MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efaa4527b761b2acb19d40051d303867ce0798ea1e32cf72b4408898d01b463b. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
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SHA256 hash: efaa4527b761b2acb19d40051d303867ce0798ea1e32cf72b4408898d01b463b
SHA3-384 hash: 8b2268a4802a0202cfbfd876184adb2a00ae379d78515d9c3e3a9b1da205d25afc53b957d26bbecd070f5e1f1bd8b8a1
SHA1 hash: 8b8e2bedb97d1d130593085dc98b396786c062bd
MD5 hash: d970cdf1e39fb69c591ac0f3de86e98d
humanhash: violet-bulldog-colorado-gee
File name:d970cdf1e39fb69c591ac0f3de86e98d.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'107'968 bytes
First seen:2021-12-17 16:05:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:2Kc2qL0VOmeUUUUUUUi1Buz/z+gcgLrISeb403lhaaFnAZzABuSK3VUUUUUUUUU1:NVqL0VPScCDKEb4w6aFFUSK361
Threatray 14'981 similar samples on MalwareBazaar
TLSH T1ED35078525AD3B25FD7853F800AA6C94C7BA7D6A717EC68D8CC330D72973F924850A1B
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
181
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/214848/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
75%
Tags:
formbook obfuscated
Link:
https://www.filescan.io/uploads/61bcb56da2eae65b861f4034/reports/75be0f85-9499-449f-a725-c934e8fc903e/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/227f29c0-34ac-4621-bb47-8bebc17c92f4
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/909200
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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 domain / URL
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
Self deletion via cmd delete
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 541678 Sample: lgZMIzJ2EH.exe Startdate: 17/12/2021 Architecture: WINDOWS Score: 100 31 www.presticgroup.com 2->31 33 www.kdsh-uae.com 2->33 35 2 other IPs or domains 2->35 55 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->55 57 Multi AV Scanner detection for domain / URL 2->57 59 Found malware configuration 2->59 61 8 other signatures 2->61 10 lgZMIzJ2EH.exe 3 2->10         started        signatures3 process4 file5 29 C:\Users\user\AppData\...\lgZMIzJ2EH.exe.log, ASCII 10->29 dropped 63 Tries to detect virtualization through RDTSC time measurements 10->63 65 Injects a PE file into a foreign processes 10->65 14 lgZMIzJ2EH.exe 10->14         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 14->67 69 Maps a DLL or memory area into another process 14->69 71 Sample uses process hollowing technique 14->71 73 Queues an APC in another process (thread injection) 14->73 17 chkdsk.exe 14->17         started        20 explorer.exe 14->20 injected process9 dnsIp10 43 Self deletion via cmd delete 17->43 45 Modifies the context of a thread in another process (thread injection) 17->45 47 Maps a DLL or memory area into another process 17->47 49 Tries to detect virtualization through RDTSC time measurements 17->49 23 cmd.exe 1 17->23         started        37 www.bestwlz.com 23.230.207.248, 49779, 80 EGIHOSTINGUS United States 20->37 39 www.heidecide.xyz 20->39 41 heidecide.xyz 34.102.136.180, 49784, 80 GOOGLEUS United States 20->41 51 System process connects to network (likely due to code injection or exploit) 20->51 53 Performs DNS queries to domains with low reputation 20->53 25 autochk.exe 20->25         started        signatures11 process12 process13 27 conhost.exe 23->27         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/efaa4527b761b2acb19d40051d303867ce0798ea1e32cf72b4408898d01b463b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-12-17 08:28:45 UTC
