MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efb9deb209a6439a40fefb58437182f07751f78ad987c601aa3004d809d53761. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
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SHA256 hash: efb9deb209a6439a40fefb58437182f07751f78ad987c601aa3004d809d53761
SHA3-384 hash: b63c388bbc490c7c452578bf19c80276504cf308ccd94cb752708de9beec63c6a2a5d1b1615ff7d1415dbfafc4354447
SHA1 hash: aedd98fb0eb2af80d569942ca344ca239e6217eb
MD5 hash: 6cf4c4bb6f52b7141ec720541babed4e
humanhash: four-high-seven-social
File name:006062022.exe
Download: download sample
Signature Formbook
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File size:174'080 bytes
First seen:2022-06-06 08:53:51 UTC
Last seen:2022-06-07 07:34:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:ekZJUzxj23ZbG9Ch+qBvSY45w54QKBe6:ezS6Cgw4i+
TLSH T18704D78CBC98851CEEA9EA71191EF573FE297FCABA4C9B54C1403FD639721600A4D834
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 31b0d89692d87031 (6 x AgentTesla, 4 x Formbook, 1 x RedLineStealer)
Reporter cocaman
Tags:exe FormBook payment

Intelligence

File Origin
# of uploads :
3
# of downloads :
285
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
006062022.exe
Verdict:
Malicious activity
Analysis date:
2022-06-06 08:59:01 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/c9e35658-90e9-4fa7-a259-0473289013a1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/276934/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.15352.15886.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/629dc0ae1fdbb8e83144ce6b/reports/d2c3e8dc-760b-4700-9232-b996b6140666/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:
AVEMARIA
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ea833b7f-dade-4e08-86c6-91f758046dc9
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1007192
Signature
.NET source code contains potential unpacker
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Self deletion via cmd or bat file
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 Costura Assembly Loader
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 639686 Sample: 006062022.exe Startdate: 06/06/2022 Architecture: WINDOWS Score: 100 66 Malicious sample detected (through community Yara rule) 2->66 68 Multi AV Scanner detection for submitted file 2->68 70 Yara detected FormBook 2->70 72 7 other signatures 2->72 10 006062022.exe 16 7 2->10         started        15 Aqeuhez.exe 14 4 2->15         started        process3 dnsIp4 58 mickey51.com 43.242.128.230, 49758, 49772, 49773 SONDERCLOUDLIMITED-AS-APSonderCloudLimitedHK Hong Kong 10->58 48 C:\Users\user\AppData\Roaming\...\Aqeuhez.exe, PE32 10->48 dropped 50 C:\Users\user\...\Aqeuhez.exe:Zone.Identifier, ASCII 10->50 dropped 52 C:\Users\user\AppData\...\006062022.exe.log, ASCII 10->52 dropped 76 Tries to detect virtualization through RDTSC time measurements 10->76 78 Injects a PE file into a foreign processes 10->78 17 006062022.exe 10->17         started        20 cmd.exe 1 10->20         started        80 Multi AV Scanner detection for dropped file 15->80 82 Machine Learning detection for dropped file 15->82 22 Aqeuhez.exe 15->22         started        24 cmd.exe 1 15->24         started        26 Aqeuhez.exe 15->26         started        file5 signatures6 process7 signatures8 60 Modifies the context of a thread in another process (thread injection) 17->60 62 Maps a DLL or memory area into another process 17->62 64 Queues an APC in another process (thread injection) 17->64 28 explorer.exe 17->28 injected 30 conhost.exe 20->30         started        32 timeout.exe 1 20->32         started        34 conhost.exe 24->34         started        36 timeout.exe 24->36         started        process9 process10 38 Aqeuhez.exe 3 28->38         started        dnsIp11 54 192.168.2.1 unknown unknown 38->54 56 mickey51.com 38->56 74 Injects a PE file into a foreign processes 38->74 42 cmd.exe 38->42         started        signatures12 process13 process14 44 conhost.exe 42->44         started        46 timeout.exe 42->46         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/efb9deb209a6439a40fefb58437182f07751f78ad987c601aa3004d809d53761/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-06-06 08:49:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=56455mqjuzbzuqh67nmeg4mc6b3vd54k3gd4mankgacnqcovg5qq._file
Verdict:
malicious
Label(s):
formbook
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masslogger
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:fs44 persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220606-ktwmqsbccr/
Behaviour
Delays execution with timeout.exe
Enumerates system info in registry
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
efb9deb209a6439a40fefb58437182f07751f78ad987c601aa3004d809d53761
MD5 hash:
6cf4c4bb6f52b7141ec720541babed4e
SHA1 hash:
aedd98fb0eb2af80d569942ca344ca239e6217eb
Link:
https://www.unpac.me/results/cc16f8eb-4964-4720-a82c-9473ff78c4e1/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/efb9deb209a6/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/efb9deb209a6439a40fefb58437182f07751f78ad987c601aa3004d809d53761

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.

Malspam

Formbook

zip 7762b8f9f5908835fb0d0e95ed44f59ed9ec2034faa352963030b9ac8366600f

Formbook

Executable exe efb9deb209a6439a40fefb58437182f07751f78ad987c601aa3004d809d53761

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 7762b8f9f5908835fb0d0e95ed44f59ed9ec2034faa352963030b9ac8366600f
Cape
Cape
https://www.capesandbox.com/analysis/276934/
  
Dropped by
MD5 6bc0ac224be48ce4da3f31f866e70055

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