MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b438197380888791997705ce5dfb8eadc354f559f9ec8f00629c9ef56b7589d1. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b438197380888791997705ce5dfb8eadc354f559f9ec8f00629c9ef56b7589d1
SHA3-384 hash: d219657c559b57c23da9359ea0f826149b421a78e383b6d04357960bb8766888a94f19d46b6441f6f95ca262a0d41338
SHA1 hash: 598bc90f91954545d1e9d1ad93e85ae070eb9daa
MD5 hash: 98ae4a3128ce5c191dfd2eb895b25dcc
humanhash: wisconsin-nuts-october-stairway
File name:98ae4a3128ce5c191dfd2eb895b25dcc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:519'680 bytes
First seen:2021-09-22 06:18:27 UTC
Last seen:2021-09-22 07:14:22 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:/lQWmtiK5oBNQ5bxPmHufp8Mec6tzPnxBdw7e:3+FoBobme8Mec6V5oK
Threatray 9'474 similar samples on MalwareBazaar
TLSH T113B4223DC77CA735C969D7BF1021860A0BB192C97B13FB6D6F57B0C87906B8051298EA
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
243
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
98ae4a3128ce5c191dfd2eb895b25dcc.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-22 06:22:18 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c1c7f4e6-86e5-4532-8bc7-376d90888b2e

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/190067/
Detection(s):
SecuriteInfo.com.Suspicious.Win32.Save.a.20182.20434.UNOFFICIAL
Create hunting rule

Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2179d519-f1fd-4e22-b225-87ee4279d8ec
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/855360
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 487793 Sample: cMmzeVzjTO.exe Startdate: 22/09/2021 Architecture: WINDOWS Score: 100 31 www.sellhomefastinorlando.com 2->31 33 www.svetarielt.site 2->33 35 sellhomefastinorlando.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 8 other signatures 2->49 11 cMmzeVzjTO.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\cMmzeVzjTO.exe.log, ASCII 11->29 dropped 63 Tries to detect virtualization through RDTSC time measurements 11->63 65 Injects a PE file into a foreign processes 11->65 15 cMmzeVzjTO.exe 11->15         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Maps a DLL or memory area into another process 15->69 71 Sample uses process hollowing technique 15->71 73 Queues an APC in another process (thread injection) 15->73 18 explorer.exe 15->18 injected process9 dnsIp10 37 www.runbank.net 195.149.114.22, 49821, 80 NICUA-ASUA Ukraine 18->37 39 www.itsready.support 198.54.117.244, 49820, 80 NAMECHEAP-NETUS United States 18->39 41 11 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 53 Uses ipconfig to lookup or modify the Windows network settings 18->53 22 ipconfig.exe 18->22         started        signatures11 process12 signatures13 55 Self deletion via cmd delete 22->55 57 Modifies the context of a thread in another process (thread injection) 22->57 59 Maps a DLL or memory area into another process 22->59 61 Tries to detect virtualization through RDTSC time measurements 22->61 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b438197380888791997705ce5dfb8eadc354f559f9ec8f00629c9ef56b7589d1/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-22 06:19:13 UTC
AV detection:
17 of 45 (37.78%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
06db28157cbf8afaef9fada2db963f0a1f81a266512c748dc6ea86d371036900
Formbook
16e9e1b6560d4566dc705cf7504391ae585affc16a7cd70fc8c881e25eb230d4
Formbook
3884e83634368ece061a97583d17bfdfe4247af9f8d507f4b594eaabf499e1c9
Formbook
3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
Formbook
6a031ff99c704ce956ff83791f0face2196fef52ee2672d860dce78e917b8f77
Formbook
7ed2e1a088d8af23bee0d7b23fe435a181f597991cebfffbcc1ed43f31198f87
Formbook
9e5d79a5c4d56511b27b25b7c4ddb73e8c10c15168676b90291b8ba66a6239c4
Formbook
bb913402040958a639d6c22b1df958de0aa304d51c00eb5aaa106077edb85310
Formbook
e911d332af82b2e6fe66b7d2df23b5a9ba0443ea8f83500ae17c6af1f65d401b
Formbook
e94b8626361ef2ef783dbb4c5662c62a2f27f79e7453b0831805a04541e0ac12
Formbook
+ 9'464 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:uytf loader rat
Link:
https://tria.ge/reports/210922-g27hesbga2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.fasilitatortoefl.com/uytf/
Unpacked files
SH256 hash:
9c33f04ebf1782711ec0c00a43d9334adf0a10d7ab4bc3d2c49aa8b4e64a3685
MD5 hash:
e124dde00ff92ae52bc44bd15b8597dc
SHA1 hash:
490b3216176f364fa02b4a0ad18868a1f3fef662
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c2d597b5-c712-40ed-8f4f-bc30b2429917/
Parent samples :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 hash:
cac8b347040a359c02ae5e658d3d76230c7dd7eb33505605ed0b9bc49ff268c7
MD5 hash:
71a894ff252c767b80d65ab1e54fda2b
SHA1 hash:
bcc4ff628585ca28b8b0f2c30e63049b910d4d49
Link:
https://www.unpac.me/results/c2d597b5-c712-40ed-8f4f-bc30b2429917/
SH256 hash:
17b1884207efd65d56e32a2f2e919ca85a1536c56ae949429193744cae09d09c
MD5 hash:
361897d6667156fcc0824dd892b0bbf3
SHA1 hash:
7343682f8d090e211937d7bca3cef2f634281698
Link:
https://www.unpac.me/results/c2d597b5-c712-40ed-8f4f-bc30b2429917/
SH256 hash:
e01c522ce24194da1dd7b2c63b214fb0d6b315c5d6967a2e6ca63a67256dc976
MD5 hash:
4f1f48df78a94026e717c09082ed04a5
SHA1 hash:
24eb393049edef7f7b18bfdd799601587b72f674
Link:
https://www.unpac.me/results/c2d597b5-c712-40ed-8f4f-bc30b2429917/
SH256 hash:
b438197380888791997705ce5dfb8eadc354f559f9ec8f00629c9ef56b7589d1
MD5 hash:
98ae4a3128ce5c191dfd2eb895b25dcc
SHA1 hash:
598bc90f91954545d1e9d1ad93e85ae070eb9daa
Link:
https://www.unpac.me/results/c2d597b5-c712-40ed-8f4f-bc30b2429917/
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/b438197380888791997705ce5dfb8eadc354f559f9ec8f00629c9ef56b7589d1

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: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 b438197380888791997705ce5dfb8eadc354f559f9ec8f00629c9ef56b7589d1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1630843/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1631109/
Cape
Cape
https://www.capesandbox.com/analysis/190067/
  
URLhaus
https://urlhaus.abuse.ch/url/1639336/

Comments