MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922. 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: 17


Intelligence 17 IOCs YARA 1 File information Comments
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SHA256 hash: 673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922
SHA3-384 hash: fe9ad10e19a537d6a232c9a5db106d883e464206c92cb9d2dae97c50b57a1ebb883345374f9258c58d240fb0ff1e1e06
SHA1 hash: 2cedef0356e9fd3f2440bc8e46b43642179cc7b9
MD5 hash: 242d64af104531f44d2105557ebef334
humanhash: equal-india-item-coffee
File name:PO-13228.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:242'490 bytes
First seen:2023-05-15 18:50:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:/Ya6IfXmIFqXRmaVLSCv9JwnDiqqJJ1R4jMwRsWI:/YufXrOmaVLSGJJwjMwLI
Threatray 2'889 similar samples on MalwareBazaar
TLSH T17234125836D8C067F8F72773097857A26FDDA81608B0CB1F23156E687E369824D2E763
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
285
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PO-13228.exe
Verdict:
Malicious activity
Analysis date:
2023-05-15 18:52:04 UTC
Tags:
formbook xloader trojan stealer
Link:
https://app.any.run/tasks/3859612c-ec1c-4b41-ba68-baf57e0eb7f6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/390241/
Detection(s):
Sanesecurity.Malware.28885.BadCo.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Unauthorized injection to a recently created process
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/84734/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/64627f1675e587f1bf6be662/reports/9468692c-0597-46d6-8ca6-68ec29a0cb9d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922
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/b5692b11-d91e-41d4-a387-d43019639d90
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1234039
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
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)
Multi AV Scanner detection for dropped file
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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 867021 Sample: PO-13228.exe Startdate: 15/05/2023 Architecture: WINDOWS Score: 100 31 www.infinity-books.xyz 2->31 33 infinity-books.xyz 2->33 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Antivirus detection for URL or domain 2->43 45 10 other signatures 2->45 11 PO-13228.exe 19 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\kawrnszib.dll, PE32 11->29 dropped 57 Detected unpacking (changes PE section rights) 11->57 59 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 11->59 61 Maps a DLL or memory area into another process 11->61 63 Tries to detect virtualization through RDTSC time measurements 11->63 15 PO-13228.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 3 6 15->18 injected process9 dnsIp10 35 www.drone.healthcare 3.64.163.50, 49699, 49700, 80 AMAZON-02US United States 18->35 37 www.digitalcharts.xyz 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 49 Performs DNS queries to domains with low reputation 18->49 22 wscript.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-05-10 09:44:48 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
28 of 37 (75.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m46yzwt7bvjgysj5tdsf4h2rppm3rxpueicu6sa6muhjlp7tvera._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3ecf38540014a3fe10b883b34592b8e5eefb11d0e4abf64fd98129d00bf4a682
Formbook
48dcf0afe635fd456a6914465d2b79e61ddbd57d304203eeeb14cafbf5dd1e81
Formbook
51054c5181fc248a1642dc3a5cdb7f353aaf5d136aa20bdc59084970e74c5a8b
Formbook
53176c142b4a57f89c57ed969d3a578640841c09db2a58bc9f360a636c8d5947
Formbook
9def050dacc6e27a12843b50352dfb883966af1dd96d031aa35f2b30ea1867e5
Formbook
a96ec414b99747cf8859a77e2d05ea24053db3fa343474a007180dfefda658ca
Formbook
bf03cd8e5554ec62c98931069f436ec71ac21d57a8922b1bb3c1958a0a9256f3
Formbook
e014baadd84bece77f1f8366ea528671bf0bd70fcee974fe1a262bb0ec0a2565
Formbook
f3b8435e7359411cefb4d6c762550f4881195a2ec0cb035da5737c4b4891fb6f
Formbook
+ 2'879 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:mr04 rat spyware stealer trojan
Link:
https://tria.ge/reports/230515-xhf45agh67/
Behaviour
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
6169b21dc76e4e511fef5bd8cb8ecae8e3e18c46b94e898cf9ca1bc5f477cb5f
MD5 hash:
dfc6c49d8be8c2648b4a53d7925fe5d1
SHA1 hash:
e49c310fd7c0c9590d65127380360fa1151004dd
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/69422bb0-3a22-4b89-a0fa-8e8d8dd6202c/
Parent samples :
11de93e0a087c2aa575e9241184df99ddff733c7992611fda17fb6042bd8a105
673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922
8a1818f6e89fe3a6a0cae314467eb120d9e3f95ad6e17099c4f3f5e18d039929
e3d4fccd07d41f7c76da4a4602079ac0883174b59ebb2f8b4c497e703b9a46c9
364dd2fca24dd00a4f94bd807353c0cbb7576f833ef754036480bbc2778b6cad
SH256 hash:
6a69d6fee8ff314ce63d6579c53bbf197c0bdff1f6c1efdd427b252861a1298c
MD5 hash:
afaf33c5bc336264595d29bcbb9cabb2
SHA1 hash:
6c6e633d4684cc2bb345bf86c708c59608e737bb
Link:
https://www.unpac.me/results/69422bb0-3a22-4b89-a0fa-8e8d8dd6202c/
SH256 hash:
673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922
MD5 hash:
242d64af104531f44d2105557ebef334
SHA1 hash:
2cedef0356e9fd3f2440bc8e46b43642179cc7b9
Link:
https://www.unpac.me/results/69422bb0-3a22-4b89-a0fa-8e8d8dd6202c/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/673d8cda7f0d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

Formbook

Executable exe 673d8cda7f0d526c493d98e45e1f517bd9b8ddf422054f481e650e95bff3a922

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/390241/

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