MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d
SHA3-384 hash: 62296642b881754063fc2da22a5b16e00d355b1a69349fb693aac3022914af167905d5c874e8787b042279d1e69641e9
SHA1 hash: fe980367996911575dabddbc366ada06e578ef29
MD5 hash: 41e5e23298c8055eba9c60a893fbd748
humanhash: low-fish-london-timing
File name:Dezember Versand.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:649'728 bytes
First seen:2021-11-25 10:41:06 UTC
Last seen:2021-11-25 12:55:22 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 12288:485p0CixBFmg967oSvD/void5DyWO/984zaQRNwKIlyAKp:4Kp0Ci1o7zD/bq984jIlWp
Threatray 12'131 similar samples on MalwareBazaar
TLSH T1BDD4E151307C91C7DABD0EB2689AE23022B8659EF58ED15F32C6B76910F2352421F77E
File icon (PE):PE icon
dhash icon 8084a48cbc8ce4f8 (44 x Formbook, 20 x AveMariaRAT, 11 x SnakeKeylogger)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
122
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Dezember Versand.exe
Verdict:
Malicious activity
Analysis date:
2021-11-25 10:47:35 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/f9d16b6a-f690-4dfc-b5d7-8c31d79ef92d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
SecuriteInfo.com.Variant.Bulz.693401.1274.25287.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
DNS request
Sending a custom TCP request
Launching a process
Creating a file
Reading critical registry keys
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/619f687eb71ceed4152fdc0a/reports/efb8dde1-e4b0-41ff-b35f-82d5bbe6d351/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/6ea84c67-a57a-44d6-a3fa-2abd2866f96f
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/896029
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2021-11-25 10:42:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
35
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hnpddzfwecd57j6kygrzymmjnus5izojoh7b3m7jvetri4ooifwq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0e4457b67ffa5012b613997788d6993355a18568bdc30c4c2e76f8ec9313aa0b
Formbook
570f6cf56c833b755dcf8618a0182d27fd9ac39a0ad4595ea9a774f346970b7b
Formbook
774c08451198a951fa73f9859b5e48c12c5df9214759e4717e56d92fb4c09d1e
Formbook
973489958412d5278a51536aac60517969126519f59677ec9b2917c727ac832a
Formbook
ae55ee08f18b57a38a47ed9bc161b7833e35c31b014e8579ae904a2d4d7c63e3
Formbook
b830b088dcc04db74fc8afbb16dcfff0134c405228be44df5d996a9a5b254bff
Formbook
c8352baa0192f9bdbf7b0d47d76f9b592ba602ea001fdc21e281899eb3209a6c
Formbook
d78094f3b6eac87e2d4249671bdc4e044afb31e2e78aac8f2db7186c6d5b6db1
Formbook
+ 12'121 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:seqa loader rat suricata
Link:
https://tria.ge/reports/211125-mrpgraehdq/
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
Uses the VBS compiler for execution
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.hybridsea.com/seqa/
Unpacked files
SH256 hash:
4445e6169ee2064cac414bb32b65e1685546644926bd081026a4c2ea568339a2
MD5 hash:
49786a0dbb57389e948893b125a90c14
SHA1 hash:
cd393e046e71681bd1cfdddd7ee1db3421cd7057
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/d09e0553-b423-49ab-93a4-8fd8aa25d038/
Parent samples :
639d4b0e8dca5185a1783c06b52360ef09df62cc065d0edfd1702cc6d83a025e
e96c0ffc73eec789eab058d77bed0e9246f485bbfada89dbad4b73430461780f
570f6cf56c833b755dcf8618a0182d27fd9ac39a0ad4595ea9a774f346970b7b
3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d
c0064ec7925f6ba2b202bac90707efb73e2c843ad4c946a12fdf3c49be910fbc
0d191570930382397a371a8f1fb19bd8aa7151e2f48090b11a473d65db5e0cb5
be36f7b67439a45588b41b9c19a15bfde3545ddd5eef1366d2610831260d40fb
SH256 hash:
f6639a3b21a09ca5e9e43e10f8ac7f822956232806805252096f03f68bc9815c
MD5 hash:
aa334e922c53c5cba0b43c342ac13b14
SHA1 hash:
68109327b5e98174293bb348dfea6a088cbd5d2f
Link:
https://www.unpac.me/results/d09e0553-b423-49ab-93a4-8fd8aa25d038/
SH256 hash:
3c6adb8d39a325af5f8a796a8fcc9cff9c0b8a5ec2e8d8b0636cfd724cdb16c7
MD5 hash:
9041f300d0cd755d3c0c7b087bf65bad
SHA1 hash:
676b1766c4676d22b5ee99aeeb7fb2a0f1fd0b74
Link:
https://www.unpac.me/results/d09e0553-b423-49ab-93a4-8fd8aa25d038/
SH256 hash:
3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d
MD5 hash:
41e5e23298c8055eba9c60a893fbd748
SHA1 hash:
fe980367996911575dabddbc366ada06e578ef29
Link:
https://www.unpac.me/results/d09e0553-b423-49ab-93a4-8fd8aa25d038/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.85
Link:
https://yomi.yoroi.company/submissions/3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d

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
Create hunting rule
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 3b5e31e4b62087dfa7cac1a39c31896d25d465c971fe1db3e9a9271471ce416d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/209282/

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