MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83806181eaf99abe4f92d4f5846837c73053239ec7412072913834e33721673c. 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: 83806181eaf99abe4f92d4f5846837c73053239ec7412072913834e33721673c
SHA3-384 hash: cc857f69e9b7e8b1951b7922797c4d8ce3bbe074f8ecd8f67c7d4b99d325f18218c69b606fae9b43dda21ddcfd9eb1e3
SHA1 hash: 29693b399b7c6f10bd9ac9d70dba8ce692d79b4e
MD5 hash: a3b279c78ce92388983da57305043399
humanhash: steak-timing-artist-diet
File name:file.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:900'608 bytes
First seen:2021-08-06 05:16:45 UTC
Last seen:2021-08-06 06:18:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'750 x AgentTesla, 19'653 x Formbook, 12'248 x SnakeKeylogger)
ssdeep 12288:81fswW7MnMFmNeTvM7QeFIsAjucAnJm38BoJOudGv2p0OrMqWce4c:81fsJAnlNCM59c0JvtukORXWcep
Threatray 6'589 similar samples on MalwareBazaar
TLSH T16915BF0AFB887EE9D25D0E36E527145843F6C2675A33F39F38DA6AD414123968E4F423
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
310
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
06082021.doc
Verdict:
Malicious activity
Analysis date:
2021-08-06 05:16:25 UTC
Tags:
exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/85a72bce-ae59-4d7b-b3a3-937b359bf13d

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/176870/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Kryptik.2546ff6b.8376.11536.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
DNS request
Connection attempt
Sending a UDP request
Creating a window
Creating a file in the Windows subdirectories
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
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:
Agent Tesla
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2ae1c826-86ec-44fc-b2a4-ecf1f0bb9a9b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/828075
Signature
.NET source code contains very large array initializations
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)
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 virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 460502 Sample: file.exe Startdate: 06/08/2021 Architecture: WINDOWS Score: 100 34 www.askplusconsulting.com 2->34 36 askplusconsulting.com 2->36 38 www.vrognj.com 2->38 56 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 5 other signatures 2->62 10 file.exe 15 4 2->10         started        signatures3 process4 dnsIp5 46 www.google.com 142.250.185.228, 443, 49734 GOOGLEUS United States 10->46 30 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->30 dropped 32 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 10->32 dropped 64 Writes to foreign memory regions 10->64 66 Hides that the sample has been downloaded from the Internet (zone.identifier) 10->66 68 Injects a PE file into a foreign processes 10->68 15 AddInProcess32.exe 10->15         started        file6 signatures7 process8 signatures9 70 Uses netsh to modify the Windows network and firewall settings 15->70 72 Modifies the context of a thread in another process (thread injection) 15->72 74 Maps a DLL or memory area into another process 15->74 76 3 other signatures 15->76 18 netsh.exe 15->18         started        21 explorer.exe 15->21 injected process10 dnsIp11 48 Modifies the context of a thread in another process (thread injection) 18->48 50 Maps a DLL or memory area into another process 18->50 52 Tries to detect virtualization through RDTSC time measurements 18->52 24 cmd.exe 1 18->24         started        40 www.misexamenes.com 23.82.230.142, 49767, 80 LEASEWEB-USA-SEA-10US United States 21->40 42 shops.myshopify.com 23.227.38.74, 49768, 80 CLOUDFLARENETUS Canada 21->42 44 2 other IPs or domains 21->44 54 System process connects to network (likely due to code injection or exploit) 21->54 26 autofmt.exe 21->26         started        signatures12 process13 process14 28 conhost.exe 24->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83806181eaf99abe4f92d4f5846837c73053239ec7412072913834e33721673c/
Threat name:
ByteCode-MSIL.Trojan.Sabsik
Create hunting rule
Status:
Malicious
First seen:
2021-08-06 01:31:59 UTC
AV detection:
9 of 46 (19.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qoagdapk7gnl4t4s2t2yi2bxy4yfgi46y5asa4urha2ognzbm46a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0b755a23b31f709cdcd39b195d0bd4d50b049bd869b1db57892fb94878992760
Formbook
0fa8114ac4b5c4ff6727117699cb2f702be6cf0a6c54ad147fefc1620f32f6aa
Formbook
3612932b02e0e97ec1ddac955833b9e572ca1c2d93fdc12c47e4ac6021459bc9
Formbook
679ce1d895289ba4b92a72e1e1c00d3698395afcbe99474308092cb3cf4272fc
Formbook
a677db1e19ef0ff96a19fb973e8505296ca98d69c2eb7f97c18f097b6786f9b7
Formbook
a86f792a5a3d424b756508cb462d3ca9b454f2513a5471df5d41da33649748e9
Formbook
b2fa4bbff4b67fef522c3b6cbc3a98b0c2f463045f19af5f96ee7a3c48ea9f93
Formbook
d1c5fc3919d75c03db6df503ba210900921351ee1bbeb45c7a435ac5671c3a9e
Formbook
ec744aeae689c95f44a24eb398e65c3a722595de5504db84b2e41488f30a7510
Formbook
fb1efc79e627fcc4485b3bbde9d948f673172715a7fb165f373f79ba31671fb8
Formbook
+ 6'579 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:goai agilenet loader rat suricata
Link:
https://tria.ge/reports/210806-vg8p91yx9e/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Obfuscated with Agile.Net obfuscator
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.nikolaslust.com/goai/
Unpacked files
SH256 hash:
83806181eaf99abe4f92d4f5846837c73053239ec7412072913834e33721673c
MD5 hash:
a3b279c78ce92388983da57305043399
SHA1 hash:
29693b399b7c6f10bd9ac9d70dba8ce692d79b4e
Link:
https://www.unpac.me/results/c3d6a978-4021-4f3f-aa59-4d3d6668e0ac/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/83806181eaf9/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/83806181eaf99abe4f92d4f5846837c73053239ec7412072913834e33721673c

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.

Malspam

Formbook

Executable exe 83806181eaf99abe4f92d4f5846837c73053239ec7412072913834e33721673c

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/176870/

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