MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514
SHA3-384 hash: c9bb91ed3107d3a1ae258ac9e1ca6458f0a1c15727ba12338c47ac3a250429e2b57015582f4bf7fe81e5f166256b568a
SHA1 hash: 5240cf37fb1799ae32d55ee681d53e9166199e56
MD5 hash: 40c9037d2d9cf0ccfd3e4761b732c173
humanhash: alaska-mockingbird-march-winter
File name:40c9037d2d9cf0ccfd3e4761b732c173.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:570'880 bytes
First seen:2021-10-12 10:14:35 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 12288:WwMsSBaQ2JWBWxqXV6VsgIapA+gHq+CRnCah2fvZT2bL:POBeJw7kVVM+g4FCG23t2
Threatray 10'348 similar samples on MalwareBazaar
TLSH T162C41201676FDE17C16E9AFD508126F383BA3A1542CAEF0ABFD075FB99433852B49502
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
152
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
40c9037d2d9cf0ccfd3e4761b732c173.exe
Verdict:
Suspicious activity
Analysis date:
2021-10-12 10:34:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/1d3da5d4-66ac-4e9c-884c-076f040e4138

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/196896/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/616560331c2d58ba74030122/reports/9e445093-4aad-44f6-988d-5a8b112d24a1/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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/95f6c30f-86ad-4d3e-9a62-16207789d3f4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/868540
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Self deletion via cmd delete
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 signatures2 2 Behavior Graph ID: 500969 Sample: wDzceoRPhB.exe Startdate: 12/10/2021 Architecture: WINDOWS Score: 100 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 7 other signatures 2->48 9 wDzceoRPhB.exe 3 2->9         started        process3 file4 26 C:\Users\user\AppData\...\wDzceoRPhB.exe.log, ASCII 9->26 dropped 50 Tries to detect virtualization through RDTSC time measurements 9->50 13 wDzceoRPhB.exe 9->13         started        signatures5 process6 signatures7 52 Modifies the context of a thread in another process (thread injection) 13->52 54 Maps a DLL or memory area into another process 13->54 56 Sample uses process hollowing technique 13->56 58 Queues an APC in another process (thread injection) 13->58 16 cscript.exe 13->16         started        19 explorer.exe 13->19 injected process8 dnsIp9 32 Self deletion via cmd delete 16->32 34 Modifies the context of a thread in another process (thread injection) 16->34 36 Maps a DLL or memory area into another process 16->36 38 Tries to detect virtualization through RDTSC time measurements 16->38 22 cmd.exe 1 16->22         started        28 www.artoidmode.com 64.190.62.111, 49816, 80 NBS11696US United States 19->28 30 www.vaughnmethod.com 208.91.197.27, 49821, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 19->30 40 System process connects to network (likely due to code injection or exploit) 19->40 signatures10 process11 process12 24 conhost.exe 22->24         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-12 10:15:13 UTC
AV detection:
18 of 28 (64.29%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
67cb5ce28fc7e9a5dae6c7be6da453844762fdea43d985cfc761c1ded66487f0
Formbook
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c
Formbook
972f5e016ffc306524d7083a5a5058ba8b5fc60f3db9f3c0915db59c0523a487
Formbook
9d503fba930fcf9724778a17659948875302b2fc7148c82779c29dfc18fb8cc3
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
daac858e9ca5b0c8044385c2d94cbef17c41b0bd5c569ad7e03f0a51b4caab7a
Formbook
db4d5bd36f923fdd47daf48ace971f47e9764d27a2f88241f09c754c042efc28
Formbook
f136f4f9c59c4ff2582063222c6df106a3d1e3d7d9220ff73e3cb2ec487fe1db
Formbook
+ 10'338 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:ed9s rat spyware stealer trojan
Link:
https://tria.ge/reports/211012-l99d7scaem/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.vaughnmethod.com/ed9s/
Unpacked files
SH256 hash:
74605ccb79176e2b2bd8795845f4c0dd5b9ff6a1344f3ff0bdb3ccdf9a17af56
MD5 hash:
eb9247aeab44b54422a0a0cc4adbe7c7
SHA1 hash:
2ff0478139920ab6dd4cf65530465f9fc702caa3
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/a5374534-16c8-4a4b-af6c-990e32a5ef63/
Parent samples :
972f5e016ffc306524d7083a5a5058ba8b5fc60f3db9f3c0915db59c0523a487
9d503fba930fcf9724778a17659948875302b2fc7148c82779c29dfc18fb8cc3
46ce2096cf4b2b0a2dfa386e25baa17078c270a469ae6704e36611fb7c67f908
76cd5f994be53f3f24e2b2018263b9ab582e84870ee8d24f38c6d11adae3688c
4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514
f13197aff6f530d9883aa1787cd57f4580c4c92bcaa5100f2641924c3e6867a5
SH256 hash:
fdcbecbd231b3000b780cb9c3f671135de2ac79b934006f25c25ddb95e6f7341
MD5 hash:
03be7103b466972fa0cce15197c63361
SHA1 hash:
6846b7cfafb5ccba6b67471e7c998abf2ee5f687
Link:
https://www.unpac.me/results/a5374534-16c8-4a4b-af6c-990e32a5ef63/
SH256 hash:
eda4d687b865aed0078ab87078de7d9722888b2d2af71c6fc0dcdc986ffb7567
MD5 hash:
12cf5402be16590c300b442a66e9ebc1
SHA1 hash:
0ea28394d301ca1ce840f039d2da62a5ce6d9334
Link:
https://www.unpac.me/results/a5374534-16c8-4a4b-af6c-990e32a5ef63/
SH256 hash:
4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514
MD5 hash:
40c9037d2d9cf0ccfd3e4761b732c173
SHA1 hash:
5240cf37fb1799ae32d55ee681d53e9166199e56
Link:
https://www.unpac.me/results/a5374534-16c8-4a4b-af6c-990e32a5ef63/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4a028b7f272d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514

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: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 4a028b7f272dd96c75716d2268b551576a01ebccaca97bb19da43ec21dbe8514

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/196896/
  
URLhaus
https://urlhaus.abuse.ch/url/1667253/
  
Delivery method
Distributed via web download

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