MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a9e1d5a74f9b83b90dc64bb6a21fa8837f8ae355627c78698a6e077d6c7d284. 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
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SHA256 hash: 8a9e1d5a74f9b83b90dc64bb6a21fa8837f8ae355627c78698a6e077d6c7d284
SHA3-384 hash: 1ca61b2179ae9488b836f1bedc69fab662672354f128e458e74b7cf76070a46d0d7dcf3d71203861bc5665e5203868d7
SHA1 hash: 3b387d93e2f75b4aed1d8fc3a00ce5bb2fc76f11
MD5 hash: 1f683c725e1326af4ba6b15cb99dc05b
humanhash: high-oxygen-indigo-video
File name:1f683c725e1326af4ba6b15cb99dc05b.exe
Download: download sample
Signature Formbook
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File size:798'720 bytes
First seen:2021-12-14 16:43:59 UTC
Last seen:2021-12-14 18:45:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:WYC7JAYHyxHykq0Ih/pv3Dy+/tSG6XqQUA2G0QNZhK:QAMirsRfDyMZN22GlNZh
Threatray 10'066 similar samples on MalwareBazaar
TLSH T17D056C1136981B68F0FC8B759560480823F3BC17EB61FA4F7DA53DEE367AE834652612
File icon (PE):PE icon
dhash icon 0c3bcccc8e8e4c0f (1 x Formbook)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
186
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1f683c725e1326af4ba6b15cb99dc05b.exe
Verdict:
Malicious activity
Analysis date:
2021-12-14 16:45:54 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/6892d154-0295-4ced-99ac-789818bd497f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/214044/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.38278565.18474.26933.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61b8c9da47bb875c085d911a/reports/73efb66a-fb30-438f-9e1a-de8370197158/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4fc39f7c-87c6-4064-b8ac-119ced8ac818
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/907243
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 domain / URL
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
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: 539717 Sample: fhs2UR1fSG.exe Startdate: 14/12/2021 Architecture: WINDOWS Score: 100 39 Multi AV Scanner detection for domain / URL 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 6 other signatures 2->45 10 fhs2UR1fSG.exe 15 3 2->10         started        process3 dnsIp4 37 textbin.net 51.79.99.124, 443, 49762 OVHFR Canada 10->37 29 C:\Users\user\AppData\...\fhs2UR1fSG.exe.log, ASCII 10->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 10->57 59 Hides that the sample has been downloaded from the Internet (zone.identifier) 10->59 61 Injects a PE file into a foreign processes 10->61 15 fhs2UR1fSG.exe 10->15         started        file5 signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 18 explorer.exe 15->18 injected process9 dnsIp10 31 watchgurushop.com 2.57.90.16, 49830, 80 AS-HOSTINGERLT Lithuania 18->31 33 domains.listvt.com 54.159.4.226, 49844, 80 AMAZON-AESUS United States 18->33 35 3 other IPs or domains 18->35 47 System process connects to network (likely due to code injection or exploit) 18->47 22 systray.exe 18->22         started        signatures11 process12 signatures13 49 Self deletion via cmd delete 22->49 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/8a9e1d5a74f9b83b90dc64bb6a21fa8837f8ae355627c78698a6e077d6c7d284/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-12-14 08:57:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
50
AV detection:
18 of 28 (64.29%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rkpb2wtu7g4dxeg4ms5wuip2ra37rlrvkyt4pbuyu3qhpvwh2kca._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
2686f473fe5da84f006e169c030663eb661a79a3f6bf0e0ce024d9a3519b3efd
Formbook
974a753b6be631d76aa556b3eb8c6638783a410bd0fbf6e4982a4ae41cf8c305
Formbook
9b9e383f7635be680129b113ad1e827c61e2e2cf1ce7ccccd2f09b9a0a546494
Formbook
b13ec93e4289b68f8ca2393cc944add42fef7c7395ae2c5878d0a47185660c9e
Formbook
d5f714301345a7bd1ff1414c0f0ca54fa6187283e4319835610c36ccc3f4d9a5
Formbook
dcee55c9896715272cfd344a7a62fe6c5dbe0e61d7d8548beeda46c15bd8e07c
Formbook
fa5f726e3f04e8773ec7a1bdbc23974e1a009a67b3836d8e5c23f5cf7df18672
Formbook
+ 10'056 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:kl23 rat spyware stealer trojan
Link:
https://tria.ge/reports/211214-t8tlcshbbl/
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.1679t0rvek1esxhore02143.com/kl23/
Unpacked files
SH256 hash:
8a9e1d5a74f9b83b90dc64bb6a21fa8837f8ae355627c78698a6e077d6c7d284
MD5 hash:
1f683c725e1326af4ba6b15cb99dc05b
SHA1 hash:
3b387d93e2f75b4aed1d8fc3a00ce5bb2fc76f11
Link:
https://www.unpac.me/results/82a1577d-372a-471a-a17e-6b512320322f/
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/8a9e1d5a74f9b83b90dc64bb6a21fa8837f8ae355627c78698a6e077d6c7d284

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
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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 8a9e1d5a74f9b83b90dc64bb6a21fa8837f8ae355627c78698a6e077d6c7d284

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1881416/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/214044/

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