MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3bcb18dda143e601f302a1cd248189f553d03ffbd707a05a3df3048f0c5b407. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments
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SHA256 hash: b3bcb18dda143e601f302a1cd248189f553d03ffbd707a05a3df3048f0c5b407
SHA3-384 hash: 575cc84b8de31d1265b4b5acf2d9ed0642aa81903bffabf13295e0280de4dce73815c8d132ea201b80482b41f0167b9f
SHA1 hash: 31bf2e8c7b123cd7c04899fb64bbe3832823e217
MD5 hash: e6c47976b4d53fd52464cfc18c8a57af
humanhash: oklahoma-alpha-chicken-mango
File name:scan001.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:347'094 bytes
First seen:2022-12-08 20:26:44 UTC
Last seen:2022-12-09 10:31:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 97318da386948415d08cef4a9006d669 (71 x Formbook, 35 x SnakeKeylogger, 26 x AgentTesla)
ssdeep 6144:9kwUZdjCHZAGW3UgK9Xa64EIcdM5Rqyz7t/SLkopNYXhH7jsL2Sk8csUv3YWlZ:QdjM6UgiXpycW3qaRkkyNq7jU2SVUv3B
TLSH T14B7423E426E26AFFC0514231A672CB5BEFEB63450424334BEB506EFEB9254E1C84D895
TrID 92.7% (.EXE) NSIS - Nullsoft Scriptable Install System (846567/2/133)
3.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
1.1% (.EXE) Win64 Executable (generic) (10523/12/4)
0.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter TeamDreier
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
187
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/344480/
Detection(s):
SecuriteInfo.com.FileRepMalware.22237.12316.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Searching for synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6392489d55eb3470cd4ff841/reports/5947242c-3c7b-4de4-b8f4-f8b7217cce62/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3b2f0f0c-89ad-4a66-b1ec-16ebd317e365
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1131025
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 763749 Sample: scan001.exe Startdate: 08/12/2022 Architecture: WINDOWS Score: 100 33 Snort IDS alert for network traffic 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 4 other signatures 2->39 9 scan001.exe 19 2->9         started        process3 file4 25 C:\Users\user\AppData\...\rorndxxfhn.exe, PE32 9->25 dropped 12 rorndxxfhn.exe 9->12         started        process5 signatures6 51 Antivirus detection for dropped file 12->51 53 Multi AV Scanner detection for dropped file 12->53 55 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 12->55 57 Maps a DLL or memory area into another process 12->57 15 rorndxxfhn.exe 12->15         started        process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 15->18 injected process9 dnsIp10 27 www.dkc010.com 141.193.156.186, 49707, 49709, 80 NETSEC-HKNETSECHK Hong Kong 18->27 29 www.notecheck.online 198.54.121.81, 49715, 49716, 80 NAMECHEAP-NETUS United States 18->29 31 3 other IPs or domains 18->31 41 System process connects to network (likely due to code injection or exploit) 18->41 22 systray.exe 13 18->22         started        signatures11 process12 signatures13 43 Tries to steal Mail credentials (via file / registry access) 22->43 45 Tries to harvest and steal browser information (history, passwords, etc) 22->45 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3bcb18dda143e601f302a1cd248189f553d03ffbd707a05a3df3048f0c5b407/
Threat name:
Win32.Trojan.FormBook
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Status:
Malicious
First seen:
2022-12-08 10:03:27 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wo6lddo2cq7gahzqfionesayt5kt2a77xvyhubnd34yer4gfwqdq._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:9qtp rat spyware stealer trojan
Link:
https://tria.ge/reports/221208-y8evesbd52/
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Executes dropped EXE
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/24977f74-957f-41f5-ac66-efd17f6d124d
Unpacked files
SH256 hash:
8592b7f93e78a00380df2aea6ed7de12bdaec761f355541f590557f08d50b93d
MD5 hash:
c9abc6ccfeb0c7da9a00da6ae55125e1
SHA1 hash:
c77f14dfb348254c7bb9db4cc29381d66118c9c7
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/b5cf7610-03ec-4364-a1e8-ab9961f198f6/
SH256 hash:
aa7122cdca1c48ebffdcfaa61316bf5ccf6d5e2ca5f17c34061214c0b3dc11b1
MD5 hash:
f1faf3ccf0e81e3978f95e263d1f4cf0
SHA1 hash:
cfdc8ef766670346bab220c6c8bd1877b9a27313
Link:
https://www.unpac.me/results/b5cf7610-03ec-4364-a1e8-ab9961f198f6/
SH256 hash:
129988cf2f3ef8ffb9bc08c9d531aed945d11db9692717d3580995f3ba04b036
MD5 hash:
f12285640b646ce0d0037c85862ac08b
SHA1 hash:
ec010e15a90c97b70de508df4450f2c281d26bf3
Link:
https://www.unpac.me/results/b5cf7610-03ec-4364-a1e8-ab9961f198f6/
SH256 hash:
b3bcb18dda143e601f302a1cd248189f553d03ffbd707a05a3df3048f0c5b407
MD5 hash:
e6c47976b4d53fd52464cfc18c8a57af
SHA1 hash:
31bf2e8c7b123cd7c04899fb64bbe3832823e217
Link:
https://www.unpac.me/results/b5cf7610-03ec-4364-a1e8-ab9961f198f6/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3bcb18dda14/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/b3bcb18dda143e601f302a1cd248189f553d03ffbd707a05a3df3048f0c5b407

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe b3bcb18dda143e601f302a1cd248189f553d03ffbd707a05a3df3048f0c5b407

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/344480/

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