MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55043fccaa51456c6d7b5aab6245b5cb74dde6cf3a6358f79aaddb81b6e320db. 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 3 File information Comments
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SHA256 hash: 55043fccaa51456c6d7b5aab6245b5cb74dde6cf3a6358f79aaddb81b6e320db
SHA3-384 hash: 1c56ade90e547ac4b97caa84805c51eb85a833b50ed651e15c737b2bbbdb830188eb9facb3008ddc7d2aacf65c44cbf5
SHA1 hash: 130a7107cf6b22dddf6533f10b6e763bc59002aa
MD5 hash: b28324fa7ead5dae86b30af4950c0faa
humanhash: kentucky-sad-lamp-seventeen
File name:PO 128.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:679'936 bytes
First seen:2021-09-07 04:16:55 UTC
Last seen:2021-09-07 13:06:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'448 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 6144:Y9+buLr0XbnHX1jWTMLIwaig0R7bJDSuIigIS6wJ32fefRy8C5fVwFJLgG:NuL4Xb3Lpg0R/Jejigrw+RBC5
Threatray 9'164 similar samples on MalwareBazaar
TLSH T122E42D3E18FE23279176C7D6CBE48823F6C498AF3233A96567D747654316A4634C322E
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
5
# of downloads :
207
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO 128.exe
Verdict:
Malicious activity
Analysis date:
2021-09-07 04:17:17 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/b452392a-1570-4769-b6d1-e9592280f835

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/185787/
Detection(s):
SecuriteInfo.com.AgentTesla-FDCVB28324FA7EAD.29877.22244.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Sending a UDP request
Launching a process
Creating a file
Launching the process to change network settings
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Gathering data
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/846222
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 478653 Sample: PO 128.exe Startdate: 07/09/2021 Architecture: WINDOWS Score: 100 36 www.w88linklogin.com 2->36 38 w88linklogin.com 2->38 42 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 6 other signatures 2->48 11 PO 128.exe 3 2->11         started        signatures3 process4 file5 28 C:\Users\user\AppData\...\PO 128.exe.log, ASCII 11->28 dropped 14 RegSvcs.exe 11->14         started        process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.wecarefamilyphysicians.com 185.151.30.167, 49715, 80 TWENTYIGB United Kingdom 17->30 32 www.promoterss.com 35.209.21.30, 49719, 80 GOOGLE-2US United States 17->32 34 10 other IPs or domains 17->34 40 System process connects to network (likely due to code injection or exploit) 17->40 21 control.exe 17->21         started        signatures10 process11 signatures12 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/55043fccaa51456c6d7b5aab6245b5cb74dde6cf3a6358f79aaddb81b6e320db/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-07 03:56:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
13 of 43 (30.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kucd7tfkkfcwy3l3lkvwernvzn2n3zwphjrvr542vxnydnxdednq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
112816e3c681b862208badf3069a7108fb356effaeab80d0235b613e653d9da5
Formbook
2579540806631bf43383d340bf445855f71106614b40854ca9cf33265a24f900
Formbook
47e5619a856e90342ba0b34fb9f27ebd2bcf10b99b31f93aaabd819699922628
Formbook
c3dad4eb294afef3dd4251826c1c1d25679c1044120e8bfaaea14e582be06357
Formbook
c6851d4bfcc3b1845ed1ca30aec2c03e658b94cbba0a6d5e398c9da9b6b461a2
Formbook
db6988403e9bf2b750a78237f65394acafdd31173f013bbb789156d76c4d5eab
Formbook
e5087564339ba6df9121621508233b27e2cac0ef94afa68a3dc777792bc18389
Formbook
+ 9'154 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:n58i loader rat suricata
Link:
https://tria.ge/reports/210907-ewc1hsehen/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.mack3sleeve.com/n58i/
Unpacked files
SH256 hash:
8cff129ca2360c5eff1f061536fe264c44a88b66519fd7f3353f6fcfd2bc111a
MD5 hash:
f914c8bfed6d43272fb24a861f2ca041
SHA1 hash:
5bf498268bc92b4cd8463fed104bda65297dc794
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/58053436-b902-41b9-aee9-4101a54d7818/
Parent samples :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 hash:
9a569be1313734a7a5657149f890204e1246833e80ac0e45c15b9ebc972cfa99
MD5 hash:
db1ca79a10eb8debc020653b67a41ed4
SHA1 hash:
c9aff868749946879d85e0c75c11a085d3c244c2
Link:
https://www.unpac.me/results/58053436-b902-41b9-aee9-4101a54d7818/
SH256 hash:
a2e61d9c3b398d9ce1579ba631d42f12247e219013221dc1679aebadcc4bf374
MD5 hash:
b9f2791143f5f0918ca9b80a737c99a3
SHA1 hash:
30c9af19e7f058b7e203f798e5d0a42afadbd417
Link:
https://www.unpac.me/results/58053436-b902-41b9-aee9-4101a54d7818/
SH256 hash:
55043fccaa51456c6d7b5aab6245b5cb74dde6cf3a6358f79aaddb81b6e320db
MD5 hash:
b28324fa7ead5dae86b30af4950c0faa
SHA1 hash:
130a7107cf6b22dddf6533f10b6e763bc59002aa
Link:
https://www.unpac.me/results/58053436-b902-41b9-aee9-4101a54d7818/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/55043fccaa51/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/55043fccaa51456c6d7b5aab6245b5cb74dde6cf3a6358f79aaddb81b6e320db

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.

Malspam

Formbook

Executable exe 55043fccaa51456c6d7b5aab6245b5cb74dde6cf3a6358f79aaddb81b6e320db

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/185787/

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