MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f3f5241a8c1bbeb66db71d0836e576ae397e001b80975c4d45514a40388a12e. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8f3f5241a8c1bbeb66db71d0836e576ae397e001b80975c4d45514a40388a12e
SHA3-384 hash: 7f0d3ca8975f6e2fc658bd8531117452a08ae264a09e1875a90e18432b84f6bad4c14f5e86033eed3fe6ba7ff9eee409
SHA1 hash: 73ee67a22cf4ec46256f18b9488a8f8485dcfa69
MD5 hash: cd046f8dddb14335d33f37f2ce229f6d
humanhash: nevada-social-muppet-double
File name:Remittance.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:889'344 bytes
First seen:2022-02-14 04:22:42 UTC
Last seen:2022-02-14 14:00:35 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 24576:XkS3rnBLZCEw21MkmMFyoWKV1XatIYpI0J7cYQ5:brnBt5MkJyxKV1QIYdJ7cYA
Threatray 9'263 similar samples on MalwareBazaar
TLSH T18D151204B7B2DA16C5760BB6E8A141416B30ED2E9243D7BF70AC398D3FE73694932536
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
5
# of downloads :
215
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Remittance.exe
Verdict:
Suspicious activity
Analysis date:
2022-02-14 05:29:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/6c6f21da-3e49-4adb-81a5-9d0fef3200f8

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/241234/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.8453.30198.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Searching for the window
Сreating synchronization primitives
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Gathering data
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/a8010362-bd74-4f6c-8e9f-a63bc240ef28
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/939087
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
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
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 571565 Sample: Remittance.exe Startdate: 14/02/2022 Architecture: WINDOWS Score: 100 31 www.tantrungcompany.com 2->31 33 parkingpage.namecheap.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 7 other signatures 2->47 11 Remittance.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\Remittance.exe.log, ASCII 11->29 dropped 61 Writes to foreign memory regions 11->61 63 Allocates memory in foreign processes 11->63 65 Injects a PE file into a foreign processes 11->65 15 RegSvcs.exe 11->15         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Maps a DLL or memory area into another process 15->69 71 Sample uses process hollowing technique 15->71 73 2 other signatures 15->73 18 explorer.exe 15->18 injected process9 dnsIp10 35 ruleship.com 192.185.16.46, 49814, 80 UNIFIEDLAYER-AS-1US United States 18->35 37 tollesonhouses.com 15.197.142.173, 49816, 80 TANDEMUS United States 18->37 39 18 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 51 Performs DNS queries to domains with low reputation 18->51 53 Uses ipconfig to lookup or modify the Windows network settings 18->53 22 ipconfig.exe 18->22         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8f3f5241a8c1bbeb66db71d0836e576ae397e001b80975c4d45514a40388a12e/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-14 04:23:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
23 of 27 (85.19%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r47veqniyg56wzw3ohiig3sxnlrzpyabxaexlrgukukkia4iuexa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
31168981af16e0fc209774a91e04e5aaf622cacbed12e970b7a35db0705174d6
Formbook
5de06778dd414ee2cc418f089914bb7a656ccf854a30a004d286599cda4c4013
Formbook
6893bbff4695dce3754071670e11d7e7d310ad196b57cdb41cd8c3cd7ea3d8f3
Formbook
7357d3e9a33b53dcaf335fecb11100acf0fbeeec2ebf668634de7cd1ba931ae1
Formbook
7cbd8cc35b03d65491ad01b6a44b84dc047e6663189554201c24dbfbeb81473c
Formbook
d2cc3484cdabe8305bf9afd35530ca1118ca2c308408dc7140c3a94b392b60bb
Formbook
e8e0f125d909bafae93f469222f2cfbcb30585e03825d8442c8934a92fdd6c89
Formbook
f61f02c5be2ef5988f474ffc148b099942ab8582cd4aac8b3c991436f6230592
Formbook
fa4fe52b60d9da8ae735fe5ff04114abd194754fcd4ca94c0558ca7f6a3b3945
Formbook
ff3f7736a06e89ae300270369d83b922423c8a840903b30a8a21365c4b0b0628
Formbook
+ 9'253 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  4/10
Tags:
n/a
Link:
https://tria.ge/reports/220214-ezs6xagdcq/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious use of AdjustPrivilegeToken
Drops file in Windows directory
Unpacked files
SH256 hash:
c65a6af5fa8719686bd9fb55055ee825ec87b5e4adf7e58baa5676b45600ea7e
MD5 hash:
152b5fcf2580b07523200858789d1abc
SHA1 hash:
db90e619c454ed44bc97bd0e057d572e82c67cf7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/5a1d8a24-89f0-4ede-9447-9a9b3a655cdf/
Parent samples :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 hash:
3ca74eb4ce4c2c5604dc298949ae47996d93063abfde0682d689205561d17d44
MD5 hash:
4e35b541f3d9162d0ac93d336df67779
SHA1 hash:
bb9e65761186806d4bada659e9d5db0c070501d4
Link:
https://www.unpac.me/results/5a1d8a24-89f0-4ede-9447-9a9b3a655cdf/
SH256 hash:
49e696133af439e2fd4a652d6caf2dff17ea9fccf7e027455ff32e9603548ff2
MD5 hash:
8a391b220bced928734deb76a36367b5
SHA1 hash:
a6a8879665b05a6d737c68d8a2cf5429cb67c16e
Link:
https://www.unpac.me/results/5a1d8a24-89f0-4ede-9447-9a9b3a655cdf/
SH256 hash:
5d4b5ceba5d33739a23f344bba9c5354e48d1c96da3f2fc12e2f5aa176817140
MD5 hash:
c3a2f96e636965e0299a1c8ece2c157f
SHA1 hash:
9eab980df8b2275f280ade106bbb5912036f1bfc
Link:
https://www.unpac.me/results/5a1d8a24-89f0-4ede-9447-9a9b3a655cdf/
SH256 hash:
8f3f5241a8c1bbeb66db71d0836e576ae397e001b80975c4d45514a40388a12e
MD5 hash:
cd046f8dddb14335d33f37f2ce229f6d
SHA1 hash:
73ee67a22cf4ec46256f18b9488a8f8485dcfa69
Link:
https://www.unpac.me/results/5a1d8a24-89f0-4ede-9447-9a9b3a655cdf/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8f3f5241a8c1/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8f3f5241a8c1bbeb66db71d0836e576ae397e001b80975c4d45514a40388a12e

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 8f3f5241a8c1bbeb66db71d0836e576ae397e001b80975c4d45514a40388a12e

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/241234/

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