MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798. 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 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798
SHA3-384 hash: c576e76efe8ce7c60718fe55972208d05f882c1ccae2efe3d8246275791fbc4f357aa40779d5f78b6e67b5d781656767
SHA1 hash: 0f0da09baa06c0c07a4dedd5297cf98282ee648b
MD5 hash: 3f7fb7ea38ef370de09b4b709d07e0e8
humanhash: black-kansas-carpet-fourteen
File name:3f7fb7ea38ef370de09b4b709d07e0e8
Download: download sample
Signature Formbook
Create hunting rule
File size:752'640 bytes
First seen:2023-05-05 10:54:56 UTC
Last seen:2023-05-13 22:42:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:Qrir0fbWj3MS3Snu6XG4bOelHhSdd8J9qCiTAG:QzaRku6W4U8J9HQ
Threatray 3'331 similar samples on MalwareBazaar
TLSH T1ADF4E1252366FF91ECA583F87608E4015FA06C50A3BDE7E84CCFF0D95188B19F654A97
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
236
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
05052023R1.xls
Verdict:
Malicious activity
Analysis date:
2023-05-05 09:58:45 UTC
Tags:
opendir exploit cve-2017-11882 loader formbook xloader
Link:
https://app.any.run/tasks/f1b179a2-6c48-4006-9cff-8b6007458e3d

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/386758/
Detection(s):
SecuriteInfo.com.Variant.Barys.351838.3864.26740.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6454e08ad131c04f6ae38c9c/reports/9a39167f-ce17-4f60-82c0-d26d241d1edc/overview
Verdict:
Malicious
Labled as:
Barys.Generic
Link:
https://www.hybrid-analysis.com/sample/81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798
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/d71cf7c2-b105-46d1-ba3a-3cda4d532e49
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1226803
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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 detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 859767 Sample: 9VJOvjgbUm.exe Startdate: 05/05/2023 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 7 other signatures 2->48 10 9VJOvjgbUm.exe 3 2->10         started        process3 file4 34 C:\Users\user\AppData\...\9VJOvjgbUm.exe.log, ASCII 10->34 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 54 Injects a PE file into a foreign processes 10->54 14 9VJOvjgbUm.exe 10->14         started        17 9VJOvjgbUm.exe 10->17         started        19 9VJOvjgbUm.exe 10->19         started        21 9VJOvjgbUm.exe 10->21         started        signatures5 process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 Queues an APC in another process (thread injection) 14->68 23 explorer.exe 1 1 14->23 injected process8 dnsIp9 36 www.hiringhelpingconsultants.tech 23->36 38 www.bijouryjewels.com 23->38 40 bijouryjewels.com 34.102.136.180, 49698, 80 GOOGLEUS United States 23->40 50 System process connects to network (likely due to code injection or exploit) 23->50 27 svchost.exe 23->27         started        signatures10 process11 signatures12 56 Modifies the context of a thread in another process (thread injection) 27->56 58 Maps a DLL or memory area into another process 27->58 60 Tries to detect virtualization through RDTSC time measurements 27->60 30 cmd.exe 1 27->30         started        process13 process14 32 conhost.exe 30->32         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798/
Threat name:
ByteCode-MSIL.Trojan.Barys
Create hunting rule
Status:
Malicious
First seen:
2023-05-05 10:55:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qh5cicthbpumotqcrfx6udop5umdqozci2r22u7xv7lrjb66c6ma._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2799249b9775bcf4a66a5f7fc52a40959815b1bb4b2b882b4f1e57d5dec406c1
Formbook
3674a39f9ada533ddff15f070a08cb1b9761877d5193e86b215811214250a394
Formbook
3dca60e7a32bc81165f399bab2162271332156e05c490ed4af3972713a1cb0f4
Formbook
44a297e5ccf344c0422f4f80b2c490f2650bf44c142f131378b2eb6a6507bc9b
Formbook
61141d9453d13d203de8255903f1aec9fea4906616f000cca0b906a58d754cca
Formbook
72ab6b20fff5f1384506c7a3943c3c8f9d3ce2ecc79197f0ad8274ae1a2150fd
Formbook
8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b
Formbook
b5f2e0b49faad7f9714d0b1088965647eb83d8772b234555738bcea1094dfd2f
Formbook
c2720f6ee1602fecf28ce957b38accc0ebd54a27a466872b4863bb3edf063670
Formbook
e843a90ec56b0efbd176b3856d811875e24b98ae6fdf77985e1b77916ab4259b
Formbook
+ 3'321 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ie59 rat spyware stealer trojan
Link:
https://tria.ge/reports/230505-mz4xeabd9v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
1b9ddfe66cb6c18b47eed140f8a108e27d7ab426ca88631c81376ca128d79fde
MD5 hash:
0ac3ff2e7644fe915aff384a91d7ca4b
SHA1 hash:
c70091fa0eceb31d46bf5436cc7066719c9dc50b
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/2c1ee746-e309-4df2-a1c1-e8b0402e539d/
Parent samples :
3674a39f9ada533ddff15f070a08cb1b9761877d5193e86b215811214250a394
c2720f6ee1602fecf28ce957b38accc0ebd54a27a466872b4863bb3edf063670
81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798
SH256 hash:
21f0154b51a09767f94922b81f5fcd15cf4a6390ab7314e40d0e17b2dcdfe6ba
MD5 hash:
c926563698de3a89ad20474c85122f73
SHA1 hash:
ed1a3b2527ace111e6f39880c7ee3965f301330d
Link:
https://www.unpac.me/results/2c1ee746-e309-4df2-a1c1-e8b0402e539d/
SH256 hash:
280001013946838a651abbdee890fa4a4d49c382b7b5e78b7805caef036304e2
MD5 hash:
d4b6893a5512534104c6c7403be60897
SHA1 hash:
d4b51c3e4cafb3b146435a4e2e21bb5ddf15956d
Link:
https://www.unpac.me/results/2c1ee746-e309-4df2-a1c1-e8b0402e539d/
SH256 hash:
1264dd43fdd378337362f63d7fbbdee63e6f18756e5138366dded5a4d6e7f5e2
MD5 hash:
70a7e243176bdc1cd7cc27b4de3d80d4
SHA1 hash:
a66b60affa25586f689b2c603d489d8a08dcc628
Link:
https://www.unpac.me/results/2c1ee746-e309-4df2-a1c1-e8b0402e539d/
SH256 hash:
2a3dcd014efb2bfe78c846fb5a5fbed371d4d5c280c1a6ba5ee0cd85bd5799c4
MD5 hash:
9262bafff1cba0a6f3c11309c6122850
SHA1 hash:
75ca6955ccd307de79b61da61020a82d5f3f8b08
Link:
https://www.unpac.me/results/2c1ee746-e309-4df2-a1c1-e8b0402e539d/
SH256 hash:
81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798
MD5 hash:
3f7fb7ea38ef370de09b4b709d07e0e8
SHA1 hash:
0f0da09baa06c0c07a4dedd5297cf98282ee648b
Link:
https://www.unpac.me/results/2c1ee746-e309-4df2-a1c1-e8b0402e539d/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/81fa240a670b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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 81fa240a670be8c74e02896fea0dcfed18383b2246a3ad53f7afd71487de1798

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/386758/
  
URLhaus
https://urlhaus.abuse.ch/url/2625144/

Comments


Avatar
zbet commented on 2023-05-05 10:54:59 UTC

url : hxxp://103.155.81.71/1_00__99/vbc.exe