MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 637f702a6f06a32c6b1794df68ccf1e7f29a2aa38b468b296816ba9010606a1a. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
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SHA256 hash: 637f702a6f06a32c6b1794df68ccf1e7f29a2aa38b468b296816ba9010606a1a
SHA3-384 hash: f310dbee54e105ac25eaf4f209db5a5691b869e56b84fc064d18b79aaf9ca2f4879da89bb4fc7657bbef4b33b17c5a5e
SHA1 hash: 69c7e2a686fa6e16143febfe63d6b31b25b3926c
MD5 hash: 21275c78360b8cd93a3d056eac042df9
humanhash: nuts-maryland-missouri-glucose
File name:Documentation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:808'448 bytes
First seen:2022-08-08 09:46:29 UTC
Last seen:2022-08-16 08:59:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:2FxgV10gAykYslt3L0FpLDNYaNuKp3/e9IbUDHDl:UgVWgjo3gOkum3/7U
Threatray 15'513 similar samples on MalwareBazaar
TLSH T16605BE1BEF147708C5A76AB4EE0BBDA667F61C5D3175D0B83A647C0A4AFF301E51202A
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
378
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Documentation.exe
Verdict:
Malicious activity
Analysis date:
2022-08-08 09:49:24 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/32761338-3fc8-4cce-b84c-8cd8f617ae1d

