MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d3e4660aa4786dc407247255a54d403de68626337bbb814b14253838d5c075c. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments 1
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SHA256 hash: 4d3e4660aa4786dc407247255a54d403de68626337bbb814b14253838d5c075c
SHA3-384 hash: 820e2c6f5010948b31ed0905c055869862ef3cd45bd6f02c9f538d0d0b8a44b18327d1a354fdd2443b8799b146292bb8
SHA1 hash: 6e0660f9fe6fd89db873e582265f5292fe74a605
MD5 hash: 3987bdd010aad702ce9bd7898d94c665
humanhash: twelve-michigan-nebraska-oven
File name:3987bdd010aad702ce9bd7898d94c665
Download: download sample
Signature Formbook
Create hunting rule
File size:681'472 bytes
First seen:2022-06-28 11:11:59 UTC
Last seen:2022-06-28 12:45:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'473 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:kqUaxNS0chiThkahoCodG3w8PTikGwp3BX4vae:/UaPS0qahZodGtVbova
TLSH T1FEE4D0163BD88F46E17DF7B5A1780010577AB916392BE3698CC074EA0DB73908A4BF5B
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
217
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/283907/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook packed
Link:
https://www.filescan.io/uploads/62bae24422ef321587b6f2df/reports/2d60717a-a055-47d8-b1b0-57a4df0bfd06/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d8152199-c5d7-4693-a9fe-22001dd95de8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1021198
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 653689 Sample: 51emkUuUCm Startdate: 28/06/2022 Architecture: WINDOWS Score: 100 41 www.saimsclub.com 2->41 43 www.poolpure.store 2->43 45 8 other IPs or domains 2->45 47 Snort IDS alert for network traffic 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Antivirus detection for URL or domain 2->51 53 9 other signatures 2->53 11 51emkUuUCm.exe 3 2->11         started        signatures3 process4 file5 39 C:\Users\user\AppData\...\51emkUuUCm.exe.log, ASCII 11->39 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 15 51emkUuUCm.exe 11->15         started        18 51emkUuUCm.exe 11->18         started        20 51emkUuUCm.exe 11->20         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 22 explorer.exe 15->22 injected process9 process10 24 rundll32.exe 22->24         started        27 autoconv.exe 22->27         started        29 autochk.exe 22->29         started        signatures11 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 31 cmd.exe 1 24->31         started        33 explorer.exe 3 148 24->33         started        35 explorer.exe 24->35         started        process12 process13 37 conhost.exe 31->37         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4d3e4660aa4786dc407247255a54d403de68626337bbb814b14253838d5c075c/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-28 10:58:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
17 of 26 (65.38%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ju7emyfki6dnyqdsi4svuvguappgqytdg653qffrijjyhdk4a5oa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:0njt loader rat
Link:
https://tria.ge/reports/220628-natwkshaaj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
87fd856794e10ad7c88046c25f7c2304462e86d81096f85d6725c6362a53b5b9
MD5 hash:
24cf979aaf7f1c1d819bc5c130dc7235
SHA1 hash:
ac7cc044fe22a179252db98bb753107d4ae2e83f
Link:
https://www.unpac.me/results/c2b9e886-f826-4f5e-905d-3659fd8b4195/
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/c2b9e886-f826-4f5e-905d-3659fd8b4195/
SH256 hash:
2b4b9db28c7e38da85faf9db94af85c4898ba2626bbf171aea49ba8345b6cd64
MD5 hash:
7d5e359d85331924594a08db25391475
SHA1 hash:
d908dcc1b995f9dffd1facbe0480c9bc509dac62
Link:
https://www.unpac.me/results/c2b9e886-f826-4f5e-905d-3659fd8b4195/
SH256 hash:
0aa8ea56f670ef5041fe87ee1a27b6623c2cf7996ed489214aa076996ca40cac
MD5 hash:
faf84cab64260654988db2f9157f8f89
SHA1 hash:
e1e6ebeaf252c78e74c1355cdefc6a2c52cfab70
Link:
https://www.unpac.me/results/c2b9e886-f826-4f5e-905d-3659fd8b4195/
SH256 hash:
1daf51b4401e6dcc75d9f747945a590c46cf338e200ba542292e135bde546b9e
MD5 hash:
cb225c28f1517b1eb7bd601fb1c6514e
SHA1 hash:
b05e0bd48fb2c4d5b427bc2895bdf8e6ae8879fc
Detections:
XLoader
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c2b9e886-f826-4f5e-905d-3659fd8b4195/
Parent samples :
37ba3f12ba63a18cc331c31a31665813b40ed2825b76b355f56d396da2407648
4d3e4660aa4786dc407247255a54d403de68626337bbb814b14253838d5c075c
SH256 hash:
4d3e4660aa4786dc407247255a54d403de68626337bbb814b14253838d5c075c
MD5 hash:
3987bdd010aad702ce9bd7898d94c665
SHA1 hash:
6e0660f9fe6fd89db873e582265f5292fe74a605
Link:
https://www.unpac.me/results/c2b9e886-f826-4f5e-905d-3659fd8b4195/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4d3e4660aa47/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/4d3e4660aa4786dc407247255a54d403de68626337bbb814b14253838d5c075c

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Formbook

Executable exe 4d3e4660aa4786dc407247255a54d403de68626337bbb814b14253838d5c075c

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2252023/
Cape
Cape
https://www.capesandbox.com/analysis/283907/

Comments


Avatar
zbet commented on 2022-06-28 11:12:05 UTC

url : hxxp://147.124.217.173/winspace/.csrss.exe