe

File PE Metadata
Compilation timestamp:
5/12/2014 3:03:30 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:1wHys1asixlCTMdP9bGFFl9JDt2T3GgI8vIzJBxwz:e1aDPTvWHtSdIcIvCz

Entry address:
0x30B6

Entry point:
81, EC, 84, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 90, 91, 40, 00, 89, 5C, 24, 20, C6, 44, 24, 14, 20, FF, 15, 34, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, 1C, 71, 40, 00, 53, FF, 15, 8C, 72, 40, 00, 6A, 08, A3, 78, 37, 42, 00, E8, 95, 2D, 00, 00, A3, C4, 36, 42, 00, 53, 8D, 44, 24, 38, 68, 60, 01, 00, 00, 50, 53, 68, 80, EC, 41, 00, FF, 15, 64, 71, 40, 00, 68, 80, 91, 40, 00, 68, C0, 2E, 42, 00, E8, 3F, 2A, 00, 00, FF, 15, 20, 71, 40, 00, BD, 00, 90, 42, 00, 50, 55, E8, 2D, 2A...
 
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Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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