MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 15c7c3c6fdf2a32c77d61b021fec1c2d8624a621a906efbf22a5132e1daf14c0. 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 1 File information Comments
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SHA256 hash: 15c7c3c6fdf2a32c77d61b021fec1c2d8624a621a906efbf22a5132e1daf14c0
SHA3-384 hash: dba3eb068eef458f974197b2e6326193f6ff3f57bb3019e4108baf037bbd398390a0324ed1eb09d8a5c1f8b6d89dcd41
SHA1 hash: 2cfb5cf64006a8d1a45696ef8054e64d134f5055
MD5 hash: d2b96b67d34a817a8235c439c9da1d2f
humanhash: grey-lion-ten-tennis
File name:eInvoice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:936'960 bytes
First seen:2021-02-22 13:03:42 UTC
Last seen:2021-02-26 00:02:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:9GECgG0PiTq1Fzr0/6tKUpU2WC+Qz5sl:q50pg8ZypQO
TLSH 00159D126B88DFACE07EA3355024960E9BF5B512E329DD4F7DD620EF0D61F818761A23
Reporter GovCERT_CH
Tags:FormBook

Intelligence

File Origin
# of uploads :
11
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/118325/
Detection(s):
SecuriteInfo.com.Variant.Bulz.367923.5363.30211.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/614093
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
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 AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 356053 Sample: eInvoice.exe Startdate: 22/02/2021 Architecture: WINDOWS Score: 100 34 www.yuelvzuche.com 2->34 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 8 other signatures 2->44 11 eInvoice.exe 3 2->11         started        signatures3 process4 signatures5 52 Tries to detect virtualization through RDTSC time measurements 11->52 14 eInvoice.exe 11->14         started        process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 28 198.54.117.211, 49735, 80 NAMECHEAP-NETUS United States 17->28 30 cyberxchange.net 34.102.136.180, 49737, 80 GOOGLEUS United States 17->30 32 4 other IPs or domains 17->32 36 System process connects to network (likely due to code injection or exploit) 17->36 21 control.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 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/15c7c3c6fdf2a32c77d61b021fec1c2d8624a621a906efbf22a5132e1daf14c0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-22 13:04:14 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cxd4hrx56krsy56wdmbb73a4fwdcjjrbvedo7pzcuujs4hnpctaa._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210222-pka9gzz8ns/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.workonlinetimallen.com/dll/
Unpacked files
SH256 hash:
e624003658c4f8b349f567c82229fd15d1e63d3d20fe6f7b4388403038cd2a44
MD5 hash:
b6ce7c1d81b9271eab825ea63de154c3
SHA1 hash:
0e7b89555314f8908c1098b652c9bf50e5ecc27b
Link:
https://www.unpac.me/results/f741acd1-07a3-4dc2-9df4-e653cc8f9f92/
SH256 hash:
15c7c3c6fdf2a32c77d61b021fec1c2d8624a621a906efbf22a5132e1daf14c0
MD5 hash:
d2b96b67d34a817a8235c439c9da1d2f
SHA1 hash:
2cfb5cf64006a8d1a45696ef8054e64d134f5055
Link:
https://www.unpac.me/results/f741acd1-07a3-4dc2-9df4-e653cc8f9f92/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/15c7c3c6fdf2a32c77d61b021fec1c2d8624a621a906efbf22a5132e1daf14c0

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_InTheFu
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Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

Formbook

ace a021629c8a363873204c887c319cfeb9202ac5a762039910999a632483fd6be2

Formbook

Executable exe 15c7c3c6fdf2a32c77d61b021fec1c2d8624a621a906efbf22a5132e1daf14c0

(this sample)

  
Dropped by
MD5 50de1045941d9ff6726c898cc0ecd926
  
Dropped by
SHA256 a021629c8a363873204c887c319cfeb9202ac5a762039910999a632483fd6be2
  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/118325/

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