MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a958a0beb0a6106e0451e2acbe0e99ae591c77b67ced8ec7e2a09c378e8fedd. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
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SHA256 hash: 8a958a0beb0a6106e0451e2acbe0e99ae591c77b67ced8ec7e2a09c378e8fedd
SHA3-384 hash: 8209d7476046646c9b829c849d834113793e3c153a17da376a112e99e815f31fda4d740e442636f0cd73a3b65e6a411c
SHA1 hash: 90dde66eb71ff90e6850c51d94f11a9e9ca69e77
MD5 hash: 785bd8d280c4bb4cfd05906a1e965ba1
humanhash: blue-sixteen-golf-crazy
File name:785bd8d280c4bb4cfd05906a1e965ba1.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'119'232 bytes
First seen:2021-10-28 15:55:11 UTC
Last seen:2021-10-28 17:14:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:h7Wxh2O7rIndgT5FgA7gEGdCXrmKsr3S5NTA7CJNmOddPbFDGGHA+zo7t/1YdyC:0h7h5FgyjGdaSC5dAMwOddPBDxHfAb
Threatray 9'512 similar samples on MalwareBazaar
TLSH T15D35F86AB398BF57D11E5F39842F2D0E83F1C02332B1F69B2DD869D02645F854A5B0B6
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
199
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/200990/
Detection(s):
SecuriteInfo.com.Variant.Cerbu.118808.30707.2887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Launching a service
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
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:
Malicious
Link:
https://analyze.intezer.com/analyses/07cdc170-2c6d-487b-a6d2-9c54fd15d936
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/878744
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 511177 Sample: jmznK0byd9.exe Startdate: 28/10/2021 Architecture: WINDOWS Score: 100 34 www.portavella.net 2->34 36 portavella.net 2->36 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Found malware configuration 2->56 58 Malicious sample detected (through community Yara rule) 2->58 60 4 other signatures 2->60 11 jmznK0byd9.exe 15 4 2->11         started        signatures3 process4 dnsIp5 44 www.google.com 216.58.215.228, 443, 49744 GOOGLEUS United States 11->44 30 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 11->30 dropped 32 C:\Users\user\AppData\...\jmznK0byd9.exe.log, ASCII 11->32 dropped 72 Writes to foreign memory regions 11->72 74 Allocates memory in foreign processes 11->74 76 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->76 78 Injects a PE file into a foreign processes 11->78 16 AddInProcess32.exe 11->16         started        file6 signatures7 process8 signatures9 46 Modifies the context of a thread in another process (thread injection) 16->46 48 Maps a DLL or memory area into another process 16->48 50 Sample uses process hollowing technique 16->50 52 2 other signatures 16->52 19 explorer.exe 16->19 injected process10 dnsIp11 38 www.zylyt.com 168.206.184.90, 49796, 80 CLAYERLIMITED-AS-APClayerLimitedHK South Africa 19->38 40 www.heidiscuss.xyz 19->40 42 2 other IPs or domains 19->42 62 System process connects to network (likely due to code injection or exploit) 19->62 64 Performs DNS queries to domains with low reputation 19->64 23 msdt.exe 19->23         started        signatures12 process13 signatures14 66 Modifies the context of a thread in another process (thread injection) 23->66 68 Maps a DLL or memory area into another process 23->68 70 Tries to detect virtualization through RDTSC time measurements 23->70 26 cmd.exe 1 23->26         started        process15 process16 28 conhost.exe 26->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8a958a0beb0a6106e0451e2acbe0e99ae591c77b67ced8ec7e2a09c378e8fedd/
Threat name:
ByteCode-MSIL.Trojan.Cerbu
Create hunting rule
Status:
Malicious
First seen:
2021-10-28 11:23:37 UTC
AV detection:
14 of 45 (31.11%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
79043f2f23a008c67568fd1720f10911cfba7ba8008bd214599c6db49aa39791
Formbook
85eb901d5863c16a7526addfb18464967c45348aec3e1d1bf6014958fa4aff8f
Formbook
a5731442f5716f83eca02e956d6ec3c42aca7eda54eea7643cf18f95d6817546
Formbook
b4cda9347ee3f82070ad56ddf27de7f9cc178e086ea60d8367be56e5fb6b0731
Formbook
bcf09c801e101acbaa20ef272f86c7eac2c311bf20c6a5b6e245fc0b92be576e
Formbook
d1a1c263b4343b91e2d8dc0ac2bda68cb43490b98cd59afa6dcc7128dcbb4d0b
Formbook
e876c1db90717ff0819f4fc578adace61decdad64963836ebc9ae983dc87a5d6
Formbook
+ 9'502 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:upi8 agilenet loader rat
Link:
https://tria.ge/reports/211028-tdcpcsbhb5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
Obfuscated with Agile.Net obfuscator
Executes dropped EXE
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.dfwbcs.com/upi8/
Unpacked files
SH256 hash:
8a958a0beb0a6106e0451e2acbe0e99ae591c77b67ced8ec7e2a09c378e8fedd
MD5 hash:
785bd8d280c4bb4cfd05906a1e965ba1
SHA1 hash:
90dde66eb71ff90e6850c51d94f11a9e9ca69e77
Link:
https://www.unpac.me/results/641aa067-2cac-474e-99f9-45935ca956b7/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8a958a0beb0a/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/8a958a0beb0a6106e0451e2acbe0e99ae591c77b67ced8ec7e2a09c378e8fedd

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.

Web download

Formbook

Executable exe 8a958a0beb0a6106e0451e2acbe0e99ae591c77b67ced8ec7e2a09c378e8fedd

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1715158/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/200990/

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