MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5c9a6aca5e4cc643a1c9d8f846bf0444577bf45ef94f5a2ac5012c810d277248. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments 1

SHA256 hash: 5c9a6aca5e4cc643a1c9d8f846bf0444577bf45ef94f5a2ac5012c810d277248
SHA3-384 hash: 7855cd2629d91d5b92a1b228e25dc37d7db84d22100af3cd50d85357cd233f6c8c1cc9a3097c7d26ba26e9f5c5c3f567
SHA1 hash: c2c528a538a3379c4d8ef68bc9edcf90e092ab47
MD5 hash: b5bace5942a11ab8ce216ca558f81812
humanhash: washington-washington-equal-lima
File name:b5bace5942a11ab8ce216ca558f81812
Download: download sample
Signature Formbook
File size:4'608 bytes
First seen:2021-09-02 14:21:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 48:6jtubkBLMJmlRCQ0o7jhIBhZsjyiv2olvMPln9fOulPTKqXSfbNtm:uu2JbN79C+jnZvMNnb9TSzNt
Threatray 9'028 similar samples on MalwareBazaar
TLSH T17A919741A7D842AAE0770B706CF383516BB4F5269D7687AE64C4431FBD62B448D63BB0
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
240
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b5bace5942a11ab8ce216ca558f81812
Verdict:
Malicious activity
Analysis date:
2021-09-02 15:31:12 UTC
Tags:
opendir loader

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Running batch commands
Creating a process with a hidden window
Creating a file
Sending an HTTP GET request to an infection source
Creating a file in the %temp% directory
Launching a process
Creating a process from a recently created file
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Launching cmd.exe command interpreter
Sending a UDP request
Downloading the file
Connection attempt to an infection source
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
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
Powershell drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell download and execute file
Sigma detected: PowerShell DownloadFile
Sigma detected: Suspicious Script Execution From Temp Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to download and execute files (via powershell)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 476519 Sample: 174jAWlXyW Startdate: 02/09/2021 Architecture: WINDOWS Score: 100 53 www.ericalife.com 2->53 75 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->75 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 8 other signatures 2->81 14 174jAWlXyW.exe 2 2->14         started        signatures3 process4 file5 49 C:\Users\user\AppData\...\174jAWlXyW.exe.log, ASCII 14->49 dropped 17 cmd.exe 1 14->17         started        process6 dnsIp7 51 198.23.251.109, 49729, 80 AS-COLOCROSSINGUS United States 17->51 71 Suspicious powershell command line found 17->71 73 Tries to download and execute files (via powershell) 17->73 21 powershell.exe 13 17->21         started        23 powershell.exe 14 18 17->23         started        27 conhost.exe 17->27         started        signatures8 process9 file10 29 vbc.exe 14 21->29         started        47 C:\Users\user\AppData\Local\Temp\vbc.exe, PE32 23->47 dropped 85 Powershell drops PE file 23->85 signatures11 process12 dnsIp13 61 img.neko.airforce 167.172.239.151, 443, 49730 DIGITALOCEAN-ASNUS United States 29->61 93 Multi AV Scanner detection for dropped file 29->93 95 Machine Learning detection for dropped file 29->95 97 Maps a DLL or memory area into another process 29->97 99 Tries to detect virtualization through RDTSC time measurements 29->99 33 vbc.exe 29->33         started        signatures14 process15 signatures16 63 Modifies the context of a thread in another process (thread injection) 33->63 65 Maps a DLL or memory area into another process 33->65 67 Sample uses process hollowing technique 33->67 69 Queues an APC in another process (thread injection) 33->69 36 explorer.exe 33->36 injected process17 dnsIp18 55 www.subusastry.com 199.34.228.79, 49753, 80 WEEBLYUS United States 36->55 57 www.bharathub.net 91.195.240.94, 49750, 80 SEDO-ASDE Germany 36->57 59 5 other IPs or domains 36->59 83 System process connects to network (likely due to code injection or exploit) 36->83 40 cmmon32.exe 36->40         started        signatures19 process20 signatures21 87 Modifies the context of a thread in another process (thread injection) 40->87 89 Maps a DLL or memory area into another process 40->89 91 Tries to detect virtualization through RDTSC time measurements 40->91 43 cmd.exe 1 40->43         started        process22 process23 45 conhost.exe 43->45         started       
Threat name:
ByteCode-MSIL.Trojan.Nitol
Status:
Malicious
First seen:
2021-09-02 14:22:17 UTC
AV detection:
13 of 28 (46.43%)
Threat level:
  5/5
Result
Malware family:
xloader
Score:
  10/10
Tags:
family:xloader campaign:b6cu loader rat
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.xn--marketingrevolucin-61b.com/b6cu/
Dropper Extraction:
http://198.23.251.109/kswbc/vbc.exe
Unpacked files
SH256 hash:
5c9a6aca5e4cc643a1c9d8f846bf0444577bf45ef94f5a2ac5012c810d277248
MD5 hash:
b5bace5942a11ab8ce216ca558f81812
SHA1 hash:
c2c528a538a3379c4d8ef68bc9edcf90e092ab47
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
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 5c9a6aca5e4cc643a1c9d8f846bf0444577bf45ef94f5a2ac5012c810d277248

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2021-09-02 14:21:13 UTC

url : hxxp://198.23.251.109/windows/kswbc.exe