MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fde58c8e44d682a5859d2666c413bcc1e70fc85d3e2ebeaa1fa9a524b33e3568. 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: fde58c8e44d682a5859d2666c413bcc1e70fc85d3e2ebeaa1fa9a524b33e3568
SHA3-384 hash: 52a31ab76473a1bc5ed5df124ac5b77226a33b547c8b118f02c4411ca4daa544fc9e32ea2da30310c10034a0edada0be
SHA1 hash: 85cf17881d0811df03198c37e19c3a520bba3da4
MD5 hash: 4fedc673e4a3fbf168c71b0a6e4a8303
humanhash: pip-west-lima-uniform
File name:Invoice31022.pdf.exe
Download: download sample
Signature Formbook
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File size:791'552 bytes
First seen:2022-03-10 16:55:05 UTC
Last seen:2022-03-10 18:36:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'646 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:ox+5fgdXc6RMUbH7aBQNMm4Zi9GD39h7l5sJe9H8pzLkC373wepeY+syg:oxy4VL7aBdnHPsJe9HqXEKeYIg
Threatray 14'848 similar samples on MalwareBazaar
TLSH T17DF4BEF0EE18977EED14723BC0A819700EF5598D3411BF5A928D01DE0A6BECF58E652E
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
252
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/249199/
Detection(s):
SecuriteInfo.com.TrojanSpy.MSIL.NEGASTEAL.SMG.27377.12757.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/622a2da9b94fb38cb453d966/reports/db01d486-f934-407a-a2d7-5259de383e24/overview
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5d84b426-f9a9-449d-b4ad-9c0ca8a1f0e6
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/954399
Signature
.NET source code contains potential unpacker
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspicious Double Extension
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 an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 586880 Sample: Invoice31022.pdf.exe Startdate: 10/03/2022 Architecture: WINDOWS Score: 100 31 www.giainhatvn4052.com 2->31 33 giainhatvn4052.com 2->33 35 www.analytics-as-a-service.agency 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 9 other signatures 2->49 11 Invoice31022.pdf.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\Invoice31022.pdf.exe.log, ASCII 11->29 dropped 61 Tries to detect virtualization through RDTSC time measurements 11->61 63 Injects a PE file into a foreign processes 11->63 15 Invoice31022.pdf.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 18 explorer.exe 15->18 injected process9 dnsIp10 37 alb-pl2-web.int-digi.com 5.101.39.11, 49792, 80 VIARTCOMRU Russian Federation 18->37 39 567889.rest 162.213.255.11, 49789, 80 NAMECHEAP-NETUS United States 18->39 41 8 other IPs or domains 18->41 51 System process connects to network (likely due to code injection or exploit) 18->51 22 mstsc.exe 18->22         started        signatures11 process12 signatures13 53 Self deletion via cmd delete 22->53 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
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Link:
https://mwdb.cert.pl/sample/fde58c8e44d682a5859d2666c413bcc1e70fc85d3e2ebeaa1fa9a524b33e3568/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
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Status:
Malicious
First seen:
2022-03-10 16:55:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
24 of 27 (88.89%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7xsyzdse22bklbm5eztmie54yhtq7sc5hyxl5kq7vgssjmz6gvua._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
00618cf758d2dbbbc3565a8063f22ba6a2b1eaba02e36d62db931bf2e24e14f9
Formbook
28c28db28e96276f72ce38a60d04f0711388d3f93ecb34d4721dc94fc2bf9f07
Formbook
49f94b3fbaf875cb2c223cdee59cfdedf4b2b937fba4a473cf2e4f767b44cb4c
Formbook
6a68426f18f239950d5bb0d82223890b44ea10de5a5fa83294457dd3dcdc5068
Formbook
982e727a53a27d2bfbaea608209b315bc892947a1ef954033f1b29c687b6e001
Formbook
9f033092c39f84850b90bbeb99c2fa53bb621a8467cdf399f77e08bfa892548d
Formbook
e1754d3bb2df3b1c3c8b6448afd0e7e03b65e4d4a9fa331df40acc0acc38a408
Formbook
e745791e3faad64dc3c475e87b458ac60853d5ca429a32b812c6bacbc841ef99
Formbook
ea94995d23d53a98a949a242022cbd9bc5b7a4320c3fb6c045370b15704e4004
Formbook
+ 14'838 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:nhc5 loader rat
Link:
https://tria.ge/reports/220310-ve58qshaf2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
.NET Reactor proctector
Xloader Payload
Xloader
Unpacked files
SH256 hash:
e2f7032b4dbda26a04d80b6fd8c8fcdea33e1e896cf2ff9907243719aec735a4
MD5 hash:
099c068ef856ca386ce5f9d911c5889c
SHA1 hash:
015613723971d5492c2d2819d74ceb5120ac2320
Detections:
win_formbook_g0
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win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/caf39c24-9fbf-4943-a3ff-a45856f72021/
Parent samples :
fde58c8e44d682a5859d2666c413bcc1e70fc85d3e2ebeaa1fa9a524b33e3568
d89f28603b8948dd7217e42366328a6e9bd05d59e5de67a4c39f207f8a520d43
4578377535af1779ce80c47bcfb9bd9375352cf29e29c31b119efba2b466ae2b
SH256 hash:
957f5394a0cea4624c5ffe8ba260846b121e6ecb7adda0ae6247c2c568c56a2d
MD5 hash:
3797bd559b748215648dfdc3008331a2
SHA1 hash:
ee11a7be9a3c352ff6b4d2f1bec952617522ebf9
Link:
https://www.unpac.me/results/caf39c24-9fbf-4943-a3ff-a45856f72021/
SH256 hash:
9b00e2fa33ad72dec22a5e107ab6886da72bbe0bed89a721e877c1dc3ce6a662
MD5 hash:
b4c9c16228f0ee1de70ffc6264fb720c
SHA1 hash:
437049e452a511e220abdb32df695cdf07f5a7d0
Link:
https://www.unpac.me/results/caf39c24-9fbf-4943-a3ff-a45856f72021/
SH256 hash:
f9d2e4ac794e2722708b991056c7e6ec94cdf830a349d9a75348419e1c4ffe1b
MD5 hash:
b994a638c4a4462f11c890c26dc649d2
SHA1 hash:
113f8a8248b623d8b2cfbc998cf14302179d7c3b
Link:
https://www.unpac.me/results/caf39c24-9fbf-4943-a3ff-a45856f72021/
SH256 hash:
fde58c8e44d682a5859d2666c413bcc1e70fc85d3e2ebeaa1fa9a524b33e3568
MD5 hash:
4fedc673e4a3fbf168c71b0a6e4a8303
SHA1 hash:
85cf17881d0811df03198c37e19c3a520bba3da4
Link:
https://www.unpac.me/results/caf39c24-9fbf-4943-a3ff-a45856f72021/
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/fde58c8e44d682a5859d2666c413bcc1e70fc85d3e2ebeaa1fa9a524b33e3568

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 fde58c8e44d682a5859d2666c413bcc1e70fc85d3e2ebeaa1fa9a524b33e3568

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/249199/

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