MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5ff6c0e2357f1fed6377b327e44824d4f83fe8303427a89cdf310d2cf4cbac5. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f5ff6c0e2357f1fed6377b327e44824d4f83fe8303427a89cdf310d2cf4cbac5
SHA3-384 hash: 41a14baeec33fd2a6f3ce67d26ebfeea695a95f776728c0b06665dde82b9f2cdeb4ccd68eeac724bcd5737d891a45a4b
SHA1 hash: 2a9d0c025f00e299b036d69c13839904dcac1fcb
MD5 hash: 3909cdcad285c4dc44f1cb02cc9bdf7f
humanhash: beer-high-alaska-ack
File name:Keryer Group Company Ltd-pdf-.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:677'888 bytes
First seen:2022-11-21 11:21:24 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:ghvkroHKtqVm0LZTZBxoLNJM81sqU87PIx5Kvymg//U/5s5BpcjZnbCkI:ScMHK41QLNJ8qU7MgU/5tjZnbCkI
Threatray 18'856 similar samples on MalwareBazaar
TLSH T108E439E97893796EE5B9B25D55F1A840CBB388724EC0AE2441683DC15D339D3B062EFC
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
223
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Keryer Group Company Ltd-pdf-.exe
Verdict:
Malicious activity
Analysis date:
2022-11-21 11:24:08 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/c1d0703a-857a-45da-818e-b640d9e20972

