MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bd5c83d0ec09eb7019537466d0c3c1469986dce8c358041f65be1a60a6b6fe4. 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 5 File information Comments
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SHA256 hash: 4bd5c83d0ec09eb7019537466d0c3c1469986dce8c358041f65be1a60a6b6fe4
SHA3-384 hash: d54d9116f129118c3548ab0c75bc24569dcec88397bf25bbeacd5a31606c31cc7d31e8c24e6e8727976635f7732f9345
SHA1 hash: 3dc03d3a6c25ab2e6ba0f84fb1ba632c187f15f5
MD5 hash: 94253a7c421aeba9e411730ba3f3c897
humanhash: mirror-paris-colorado-ack
File name:vbc(2).exe
Download: download sample
Signature Formbook
Create hunting rule
File size:650'752 bytes
First seen:2021-09-07 08:41:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:zekab2HjopE0b4oXLHjGi/R0dURXVk61:zeka2o5DHCURkmXV
Threatray 9'090 similar samples on MalwareBazaar
TLSH T1E5D40B3E19FE23279176C7D5CBE08923F6C098AF3233A96567D747664306A4674C322E
Reporter JAMESWT_WT
Tags:exe FormBook VelvetSweatshop

Intelligence

File Origin
# of uploads :
1
# of downloads :
246
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO211000386.xlsx
Verdict:
Malicious activity
Analysis date:
2021-09-07 07:39:11 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/a726cfe6-aa53-484b-86bc-a8d7ee83331e

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/185960/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.43380.10963.7956.UNOFFICIAL
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Result
Verdict:
Clean
Maliciousness:
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8c2ca757-5f5e-4f37-86d4-e54aa29239ab
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/846404
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
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)
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
Sigma detected: CMSTP Execution Process Creation
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 dnsIp2 2 Behavior Graph ID: 478840 Sample: vbc(2).exe Startdate: 07/09/2021 Architecture: WINDOWS Score: 100 33 www.blackwelldesignco.com 2->33 35 www.abc-staff.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 9 other signatures 2->49 11 vbc(2).exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\AppData\...\vbc(2).exe.log, ASCII 11->31 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 15 vbc(2).exe 11->15         started        18 vbc(2).exe 11->18         started        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 20 explorer.exe 15->20 injected process9 dnsIp10 37 www.aronexcorp.com 45.195.163.111, 49730, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 20->37 39 www.valueplants.com 20->39 41 13 other IPs or domains 20->41 51 System process connects to network (likely due to code injection or exploit) 20->51 24 cmstp.exe 20->24         started        signatures11 process12 signatures13 53 Self deletion via cmd delete 24->53 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/4bd5c83d0ec09eb7019537466d0c3c1469986dce8c358041f65be1a60a6b6fe4/
Threat name:
Win32.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-09-07 06:44:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
8 of 36 (22.22%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
01459f26c9c160284fbb5d73fe3e2c05634295c07c78b9667107950526af179c
Formbook
083652d241877c1d5b89477de317ceea0cf34bb4f790c59e597fd5ba33184aff
Formbook
12de2f015642b7430fdf5e76d186dc2c38161f4e2238e84d8dd9e4125d3bceec
Formbook
33a9702e83888498799c0144e3a3ac06e095aa452ce066a02a3860dcd90d6bb8
Formbook
3c30562fe4d02debdc7ff0d3a101e4807010b779166bbafd25ae0fd068b7255a
Formbook
4474153b57e54b4c94dc0c4e063dde0a7f296bc8f20a7a5d41d99d91c4239cc0
Formbook
bf9f97f369f730dbe091c7a5304ae2503f61eb0f226bfc763e0681cf07035618
Formbook
+ 9'080 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:imi7 loader rat suricata
Link:
https://tria.ge/reports/210907-kl25jsfeaq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.southerngiggle.com/imi7/
Unpacked files
SH256 hash:
ea88e40b750a9f44289afb18b9096c14c1a0d81ae92bd236fe3fd15bf9f8dd27
MD5 hash:
8110d942a1afd5a03fb68ef51e9bce54
SHA1 hash:
d22bf05fd3f760e6f65d5ab239adf71c25f0be09
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/41147914-8d96-4c38-a3d7-05ccf399e382/
Parent samples :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 hash:
9a569be1313734a7a5657149f890204e1246833e80ac0e45c15b9ebc972cfa99
MD5 hash:
db1ca79a10eb8debc020653b67a41ed4
SHA1 hash:
c9aff868749946879d85e0c75c11a085d3c244c2
Link:
https://www.unpac.me/results/41147914-8d96-4c38-a3d7-05ccf399e382/
SH256 hash:
9c83a9a6e8b00de6152b55534a53526afb15fab82fa75194bc72c095ee407f58
MD5 hash:
c4398723e1fef1f23c7a2bb4fc54a45c
SHA1 hash:
6592c141e7cf588e1ea7fba78e0bf4bbfc903689
Link:
https://www.unpac.me/results/41147914-8d96-4c38-a3d7-05ccf399e382/
SH256 hash:
4bd5c83d0ec09eb7019537466d0c3c1469986dce8c358041f65be1a60a6b6fe4
MD5 hash:
94253a7c421aeba9e411730ba3f3c897
SHA1 hash:
3dc03d3a6c25ab2e6ba0f84fb1ba632c187f15f5
Link:
https://www.unpac.me/results/41147914-8d96-4c38-a3d7-05ccf399e382/
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/4bd5c83d0ec09eb7019537466d0c3c1469986dce8c358041f65be1a60a6b6fe4

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:Embedded_PE
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Rule name:Embedded_PE
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Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
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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 4bd5c83d0ec09eb7019537466d0c3c1469986dce8c358041f65be1a60a6b6fe4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1599123/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/185960/

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