MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5d921e0f8d51e9bfb643766df1ec884d787d2fb16d7f78a136edc801b1eeca1. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments
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SHA256 hash: b5d921e0f8d51e9bfb643766df1ec884d787d2fb16d7f78a136edc801b1eeca1
SHA3-384 hash: 25f1c37c968139d4af3e2b8da5fc8ff3e4df019187657e5f11b25ca8d491f49766728ce2c2311dc7eae2de7435387770
SHA1 hash: 405912a1d65058ad7ff48b670b051fd89013200d
MD5 hash: 359f9c95393b7006bf33e65bd7931756
humanhash: angel-fifteen-sierra-jersey
File name:More Details.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:592'896 bytes
First seen:2023-07-13 07:43:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:dPK0gp6JD23pXMfs/D712Q9lDIP6tTwAWyweDli1hLGs:9KjIGpIsXoQzkSZWWxi19G
TLSH T182C423499E5A0776C66B8BB4B4A97330537DC4D23E33E7570E0279ADDE2370245A2B03
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
256
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
More Details.exe
Verdict:
Malicious activity
Analysis date:
2023-07-13 07:56:39 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/79662a56-bbd1-4dbd-9a4f-1f5d5b1e33cd

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/417293/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.68117966.2266.30870.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Restart of the analyzed sample
Launching cmd.exe command interpreter
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook packed
Link:
https://www.filescan.io/uploads/64afab12057bff26cf236665/reports/ad2f4d2a-383d-4176-ae64-39351119fa6e/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b5d921e0f8d51e9bfb643766df1ec884d787d2fb16d7f78a136edc801b1eeca1
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/66a067a9-355a-488b-87fc-712a85437d4e
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1272326
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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 dropped file
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
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1272326 Sample: More_Details.exe Startdate: 13/07/2023 Architecture: WINDOWS Score: 100 55 www.pyy78.top 2->55 71 Snort IDS alert for network traffic 2->71 73 Found malware configuration 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 8 other signatures 2->77 11 More_Details.exe 7 2->11         started        15 RstWJecssP.exe 5 2->15         started        signatures3 process4 file5 47 C:\Users\user\AppData\...\RstWJecssP.exe, PE32 11->47 dropped 49 C:\Users\...\RstWJecssP.exe:Zone.Identifier, ASCII 11->49 dropped 51 C:\Users\user\AppData\Local\Temp\tmp9F4.tmp, XML 11->51 dropped 53 C:\Users\user\...\More_Details.exe.log, ASCII 11->53 dropped 85 Uses schtasks.exe or at.exe to add and modify task schedules 11->85 87 Adds a directory exclusion to Windows Defender 11->87 89 Tries to detect virtualization through RDTSC time measurements 11->89 17 More_Details.exe 11->17         started        20 powershell.exe 19 11->20         started        22 schtasks.exe 1 11->22         started        91 Antivirus detection for dropped file 15->91 93 Multi AV Scanner detection for dropped file 15->93 24 RstWJecssP.exe 15->24         started        26 schtasks.exe 1 15->26         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 17->63 65 Maps a DLL or memory area into another process 17->65 67 Sample uses process hollowing technique 17->67 69 Queues an APC in another process (thread injection) 17->69 28 explorer.exe 2 1 17->28 injected 32 conhost.exe 20->32         started        34 conhost.exe 22->34         started        36 conhost.exe 26->36         started        process9 dnsIp10 57 govwiki.xyz 165.140.69.202, 49693, 80 WISCNET1-ASUS Reserved 28->57 59 kamado-lando.com 95.169.188.200, 49694, 80 KEYWEB-ASDE Germany 28->59 61 3 other IPs or domains 28->61 95 System process connects to network (likely due to code injection or exploit) 28->95 97 Performs DNS queries to domains with low reputation 28->97 38 msdt.exe 28->38         started        41 help.exe 28->41         started        signatures11 process12 signatures13 79 Modifies the context of a thread in another process (thread injection) 38->79 81 Maps a DLL or memory area into another process 38->81 83 Tries to detect virtualization through RDTSC time measurements 38->83 43 cmd.exe 1 38->43         started        process14 process15 45 conhost.exe 43->45         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b5d921e0f8d51e9bfb643766df1ec884d787d2fb16d7f78a136edc801b1eeca1/
Threat name:
Win32.Trojan.Leonem
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Status:
Malicious
First seen:
2023-07-11 16:58:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wxmsdyhy2upjx63eg5tn6hwiqtlypux3c3l7pcqtn3oiagy65sqq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:sh24 rat spyware stealer trojan
Link:
https://tria.ge/reports/230713-jkahgafg37/
Behaviour
Creates scheduled task(s)
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
Checks computer location settings
Deletes itself
Formbook payload
Formbook
Unpacked files
SH256 hash:
395b81edf3e5ee6f6d18e7394d0e22c1f43036ce5ebe890375fc9c5b58f212a7
MD5 hash:
c97de94c51a2da205cfca5385171861a
SHA1 hash:
f69ddf1004d5e241dc37443e2cd23e0a9c5e548b
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/9b96d0e0-5e98-4ac5-8b76-683905cb9c9e/
SH256 hash:
213d633226ca835bb91842d992c78fd0c7feb53978d990b57b9abe8d547af400
MD5 hash:
1af7f66c9ceb94d0b0df676d6e5e0253
SHA1 hash:
bcfef2955270b6ad791de0a2bde05d80c0d8aa42
Link:
https://www.unpac.me/results/9b96d0e0-5e98-4ac5-8b76-683905cb9c9e/
SH256 hash:
53f2ad060cf771aa4f197df5789cee95959480c244a0b392bb450c8ce7311d77
MD5 hash:
37e82d3e2864e27b34f5fbacaea759c3
SHA1 hash:
a87024a466e052bff09a170bb8c6f374f6c84c32
Link:
https://www.unpac.me/results/9b96d0e0-5e98-4ac5-8b76-683905cb9c9e/
SH256 hash:
3e24c77fe108059f14fe61b8400c5fe023dc2b0ec7c4fe23fa9911681086f7a9
MD5 hash:
a5228b97b33467ac41fac5cac2718252
SHA1 hash:
28bb020c8a53b046fc8e8106f2913e62c5941a0d
Link:
https://www.unpac.me/results/9b96d0e0-5e98-4ac5-8b76-683905cb9c9e/
SH256 hash:
b5d921e0f8d51e9bfb643766df1ec884d787d2fb16d7f78a136edc801b1eeca1
MD5 hash:
359f9c95393b7006bf33e65bd7931756
SHA1 hash:
405912a1d65058ad7ff48b670b051fd89013200d
Link:
https://www.unpac.me/results/9b96d0e0-5e98-4ac5-8b76-683905cb9c9e/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b5d921e0f8d5/report/overview.html
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
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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 b5d921e0f8d51e9bfb643766df1ec884d787d2fb16d7f78a136edc801b1eeca1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/417293/

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