MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 85f9c52380c96ddf3aa66361640a6a6232a182d5d4437de8a3585fa0d216ebc4. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
Formbook
Vendor detections: 8
| SHA256 hash: | 85f9c52380c96ddf3aa66361640a6a6232a182d5d4437de8a3585fa0d216ebc4 |
|---|---|
| SHA3-384 hash: | 912ea1ddb8e2f1162b4291a03851ca6fa3782055106ec8baefb9c031169befd88c686bf71fc3175cb33c40dc67671339 |
| SHA1 hash: | 66a3b3f320258548901eca3fbe6ced6fe812e6cf |
| MD5 hash: | b0ea8f9461210c4c2ce6875246c9bf49 |
| humanhash: | idaho-wisconsin-single-violet |
| File name: | 매입 마감 내역서 양식(공식),xlsx.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 465'408 bytes |
| First seen: | 2020-08-14 09:38:21 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger) |
| ssdeep | 12288:Jx/aRxLfpXm2Ru4Lg7pJeA4V24SYMzUF:qRxjpW2kd7moHzUF |
| Threatray | 2'240 similar samples on MalwareBazaar |
| TLSH | 8AA4AE3522988F62F13EABBC5261111403F3A926D737EE4DFEB602E90D25BD18673716 |
| Reporter |  abuse_ch |
| Tags: | exe FormBook geo KOR |
abuse_ch
Malspam distributing unidentified malware:HELO: cvsmtppost023.nm.naver.com
Sending IP: 125.209.224.212
From: 최정환<yj78655@naver.com>
Subject: 와이어컷팅 도면
Attachment: 매입 마감 내역서 양식(공식).z (contains "매입 마감 내역서 양식(공식),xlsx.exe")
Intelligence
File Origin
# of uploads :
1
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Forced shutdown of a system process
Unauthorized injection to a system process
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Benign windows process drops PE files
Detected FormBook malware
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses netstat to query active network connections and open ports
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-08-14 09:40:07 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 2'230 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
3/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Program crash
Program crash
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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