MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654. 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
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SHA256 hash: 31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654
SHA3-384 hash: 3b4784f9d7be800476a93573d63674ff3d68afa23a76580e05ba5601cce31a624dda26a6f51534a8d414ac7722295466
SHA1 hash: 8d2a9daa0caf5fad0159ed2233d56bf94b8e7337
MD5 hash: d87832e3f675ffd9d871f455ffa55ff1
humanhash: nineteen-lemon-football-romeo
File name:PO.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:928'256 bytes
First seen:2022-03-08 10:35:22 UTC
Last seen:2022-03-09 10:16:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:frxLkm6StDqmS8LIm1FEud5x1QG1oyvcrhT0t2mSSf:VNIpoT1ftH
Threatray 13'607 similar samples on MalwareBazaar
TLSH T15415AE24BAA5203FE06B8D760BC4AC2349D3B4760606E2AF6C1EC65D4FDA67DCD91C71
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
6
# of downloads :
208
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/248167/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.30349.18452.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Launching a process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
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/96d88041-8f07-4ba8-a4c1-f015f9053ba8
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/952431
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
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
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 584912 Sample: PO.exe Startdate: 08/03/2022 Architecture: WINDOWS Score: 100 31 www.surveycourses.com 2->31 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 9 other signatures 2->45 11 PO.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\PO.exe.log, ASCII 11->29 dropped 55 Writes to foreign memory regions 11->55 57 Allocates memory in foreign processes 11->57 59 Injects a PE file into a foreign processes 11->59 15 RegSvcs.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 2 other signatures 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 worldhealthnutrition.com 15.197.142.173, 49814, 80 TANDEMUS United States 18->33 35 www.jaysingpurchessacademy.com 188.114.97.7, 49805, 80 CLOUDFLARENETUS European Union 18->35 37 www.worldhealthnutrition.com 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 help.exe 18->22         started        signatures11 process12 signatures13 49 Modifies the context of a thread in another process (thread injection) 22->49 51 Maps a DLL or memory area into another process 22->51 53 Tries to detect virtualization through RDTSC time measurements 22->53 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/31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-08 10:36:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gh2euvmhhs4ekbvbee2gtygiqtvx7c2n5kirs67n7cujfqkaizka._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
28c28db28e96276f72ce38a60d04f0711388d3f93ecb34d4721dc94fc2bf9f07
Formbook
2b8c162f4a3747097fcda26d4301f809b515a77f1644bfdb636b39fe263694ee
Formbook
4e1397fff753fe86be50e152d3e2ace6a8a9e0b3f8e63e77c0e0c1c1d6ed71c3
Formbook
545d130d10ca2961ab5d1f3072049cea68154c9ed04d6b7fa408f7c81be10c2a
Formbook
982e727a53a27d2bfbaea608209b315bc892947a1ef954033f1b29c687b6e001
Formbook
afdf1b728a94beb99d17537a9caa1cad644b86725578ac3fb350cf30c9441e7b
Formbook
d3fae1feacb2e75560f838099213ae33385d6a0a11caa222a4f09024721e2720
Formbook
dadfe6c54e7000472e145b38e7410fbfef963566a06811ede626705a9e98a53e
Formbook
e745791e3faad64dc3c475e87b458ac60853d5ca429a32b812c6bacbc841ef99
Formbook
+ 13'597 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:yrcy loader rat suricata
Link:
https://tria.ge/reports/220308-mm98nagedq/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
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/359960da-0804-49d7-9d75-ef61f9e3fdcb/
Parent samples :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 hash:
50f2dec1992ea4f75eacff7e6d0bdd4da0ab6b00d2316c13c092e45a53b9016a
MD5 hash:
32456daf293f780683915ebcf93fae74
SHA1 hash:
e91601275d850c27a41567d1fb7c7e2a3c010c0d
Link:
https://www.unpac.me/results/359960da-0804-49d7-9d75-ef61f9e3fdcb/
SH256 hash:
175285bfa8a73b3990f54994b8825c1f3396635bc344939cd8d9fc60b9569b46
MD5 hash:
f26eb90c6addfc99fa0c2e63896216d2
SHA1 hash:
77e01b96d8c211d4d24fc0a1aae91122caf5f668
Link:
https://www.unpac.me/results/359960da-0804-49d7-9d75-ef61f9e3fdcb/
SH256 hash:
14edc9f50d1e56c9e55ad5c65fd2207034cf2aa2eb7af5cb81291b8c6e0da935
MD5 hash:
c06e8475e1c70c1db9d3b2fe6d24bc21
SHA1 hash:
1e19ee480c51e7279e6db06fa79dbd1b27229324
Link:
https://www.unpac.me/results/359960da-0804-49d7-9d75-ef61f9e3fdcb/
SH256 hash:
31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654
MD5 hash:
d87832e3f675ffd9d871f455ffa55ff1
SHA1 hash:
8d2a9daa0caf5fad0159ed2233d56bf94b8e7337
Link:
https://www.unpac.me/results/359960da-0804-49d7-9d75-ef61f9e3fdcb/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/31f44a55873c/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/31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654

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 31f44a55873cb84506a1213469e0c884eb7f8b4dea91197bedf8a892c1404654

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/248167/

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