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/297115/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit packed
Link:
https://www.filescan.io/uploads/62f0dc156fb6aea51f1a6b27/reports/a4e88ad6-f27d-4b2b-bbaa-c692b9b8dbac/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5d0b4fa0-cae1-4c0b-b355-0ff1ad2a8c20
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1047829
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Initial sample is a PE file and has a suspicious name
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 680323 Sample: Documentation.exe Startdate: 08/08/2022 Architecture: WINDOWS Score: 100 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected AntiVM3 2->48 50 7 other signatures 2->50 10 Documentation.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\Roaming\UAtlPxrW.exe, PE32 10->36 dropped 38 C:\Users\...\UAtlPxrW.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\Local\...\tmp7721.tmp, XML 10->40 dropped 42 C:\Users\user\...\Documentation.exe.log, ASCII 10->42 dropped 52 Uses schtasks.exe or at.exe to add and modify task schedules 10->52 54 Writes to foreign memory regions 10->54 56 Adds a directory exclusion to Windows Defender 10->56 58 Injects a PE file into a foreign processes 10->58 14 RegSvcs.exe 10->14         started        17 powershell.exe 23 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 2 other signatures 14->72 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 cmd.exe 21->27         started        signatures10 60 Modifies the context of a thread in another process (thread injection) 27->60 62 Maps a DLL or memory area into another process 27->62 64 Tries to detect virtualization through RDTSC time measurements 27->64 30 cmd.exe 1 27->30         started        32 explorer.exe 96 27->32         started        process11 process12 34 conhost.exe 30->34         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/637f702a6f06a32c6b1794df68ccf1e7f29a2aa38b468b296816ba9010606a1a/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-08-08 09:47:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mn7xaktpa2rsy2yxstpwrthr47zjukvdrndiwklic25jaedanina._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
089fdb9024c9f8436e2c2a7e0e8734266fe5d65bcdbaf99fac4a26b0879b29d9
Formbook
22a97bc8516563b8d5d94ae5937f0995a2fa87bc473fa9ad4e3cd512be5d7756
Formbook
3e71d457ca114497a6b54846e2f6d571db0619199c046d4fed20bbc93d50e7bd
Formbook
696ea6f69112d4d80b34a8dc589c16db71217fc6aa75567cb081bd02c56612b2
Formbook
a445c5a7219f02d53032566eeda84c273ff01d6184f476daf78b29fc57603e9a
Formbook
b0b1f27468552599b6e685345007b1fdbea80c2c60a914a01a6e0abdd35fcdf5
Formbook
b3f0437b2d889647d5ea1a468eff45586ff3932afd4131f235e0ce7cd5864a1e
Formbook
c0f665918f4ea75327960ddf58cf37e415a6bf6569a4c22aa6291fbac9d171ce
Formbook
ea4ca77890daba701679e692e4ad121c665c5089082450e00eb921976dffbe04
Formbook
+ 15'503 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:d1s6 rat spyware stealer trojan
Link:
https://tria.ge/reports/220808-lr7snaghfr/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
f07515f681b7b0e082d891c18c95462991eabbd75ecde54c212dd35d190d7a84
MD5 hash:
4fae6cb9dfa41f07494f3c7b1d3aa430
SHA1 hash:
9c5216c7050196aec5c2eac23375a5aab6b428a7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/ac3d6e85-eb81-4974-bab7-0b8bf8fde319/
Parent samples :
72725c71078cc53ee2aff6812a6fe2a64cfa898bf28f6a818d2a2f0ad84bd46b
4cb742927b299c24ca04c80d3ea10a5e3b4a5aa6508aba92c0e9e5fce2eebab1
637f702a6f06a32c6b1794df68ccf1e7f29a2aa38b468b296816ba9010606a1a
61e02739fb76c2e56860acdbeda1ed43769648fc4e7908c31b7194ff94a3981d
9238603739f090fa4b311ab4c76739c1b54d21e410139c6be208025b4dd7a33f
61c8ca02306264110104d4803a15eacc1949f65dd2b1723f159ed3f93553a384
663a1d5b9cec98717c0c4007942db9627fd88ec897d21f80e6fa0ddce642e22e
bfac76ed38d1b5d2737a76ce7c59f1651040d11c1ec63388364e4cd37cc4fbee
7f247f33a3cfc5c0282c5a8730ff0ec2a37b20983832fe1de65d86eb1114e38d
SH256 hash:
60f90922ccccff10ca51a30a9c5bbf929ebaf6cb697e70f1de9b5753f1974c3d
MD5 hash:
c40ed574daee2532c11083ca337c4687
SHA1 hash:
a95fb6a464c3fe04959b6117deeba41d255e1d8a
Link:
https://www.unpac.me/results/ac3d6e85-eb81-4974-bab7-0b8bf8fde319/
SH256 hash:
642d5b8aa52ca35d8386a5b4302aa503d330753426dd950e6c2a47efdbb4b7e2
MD5 hash:
2e85fdecd9837f0895ee6568f97b3cfd
SHA1 hash:
a4df92cf9adfa1c7d26f6d19923cbfa4cbfc596f
Link:
https://www.unpac.me/results/ac3d6e85-eb81-4974-bab7-0b8bf8fde319/
SH256 hash:
64a0b33a5fa92fce8196ab6953d470cb054b35c6686c1f3241eddabeb07fae9c
MD5 hash:
76ed0b5c7c72205ac9acb29d5007de37
SHA1 hash:
798dde1fbf6315b1619009a71d3567c30fa9f025
Link:
https://www.unpac.me/results/ac3d6e85-eb81-4974-bab7-0b8bf8fde319/
SH256 hash:
9b4aee132a0228378d66a57fda3a2030952309ef74cf2db724ac916b04d8c034
MD5 hash:
93c6391d23c1aa1ed66fb13f82f2ee31
SHA1 hash:
220098c3047c32b51ae13a5cc1e9beeef3da6e18
Link:
https://www.unpac.me/results/ac3d6e85-eb81-4974-bab7-0b8bf8fde319/
SH256 hash:
637f702a6f06a32c6b1794df68ccf1e7f29a2aa38b468b296816ba9010606a1a
MD5 hash:
21275c78360b8cd93a3d056eac042df9
SHA1 hash:
69c7e2a686fa6e16143febfe63d6b31b25b3926c
Link:
https://www.unpac.me/results/ac3d6e85-eb81-4974-bab7-0b8bf8fde319/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/637f702a6f06/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/637f702a6f06a32c6b1794df68ccf1e7f29a2aa38b468b296816ba9010606a1a

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
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.

Malspam

Formbook

Executable exe 637f702a6f06a32c6b1794df68ccf1e7f29a2aa38b468b296816ba9010606a1a

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/297115/

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