MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91cdb947644a5a802adac7583a79e7e560da38839489a02e7464730ff66fd004. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91cdb947644a5a802adac7583a79e7e560da38839489a02e7464730ff66fd004
SHA3-384 hash: 65334c863f4af7046e2920fa903199ba8cd9082fed729270a545863aa8a1cefd9bfa9bc44d852aa30c90c263f2c4b1ad
SHA1 hash: 91449c85fb2fa5d27f8db3c8c08cdfb9d3287162
MD5 hash: ed43ff447cd5486610731a627a930607
humanhash: green-cup-montana-carolina
File name:ed43ff447cd5486610731a627a930607.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'148'416 bytes
First seen:2021-07-22 07:59:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:pYxySdkFS+W/MMQM/3xu+ECDacAQahp6:ShdnrMpJUDO
Threatray 6'691 similar samples on MalwareBazaar
TLSH T188358C61F307EA98EC2613F8C87AD8F12263BD6DD525892B359E7E1D79B334050E2907
dhash icon ae53d212daccccca (8 x Formbook, 4 x AsyncRAT, 1 x NetWire)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
127
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ed43ff447cd5486610731a627a930607.exe
Verdict:
Malicious activity
Analysis date:
2021-07-22 08:31:59 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b32d109c-fd2b-40b6-99c9-baa9adcdce2b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/173249/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.935-1.UNOFFICIAL
Create hunting rule

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/27fcc9d9-9682-42a4-9384-cc7c28a88d51
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/820013
Signature
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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 netstat to query active network connections and open ports
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 452425 Sample: 6KdTCZit4e.exe Startdate: 22/07/2021 Architecture: WINDOWS Score: 100 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 4 other signatures 2->42 10 6KdTCZit4e.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\6KdTCZit4e.exe.log, ASCII 10->28 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 56 Injects a PE file into a foreign processes 10->56 14 6KdTCZit4e.exe 10->14         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 30 seahorseblast.net 195.133.60.76, 49763, 80 INTENPL Russian Federation 17->30 32 www.thedreamcertificate.com 17->32 34 2 other IPs or domains 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 46 Uses netstat to query active network connections and open ports 17->46 21 NETSTAT.EXE 17->21         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 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/91cdb947644a5a802adac7583a79e7e560da38839489a02e7464730ff66fd004/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2021-07-21 07:18:24 UTC
AV detection:
9 of 46 (19.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=shg3sr3ejjniakw2y5mdu6ph4vqnuoedsse2altumrzq75tp2aca._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
25644ff35da89545c702b633182c4ff1f649dd64c9c8249be9afe7090359d87d
Formbook
46a43e78123a8400e4eecc145ab51509a3cd7baae19f450d5150bb762d0bc34e
Formbook
65a0c46c6663e844e38abc9cb562b1b1e8866be3d1c3616960379693db717463
Formbook
75f6b830aac78a018b89a35b5d7a3b0a33c4f5e4fc7547a335f3a5219dd7b132
Formbook
ab96b6ac9080fe40003b5259931da0e8fae1d5e57d602991d8bb06fa712bdd9b
Formbook
ad86b6dd3faef43b4ef56786e35a7d2b38a369e6082c72c3cac0267a5b8efc5a
Formbook
b3c5b3cf581d15fcbacf67b4bdba199bfe7089704875746109b3206eb07b99e2
Formbook
f8e8f64bb17ffb2fea18b7671602a76a8b5734607c7a7ae035dce8eed8381a74
Formbook
f8f02165547227a6692d503cf1203dcaf2d43b58219bb78cb0e42895f49a8121
Formbook
+ 6'681 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210722-d14zjwkhre/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.hometowncashbuyersgroup.com/kkt/
Unpacked files
SH256 hash:
83d9e44d9a311ea6fdbcbd09fdc816a2067806dcacf24beb5ee786191b1a3ea1
MD5 hash:
b1a7b752b6638ee03cffe5a1dde9213e
SHA1 hash:
52d215a173d2f293990f8c12fc7f4a86330a29cb
Link:
https://www.unpac.me/results/073935a6-9c7c-44a7-9c7e-e87abce51697/
SH256 hash:
91cdb947644a5a802adac7583a79e7e560da38839489a02e7464730ff66fd004
MD5 hash:
ed43ff447cd5486610731a627a930607
SHA1 hash:
91449c85fb2fa5d27f8db3c8c08cdfb9d3287162
Link:
https://www.unpac.me/results/073935a6-9c7c-44a7-9c7e-e87abce51697/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
Link:
https://yomi.yoroi.company/submissions/91cdb947644a5a802adac7583a79e7e560da38839489a02e7464730ff66fd004

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: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 91cdb947644a5a802adac7583a79e7e560da38839489a02e7464730ff66fd004

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/173249/
  
URLhaus
https://urlhaus.abuse.ch/url/1464912/
  
Delivery method
Distributed via web download

Comments