MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37f6df44b9dd38408fe5682c6d660eceb04a2915b3420576afce05bf3076bc01. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 37f6df44b9dd38408fe5682c6d660eceb04a2915b3420576afce05bf3076bc01
SHA3-384 hash: d2a2850f5bd8b7d1e2da9999e517268864e4a107668367e0e1a01bfd34a4589763f542d068069b91fa3e1a780dcc7c17
SHA1 hash: b2b8d261784991e3c14c6577447362cb6d72634c
MD5 hash: bb367436118b3298affddea50440ac12
humanhash: fish-uncle-fillet-cardinal
File name:bb367436118b3298affddea50440ac12.exe
Download: download sample
Signature Formbook
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File size:1'453'568 bytes
First seen:2021-08-12 06:35:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:3JdXpDQCEm+SSboh6Htaw0gjLozE+LiBUVtfX/KT2fX1k/HmUVpGF9EVxlm:3JDBCh82j0zE+LiIKT2fX1vOm
Threatray 7'729 similar samples on MalwareBazaar
TLSH T19265D43C29B92627D1BAC375CBE59827F4409CAF3551BD94A4CA73660372B5239C323E
dhash icon e4b8b878fcdcf9f0 (9 x Formbook, 5 x AgentTesla, 4 x Loki)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
298
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bb367436118b3298affddea50440ac12.exe
Verdict:
Malicious activity
Analysis date:
2021-08-12 06:38:19 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/52802a95-735e-441c-bbf1-f1c2f8bd5e84

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/178478/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Agensla.ic.1334.22648.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Result
Verdict:
UNKNOWN
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/730de2f5-9947-4bce-90bd-0a11ad1cedfc
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/831525
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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 (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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 463954 Sample: w8n37YS0j1.exe Startdate: 12/08/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 7 other signatures 2->42 10 w8n37YS0j1.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\w8n37YS0j1.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 14 w8n37YS0j1.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.1996-page.com 98.124.204.16, 49741, 80 ENOMAS1US United States 17->30 32 shops.myshopify.com 23.227.38.74, 49737, 80 CLOUDFLARENETUS Canada 17->32 34 3 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 cmd.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/37f6df44b9dd38408fe5682c6d660eceb04a2915b3420576afce05bf3076bc01/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-12 05:32:28 UTC
AV detection:
8 of 46 (17.39%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g73n6rfz3u4ebd7fnawg2zqoz2yeukivwnbak5vpzyc36mdwxqaq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
29df0bb962a305621b5f1d2a5cf0eaeae9381872e2a329230e833e6db7c999fa
Formbook
4dc8cb12314311a3bf1b1afa5cc5483284fda573f18c15ab0fef18b7b9ef9f98
Formbook
8309d803c92faaf24828cd67e4c1041f9465ecf6c63f7608d7ed4579f075a02c
Formbook
9a55287be3d6c8a74a0aa6ee3a5ea4e288ba968e44c271c9ea5d2293c8300d07
Formbook
9d090a84e1769af41a7724bfbc082e60f50a8a10cf88378a4c3ca24420aade71
Formbook
9dac57302e2261a1a3c6a665d3960525b27fb70a1fd6b1e135a3e72f11c6f3e6
Formbook
c70917b8034aedf54cf578fa9db38399a6129376bc7d06cacd6b324fed45c5a7
Formbook
e47fa9824fd9f5f8e8b42fb02f53cfbf57b7c784d54c9e76ed247a9d297835cf
Formbook
+ 7'719 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:kzk9 rat spyware stealer trojan
Link:
https://tria.ge/reports/210812-jyfls8t1ve/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.yourmajordomo.com/kzk9/
Unpacked files
SH256 hash:
9d083e6711fa05d81808595ccb256ebec25439983acc2a4d9bf991a31767fc9e
MD5 hash:
d4aad17cf070ec0b2ebc71e1c86b5d48
SHA1 hash:
cf86991474de99b5998fd75f68b56dcb4e5879f5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f716141c-9122-4c05-8fbd-338a74e6cf69/
Parent samples :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 hash:
33ac6b8012ce739e72022086b5d39b7fc030c20fa72988f76957685509d5c041
MD5 hash:
83f8ae95a7e6f016f6b00482588086e6
SHA1 hash:
70392939d6d60a913b51084ec1d98eaae8ca4868
Link:
https://www.unpac.me/results/f716141c-9122-4c05-8fbd-338a74e6cf69/
SH256 hash:
62d6823ef65f67752855edb2e0a996153e7180166bbfa865030b748af897ce89
MD5 hash:
7353c9a922ae14e60d9c3204e75c9511
SHA1 hash:
201730c66933afd66b9f46cd77b36618550bc796
Link:
https://www.unpac.me/results/f716141c-9122-4c05-8fbd-338a74e6cf69/
SH256 hash:
37f6df44b9dd38408fe5682c6d660eceb04a2915b3420576afce05bf3076bc01
MD5 hash:
bb367436118b3298affddea50440ac12
SHA1 hash:
b2b8d261784991e3c14c6577447362cb6d72634c
Link:
https://www.unpac.me/results/f716141c-9122-4c05-8fbd-338a74e6cf69/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/37f6df44b9dd/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/37f6df44b9dd38408fe5682c6d660eceb04a2915b3420576afce05bf3076bc01

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
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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 37f6df44b9dd38408fe5682c6d660eceb04a2915b3420576afce05bf3076bc01

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1525208/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/178478/
  
URLhaus
https://urlhaus.abuse.ch/url/1527094/

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