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/336714/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1617.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
hacktool packed
Link:
https://www.filescan.io/uploads/637b5f632609334c72c198d2/reports/c2680305-ed53-4e3f-836c-9f96bd6a1fc7/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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fc5d564b-5d04-4a97-853f-fed314083444
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1118039
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 750752 Sample: Keryer Group Company Ltd-pdf-.exe Startdate: 21/11/2022 Architecture: WINDOWS Score: 100 70 Malicious sample detected (through community Yara rule) 2->70 72 Antivirus detection for URL or domain 2->72 74 Sigma detected: Scheduled temp file as task from temp location 2->74 76 11 other signatures 2->76 10 Keryer Group Company Ltd-pdf-.exe 7 2->10         started        14 tckRkjaGWpJ.exe 5 2->14         started        process3 file4 50 C:\Users\user\AppData\...\tckRkjaGWpJ.exe, PE32 10->50 dropped 52 C:\Users\...\tckRkjaGWpJ.exe:Zone.Identifier, ASCII 10->52 dropped 54 C:\Users\user\AppData\Local\...\tmp9E89.tmp, XML 10->54 dropped 56 C:\...\Keryer Group Company Ltd-pdf-.exe.log, ASCII 10->56 dropped 84 Adds a directory exclusion to Windows Defender 10->84 16 Keryer Group Company Ltd-pdf-.exe 10->16         started        19 powershell.exe 21 10->19         started        21 schtasks.exe 1 10->21         started        86 Multi AV Scanner detection for dropped file 14->86 88 Machine Learning detection for dropped file 14->88 90 Tries to detect virtualization through RDTSC time measurements 14->90 23 tckRkjaGWpJ.exe 14->23         started        25 schtasks.exe 1 14->25         started        27 tckRkjaGWpJ.exe 14->27         started        29 tckRkjaGWpJ.exe 14->29         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 16->60 62 Maps a DLL or memory area into another process 16->62 64 Sample uses process hollowing technique 16->64 66 Queues an APC in another process (thread injection) 16->66 31 explorer.exe 16->31 injected 35 conhost.exe 19->35         started        37 conhost.exe 21->37         started        39 conhost.exe 25->39         started        process8 dnsIp9 58 www.carnivalofmiami.com 23.251.63.227, 49695, 80 VPSQUANUS United States 31->58 68 System process connects to network (likely due to code injection or exploit) 31->68 41 chkdsk.exe 31->41         started        44 svchost.exe 31->44         started        signatures10 process11 signatures12 78 Modifies the context of a thread in another process (thread injection) 41->78 80 Maps a DLL or memory area into another process 41->80 82 Tries to detect virtualization through RDTSC time measurements 41->82 46 cmd.exe 1 41->46         started        process13 process14 48 conhost.exe 46->48         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f5ff6c0e2357f1fed6377b327e44824d4f83fe8303427a89cdf310d2cf4cbac5/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-11-17 11:24:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
27 of 41 (65.85%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6x7wydrdk7y75vrxpmzh4recjvhyh7udanbhvcon6minft2mxlcq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0a945bb9d22fe4330c70ef916aeaf9a375661c758a8ae6e60effbd725b95baf0
Formbook
3a22fb14f837309023971bf41b88cfc9b3ae7d9db44da63257d36d73dbd716ad
Formbook
4408ca4867bf10664da86178ed9d1730f0b405964f6bcd1c5ad87353ac1f5dca
Formbook
476cfcd8e4efbaad00e44089bfe1eab950cd627656f960b74a1dce1f9e5686dc
Formbook
7a16dce8bd82a023e48ceed80a37c70de9859cba4764686bf41b2b14df81ce3a
Formbook
cf241bb419e3f76e1de76514e4c015b2afd1ddcdfa52ae158717e78f7090e014
Formbook
d4ab87e55002c6b6e0aafcf9365ab9017946e998371e43b15a50bae8475b947c
Formbook
e12e92ded58d05cf87a0cdf4323859145f5aa09da69e4dd3ab622e65a9888587
Formbook
f31a05be0e1f0f40940c3e9404d50bf14261735a2dde4574c262f17c48d69836
Formbook
+ 18'846 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a20e rat spyware stealer trojan
Link:
https://tria.ge/reports/221121-ngkw9agc86/
Behaviour
Creates scheduled task(s)
Gathers network information
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
Deletes itself
Formbook payload
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3cce8424-ca1a-4d9d-aff6-c520b1e57bfa
Unpacked files
SH256 hash:
401d37bb542e818ee49038c652fa9d769d216b912fbf638b768d2370cd184854
MD5 hash:
705e49ed906ae2317fb8f126f2ab2f4b
SHA1 hash:
33996978fe870cb59c5bf620bf4c38415ffe1e37
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/15440bed-49a7-4201-ad88-7d68546b894f/
Parent samples :
10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1
0efdd0e8aee22b54cf59895aa7ff5dcf84ccefed62dcdde3fd2ea83c56d28084
9a08fda66d16f86ef516a81de248994dd1559d5ee2a1eda0ff01fc1e201df58e
566b1792d888a840627496095ec7ef8fb969dda1390de7cbb33b91ad3a2005ac
b9fb4c44ec5a153f4f4bfcbfa4af6db9b7fc3355ad87796740bc64c021750729
d89328f47ab6375b8a1ef3bc65d9ba39b71bf7a96178ca0a044d87bf7ced3030
e881e163a74b024a40687dc1c76ac937e42527b0f0441435a021c6cdf35ba709
c5d35a6e446100b36d3421ece29d936dc013fe088f05bcf86e947d1845403485
60e030997c5371909ff1cff1f037b7131c4a21ccc56d0e28cb0a561befc8b0c7
c928ae5145fc7c66015235428dbe804dde69aaf7c4ff0e6230f89c6e4ffff76a
2c93f13378494ff49e5b0d019538efd6c35d3c745bbcf9fe6e28688133d3f76f
9f45c62cca089f9452a56fb22a43bc373514ca2bbe6a6618b179090f5e7fa975
8ced3b47bed5c4a21219e9857f092343bfd2a66c53c18489aa0c0ecab733aebf
7467efea87f019ef06f012f2b8bdd694106b06442fa7f1a9541051cd28cc3f2b
0a945bb9d22fe4330c70ef916aeaf9a375661c758a8ae6e60effbd725b95baf0
f5ff6c0e2357f1fed6377b327e44824d4f83fe8303427a89cdf310d2cf4cbac5
SH256 hash:
e70a304a9e0ae55f896f530391082938f9b5105dff2b9b9ae9ffa52164a8c0aa
MD5 hash:
c76f6fa93f2fd269a78736840fd7f348
SHA1 hash:
6981b70c58739529e2d4bca7284f9066296063b6
Link:
https://www.unpac.me/results/15440bed-49a7-4201-ad88-7d68546b894f/
SH256 hash:
cfc16a2dbb933b1b85807d48966e9301b9fc34f4c44e7357713ca88b54bf4ab4
MD5 hash:
aabd0bdc81026ade6c57383f21d5c227
SHA1 hash:
4b26936bb8c03be6d7963184215a5ab594ecb765
Link:
https://www.unpac.me/results/15440bed-49a7-4201-ad88-7d68546b894f/
SH256 hash:
18ed92af989e9105f8adc6f2a78b38178d6c9bd5a98852367fa40dbb94f06676
MD5 hash:
c96ea2e89c3f736f50234924f8dbf18a
SHA1 hash:
297ffa4915ec5b47909e934fc72ad14cbeb68790
Link:
https://www.unpac.me/results/15440bed-49a7-4201-ad88-7d68546b894f/
SH256 hash:
ab19f28c700d64814b0c55df868c30dfb94e0a1f9fb6f7bca05bac6eb78a4e52
MD5 hash:
1f2a6c02dcf9aa00a28a5039fb5b8ce0
SHA1 hash:
1ef480867d39b98368af7586a8e6ba38c0c3893a
Link:
https://www.unpac.me/results/15440bed-49a7-4201-ad88-7d68546b894f/
SH256 hash:
f5ff6c0e2357f1fed6377b327e44824d4f83fe8303427a89cdf310d2cf4cbac5
MD5 hash:
3909cdcad285c4dc44f1cb02cc9bdf7f
SHA1 hash:
2a9d0c025f00e299b036d69c13839904dcac1fcb
Link:
https://www.unpac.me/results/15440bed-49a7-4201-ad88-7d68546b894f/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f5ff6c0e2357/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/f5ff6c0e2357f1fed6377b327e44824d4f83fe8303427a89cdf310d2cf4cbac5

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: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 f5ff6c0e2357f1fed6377b327e44824d4f83fe8303427a89cdf310d2cf4cbac5

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/336714/

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