MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6ca9c2cfe348caed404d0718fc0d6cb89ff38c5851663077fc69e64944424cf. 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 3 File information Comments
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SHA256 hash: b6ca9c2cfe348caed404d0718fc0d6cb89ff38c5851663077fc69e64944424cf
SHA3-384 hash: 3da83d1d4d80cf43b55cf82ad6f88d9a9c3902afc9c9b2dc6790add9e958af4ec2f6010348a9341220f7d67bf4257394
SHA1 hash: 1488bf6d253a64691d66346ddce7befe7d54421c
MD5 hash: 8e2e7299f1997f478e59622e87a1e9a8
humanhash: ceiling-cat-london-leopard
File name:Purchase Order.exe
Download: download sample
Signature Formbook
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File size:1'003'520 bytes
First seen:2021-11-08 04:29:59 UTC
Last seen:2021-11-08 07:13:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:KoNfB+2kKM7pwSw+Z7h5BhvnYjp5wylGP:KoNfI2kKwl
TLSH T1F0255B05AAD44D18C77E0370593AD17CDA525E7B663CC21CBECE3AAB3B7BA508113627
File icon (PE):PE icon
dhash icon d4d4dad6d6dcc4e4 (34 x AgentTesla, 8 x Formbook, 7 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
101
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/203134/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.18852.22557.6169.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6188a7ce2084b424af0f045e/reports/07428e9f-c053-481f-947c-ecffaef05331/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/3a1bd1c1-ee0d-44a5-a927-dd744e581ec1
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/884964
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 517422 Sample: Purchase Order.exe Startdate: 08/11/2021 Architecture: WINDOWS Score: 100 32 Multi AV Scanner detection for domain / URL 2->32 34 Found malware configuration 2->34 36 Malicious sample detected (through community Yara rule) 2->36 38 9 other signatures 2->38 9 Purchase Order.exe 3 2->9         started        process3 file4 26 C:\Users\user\...\Purchase Order.exe.log, ASCII 9->26 dropped 12 Purchase Order.exe 9->12         started        15 Purchase Order.exe 9->15         started        process5 signatures6 40 Modifies the context of a thread in another process (thread injection) 12->40 42 Maps a DLL or memory area into another process 12->42 44 Sample uses process hollowing technique 12->44 46 Queues an APC in another process (thread injection) 12->46 17 NETSTAT.EXE 12->17         started        20 explorer.exe 12->20 injected process7 signatures8 28 Self deletion via cmd delete 17->28 30 Tries to detect virtualization through RDTSC time measurements 17->30 22 cmd.exe 1 17->22         started        process9 process10 24 conhost.exe 22->24         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/b6ca9c2cfe348caed404d0718fc0d6cb89ff38c5851663077fc69e64944424cf/
Threat name:
ByteCode-MSIL.Trojan.Swotter
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Status:
Malicious
First seen:
2021-11-08 03:48:30 UTC
AV detection:
11 of 40 (27.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w3fjylh6gsgk5vae2byy7qgwzoe76ogfqulggb37y2pgjfceethq._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:r4gk rat spyware stealer trojan
Link:
https://tria.ge/reports/211108-e4tm8sbcd6/
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
Malware Config
C2 Extraction:
http://www.aprilsaak.quest/r4gk/
Unpacked files
SH256 hash:
c61f6a0fd94660d9cc012788f67e089482e2b9743b00fa2c19dca96abfe833f6
MD5 hash:
8bb6b6d0be4eba9ea6eac2d16dc37860
SHA1 hash:
34e95e9a52e8252c6ef2d2d174834673afc3d0f7
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/931b7995-59b5-4eaa-aa27-4212bb2e53ff/
Parent samples :
e827c29f504045d8e6d8a2eb622a571f83e1bf9afaa8f1b839af76f457b45135
fc9165f2702032e355b392fe6ada38cfd6e1eceafb5453de7991369addd266a6
fcb7e25d33700d8f04ab05d2fc0cba77dc5ccf6a32b93abc3511dcfb608dbc9e
7ba579db4b2485e75dbeff653199f592e4067706225975038ad011b73562c3fb
1910bc92f591b3feb607aac1518fe2cc6c834b627b76637cb27464006e072a22
6e8be6a1ec2b4c1ec33860b33f09b0e239db6d5453a5713a2aa31e822a8b50b2
9611957db07f36a13d7e43f5c32c08c0e3c44c689e7d88c832490e3d259cfb48
93570be59d8c3f3608ffe0b137503c6555e6f40514af2c22989fe61a2394ecd5
b6ca9c2cfe348caed404d0718fc0d6cb89ff38c5851663077fc69e64944424cf
faf70cbc3094ec594a823dd4516fa6cc662e908b36bdec13c61a7b10c85072fa
ac021bbe155b54ac93bd5ca40b6ca6130174d6d192c6fd2011e9677d56c09f4d
SH256 hash:
91655863c7906a8d20c7c782144f553c027843a72f2fdab2b1ccc80808083af0
MD5 hash:
b5044dd0e9c91b1a9185d491da7d07f2
SHA1 hash:
a9ff8129771d85f77b6a145f750c70e53f51125e
Link:
https://www.unpac.me/results/931b7995-59b5-4eaa-aa27-4212bb2e53ff/
SH256 hash:
907baf1d88cde6b701cefde5c229af7985370ce157da126372843eefb2768032
MD5 hash:
333cde3357ed13cdd1b45a17351703d2
SHA1 hash:
1012f040e615988645552e5bafa834bf211c19e5
Link:
https://www.unpac.me/results/931b7995-59b5-4eaa-aa27-4212bb2e53ff/
SH256 hash:
b6ca9c2cfe348caed404d0718fc0d6cb89ff38c5851663077fc69e64944424cf
MD5 hash:
8e2e7299f1997f478e59622e87a1e9a8
SHA1 hash:
1488bf6d253a64691d66346ddce7befe7d54421c
Link:
https://www.unpac.me/results/931b7995-59b5-4eaa-aa27-4212bb2e53ff/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b6ca9c2cfe34/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.95
Link:
https://yomi.yoroi.company/submissions/b6ca9c2cfe348caed404d0718fc0d6cb89ff38c5851663077fc69e64944424cf

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: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 b6ca9c2cfe348caed404d0718fc0d6cb89ff38c5851663077fc69e64944424cf

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/203134/

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