MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef520569d3d41e7518fc904545214a6c48ae4344faab6183889403c1a38c77f2. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef520569d3d41e7518fc904545214a6c48ae4344faab6183889403c1a38c77f2
SHA3-384 hash: 5442f399243b231408029e56685a9c0822dcfc6d0345a795f2eb6415a419483b06e367fde0552fd660626486b71b3a7a
SHA1 hash: 30d4411ee95b1e05bb79d08eaf8ea901f645871e
MD5 hash: b585b4d72893707f229f2a413b59c65a
humanhash: rugby-kitten-gee-lactose
File name:b585b4d72893707f229f2a413b59c65a
Download: download sample
Signature Formbook
Create hunting rule
File size:461'824 bytes
First seen:2021-11-18 20:31:40 UTC
Last seen:2021-11-18 22:59:48 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'633 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:xh9ZDWXoODI+0ozDWrNmX2hQwI0X4xgnDgyKAeXJi:T9ZXsIsDWxiRgDgyKvJi
Threatray 9'001 similar samples on MalwareBazaar
TLSH T15AA4F16167688B27C67817F88065F73D0BB59EB1B826D78C6DC0B8DB3E31B421814B87
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b585b4d72893707f229f2a413b59c65a
Verdict:
Malicious activity
Analysis date:
2021-11-18 20:40:06 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/bad68e54-d7fd-428c-bc0f-03fe4aa41b39

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/207395/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.12389.17154.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6196b8484912a8c920a2f1b3/reports/1f62f9ef-6ec0-403a-b350-0c6a4a882d55/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/47cb7718-e884-4162-a878-714ff67dc231
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/892300
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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 dropped file
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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
Sigma detected: Suspicius Add Task From User AppData Temp
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 524769 Sample: vGULtWc6Jh Startdate: 18/11/2021 Architecture: WINDOWS Score: 100 50 www.omshivematka.com 2->50 52 www.marmorariapiramide.online 2->52 54 2 other IPs or domains 2->54 62 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->62 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 11 other signatures 2->68 11 vGULtWc6Jh.exe 7 2->11         started        signatures3 process4 file5 44 C:\Users\user\AppData\...\aWrlmwyvwoVQ.exe, PE32 11->44 dropped 46 C:\Users\user\AppData\Local\...\tmp838A.tmp, XML 11->46 dropped 48 C:\Users\user\AppData\...\vGULtWc6Jh.exe.log, ASCII 11->48 dropped 74 Uses schtasks.exe or at.exe to add and modify task schedules 11->74 76 Adds a directory exclusion to Windows Defender 11->76 78 Tries to detect virtualization through RDTSC time measurements 11->78 80 Injects a PE file into a foreign processes 11->80 15 vGULtWc6Jh.exe 11->15         started        18 powershell.exe 25 11->18         started        20 schtasks.exe 1 11->20         started        22 vGULtWc6Jh.exe 11->22         started        signatures6 process7 signatures8 82 Modifies the context of a thread in another process (thread injection) 15->82 84 Maps a DLL or memory area into another process 15->84 86 Sample uses process hollowing technique 15->86 88 Queues an APC in another process (thread injection) 15->88 24 explorer.exe 15->24 injected 27 conhost.exe 18->27         started        29 conhost.exe 20->29         started        process9 signatures10 72 System process connects to network (likely due to code injection or exploit) 24->72 31 rundll32.exe 24->31         started        34 autofmt.exe 24->34         started        process11 signatures12 90 Self deletion via cmd delete 31->90 92 Modifies the context of a thread in another process (thread injection) 31->92 94 Maps a DLL or memory area into another process 31->94 96 Tries to detect virtualization through RDTSC time measurements 31->96 36 explorer.exe 4 145 31->36         started        40 cmd.exe 1 31->40         started        process13 dnsIp14 56 www.vetpipes.com 104.143.9.210, 49855, 80 VIVIDHOSTINGUS United States 36->56 58 www.krallechols.quest 37.123.118.150, 49858, 80 UK2NET-ASGB United Kingdom 36->58 60 19 other IPs or domains 36->60 70 System process connects to network (likely due to code injection or exploit) 36->70 42 conhost.exe 40->42         started        signatures15 process16
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef520569d3d41e7518fc904545214a6c48ae4344faab6183889403c1a38c77f2/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-18 20:32:08 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
166559731ad15341f955bf8a16708f93542bef868c33f02f70e9b27f57b991a3
Formbook
2bee14cbe1953b3a702d00e40417ff1d6b090f46116d62abaf2e255468d93bbe
Formbook
978a3b17f431b7ed469cd02080d82e4fb9d0b578417d061739fa790af3fb2741
Formbook
9cbd20f7dfa4e57fa2adcf34f86c5e2a04b36e346493995d6c9ef85c3960eeb7
Formbook
c73d24893e3cde68e7cab69f7dbccdccd4b5b32a8a1f226c4ec38de3c4ae11fb
Formbook
c8409ef72cffceaf4b66cb2ba74ed66316cf395e1b1ef9014a9024e44ef4136e
Formbook
d3c68ebad6229b1da92061291639f9b48e3f76fd4c524a9850b4fbb311e180f8
Formbook
+ 8'991 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:scb0 loader rat
Link:
https://tria.ge/reports/211118-zbad4sfedn/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.vetpipes.com/scb0/
Unpacked files
SH256 hash:
cc5c5860e83b708cd158454165cbeb714767119946049de5aa7677685be75c14
MD5 hash:
83cbea4dec6e5b64a85ee9b6f9ff7598
SHA1 hash:
5c1d12b792c32ba73b7bf2634da5e4d9fbcd7d4e
Link:
https://www.unpac.me/results/384f698f-b319-47ac-a044-7c3ca0099528/
SH256 hash:
b4860a223a7d37f93cbc0a322b2a91a59f0a46b7afaac373dad0e1fc6067b5f7
MD5 hash:
75652887605247a9978ca094de1a8fcc
SHA1 hash:
ea3b3309da6cc35c68a7710ae37b6d4df51bdea6
Link:
https://www.unpac.me/results/384f698f-b319-47ac-a044-7c3ca0099528/
SH256 hash:
6242485a3c1c93aecc64bf33b5f99f14b67336dcfc8f96a5bba8147557d64440
MD5 hash:
60f645f8dc5fbe5b1c256318232d7ce7
SHA1 hash:
4c9d879bf07a222e9b957b847d9cffa08904acb7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/384f698f-b319-47ac-a044-7c3ca0099528/
Parent samples :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 hash:
ef520569d3d41e7518fc904545214a6c48ae4344faab6183889403c1a38c77f2
MD5 hash:
b585b4d72893707f229f2a413b59c65a
SHA1 hash:
30d4411ee95b1e05bb79d08eaf8ea901f645871e
Link:
https://www.unpac.me/results/384f698f-b319-47ac-a044-7c3ca0099528/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ef520569d3d4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ef520569d3d41e7518fc904545214a6c48ae4344faab6183889403c1a38c77f2

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
Create hunting rule
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 ef520569d3d41e7518fc904545214a6c48ae4344faab6183889403c1a38c77f2

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1799975/
Cape
Cape
https://www.capesandbox.com/analysis/207395/

Comments


Avatar
zbet commented on 2021-11-18 20:31:41 UTC

url : hxxp://198.23.213.9/588885/vbc.exe