MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5f31d9d3c1a204926f1a87c5873b01ba37153af5e55594ac5037091d56026ac. 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
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SHA256 hash: c5f31d9d3c1a204926f1a87c5873b01ba37153af5e55594ac5037091d56026ac
SHA3-384 hash: f9b2b691b45aa133a7dbfb84a4222153ebfeb2f628b1a64718c3179ea7cfa433c0a93ae71d86ff7c0ab0b7daea5be612
SHA1 hash: e0e895f275ea67473d0ef8bcc42d9bf7558ba528
MD5 hash: b6b09e5fccbf7a14fd8aea53fe74a965
humanhash: wolfram-march-early-blue
File name:obizx.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'212'928 bytes
First seen:2022-08-24 21:39:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:mOr7S14+hXBxlx0MEmywwVAs6Hu3XDG2Gf8DUBf2P/Ug5IyTll2V8OwFG+SfQZUU:mOr7n+10q0G2GfXBqllw8BG+SYXMwy
TLSH T1A4456BD83910719EC87FCE7689571E10AB6264A64F0FE317F07311ED9A0E69ACF911E2
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon f0c4f4f4e4e4c4f0 (7 x AgentTesla, 6 x Loki, 4 x Formbook)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
394
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
obizx.exe
Verdict:
Malicious activity
Analysis date:
2022-08-24 21:42:19 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/6bb7255c-36ed-4934-a2ba-4c9ccdc9a212

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/300979/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1506.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Launching a process
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook packed wacatac
Link:
https://www.filescan.io/uploads/63069ab53cbb13868a7c04b6/reports/caccc02a-8122-4c73-9e79-4b34b0a7f3ab/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/edea8db9-6a6c-4e57-b546-34f365d2c9e1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1057337
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Deletes itself after installation
Injects a PE file into a foreign processes
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 689853 Sample: obizx.exe Startdate: 24/08/2022 Architecture: WINDOWS Score: 100 31 www.saudalasfoor.com 2->31 33 saudalasfoor.com 2->33 37 Multi AV Scanner detection for domain / URL 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 6 other signatures 2->43 9 obizx.exe 3 2->9         started        signatures3 process4 file5 23 C:\Users\user\AppData\Local\...\obizx.exe.log, ASCII 9->23 dropped 53 Injects a PE file into a foreign processes 9->53 13 obizx.exe 9->13         started        signatures6 process7 signatures8 55 Modifies the context of a thread in another process (thread injection) 13->55 57 Maps a DLL or memory area into another process 13->57 59 Sample uses process hollowing technique 13->59 61 Queues an APC in another process (thread injection) 13->61 16 explorer.exe 13->16 injected process9 dnsIp10 25 www.tamedandframed.co.uk 81.17.18.194, 49765, 49766, 80 PLI-ASCH Switzerland 16->25 27 www.sleepcouncil.co.uk 213.171.195.105, 49770, 49771, 80 ONEANDONE-ASBrauerstrasse48DE United Kingdom 16->27 29 5 other IPs or domains 16->29 35 System process connects to network (likely due to code injection or exploit) 16->35 20 raserver.exe 13 16->20         started        signatures11 process12 signatures13 45 Tries to steal Mail credentials (via file / registry access) 20->45 47 Tries to harvest and steal browser information (history, passwords, etc) 20->47 49 Deletes itself after installation 20->49 51 2 other signatures 20->51
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c5f31d9d3c1a204926f1a87c5873b01ba37153af5e55594ac5037091d56026ac/
Threat name:
Win32.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2022-08-24 08:23:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
54
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yxzr3hj4diqesjxrvb6fq45qdorxcu5plzkvsswfanyjdvlae2wa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/220824-1h674accg6/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
8a6b47a718c32024087ddf680f447fa92620112acb97b5e0d02a89e2b1a617f6
MD5 hash:
3addec9f1399f8159933ec60e5dc8e86
SHA1 hash:
286f2e71868d0957660ef2c932d62e17bb2e5b83
Detections:
win_formbook_g0
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win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0f6dba7d-3bfb-4ffa-99c1-dd53d6ed406e/
Parent samples :
28ef8e19f33ee91bd8cd2e0fcbc9b9cf328313c543f65aaeb116646916e99fb0
c5f31d9d3c1a204926f1a87c5873b01ba37153af5e55594ac5037091d56026ac
c7557c5b17e5816621fe3613fc728513f3cc7868f46a3740b762413a460922a9
4994e7acf451ce7d8abdccb79cce806011f09bd49a811fcd2689f32a51fdee09
24dbe688a855d9f0c1db91574e24837ab537b63a2e69c8a55240b14f151e5ed2
84780665db026468f4cbe135a5f51f838688b9e208aa126620114debcbc3fa23
SH256 hash:
ceda93fdfce3ad8e4f800d4f2d940d793b68b4b0b254b652bf42e13dbd189ba7
MD5 hash:
786afe844ec1723b635cace747b60efd
SHA1 hash:
fa647a584a7fcad392147a182e3a2435b3ad5bb9
Link:
https://www.unpac.me/results/0f6dba7d-3bfb-4ffa-99c1-dd53d6ed406e/
SH256 hash:
d60fad8dfa6ffb4c24ee25b7ee0e2c318a041e1b6f920986a47b8e92659214a2
MD5 hash:
1f917df28f43b888cfa831d54e463022
SHA1 hash:
8d20ea1e5ea85a12f9743af9dc112cadd66bb385
Link:
https://www.unpac.me/results/0f6dba7d-3bfb-4ffa-99c1-dd53d6ed406e/
SH256 hash:
d9e21996577d251fbbb9689c851d625d5bbf46cfa1f712d146b5da638807706b
MD5 hash:
89fdb76f87f4a6f29575b83119ea363b
SHA1 hash:
47b02fa020d28c99d8d9dd8510d6ac8f8df5e774
Link:
https://www.unpac.me/results/0f6dba7d-3bfb-4ffa-99c1-dd53d6ed406e/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/0f6dba7d-3bfb-4ffa-99c1-dd53d6ed406e/
SH256 hash:
c5f31d9d3c1a204926f1a87c5873b01ba37153af5e55594ac5037091d56026ac
MD5 hash:
b6b09e5fccbf7a14fd8aea53fe74a965
SHA1 hash:
e0e895f275ea67473d0ef8bcc42d9bf7558ba528
Link:
https://www.unpac.me/results/0f6dba7d-3bfb-4ffa-99c1-dd53d6ed406e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c5f31d9d3c1a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/c5f31d9d3c1a204926f1a87c5873b01ba37153af5e55594ac5037091d56026ac

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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/300979/
  
URLhaus
https://urlhaus.abuse.ch/url/2271081/
  
URLhaus
https://urlhaus.abuse.ch/url/2277338/

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