MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef6afcf6443963adffc7556a9ba1774d893dbcdabd7f5d5f30c84b5bd506a727. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef6afcf6443963adffc7556a9ba1774d893dbcdabd7f5d5f30c84b5bd506a727
SHA3-384 hash: f28d2d95b05e2951b1ead43b7f4bd03725de6a9f5a03bbf11d420996c6bed0782b341f7f492468f8f51426c62ca2801c
SHA1 hash: deed54683505f04574db49be27a5c020680f0c5d
MD5 hash: f025f14a9c8ac48339516a72957cefbb
humanhash: eighteen-april-batman-robin
File name:PO-AO XIANG FZCO.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:45'568 bytes
First seen:2022-04-22 06:51:00 UTC
Last seen:2022-04-27 08:17:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 384:yT5+/bWfffff4hrA52sHTidJkFNQXulaiAMwCKFH2S3dd0hUADkaj21Y8:aU/bnMPFNxlmMwCK/3deVDdK
Threatray 15'247 similar samples on MalwareBazaar
TLSH T17123E71A7DA6951AC5E43BF859B1518356367CE20024C18FECFA7F29ADB2313CCC266D
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 174f4559191b1b13 (81 x AgentTesla, 68 x Formbook, 34 x SnakeKeylogger)
Reporter cocaman
Tags:exe FormBook QUOTATION

Intelligence

File Origin
# of uploads :
4
# of downloads :
217
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Kfdstakd.exe
Verdict:
Suspicious activity
Analysis date:
2022-04-23 05:08:15 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/dfd11cb2-6761-43bf-8abd-f2d6ff3e8534

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/265642/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed pos
Link:
https://www.filescan.io/uploads/6262506a482f2f41cae6174e/reports/e74b9d42-6edf-4295-9bb5-6717716524a1/overview
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c0661087-336b-4e54-8be3-b74251b0dfbc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/981150
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
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 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: Application Executed Non-Executable Extension
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Rundll32 Without Any CommandLine Params
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
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 613637 Sample: PO-AO XIANG FZCO.exe Startdate: 22/04/2022 Architecture: WINDOWS Score: 100 38 www.breackae.xyz 2->38 56 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 12 other signatures 2->62 11 PO-AO XIANG FZCO.exe 15 4 2->11         started        signatures3 process4 dnsIp5 46 cdn.discordapp.com 162.159.135.233, 443, 49758 CLOUDFLARENETUS United States 11->46 36 C:\Users\user\...\PO-AO XIANG FZCO.exe.log, ASCII 11->36 dropped 68 Injects a PE file into a foreign processes 11->68 16 PO-AO XIANG FZCO.exe 11->16         started        19 cmd.exe 1 11->19         started        file6 signatures7 process8 signatures9 48 Modifies the context of a thread in another process (thread injection) 16->48 50 Maps a DLL or memory area into another process 16->50 52 Sample uses process hollowing technique 16->52 54 Queues an APC in another process (thread injection) 16->54 21 explorer.exe 16->21 injected 25 conhost.exe 19->25         started        27 timeout.exe 1 19->27         started        process10 dnsIp11 40 dotcreativedev.atl.jelastic.vps-host.net 216.154.219.136, 49858, 80 QTS-SUW1-ATL1US United States 21->40 42 www.medchemic.com 147.255.132.172, 49854, 80 LEASEWEB-USA-LAX-11US United States 21->42 44 30 other IPs or domains 21->44 64 System process connects to network (likely due to code injection or exploit) 21->64 66 Performs DNS queries to domains with low reputation 21->66 29 rundll32.exe 21->29         started        signatures12 process13 signatures14 70 Self deletion via cmd delete 29->70 72 Modifies the context of a thread in another process (thread injection) 29->72 74 Maps a DLL or memory area into another process 29->74 76 Tries to detect virtualization through RDTSC time measurements 29->76 32 cmd.exe 1 29->32         started        process15 process16 34 conhost.exe 32->34         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef6afcf6443963adffc7556a9ba1774d893dbcdabd7f5d5f30c84b5bd506a727/
Threat name:
Win32.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2022-04-22 03:51:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
17 of 41 (41.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=55vpz5sehfr2376hkvvjxilxjwet3pg2xv7v2xzqzbfvxvigu4tq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
04b751d8d2bee0880babadcee34e68f6333e4b0a636c7321e06361da1618cff1
Formbook
188e88b01bc05b9e23ce3133471d99ecaec9515404faa787f745fc70bafe4656
Formbook
45440ff61950e60ffe3af3d1b56641f2e7b1f681510b37d25d50c0cbacecf6bc
Formbook
45d9826dfa111b1780e3322915de84c8e4a6471ef51fd4819ce88b9bc6335019
Formbook
4ba70a201f9aeed927954ccf79ebba102df5f50c437c278636b1905b3f71058f
Formbook
92ab8821f6c4eedc8bec6abee96520514061e32b772831dc3ecb8e71f8f7bcb3
Formbook
af985554eebc4990f77fc7c337d7af4367c2e28acbb41386669e5fa3bb55fbcd
Formbook
da90895ec14c13c733ba3550194ab36a4c64130c5c2b2038c163dff0c505b3e3
Formbook
e0b985ed9547d4799d352c98ed428c0ba78e3abfec8897ec406ea07f306cb982
Formbook
+ 15'237 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:fk84 loader rat suricata
Link:
https://tria.ge/reports/220422-hmgtwsffdn/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
ef6afcf6443963adffc7556a9ba1774d893dbcdabd7f5d5f30c84b5bd506a727
MD5 hash:
f025f14a9c8ac48339516a72957cefbb
SHA1 hash:
deed54683505f04574db49be27a5c020680f0c5d
Link:
https://www.unpac.me/results/7b0c285a-7f4c-4ea1-9728-c00736e3068b/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ef6afcf64439/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/ef6afcf6443963adffc7556a9ba1774d893dbcdabd7f5d5f30c84b5bd506a727

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research
Rule name:WhisperGateStage2
Create hunting rule
Author:Harish Kumar
Description:Yara Rule to Detect WhisperGateStage2

File information

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

Malspam

Formbook

rar c5c8180f00302bea214a09a4913701a9fd3a1858b8a309e378a29ef1f46b69b8

Formbook

Executable exe ef6afcf6443963adffc7556a9ba1774d893dbcdabd7f5d5f30c84b5bd506a727

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 c5c8180f00302bea214a09a4913701a9fd3a1858b8a309e378a29ef1f46b69b8
Cape
Cape
https://www.capesandbox.com/analysis/265642/
  
Dropped by
MD5 1a30e2b5c959cc9db8407752c534222f

Comments