MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af9e4af9e1c7c2991d0fe0e5eedd11a819cb5d697ef75606ae620f3b7fd20775. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
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SHA256 hash: af9e4af9e1c7c2991d0fe0e5eedd11a819cb5d697ef75606ae620f3b7fd20775
SHA3-384 hash: ff999afd8154043b39f929a08ad13aa7af3e05ad862cf09b3136f3968e96f0d933ebb9e67f732fa3f3478eb891b09e8d
SHA1 hash: 940a937103f7f406291c416c6ec4d601fbca7234
MD5 hash: 616a10fdc3307fd483916e1b578c9f9c
humanhash: zulu-nitrogen-enemy-coffee
File name:616a10fdc3307fd483916e1b578c9f9c
Download: download sample
Signature Formbook
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File size:939'008 bytes
First seen:2021-06-14 09:31:37 UTC
Last seen:2021-06-14 11:51:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:TuyAioqXVnyKKvkCB7dEnfDzVd+rl7GJNeBUdt:BF1Kv1d2fDJArUJwBU
TLSH A0157AF1A5B147C3D39EDDF183CAB3848B6F4AA235328215A85C22FC26DD18E55CE587
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
135
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
616a10fdc3307fd483916e1b578c9f9c
Verdict:
Suspicious activity
Analysis date:
2021-06-14 09:36:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d36f2f43-66b7-4c7c-b0a1-6abcd1455d10

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Variant.MSILHeracles.17940.31869.3542.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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:
njRAT
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/137ad63c-90ff-4844-8bf4-aa07d1d511d1
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/801705
Signature
.NET source code contains method to dynamically call methods (often used by packers)
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
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Process Start Without DLL
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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: 434101 Sample: r6trewjl88 Startdate: 14/06/2021 Architecture: WINDOWS Score: 100 29 www.rocketschool.net 2->29 31 www.saimeisteel.com 2->31 33 rocketschool.net 2->33 51 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 9 other signatures 2->57 9 r6trewjl88.exe 3 2->9         started        13 explorer.exe 2->13         started        signatures3 process4 dnsIp5 27 C:\Users\user\AppData\...\r6trewjl88.exe.log, ASCII 9->27 dropped 59 Tries to detect virtualization through RDTSC time measurements 9->59 16 r6trewjl88.exe 9->16         started        19 r6trewjl88.exe 9->19         started        35 www.loundxgroup.com 91.227.139.235, 49720, 80 DIGICABLEHU Hungary 13->35 37 www.myenduringlegacy.com 13->37 39 3 other IPs or domains 13->39 61 System process connects to network (likely due to code injection or exploit) 13->61 21 rundll32.exe 13->21         started        file6 signatures7 process8 signatures9 41 Modifies the context of a thread in another process (thread injection) 16->41 43 Maps a DLL or memory area into another process 16->43 45 Sample uses process hollowing technique 16->45 47 Queues an APC in another process (thread injection) 16->47 49 Tries to detect virtualization through RDTSC time measurements 21->49 23 cmd.exe 1 21->23         started        process10 process11 25 conhost.exe 23->25         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/af9e4af9e1c7c2991d0fe0e5eedd11a819cb5d697ef75606ae620f3b7fd20775/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-06-11 10:11:42 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210614-xq42b2g5jj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.rocketschool.net/nf2/
Unpacked files
SH256 hash:
e987e066b6b1ca5c3698a367d405b671a7f33e388289cb6b191faf4796478596
MD5 hash:
8b3814abb5e9cd9fb5da34bc71a4afc2
SHA1 hash:
8005c030dd9d0c1f146d18c4597f0a0f55e16577
Link:
https://www.unpac.me/results/c223488a-5046-44ac-8864-5cc39d46533e/
SH256 hash:
af9e4af9e1c7c2991d0fe0e5eedd11a819cb5d697ef75606ae620f3b7fd20775
MD5 hash:
616a10fdc3307fd483916e1b578c9f9c
SHA1 hash:
940a937103f7f406291c416c6ec4d601fbca7234
Link:
https://www.unpac.me/results/c223488a-5046-44ac-8864-5cc39d46533e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/af9e4af9e1c7c2991d0fe0e5eedd11a819cb5d697ef75606ae620f3b7fd20775

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: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 af9e4af9e1c7c2991d0fe0e5eedd11a819cb5d697ef75606ae620f3b7fd20775

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1364587/

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