MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 20681f3c336f4f2956a4de98f0f01a77b87bade4a0d72d25386b5938d77be8a3. 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 4 File information Comments
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SHA256 hash: 20681f3c336f4f2956a4de98f0f01a77b87bade4a0d72d25386b5938d77be8a3
SHA3-384 hash: e560f384cb95f70f0cf83bd4029e7c56aca13c8d6b4dc86bfa49d91af8bd8c9a548c71f5d414411f89d5480133e88715
SHA1 hash: 36c928426e6e519abb3e211dc88a325baa396b7e
MD5 hash: ad8d126b1f9a76f6cd6deff2fc9c984d
humanhash: fruit-tango-william-stream
File name:PO_4987125644.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:555'520 bytes
First seen:2021-11-08 08:05:49 UTC
Last seen:2021-11-10 14:08:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'604 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:toqJFTPLd6qlGt1luWSu7Cc3dgkwggzQzzku7YrM:toql/sWct5hzzkPr
TLSH T13AC4CFB34102AEA9EE661FB85420ADB00EB77DA77F2DF255AD96746336F34C0D910C42
File icon (PE):PE icon
dhash icon 4815457511146c00 (10 x AgentTesla, 1 x Formbook)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
107
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/203175/
Detection(s):
SecuriteInfo.com.Trojan.YakbeexMSIL.ZZ4.5271.UNOFFICIAL
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Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6188da702084b424af0f4436/reports/d9a114e8-3bb4-4754-a978-2afffebc3988/overview
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.
Malware family:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b29c8da6-05ab-4026-a7a5-0ddfb4bc0f9c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/885050
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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 signatures2 2 Behavior Graph ID: 517508 Sample: PO_4987125644.exe Startdate: 08/11/2021 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 8 other signatures 2->42 10 PO_4987125644.exe 3 2->10         started        process3 file4 28 C:\Users\user\...\PO_4987125644.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 PO_4987125644.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 www.likewize-xl.com 17->30 32 www.directreport.net 17->32 34 parkingpage.namecheap.com 198.54.117.217, 49758, 80 NAMECHEAP-NETUS United States 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 help.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 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/20681f3c336f4f2956a4de98f0f01a77b87bade4a0d72d25386b5938d77be8a3/
Threat name:
Win32.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-11-08 08:06:08 UTC
AV detection:
20 of 45 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ebub6pbtn5hssvve32mpb4a2o64hxlpeudls2jjynnmtrv335crq._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:snr6 rat spyware stealer trojan
Link:
https://tria.ge/reports/211108-jze2habed2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.reynbetgirisi.com/snr6/
Unpacked files
SH256 hash:
a24b017645ad75f78552719251c33471c0a92f3cc19578db10b0ede79fb85556
MD5 hash:
ed4b0496fe05020acdf441fbaa04c7ae
SHA1 hash:
84ab04cd144a22b7f8e9e8d1a1c32d412857dc94
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/5511fe2f-940c-433f-abe8-d63d6c886999/
Parent samples :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 hash:
c99cbd09cddd6b076a557626e34095b3ab0e6b41db656579787e43d77525b0d8
MD5 hash:
bc4aeaecf58db46c56cf775fb7eb062e
SHA1 hash:
4274fef9ff9dd3f4d933f847f6dfb8840342a90b
Link:
https://www.unpac.me/results/5511fe2f-940c-433f-abe8-d63d6c886999/
SH256 hash:
dfe1e432108a38eeff3019fc77bd95b26b5bd0ded75640992365a4da1287e717
MD5 hash:
a206a10945cb2a98d9affb3b416355c5
SHA1 hash:
9590c43199ed166b5edd5cb77bd1a881c608e33a
Link:
https://www.unpac.me/results/5511fe2f-940c-433f-abe8-d63d6c886999/
SH256 hash:
43e38f251dbca9aa20f3470167e5427a7e7a7cdcd25f0b6b045ae8577cd3e345
MD5 hash:
f62ab5d3528d5a3b9e270ea1f9347868
SHA1 hash:
6a74e87711c615adbd9145f829a33f55b7e42dd6
Link:
https://www.unpac.me/results/5511fe2f-940c-433f-abe8-d63d6c886999/
SH256 hash:
20681f3c336f4f2956a4de98f0f01a77b87bade4a0d72d25386b5938d77be8a3
MD5 hash:
ad8d126b1f9a76f6cd6deff2fc9c984d
SHA1 hash:
36c928426e6e519abb3e211dc88a325baa396b7e
Link:
https://www.unpac.me/results/5511fe2f-940c-433f-abe8-d63d6c886999/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/20681f3c336f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.54
Link:
https://yomi.yoroi.company/submissions/20681f3c336f4f2956a4de98f0f01a77b87bade4a0d72d25386b5938d77be8a3

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_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
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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.

Malspam

Formbook

Executable exe 20681f3c336f4f2956a4de98f0f01a77b87bade4a0d72d25386b5938d77be8a3

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/203175/

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