MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f1f7a42018ffd700c3b6a90efbcf67c5cb7130cbb3eaea0989adfd865ddaf785. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
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SHA256 hash: f1f7a42018ffd700c3b6a90efbcf67c5cb7130cbb3eaea0989adfd865ddaf785
SHA3-384 hash: e8f2f8c03fc21d4d243f3de7589ba379cab5bdc53899777d083d4defde0b86297bc05b222ff69d1eaedaa825708418d9
SHA1 hash: c2962e553dd4733a9da27657d6b99c4450ffe2c9
MD5 hash: 6814a6505b576dea349ff0ddf1d51a34
humanhash: potato-fillet-xray-oxygen
File name:6814a6505b576dea349ff0ddf1d51a34.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:555'008 bytes
First seen:2022-01-15 10:21:44 UTC
Last seen:2022-01-15 11:49:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'634 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:5nK777777777777N7KPA16BOsuyAgx6ke5nueN8Tmvs:1K777777777777lKITgc5nlNU
Threatray 12'734 similar samples on MalwareBazaar
TLSH T1A9C4F00F735A9232CEF15A38589548508FB96C9F6502C25639F8FEAD35B33C5190E3AA
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
280
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6814a6505b576dea349ff0ddf1d51a34.exe
Verdict:
Malicious activity
Analysis date:
2022-01-15 10:23:43 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/de95826f-6cc0-4632-8d9a-f9de7f6ab918

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/219501/
Detection(s):
SecuriteInfo.com.Trojan.Siggen16.32620.20626.16656.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe obfuscated packed
Link:
https://www.filescan.io/uploads/61e2a0501883c5ba4ecf60f3/reports/1f834180-9625-4f98-abfe-f7f644e0a45a/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/d39cf3ad-aabe-4f02-8cae-a054f5d1aaee
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/921144
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
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 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 signatures2 2 Behavior Graph ID: 553620 Sample: obvxwAs7cb.exe Startdate: 15/01/2022 Architecture: WINDOWS Score: 100 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 10 other signatures 2->44 10 obvxwAs7cb.exe 3 2->10         started        process3 file4 30 C:\Users\user\AppData\...\obvxwAs7cb.exe.log, ASCII 10->30 dropped 58 Tries to detect virtualization through RDTSC time measurements 10->58 60 Injects a PE file into a foreign processes 10->60 14 obvxwAs7cb.exe 10->14         started        17 obvxwAs7cb.exe 10->17         started        signatures5 process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 Queues an APC in another process (thread injection) 14->68 19 explorer.exe 14->19 injected process8 dnsIp9 32 wellingtonsloupe.com 216.172.184.138, 49812, 80 UNIFIEDLAYER-AS-1US United States 19->32 34 www.xin129.xyz 103.143.10.221, 49813, 80 STARNET7-ASJuweriyahNetworksPrivateLimitedIN Hong Kong 19->34 36 2 other IPs or domains 19->36 46 System process connects to network (likely due to code injection or exploit) 19->46 48 Performs DNS queries to domains with low reputation 19->48 23 mstsc.exe 19->23         started        signatures10 process11 signatures12 50 Self deletion via cmd delete 23->50 52 Modifies the context of a thread in another process (thread injection) 23->52 54 Maps a DLL or memory area into another process 23->54 56 Tries to detect virtualization through RDTSC time measurements 23->56 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f1f7a42018ffd700c3b6a90efbcf67c5cb7130cbb3eaea0989adfd865ddaf785/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-01-14 17:32:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
23 of 43 (53.49%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
045c15ef3a76b61d487b30e3e554c77afbc4f3fc17078d3818b5392de608a92e
Formbook
0c510fde61332c2e2aacbfa4d1b7b7c9163e135ff116b7a99191a076728566bf
Formbook
52c5a7bea43160bab3e96178238af584fbcf648172ef43517c71e755526756f6
Formbook
5c05ff860f7d421506e3e20e83b955a148ec9f4429313881d1c4f1bd22f58e3f
Formbook
6a7753dba591a0f953c07a4e13ef1682c3839bcc380545a647da6e24bef41786
Formbook
7ed04ae044306c081040b3b0711a8d2fc725996e5f529a94c7ca88b56a944d75
Formbook
9b9e383f7635be680129b113ad1e827c61e2e2cf1ce7ccccd2f09b9a0a546494
Formbook
da9e890626946b96039a20cc107a0f7f0bc13440d9ede74799b6f9a2514e3759
Formbook
fc69e6c5574428d1463b12e28954ffe967456b3cd133e5ff61f46972f1afa975
Formbook
+ 12'724 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:n0k1 rat spyware stealer trojan
Link:
https://tria.ge/reports/220115-md8y8sdgg5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
91127b33b695f24ccc731003d70cce08ffd0741ecbbb6b71b18295d990f2e80f
MD5 hash:
bade1e5c541f459c8d46d7113c2253ee
SHA1 hash:
0292a596756a082135e569c8ac57f60e6ed71c45
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/f2eceff2-4895-4041-9040-bad4e1da31d2/
Parent samples :
5c05ff860f7d421506e3e20e83b955a148ec9f4429313881d1c4f1bd22f58e3f
f1f7a42018ffd700c3b6a90efbcf67c5cb7130cbb3eaea0989adfd865ddaf785
af0fecfaa578184482893c6a88aea692e9a2dd8dddba0a51fb08ce81ff01e13c
0b4545838e8a848f0a54b02582f6d49494b3352dfd88d39d6ba2051c420270a6
SH256 hash:
9ea5e947e024f0ea8ecaa409bfaec1e7660ad20569ecad7573c9ed198e0e3a33
MD5 hash:
14c6602fae4aab798f1c18a1f60d3b9c
SHA1 hash:
d2d88d21ee6084f0f5423f0599646e559f7fa1d0
Link:
https://www.unpac.me/results/f2eceff2-4895-4041-9040-bad4e1da31d2/
SH256 hash:
d528647e324badff8d33ce3b0085c351cfd661f24866693fff867393094be66d
MD5 hash:
6e916938050a36a7ffe5ad7b4b783065
SHA1 hash:
5c2d271400a7dbcde2e58f8a3008813fc4346b24
Link:
https://www.unpac.me/results/f2eceff2-4895-4041-9040-bad4e1da31d2/
SH256 hash:
f1f7a42018ffd700c3b6a90efbcf67c5cb7130cbb3eaea0989adfd865ddaf785
MD5 hash:
6814a6505b576dea349ff0ddf1d51a34
SHA1 hash:
c2962e553dd4733a9da27657d6b99c4450ffe2c9
Link:
https://www.unpac.me/results/f2eceff2-4895-4041-9040-bad4e1da31d2/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/f1f7a42018ffd700c3b6a90efbcf67c5cb7130cbb3eaea0989adfd865ddaf785

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
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.

Web download

Formbook

Executable exe f1f7a42018ffd700c3b6a90efbcf67c5cb7130cbb3eaea0989adfd865ddaf785

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1955626/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/219501/

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