MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
SHA3-384 hash: 6cf716b180f7e6c5a760fb89350f8bdcd5efac2e3a3ca534d6cef65ee246993c910a93a8001636f1a6f569d1d414cdea
SHA1 hash: 29189325967d4716883edabb4c03a5a30d836896
MD5 hash: 692c22c9579ce47100a87e90f911b202
humanhash: glucose-moon-ohio-bravo
File name:arrival notice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:677'376 bytes
First seen:2021-09-15 07:17:11 UTC
Last seen:2021-09-15 13:55:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:C/WHCM2K4CiI/yzQs2TaIpIFVEclUDbZ9mbHxbUVO/vCI:Ct3C3MIpIFVEj/cHxbUV8qI
Threatray 9'252 similar samples on MalwareBazaar
TLSH T137E4D0382AF99029F177AF79AAD4658597BEFE237A03D11E004037864A73741CD9263F
dhash icon 71f0f0f0eccccc71 (10 x AgentTesla, 6 x Formbook, 6 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
6
# of downloads :
238
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
arrival notice.exe
Verdict:
Malicious activity
Analysis date:
2021-09-15 07:19:03 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/d5cc8fa9-f80b-4784-b04b-ba32865b9765

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/188022/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn34.21766.3278.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/617515c99a5a1e91c5d20287/reports/f97d878f-faaf-43db-8e75-d67d91838538/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/55a4888f-72b9-4bd0-9431-e4572171a83b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/851143
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 483574 Sample: arrival notice.exe Startdate: 15/09/2021 Architecture: WINDOWS Score: 100 34 www.ifbrick.com 2->34 36 www.aboutacoffee.com 2->36 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 8 other signatures 2->46 11 arrival notice.exe 3 2->11         started        signatures3 process4 signatures5 56 Injects a PE file into a foreign processes 11->56 14 arrival notice.exe 11->14         started        process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 28 www.beerenhunger.info 217.160.0.150, 49819, 80 ONEANDONE-ASBrauerstrasse48DE Germany 17->28 30 ilovecoventry.com 184.168.131.241, 49814, 80 AS-26496-GO-DADDY-COM-LLCUS United States 17->30 32 5 other IPs or domains 17->32 38 System process connects to network (likely due to code injection or exploit) 17->38 21 colorcpl.exe 17->21         started        signatures10 process11 signatures12 48 Self deletion via cmd delete 21->48 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeylogger
Create hunting rule
Status:
Malicious
First seen:
2021-09-15 07:18:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
30
AV detection:
10 of 45 (22.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h44dy2bxsxjhouiob62mqbvoc673gpow76dvwzwbledi4wgcrama._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1ba55b6d19b202f0a3fa11a7122a210ed0041074bf30fc754bbc87c1a793304b
Formbook
23cc105fad71d71dced93e63fdbab55354b4dc9700fb0de855acedaf5723ed9c
Formbook
5e5f76b60e8eb895e5af44be8ce40f88b77a44840851f761e6818da652ae5cac
Formbook
660b2eb5749963f118e49c2f7f3b253b1563a9f99063ba29122f2b6bb72cb6fc
Formbook
6838e750e4d6b197819aedaeb8e0a183d5fb790da0d6d5e426d99f09bae758d9
Formbook
7e9997ea452090062e0512decd987ccd4ad16cc04d8bea777a4c8929b5ba85aa
Formbook
87fb0ca5b0ebcc0dc80aeca8065b2e2bf1ec14cade124316227646bc59ad237c
Formbook
b8ae452aae57b904e1058a00c0a22dc8c9fa86e5b042d7fe5c812f724b7531a6
Formbook
cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd
Formbook
e1fee7ee20f6d3bd6e913baeae737c558014454223d552c125c3f963e7c1a843
Formbook
+ 9'242 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:n58i loader rat suricata
Link:
https://tria.ge/reports/210915-h4yhzadbbq/
Behaviour
Modifies registry class
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
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.nordicbatterybelt.net/n58i/
Unpacked files
SH256 hash:
6c13cdc5d4408ccd7c0c31a6565a6e1458db6b967b1b4c604aa08a0c82d4ecb1
MD5 hash:
d9260295cce263a3073f916ebca034ae
SHA1 hash:
7cecebd83e8243080168ac5e6e784780a2b9e1c1
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/7bed4ca9-7a39-4a99-949b-5b892ef09630/
Parent samples :
cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd
3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
4b9ec9143ae2471c8cf540f5e3815c4ca4bb5e073d5c45e6bd934cc0350e8546
13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31
b092672d7f36d3deaab664c0a562b055f9cee3f247328e639aca58f025f979ca
SH256 hash:
0895a6b16e9ff2ec723c805a913cbf7c9c73501a6506d134ff7b91f37b0826db
MD5 hash:
042696fc8607c65bd73b14913b97397f
SHA1 hash:
f37578fe32dcb8c771d63400415df377aeaa01f2
Link:
https://www.unpac.me/results/7bed4ca9-7a39-4a99-949b-5b892ef09630/
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
Link:
https://www.unpac.me/results/7bed4ca9-7a39-4a99-949b-5b892ef09630/
SH256 hash:
3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
MD5 hash:
692c22c9579ce47100a87e90f911b202
SHA1 hash:
29189325967d4716883edabb4c03a5a30d836896
Link:
https://www.unpac.me/results/7bed4ca9-7a39-4a99-949b-5b892ef09630/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3f383c683795/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818

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
Create hunting rule
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 3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/188022/

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