MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651
SHA3-384 hash: 2b782529217852b5e284053ae59cb3a28614493ee379fa1a8c949acff29e7aff947f2a79d85fe8c1dbd7748ebc29a8ad
SHA1 hash: f677a68c0cf634372001f5506c6681e06e5120a9
MD5 hash: c04f70436cf53db113a202251a48c4a5
humanhash: football-crazy-florida-alabama
File name:altnp3zI5hfg3Eg.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'328'640 bytes
First seen:2021-07-29 22:22:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 24576:G3S/d3YKzks/ksNBRWSnlbLF8CRAd56w/PdGhopy8jhMN6ZNbZ:oKJBRfnFFZUoishopCN6ZNb
Threatray 6'606 similar samples on MalwareBazaar
TLSH T1C655E024C98C9FA6CC5C03740A9946745EF1ADE6F270D46C3D8E32B1B7F182ADAB5345
dhash icon c4b4e6e69898d2c4 (11 x Formbook, 11 x AgentTesla, 4 x NanoCore)
Reporter Racco42
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
146
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
altnp3zI5hfg3Eg.exe
Verdict:
Malicious activity
Analysis date:
2021-07-29 22:24:52 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/32747243-93f6-45e5-a61e-76f411b267ef

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/175150/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.967-1.UNOFFICIAL
Create hunting rule

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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2e6016f3-3471-41f1-bb0c-f6940f032722
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/824158
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 456569 Sample: altnp3zI5hfg3Eg.exe Startdate: 30/07/2021 Architecture: WINDOWS Score: 100 35 www.krystalpacifico.com 2->35 37 clientconfig.passport.net 2->37 39 3 other IPs or domains 2->39 47 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 4 other signatures 2->53 11 altnp3zI5hfg3Eg.exe 3 2->11         started        signatures3 process4 file5 33 C:\Users\user\...\altnp3zI5hfg3Eg.exe.log, ASCII 11->33 dropped 63 Tries to detect virtualization through RDTSC time measurements 11->63 15 altnp3zI5hfg3Eg.exe 11->15         started        18 altnp3zI5hfg3Eg.exe 11->18         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 20 explorer.exe 15->20 injected process9 dnsIp10 41 dns.zhanh.com 119.28.38.189, 49702, 80 TENCENT-NET-AP-CNTencentBuildingKejizhongyiAvenueCN China 20->41 43 fleetrepsusa.com 160.153.136.3, 49722, 80 GODADDY-AMSDE United States 20->43 45 14 other IPs or domains 20->45 55 System process connects to network (likely due to code injection or exploit) 20->55 24 systray.exe 20->24         started        27 autochk.exe 20->27         started        signatures11 process12 signatures13 57 Modifies the context of a thread in another process (thread injection) 24->57 59 Maps a DLL or memory area into another process 24->59 61 Tries to detect virtualization through RDTSC time measurements 24->61 29 cmd.exe 1 24->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-07-29 11:23:34 UTC
AV detection:
11 of 46 (23.91%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tayioeg4g4kix4wzwaectz4r4gzoxetqhyonqcyt5hq2ldlvcziq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1ccdc34a2258984fb0df40dd979f71d4c11bce12cb6e840e90fbd9281254ade6
Formbook
54ab4a1cdce2eb6cac3d05ca5eb317a247a6b5e9164d8c1067f1601953ec8729
Formbook
5bcba2a09d8758ca07490dfcd3859a64b3a0092ed7873a707e73346eefd4235e
Formbook
6f42be9adbf8a5232ff93cbbd74b5616319ed32863c9b5cc9f6fb9383d618151
Formbook
91f157317f4b73121bcb06400904d5e9eff6461ea6495804878aa3c9b2966dc8
Formbook
93986eac8652157b41ac4464bed7584c6b0c04a3fcdd8bcda47592df69fee3ba
Formbook
a6169937c872aefc3f1e5c13e40f05d9cb0cbba3a16490f134b810b47027b035
Formbook
a62281360a594e22783fb5dfc0e34645726b22df9ae0939b56a5b41e51289f97
Formbook
e59a1d022c6c4f0cc7d23689004e65ea7f1f940adef98cf891a008dd9d7f66d9
Formbook
+ 6'596 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat suricata
Link:
https://tria.ge/reports/210729-an6j5qadkn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
CustAttr .NET packer
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.pourheloise.com/c8ec/
Unpacked files
SH256 hash:
4a48a05eb81cac749c6dea42ea3816237bbb8684f0f8d1636b1be2fa65436a64
MD5 hash:
84c057f09100400b8375a193af3ee861
SHA1 hash:
90ade0a4616f4b3924f5a0d2d61c73e0cfc54939
Detections:
win_formbook_g0
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win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/cde6e3d1-7ff9-4e39-a476-ba37b9f82fae/
Parent samples :
98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651
2f36f2e2951a2540ab138afc8ac70f8bb37b83f01199434e247aa6716e1eb47a
2ae08b5584e30abd315edad1daa90759d442646ade096f38b6534d00f69e811b
39e4d2034ff07b9ba247022d53f2e8444e2eea2eb94addc571d004f59037e3e2
SH256 hash:
97d2fa1d01b2f9a2199896e05e0cf60c14a9f41ef2d72e15fbb862b7afa08438
MD5 hash:
68463851c0e6fe7a254c99fae763d454
SHA1 hash:
4587a5371d88c296a0184fe47ee0c5245b187127
Link:
https://www.unpac.me/results/cde6e3d1-7ff9-4e39-a476-ba37b9f82fae/
SH256 hash:
ca8e59dd3810b50078ca27266c0be4fe045881af802e9380b3b512154675c2cc
MD5 hash:
23209321f4c07649557e0a15f0087cb0
SHA1 hash:
0579c923367c5da1c8d6312b0c0b82ca6ed17315
Link:
https://www.unpac.me/results/cde6e3d1-7ff9-4e39-a476-ba37b9f82fae/
SH256 hash:
98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651
MD5 hash:
c04f70436cf53db113a202251a48c4a5
SHA1 hash:
f677a68c0cf634372001f5506c6681e06e5120a9
Link:
https://www.unpac.me/results/cde6e3d1-7ff9-4e39-a476-ba37b9f82fae/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651

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
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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 98308710dc37148bf2d9b00829e791e1b2eb92703e1cd80b13e9e1a58d751651

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/175150/

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