MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8b812944865a54d38070a2c21e7299bf0687d0343c02244546aaa728642e4ff. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
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SHA256 hash: b8b812944865a54d38070a2c21e7299bf0687d0343c02244546aaa728642e4ff
SHA3-384 hash: 9ed109b0f2a90d927b53571575098a69f186e765d5295cd387102676c0bfefc2eaa37df69736b37e5081e1129a541e2f
SHA1 hash: 00bb3ce921f622bafe39674b329ce64a11c2db39
MD5 hash: c1e4c19f71a5427489874cab7fea94d2
humanhash: fifteen-july-alaska-echo
File name:Касова бележка.exe
Download: download sample
Signature Formbook
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File size:342'714 bytes
First seen:2021-10-25 07:39:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 6144:VBlL/kE286EZdTrOI/+gHZh50mkhaxEDNw2qFNze2Bf/KmsaAFZAdg:D6E2864v9HN0WUaLfzeUf/PFdg
Threatray 11'027 similar samples on MalwareBazaar
TLSH T1F8749EE1E76448B6E8376378B8B76C262023E979E771005E16DDF72A4E3334305B6987
File icon (PE):PE icon
dhash icon c8ccccc0c0d0f074 (9 x Formbook, 2 x BitRAT, 1 x NanoCore)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
159
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/199812/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.2.19166.20671.UNOFFICIAL
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Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/6176a31edb358dd15ed93268/reports/3f2c39c5-466f-4994-a548-8ee7a3d12578/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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3788da6b-2741-4b9f-8157-6477c7c89fd3
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/876339
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
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
Performs DNS queries to domains with low reputation
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 virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 508772 Sample: #U041a#U0430#U0441#U043e#U0... Startdate: 25/10/2021 Architecture: WINDOWS Score: 100 31 www.bigizy.com 2->31 33 bigizy.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 7 other signatures 2->47 11 #U041a#U0430#U0441#U043e#U0432#U0430 #U0431#U0435#U043b#U0435#U0436#U043a#U0430.exe 17 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\nqqogkviakn.dll, PE32 11->29 dropped 63 Injects a PE file into a foreign processes 11->63 15 #U041a#U0430#U0441#U043e#U0432#U0430 #U0431#U0435#U043b#U0435#U0436#U043a#U0430.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 35 connect.shopbase.com 185.223.154.31, 49866, 80 REDSERVICIOES Spain 18->35 37 www.bspq-jlcd.com 202.58.21.27, 49834, 80 NCIC-TWNewCenturyInfoCommTechCoLtdTW Hong Kong 18->37 39 14 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 51 Performs DNS queries to domains with low reputation 18->51 53 Uses netsh to modify the Windows network and firewall settings 18->53 22 netsh.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:
n/a
Link:
https://mwdb.cert.pl/sample/b8b812944865a54d38070a2c21e7299bf0687d0343c02244546aaa728642e4ff/
Threat name:
Win32.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-10-25 06:46:47 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xc4bffcimwsu2oahbiwcdzzjtpygq7idipacercunkvhfbsc4t7q._file
Verdict:
malicious
Label(s):
formbook
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1076b9efbc0e135c85f1228253f9a1d2f35f4fd49c70d290de72808f72bd56eb
Formbook
26a7d60148b01f0b2c57abaac977514cbc0d31606ae151f200f0b9c04fdf0ad3
Formbook
2728dc98fdebc00823b877eba49ace782c17db8a07074634aafca9dc00277776
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7716fec715a46b0eb4518d53703b0fc2186e6a473a876de7aee9155ec289f93a
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832c65a202ec1c69a8297af3d2fc3d233ac65b7c2c670f30d0694089601c9cfe
Formbook
aa768c2c6e6e99313d1de9367ad2b894ce051ae3ce3ed1aeedc806ab8b0a0f80
Formbook
ac4a0328d512526f20122f0399d557b1334f3b2ac264d9e749d6d2788e956b2e
Formbook
dae6ba220bb0a34de731b57965753391343bfe96f9f3fa4fea48102d3377ccf7
Formbook
+ 11'017 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/211025-jhjy5afge7/
Behaviour
Enumerates physical storage devices
Unpacked files
SH256 hash:
b8b812944865a54d38070a2c21e7299bf0687d0343c02244546aaa728642e4ff
MD5 hash:
c1e4c19f71a5427489874cab7fea94d2
SHA1 hash:
00bb3ce921f622bafe39674b329ce64a11c2db39
Link:
https://www.unpac.me/results/0c972852-68a7-40e3-a106-f3144bf36471/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.47
Link:
https://yomi.yoroi.company/submissions/b8b812944865a54d38070a2c21e7299bf0687d0343c02244546aaa728642e4ff

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
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Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe b8b812944865a54d38070a2c21e7299bf0687d0343c02244546aaa728642e4ff

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/199812/

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