MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bf1bfba1cf627cb2d0670980e2cf6931ae7ed1feaf0082d086a8364f1c355c43. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments
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SHA256 hash: bf1bfba1cf627cb2d0670980e2cf6931ae7ed1feaf0082d086a8364f1c355c43
SHA3-384 hash: 878eebda5dddcef7044b1d3b7676431605e9744d8c109c0a609ae8233defdfe7c73e2d2446a9068207512a635a0ec38c
SHA1 hash: f701766b6e2583fbeb25638b267798dc248a8516
MD5 hash: 6b79bff950885e957d51a04c3328b350
humanhash: nitrogen-football-alanine-idaho
File name:file.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:534'016 bytes
First seen:2022-06-20 10:47:58 UTC
Last seen:2022-06-20 14:09:02 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:6Jypy6FEoZOW2GGb2GhNetpwD8VzHgpV2nYG+2Z03jj7qGTbNMJM9KThGdCa4gr8:S2iNeX08Vza4NPZ03/7HN2tMCa4e+B
TLSH T184B401046A7C4A72EA38C7FC09E3618053FC6426D256F7A88FD671DB9C63B464A90737
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
229
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/281539/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b05072d37f6643508e7d76/reports/216287b9-043b-4690-a93d-1a4a4e25631c/overview
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/2f796202-e6c8-477f-8f88-5de60ad02388
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1016488
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
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
Snort IDS alert for network traffic
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: 648981 Sample: file.exe Startdate: 20/06/2022 Architecture: WINDOWS Score: 100 34 Snort IDS alert for network traffic 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 Antivirus detection for URL or domain 2->38 40 6 other signatures 2->40 10 file.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\Local\...\file.exe.log, ASCII 10->28 dropped 50 Tries to detect virtualization through RDTSC time measurements 10->50 52 Injects a PE file into a foreign processes 10->52 14 file.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.guizhourenshi.com 45.194.187.247, 49817, 80 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 17->30 32 www.wuhanjingcheng.com 17->32 42 System process connects to network (likely due to code injection or exploit) 17->42 21 cscript.exe 17->21         started        signatures10 process11 signatures12 44 Modifies the context of a thread in another process (thread injection) 21->44 46 Maps a DLL or memory area into another process 21->46 48 Tries to detect virtualization through RDTSC time measurements 21->48 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/bf1bfba1cf627cb2d0670980e2cf6931ae7ed1feaf0082d086a8364f1c355c43/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-06-20 09:38:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=x4n7xiopmj6lfudhbgaoft3jggxh5up6v4aifuegva3e6hbvlrbq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:rn34 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220620-mv4qvaceap/
Behaviour
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
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
0c10dc87b77e44e72cb06987e1428dd413ae84e34857a1b9ba6cf9ad40512f5c
MD5 hash:
339469131bb6b65cc89a6da432ecb583
SHA1 hash:
125fc82dc41ef29ade7d10de2714b678cc6154d7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/2541b628-1e91-4991-8502-591422aa4c4b/
Parent samples :
591223ca16887fbab10fb075f2e050c931b049aa812e82706106211c1b2692ba
9a95de1cbc2bc1bbb8b87c0ea935b9c6675ce2a712465a40cbb2f4dfb85d711f
bf1bfba1cf627cb2d0670980e2cf6931ae7ed1feaf0082d086a8364f1c355c43
SH256 hash:
6de8bc7d4844efdb55328126b632a374bee9aaf3073cf9ca5fe5fdf303106f8e
MD5 hash:
7ce2d10bd0f02667bc0e1343d9ffc1c1
SHA1 hash:
c3a5b4e5721085022eb7bf0008b7e449f9369fcf
Link:
https://www.unpac.me/results/2541b628-1e91-4991-8502-591422aa4c4b/
SH256 hash:
ab5b0d9051dc4733c809c70588caf892cb2c97d810502e60d4cd421a72e8e357
MD5 hash:
88e4f88b7146187ed1fc5067e125a774
SHA1 hash:
45de6099a10ed18b05681d89cadc3d61b146fc71
Link:
https://www.unpac.me/results/2541b628-1e91-4991-8502-591422aa4c4b/
SH256 hash:
f03160f38cf869d98133726c6a2bc21557df486d74a6ec9835118fa3e16556a1
MD5 hash:
7988db4a9813abe80a1ab234ffe4327d
SHA1 hash:
1d285ea8f52cba854430a27fe4b8110680f16380
Link:
https://www.unpac.me/results/2541b628-1e91-4991-8502-591422aa4c4b/
SH256 hash:
bf1bfba1cf627cb2d0670980e2cf6931ae7ed1feaf0082d086a8364f1c355c43
MD5 hash:
6b79bff950885e957d51a04c3328b350
SHA1 hash:
f701766b6e2583fbeb25638b267798dc248a8516
Link:
https://www.unpac.me/results/2541b628-1e91-4991-8502-591422aa4c4b/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bf1bfba1cf62/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/bf1bfba1cf627cb2d0670980e2cf6931ae7ed1feaf0082d086a8364f1c355c43

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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.

Malspam

Formbook

Executable exe bf1bfba1cf627cb2d0670980e2cf6931ae7ed1feaf0082d086a8364f1c355c43

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/281539/

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