MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f37ee18d84c7246b9a20900906797c3ec3fbc684f61a23c750b9ec444638a63. 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
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SHA256 hash: 4f37ee18d84c7246b9a20900906797c3ec3fbc684f61a23c750b9ec444638a63
SHA3-384 hash: 5499a0aa1fa867836c2d277a7859bd06440abc0338e214fb8d3582287737c83eeb928041d2a0eb118d648488e8dbb8d7
SHA1 hash: a00701a3a6ef3ea680e2cace36e89af03a5f8c3e
MD5 hash: 085c1e416fbbe0282271cbc45de0c415
humanhash: cup-pluto-quiet-vegan
File name:04KA46vcoMPfNAj.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:461'312 bytes
First seen:2021-05-28 07:05:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:k8CXHan9NI3t68H8NOg1xvtKWF+PBJK88l+UGyR:0XHW0t6lcuOUfR
Threatray 5'435 similar samples on MalwareBazaar
TLSH 89A4011177745227D6BE03B8BA1E790E67F7C2666D55E3C98C83B3D927813C24206B8B
Reporter GovCERT_CH
Tags:FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
115
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
04KA46vcoMPfNAj.exe
Verdict:
Malicious activity
Analysis date:
2021-05-28 07:08:56 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/2ed33fa5-4903-4168-9aad-c1ef8cedb959

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/162906/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Creating a window
Sending a UDP request
Unauthorized injection to a system process
Unauthorized injection to a browser process
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.
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/793682
Signature
.NET source code contains potential unpacker
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
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious Svchost Process
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: 426078 Sample: 04KA46vcoMPfNAj.exe Startdate: 28/05/2021 Architecture: WINDOWS Score: 100 31 www.haulatob.com 2->31 33 haulatob.com 2->33 41 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->41 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 9 other signatures 2->47 11 04KA46vcoMPfNAj.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\...\04KA46vcoMPfNAj.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 04KA46vcoMPfNAj.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 35 glorioustoday.com 184.168.131.241, 49731, 80 AS-26496-GO-DADDY-COM-LLCUS United States 18->35 37 www.scm.coffee 18->37 39 3 other IPs or domains 18->39 49 System process connects to network (likely due to code injection or exploit) 18->49 22 svchost.exe 18->22         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4f37ee18d84c7246b9a20900906797c3ec3fbc684f61a23c750b9ec444638a63/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-05-28 07:06:08 UTC
AV detection:
18 of 47 (38.30%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j4364ggyjrzenoncbeajaz4xypwd7pdij5q2epdvbopmirddrjrq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
6f4fbab85c58d588450bc856ceff3894645e0033b4c4d2684184a8430c01daa4
Formbook
7c6393b4e86ea5cec49c0f814b17e4bb85aa447c19896037252a94ff6416ce1b
Formbook
8bb3e6cace7598576464639d7f88d0c4d55919b2e110a341df89a1569ae0d5b7
Formbook
a86b45ce304bc537005a6dc78cfa0f694ae2cdf6c35ad3dc2f88fc50aaa2e388
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b3c5b3cf581d15fcbacf67b4bdba199bfe7089704875746109b3206eb07b99e2
Formbook
b69eeacc4ded0d792e5dbfaeb799a95ead525d936dba5164ba1d34a61b1d8624
Formbook
bdd78b39557fa2b1ae72243d8d9209fa31e234b061133e4e5e9743659fadc0df
Formbook
c2336a135878814b7b9b82146879a4ee8910e0a7e540415cb3716e1f62c1ea41
Formbook
c3eabd57f3b36a3ae575509b4453872ad7f3313688d7d00432f967067486fbeb
Formbook
d0116b0ea676a655b1d55a2b7a79fb2585c1d04803e9d1d6f9cd1da15f789138
Formbook
+ 5'425 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/210528-hdga6a6bre/
Behaviour
Gathers network information
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
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.haulatob.com/frf/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.71
Link:
https://yomi.yoroi.company/submissions/4f37ee18d84c7246b9a20900906797c3ec3fbc684f61a23c750b9ec444638a63

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:Skystars_Malware_Imphash
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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 4f37ee18d84c7246b9a20900906797c3ec3fbc684f61a23c750b9ec444638a63

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/162906/

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