MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a. 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 2 File information Comments
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SHA256 hash: 4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a
SHA3-384 hash: a6c17d40280bb10aab4879e8e8952d7524c632336d0193de549d2d8b9e3526a9766ca46686be44ac6fb55dc7aca98a92
SHA1 hash: f0c80f1d6ace27df947df38aae7b11ed4b6d7144
MD5 hash: 0282fb6d3422cdebf88ba2d9ce0831af
humanhash: indigo-pizza-leopard-fix
File name:0282fb6d3422cdebf88ba2d9ce0831af.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:769'536 bytes
First seen:2021-05-06 07:27:58 UTC
Last seen:2021-05-06 08:02:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger)
ssdeep 12288:kMwR0KK4DZin8ctCAj+Fv0qACXUc5PcwS8TaS10S4CGUS8Zt5T+FkQI7IP25U6M+:kK4VinxtCJ0qhSzG0S3GUSETbQI8A
Threatray 4'357 similar samples on MalwareBazaar
TLSH E1F4235127283A6CEB7DDB759620438602F8B247D64ACB2E2F99712C3CD74861325BF7
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
116
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/151413/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.624-1.UNOFFICIAL
Create hunting rule

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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/713417
Signature
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)
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
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
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: 405638 Sample: krcgN6CaG9.exe Startdate: 06/05/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 8 other signatures 2->42 10 krcgN6CaG9.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\krcgN6CaG9.exe.log, ASCII 10->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 10->52 14 krcgN6CaG9.exe 10->14         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.wujingli.com 156.253.123.107, 49705, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 17->30 32 makaladiggsfitness.com 162.241.226.70, 49706, 80 UNIFIEDLAYER-AS-1US United States 17->32 34 3 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 svchost.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:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a/
Threat name:
Win32.Trojan.Swotter
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Status:
Malicious
First seen:
2021-05-05 10:30:38 UTC
AV detection:
24 of 47 (51.06%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j6z37i5p2t6qe6x7kwtmxpemhwjpwxoyjpfj3ch7re4srja3tifa._file
Verdict:
malicious
Similar samples:
2a728511ab345b4207ea5959439df12205796548388cc170b427110f9cc247dd
Formbook
5aa64b3eef03b9c837e37102be20cb4f537c524b2a2531bf1bf6dd6a02461d7e
Formbook
625140ec60caaae03895c18ad400c65f5d5b15f55c7a01eb419a4215d295a6ee
Formbook
7f81bdd235dca279812a46cec7f585bde9d681906dba1398e8ac86dfc877d079
Formbook
988d84650b91424e291cb84ef84433cbd4214622365b226d925d71ffda0bccb8
Formbook
a01cc1fb91c9f7d7490e45a84b861e7188a0f3d97769710af895ee843a19699c
Formbook
b03f6bc5eec0f24076b3ef2c761b21d75c489ad34c5f94dcffab6d2b4d65263f
Formbook
d69345d398849a377103e09925aca369a6ee8fdaca08745d3bbb02aa79eb2861
Formbook
d8e0edf1cca3b6edefcd830e233131c593997b5bd4454891dc1b70614862f718
Formbook
e8baf97ad51faed006287d1f01f921df0f677d4f056d35697158d30aa24ace9b
Formbook
+ 4'347 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210506-kcrre6v3zx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.projectx-dev.net/hci/
Unpacked files
SH256 hash:
bdf79e57b5574f9bafb56f6d0592f5ee429df7eb0ad536fbdb4f2956aae36f87
MD5 hash:
826b29e2a141b055a5491c9d7dc6eea7
SHA1 hash:
af4201362b8603bf7e4b6e2ead1cfb610dd7c0a9
Link:
https://www.unpac.me/results/a0767332-39c2-4d9e-8c56-1fa40167b5bf/
SH256 hash:
4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a
MD5 hash:
0282fb6d3422cdebf88ba2d9ce0831af
SHA1 hash:
f0c80f1d6ace27df947df38aae7b11ed4b6d7144
Link:
https://www.unpac.me/results/a0767332-39c2-4d9e-8c56-1fa40167b5bf/
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/4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a

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 4fb3bfa3afd4fd027aff55a6cbbc8c3d92fb5dd84bca9d88ff893928a41b9a0a

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/151413/
  
URLhaus
https://urlhaus.abuse.ch/url/1199290/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1199441/

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