MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5f41c8e6da11a0b75eea8b9de304fe54da16779c6e1046c3c0bea59b1b695061. 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: 5f41c8e6da11a0b75eea8b9de304fe54da16779c6e1046c3c0bea59b1b695061
SHA3-384 hash: 355b9a2880caf0127e7c1bc415006955d3e96650217be55282164797b6346cd807bbfecfeb512dcc9f3c70324c693e3f
SHA1 hash: 81c1c2f7dd726f58c546fb95f8cf963d6a4908db
MD5 hash: b3fd22b2f3769ed623fa28e70bf5328e
humanhash: vermont-violet-tennis-alaska
File name:b3fd22b2f3769ed623fa28e70bf5328e
Download: download sample
Signature Formbook
Create hunting rule
File size:360'547 bytes
First seen:2021-12-06 12:55:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 6144:rGirsHL2Nkd/64kHK0bM1k7ZNkGTh0hPlWkWNmeXuUVHt90XcLIuabxO49eDDeG4:vsLtZ6pU1k7ZNkG90h4kW4eXdVHnqcL2
Threatray 12'432 similar samples on MalwareBazaar
TLSH T1DA7423070A809B7BC86F26700F79E339F3B589EC466F8A1F2B744FBA59F69015411663
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
142
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
REMITTANCE ADVICE.xlsx
Verdict:
Malicious activity
Analysis date:
2021-12-06 12:32:36 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/4751140b-162c-4daa-8c70-39595be366ef

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/211778/
Detection(s):
SecuriteInfo.com.Trojan.Siggen15.64867.32313.26756.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
DNS request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/1090/overview
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
75%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/61ae0827fa72c81b5b0e6168/reports/c41bd509-3c3b-4d6f-9039-8b42f4cb6a9c/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:
Generic Malware
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4fb67a1d-ca8f-4906-8af6-f45db74fd963
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/902260
Signature
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 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
Sigma detected: CMSTP Execution Process Creation
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 534738 Sample: IIlwUKsIBO Startdate: 06/12/2021 Architecture: WINDOWS Score: 100 35 www.retrorecycling.com 2->35 37 www.procofun.com 2->37 39 3 other IPs or domains 2->39 49 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->49 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 6 other signatures 2->55 11 IIlwUKsIBO.exe 17 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\Local\...\ckqoxxij.dll, PE32 11->33 dropped 67 Tries to detect virtualization through RDTSC time measurements 11->67 69 Injects a PE file into a foreign processes 11->69 15 IIlwUKsIBO.exe 11->15         started        signatures6 process7 signatures8 71 Modifies the context of a thread in another process (thread injection) 15->71 73 Maps a DLL or memory area into another process 15->73 75 Sample uses process hollowing technique 15->75 77 Queues an APC in another process (thread injection) 15->77 18 explorer.exe 15->18 injected process9 signatures10 47 System process connects to network (likely due to code injection or exploit) 18->47 21 cmstp.exe 12 18->21         started        process11 dnsIp12 41 www.smmbazar.net 21->41 57 Self deletion via cmd delete 21->57 59 Modifies the context of a thread in another process (thread injection) 21->59 61 Maps a DLL or memory area into another process 21->61 63 Tries to detect virtualization through RDTSC time measurements 21->63 25 explorer.exe 2 160 21->25         started        29 cmd.exe 1 21->29         started        signatures13 process14 dnsIp15 43 www.kczu.net 156.240.157.226, 49833, 80 Africa-on-Cloud-ASZA Seychelles 25->43 45 www.smmbazar.net 127.0.0.1 unknown unknown 25->45 65 System process connects to network (likely due to code injection or exploit) 25->65 31 conhost.exe 29->31         started        signatures16 process17
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5f41c8e6da11a0b75eea8b9de304fe54da16779c6e1046c3c0bea59b1b695061/
Threat name:
Win32.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2021-12-06 11:02:10 UTC
AV detection:
8 of 45 (17.78%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
4b50745e74fea6faa516b4d46b7c9fbe36fdae2301b76ec940635d033707a2c8
Formbook
5da3ef49a658c41da32f3258e3124c24e9641496ea1c2443d40c680a9f7b0e8c
Formbook
93360bc4a370d454533b778b6a589fc9ac51ac3e9490546c2959f33d5da659c9
Formbook
9b66b69700ebabb8a39e5b5bc094445df910f55c5c5166fa29e3128b1dc1ba10
Formbook
a4c0f021f7b7e196e3a5d8e324cb4084c14941c94d2aab667eb886464948b44a
Formbook
e5c2574c2e340ec822b2d9a2e576e196f0a0c8739360387c7f2d1d1d0414ef3c
Formbook
ede0725557e08c21c523681648ace4a5b9d7b3dcfc29f4cda7db92c80b61f038
Formbook
+ 12'422 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:m07f loader rat
Link:
https://tria.ge/reports/211206-p5r6xaeagq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.ff4cu6twc.xyz/m07f/
Unpacked files
SH256 hash:
5f41c8e6da11a0b75eea8b9de304fe54da16779c6e1046c3c0bea59b1b695061
MD5 hash:
b3fd22b2f3769ed623fa28e70bf5328e
SHA1 hash:
81c1c2f7dd726f58c546fb95f8cf963d6a4908db
Link:
https://www.unpac.me/results/d140f4a3-7b0c-4e7a-90f4-5504c2e65f5b/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/5f41c8e6da11/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.33
Link:
https://yomi.yoroi.company/submissions/5f41c8e6da11a0b75eea8b9de304fe54da16779c6e1046c3c0bea59b1b695061

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Formbook

Executable exe 5f41c8e6da11a0b75eea8b9de304fe54da16779c6e1046c3c0bea59b1b695061

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/211778/
  
URLhaus
https://urlhaus.abuse.ch/url/1858458/

Comments


Avatar
zbet commented on 2021-12-06 12:55:03 UTC

url : hxxp://23.94.174.144/881111/vbc.exe