File Type:
PE (.Net Exe)
Extracted files:
72
AV detection:
20 of 28 (71.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=56vekj5xmgzkzmm5iacr2mbym7hapghkdyzm64vuicejrua3iy5q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
174efa98c8e09e5ac9d2916509eb3323fa20dd47dd3173ad069a2cb5e17b1852
Formbook
1a77fe43c21c77b47c1ea009c8a7c082eb11abcfb48ff4375cce7edc0925e9c6
Formbook
2c81bc76bb2b34fc085a6ff0beb19fda2b1e400ad67341f55185b8d8b7351643
Formbook
4c6f60ba070864a86dceaa5785b1dceb395cbe4667b9c539bc0675411b4e16a9
Formbook
667e8635796cd94ca4161f15f33e8c9d837c7c35a25d583e4f978ad76d9b86f8
Formbook
84fe2a2e7c5228db514d071b4857c0361c07be4de68c26b4fd47d18452217765
Formbook
87c4a09709a7ba312539673bc4e85e4543d8e1ac4da43ce58adf8635f97f6207
Formbook
8ca2107e19d721b560f7e76c4a7ccb03869a24f478dc710159341ddc170e1741
Formbook
ba10b4ebe4ae3556a1320c7a9b8cb14da16042061c33f1ded73c193cbac8f346
Formbook
bc42c1e528e70d0f4152e78278ed1a0e4bacf4cab8bb21da9ea8f99a48676355
Formbook
+ 14'971 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:hno0 loader rat
Link:
https://tria.ge/reports/211217-tj3gzaefbr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Unpacked files
SH256 hash:
e91fb76e13425f9f6253662e380c5bc84196251c9f3969b960d6cbcec79f3d00
MD5 hash:
2dd5b522b207576e74a6e7100367b78a
SHA1 hash:
766051b069420e0539b5a49cf32a72d3cbf44f7a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/64c0b876-e99c-4053-b3ab-ccaf82098ab2/
Parent samples :
2c81bc76bb2b34fc085a6ff0beb19fda2b1e400ad67341f55185b8d8b7351643
4c6f60ba070864a86dceaa5785b1dceb395cbe4667b9c539bc0675411b4e16a9
ba10b4ebe4ae3556a1320c7a9b8cb14da16042061c33f1ded73c193cbac8f346
667e8635796cd94ca4161f15f33e8c9d837c7c35a25d583e4f978ad76d9b86f8
87c4a09709a7ba312539673bc4e85e4543d8e1ac4da43ce58adf8635f97f6207
775e97d800d0495cc950870530ddd9fc3a3169b95095c6cba2f29c7b99e0cac1
174efa98c8e09e5ac9d2916509eb3323fa20dd47dd3173ad069a2cb5e17b1852
efaa4527b761b2acb19d40051d303867ce0798ea1e32cf72b4408898d01b463b
SH256 hash:
b1d884862d675c973caf0123b0aae637240e8bdb388addfe14d98894b33bf547
MD5 hash:
c6ddbdd053f35841811cad3a235b0e59
SHA1 hash:
ff49643ee8a8a948ebe8474cec9ec481b2674547
Link:
https://www.unpac.me/results/64c0b876-e99c-4053-b3ab-ccaf82098ab2/
SH256 hash:
9f5763966bacdc6de3944a6e06a49b05869c38f2e98b32cb93b483a480a6ffff
MD5 hash:
3418c620c4b9dd4533a88f1ba5ec3ff1
SHA1 hash:
12f6aaf1c90030c4063d42a27b2e7000a08b6e74
Link:
https://www.unpac.me/results/64c0b876-e99c-4053-b3ab-ccaf82098ab2/
SH256 hash:
efaa4527b761b2acb19d40051d303867ce0798ea1e32cf72b4408898d01b463b
MD5 hash:
d970cdf1e39fb69c591ac0f3de86e98d
SHA1 hash:
8b8e2bedb97d1d130593085dc98b396786c062bd
Link:
https://www.unpac.me/results/64c0b876-e99c-4053-b3ab-ccaf82098ab2/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/efaa4527b761/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/efaa4527b761b2acb19d40051d303867ce0798ea1e32cf72b4408898d01b463b

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
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Rule name:Skystars_Malware_Imphash
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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 efaa4527b761b2acb19d40051d303867ce0798ea1e32cf72b4408898d01b463b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1890071/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/214848/

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