MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5c6248caa8d0e035434be7fefacaacdc490b1f763917683db5270cfe7d289aa. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5c6248caa8d0e035434be7fefacaacdc490b1f763917683db5270cfe7d289aa
SHA3-384 hash: f7363bdbb8bc3ac4ec882bd59989bd5aa417091ae0f697c1cb2781c35af835a6b611f38d8e2957d372ee677200f0d7d8
SHA1 hash: e3abdd3c1926a1934369b41b47269ba4697fc4d2
MD5 hash: 146634bc6551dd4b99d47a9f7b6bc6cb
humanhash: maine-maryland-beryllium-cardinal
File name:146634bc6551dd4b99d47a9f7b6bc6cb.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'286'144 bytes
First seen:2021-12-13 19:04:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 24576:8yC1iKj1UDgcyrjkHJ+MOkHkBD/xDwxgRR5zoYJIbZqGG:81iKjiDg/3kVOW0DZUCzoPFqGG
TLSH T117552317BAFC9972C1246FF85660522117F8EE4AB416E709CEDE74EA6B923805F016C3
File icon (PE):PE icon
dhash icon b3b3333969693b3b (69 x Formbook, 63 x AgentTesla, 26 x Loki)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
143
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
146634bc6551dd4b99d47a9f7b6bc6cb.exe
Verdict:
Malicious activity
Analysis date:
2021-12-13 19:10:42 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c365dec5-73f1-471e-b321-b60911baa652

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/213669/
Detection(s):
PUA.Win.Packer.Medvedev-6482674-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61b7996147bb875c085b1e12/reports/eaa6c8e8-f7f7-48ff-8d84-e158a3a6f914/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/02c5b59f-cea4-4b24-a25c-2e4d2692c80a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/906588
Signature
.NET source code contains potential unpacker
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 domain / URL
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
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 signatures2 2 Behavior Graph ID: 539065 Sample: CR7dfJzGsk.exe Startdate: 13/12/2021 Architecture: WINDOWS Score: 100 40 Multi AV Scanner detection for domain / URL 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 6 other signatures 2->46 10 CR7dfJzGsk.exe 3 2->10         started        14 explorer.exe 10 2->14         started        process3 file4 30 C:\Users\user\AppData\...\CR7dfJzGsk.exe.log, ASCII 10->30 dropped 56 Tries to detect virtualization through RDTSC time measurements 10->56 16 CR7dfJzGsk.exe 10->16         started        signatures5 process6 signatures7 32 Modifies the context of a thread in another process (thread injection) 16->32 34 Maps a DLL or memory area into another process 16->34 36 Sample uses process hollowing technique 16->36 38 Queues an APC in another process (thread injection) 16->38 19 explorer.exe 16->19 injected process8 process9 21 wlanext.exe 19->21         started        signatures10 48 Self deletion via cmd delete 21->48 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        26 explorer.exe 1 156 21->26         started        process11 process12 28 conhost.exe 24->28         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c5c6248caa8d0e035434be7fefacaacdc490b1f763917683db5270cfe7d289aa/
Threat name:
Win32.Backdoor.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-12-13 09:10:36 UTC
AV detection:
7 of 45 (15.56%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yxdcjdfkruhagvbuxz767lfkzxcjbmpxmoixna63kjym7z6srgva._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:c3f6 rat spyware stealer trojan
Link:
https://tria.ge/reports/211213-xrhdjsfbhl/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.www-supportfindmy.com/c3f6/
Unpacked files
SH256 hash:
9e7d7705c5be32083f8c108f7605ef81470ca87679e8b351168702632e3b944e
MD5 hash:
ab6ae737146ae3855e1444529feb4b64
SHA1 hash:
43df553db8d0f3bd4b2ee9e6b7bfe348ebc2aad7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/4922cb9e-568e-4556-90e6-8dd5303294e6/
Parent samples :
55028ddc6704717154ae4a43603da57d1099caee821c64c92722519f00c88e6d
c5c6248caa8d0e035434be7fefacaacdc490b1f763917683db5270cfe7d289aa
58d05ac8e9716f4322f5d39d676a3415c7f499e99c8fa5d920bbbecdb4a616b7
754d0c2b1277e1c89a1220f33cdb795900b882bfb5b0fc003b1880e55c4fbec1
633ad8beecf7e68a344492aa6722033b10aeb60cdf3ddeb2bc67dfa42efb16af
SH256 hash:
1127d6d1e67e7e4b491c63e4b61f8ffeaa5ccdf435677f3e7676b058ea52b956
MD5 hash:
fa34eea39b2fcabf569d9d575075d2dd
SHA1 hash:
f1c70f019a5926184c5ea3defcbe6c38bcba689e
Link:
https://www.unpac.me/results/4922cb9e-568e-4556-90e6-8dd5303294e6/
SH256 hash:
5dc85d4508fb87b8f82294d4dbd7ede9e5c68134ab5b81ab31d14260d7476bc6
MD5 hash:
5f6056cb0d937c8f5239035be36fafbe
SHA1 hash:
813ad260e4d2dc6d2d2e10e608ecce09dce7194b
Link:
https://www.unpac.me/results/4922cb9e-568e-4556-90e6-8dd5303294e6/
SH256 hash:
c5c6248caa8d0e035434be7fefacaacdc490b1f763917683db5270cfe7d289aa
MD5 hash:
146634bc6551dd4b99d47a9f7b6bc6cb
SHA1 hash:
e3abdd3c1926a1934369b41b47269ba4697fc4d2
Link:
https://www.unpac.me/results/4922cb9e-568e-4556-90e6-8dd5303294e6/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c5c6248caa8d/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/c5c6248caa8d0e035434be7fefacaacdc490b1f763917683db5270cfe7d289aa

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 c5c6248caa8d0e035434be7fefacaacdc490b1f763917683db5270cfe7d289aa

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/213669/
  
URLhaus
https://urlhaus.abuse.ch/url/1871135/
  
Delivery method
Distributed via web download

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