MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2f43a94ed8cdf1891e4f45eedfc41247781fca19cd5047a4a95389626789e129. 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 7 File information Comments
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SHA256 hash: 2f43a94ed8cdf1891e4f45eedfc41247781fca19cd5047a4a95389626789e129
SHA3-384 hash: d28356ece7907412ffbe671ff4f6205ee0241346331d9521a9a3d0c535f1163aecb9af7b8d289d155800dc364eecd189
SHA1 hash: 579eded7746f2a7d699c723c2b290c2c55d688eb
MD5 hash: 69efd2080a9d62fddcaaf1b76e123c11
humanhash: undress-purple-skylark-earth
File name:lov.exe.vir
Download: download sample
Signature Formbook
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File size:47'104 bytes
First seen:2022-06-21 10:20:12 UTC
Last seen:2022-06-21 10:49:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 768:MD89ON+tnOpdh9HeWCuk5w79Nf7oSFYwQjXvLWRgcL0ST8iNxy2s:MD89OBBe/J5gf97QWRgcL9HNxvs
TLSH T11D23AF0BE66CCA60C6E49F7EC9D3D60007B0E4D66C16D75F71492F422E1BBA9C94172E
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b28ccaacda53d39b (34 x Formbook, 1 x BitRAT, 1 x SnakeKeylogger)
Reporter KdssSupport
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
207
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/281904/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.11218.14694.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b19b70dbe9c7c949747058/reports/322ef8d7-acd3-42d5-9cd8-1f3523c4bee0/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/63c458b3-58d0-452d-afa9-2ed855589f2b
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1016984
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 649476 Sample: lov.exe.vir Startdate: 21/06/2022 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 6 other signatures 2->48 10 lov.exe.exe 15 7 2->10         started        process3 dnsIp4 40 gen-l.tk 192.185.174.180, 49765, 80 UNIFIEDLAYER-AS-1US United States 10->40 34 C:\Users\user\AppData\Roaming\...\Kzdycri.exe, PE32 10->34 dropped 36 C:\Users\user\...\Kzdycri.exe:Zone.Identifier, ASCII 10->36 dropped 38 C:\Users\user\AppData\...\lov.exe.exe.log, ASCII 10->38 dropped 54 Creates an undocumented autostart registry key 10->54 56 Writes to foreign memory regions 10->56 58 Injects a PE file into a foreign processes 10->58 15 MSBuild.exe 10->15         started        18 cmd.exe 1 10->18         started        file5 signatures6 process7 signatures8 60 Modifies the context of a thread in another process (thread injection) 15->60 62 Maps a DLL or memory area into another process 15->62 64 Sample uses process hollowing technique 15->64 66 2 other signatures 15->66 20 explorer.exe 15->20 injected 23 conhost.exe 18->23         started        25 timeout.exe 1 18->25         started        process9 signatures10 50 Uses netsh to modify the Windows network and firewall settings 20->50 27 netsh.exe 20->27         started        process11 signatures12 52 Tries to detect virtualization through RDTSC time measurements 27->52 30 cmd.exe 1 27->30         started        process13 process14 32 conhost.exe 30->32         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2f43a94ed8cdf1891e4f45eedfc41247781fca19cd5047a4a95389626789e129/
Threat name:
ByteCode-MSIL.Downloader.Seraph
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Status:
Malicious
First seen:
2022-06-21 10:21:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
14 of 26 (53.85%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=f5b2stwyzxyyshspixxn7rasi54b7sqzzviepjfjkoewez4j4euq._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:rx29 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220621-mdm2rschfm/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
2f43a94ed8cdf1891e4f45eedfc41247781fca19cd5047a4a95389626789e129
MD5 hash:
69efd2080a9d62fddcaaf1b76e123c11
SHA1 hash:
579eded7746f2a7d699c723c2b290c2c55d688eb
Link:
https://www.unpac.me/results/624616cb-1e1c-42e2-92af-5a4dd910b563/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2f43a94ed8cd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/2f43a94ed8cdf1891e4f45eedfc41247781fca19cd5047a4a95389626789e129

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
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Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:malware_Formbook_strings
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Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_stackstrings
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Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Web download

Formbook

Executable exe 2f43a94ed8cdf1891e4f45eedfc41247781fca19cd5047a4a95389626789e129

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2246321/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/281904/

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