MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d337c03f89aeea3f12d185e748407801dac07b5d6fef1acb99e085b0f452ed0. 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 1 File information Comments
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SHA256 hash: 8d337c03f89aeea3f12d185e748407801dac07b5d6fef1acb99e085b0f452ed0
SHA3-384 hash: 9ca75327e80aee90688e2dada09deef89a670821b079af37127692e1611f96b431f284e19b90620439afada1fcc8728d
SHA1 hash: dac1a0a63b8846255d813e62bbd54bc1bdfbd5fa
MD5 hash: ac344a8f028ee5c95a5f56b208263051
humanhash: video-victor-lamp-saturn
File name:4478884ce2cf578bf0a0d2484fc8221e5ff63d7cbc73d5200bacbd6e2796e017
Download: download sample
Signature Formbook
Create hunting rule
File size:730'624 bytes
First seen:2021-09-15 00:40:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 48363177332cef840c51cef50a86516c (3 x RemcosRAT, 2 x Formbook, 1 x OskiStealer)
ssdeep 12288:xX8lG7bLQlI+h4Y+RNEVpgnoWO2ucgD6g8LxoKnKVHc:xs+LQbh0KUoWO2uh2KVH
Threatray 9'271 similar samples on MalwareBazaar
TLSH T131F48DD094E5D2F0D03376FC6D5EB681F415BCA4BB289DAE46A9CC4B1E359E12C720A3
dhash icon 274e4d3305010141 (7 x RemcosRAT, 2 x NetWire, 2 x Formbook)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
242
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4478884ce2cf578bf0a0d2484fc8221e5ff63d7cbc73d5200bacbd6e2796e017
Verdict:
Suspicious activity
Analysis date:
2021-09-15 00:40:53 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1107e4dd-c679-419e-959c-2596388fa289

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/187938/
Detection(s):
PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

SecuriteInfo.com.UDS.Backdoor.Win32.Remcos.gen.30206.347.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/617513219a5a1e91c5d20235/reports/e49c6238-8c7d-426f-9b23-e44bbbf6a226/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a22adce7-c36b-4c3c-b308-95dc214be54f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/851035
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 483463 Sample: 4478884ce2cf578bf0a0d2484fc... Startdate: 15/09/2021 Architecture: WINDOWS Score: 100 34 Found malware configuration 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 4 other signatures 2->40 10 4478884ce2cf578bf0a0d2484fc8221e5ff63d7cbc73d5200bacbd6e2796e017.exe 14 2->10         started        process3 dnsIp4 32 cdn.discordapp.com 162.159.133.233, 443, 49736, 49737 CLOUDFLARENETUS United States 10->32 52 Writes to foreign memory regions 10->52 54 Allocates memory in foreign processes 10->54 56 Creates a thread in another existing process (thread injection) 10->56 58 Injects a PE file into a foreign processes 10->58 14 logagent.exe 10->14         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 2 other signatures 14->66 17 explorer.exe 14->17 injected process8 dnsIp9 28 www.qxkbjgj.icu 47.91.170.222, 49778, 80 CNNIC-ALIBABA-US-NET-APAlibabaUSTechnologyCoLtdC United States 17->28 30 www.tymudanzaramos.com 17->30 42 System process connects to network (likely due to code injection or exploit) 17->42 44 Uses netstat to query active network connections and open ports 17->44 21 NETSTAT.EXE 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8d337c03f89aeea3f12d185e748407801dac07b5d6fef1acb99e085b0f452ed0/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2021-09-14 10:27:20 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ruzxya7ytlxkh4jndbphjbahqao2yb5v237pdlfztyefwd2ff3ia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0726096c82c2c643c7de2ed48533e0a545e71f2294433cd7df473aebe9f17681
Formbook
2388b4254ae1d29a43fbd10b1f2c7c1dbf28fb89c0a2a0adc2e9a68625416e7e
Formbook
4fa4620f075ed6875b96da8c661287fc12c586ddc524c866a6861a6a94a26bee
Formbook
53cd0bb46c1d8aa4dc128569b2c2b2b13f0d4a1357e464e5eec019a7f11195d6
Formbook
92fee75dbfa7cb48d837b580cc3544832cf116d9991ac9cd0135cef22e535510
Formbook
c26154711ca9d9d48de370f242deb560bd0b99a0c8f12a2d1db5d4cd6e25d107
Formbook
cad578cb66b96125accf74e291decfbfa2026857ec0efcae51a25ba4cc185ddc
Formbook
ee3cd0b8ec089cdcec65b22189ecc9efb9f356afe0870e424cbdedcf19920e13
Formbook
+ 9'261 additional samples on MalwareBazaar
Result
Malware family:
modiloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:modiloader campaign:n7ak persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/210915-a1rx1sbean/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
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
Adds Run key to start application
Adds policy Run key to start application
Formbook Payload
Formbook
ModiLoader, DBatLoader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Malware Config
C2 Extraction:
http://www.kmresults.com/n7ak/
Unpacked files
SH256 hash:
519197f521aa39b7a7ab34b4500a304a7329d967115c2e48fe1b6eb201e39af1
MD5 hash:
3da921c9355d01d335cf03159a950030
SHA1 hash:
3be3f4ea8f289a123dcd1f6ac97c6f34a503c9cf
Link:
https://www.unpac.me/results/f861ba3e-609e-42de-970a-f71804b76182/
SH256 hash:
8d337c03f89aeea3f12d185e748407801dac07b5d6fef1acb99e085b0f452ed0
MD5 hash:
ac344a8f028ee5c95a5f56b208263051
SHA1 hash:
dac1a0a63b8846255d813e62bbd54bc1bdfbd5fa
Link:
https://www.unpac.me/results/f861ba3e-609e-42de-970a-f71804b76182/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8d337c03f89a/report/overview.html
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/8d337c03f89aeea3f12d185e748407801dac07b5d6fef1acb99e085b0f452ed0

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: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

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/187938/

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