MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8b21296f1e5a2a76078e41a0ed2479e7c3e1ad03df9117008074716da7b84a9. 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: b8b21296f1e5a2a76078e41a0ed2479e7c3e1ad03df9117008074716da7b84a9
SHA3-384 hash: 14b87032e3fb496863d268d0e73c0f925acb4f7a532f3c383d4528bd211fe6abd716da6b12caf2d190069573d7e104b2
SHA1 hash: 51b664bee97d203de5fb8426dcd3f1ee37d00327
MD5 hash: 557a6d60c092c15eb295146dff7c8537
humanhash: november-twenty-crazy-spring
File name:PO # 2621.img.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:638'976 bytes
First seen:2022-07-12 15:18:26 UTC
Last seen:2022-07-12 15:40:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'819 x AgentTesla, 19'743 x Formbook, 12'286 x SnakeKeylogger)
ssdeep 12288:2rG1ZrR06UDNXWr895LTqYzKiniO+ChybnDh5o/JDlt:2m1hEWriHqs/niO++ybA
Threatray 13'508 similar samples on MalwareBazaar
TLSH T164D412693B88D533CA6E47B96961C0082731FC163A66EB68FE4775ED5BB13134887183
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)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
343
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
PO # 2621.img.exe
Verdict:
Malicious activity
Analysis date:
2022-07-12 16:44:04 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/78432f9b-b5c2-4022-98f6-cb2fee2ff876

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/286631/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1429.27087.2416.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook packed
Link:
https://www.filescan.io/uploads/62cd90e8bbcf6baf27974408/reports/a3f0f141-7c6d-4819-b36d-0c2ef8747d60/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b5ac2336-802a-41a6-a286-5b9b78c594e6
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1029560
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 662054 Sample: PO # 2621.img.exe Startdate: 12/07/2022 Architecture: WINDOWS Score: 100 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 Multi AV Scanner detection for dropped file 2->49 51 11 other signatures 2->51 10 PO # 2621.img.exe 7 2->10         started        process3 file4 37 C:\Users\user\AppData\Roaming\ahkcpCQ.exe, PE32 10->37 dropped 39 C:\Users\user\...\ahkcpCQ.exe:Zone.Identifier, ASCII 10->39 dropped 41 C:\Users\user\AppData\Local\...\tmpE50B.tmp, XML 10->41 dropped 43 C:\Users\user\...\PO # 2621.img.exe.log, ASCII 10->43 dropped 55 Adds a directory exclusion to Windows Defender 10->55 57 Injects a PE file into a foreign processes 10->57 14 PO # 2621.img.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 65 Modifies the context of a thread in another process (thread injection) 14->65 67 Maps a DLL or memory area into another process 14->67 69 Sample uses process hollowing technique 14->69 71 Queues an APC in another process (thread injection) 14->71 21 explorer.exe 14->21 injected 24 conhost.exe 17->24         started        26 conhost.exe 19->26         started        process8 signatures9 53 Uses ipconfig to lookup or modify the Windows network settings 21->53 28 ipconfig.exe 21->28         started        process10 signatures11 59 Modifies the context of a thread in another process (thread injection) 28->59 61 Maps a DLL or memory area into another process 28->61 63 Tries to detect virtualization through RDTSC time measurements 28->63 31 cmd.exe 1 28->31         started        33 explorer.exe 82 28->33         started        process12 process13 35 conhost.exe 31->35         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b8b21296f1e5a2a76078e41a0ed2479e7c3e1ad03df9117008074716da7b84a9/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-07-12 13:27:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xczbffxr4wrkoydy4qna5ushtz6d4gwqhx4rc4aia5drnwt3qsuq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
18ce13c9dc11ab8d14b603076b0d6f3141dd415314be89264c8ff742f01a13a1
Formbook
222d2655d99a782d72516b4da9729eeca5ebdae3a9ae1634955f127b26e7f9d6
Formbook
2c8ad786124803779069fe980f60cc2ebd09ac840413194a24a143c8c4a81105
Formbook
35ddf428695769bb87459e0848cfae7eb62a86c91c8bb33a2caa23c5fbc43b73
Formbook
4ece28a4229d41e763203acb8c66af294e5461b01de2c4e25daddab193dfe554
Formbook
5fd380b77aed19d5086ee0c5afb1a717b0901bcf456ef658c0381107e47f17a1
Formbook
7fd0e394a9d74592a74d04b3dccf2dcf8457d0e894cadadbf999c327e9b3940e
Formbook
e87d10354cac12ec322ce8ac5f24b7df6e207d587a57e69c88c08babb6b0744e
Formbook
f6db3a2b3160b40742b164c6bbe0496368f4fc52d1a16757a49d023f5189b428
Formbook
+ 13'498 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat suricata
Link:
https://tria.ge/reports/220712-sp6k5sadg4/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Blocklisted process makes network request
Xloader payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
1ee004106780dd9bb226abcdcb28643be445382e49b81252becabc79e3782d6d
MD5 hash:
b229464c9206ceb788bca7cd11454dd2
SHA1 hash:
50f3ae6dafcf06ea7cf8f97771a1de1479b2b223
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/d9176bae-278a-4fed-8c78-9d3f1d756a30/
SH256 hash:
a9a0f6abc4fd10fab1c6033da7deaa62b9a822f4b8b83162d50460cf682bb5cb
MD5 hash:
186040559c2dd2d3a7db8d94b8a8c877
SHA1 hash:
e19a4a4117c7e6a97ae10bc23bda7b0a0f506547
Link:
https://www.unpac.me/results/d9176bae-278a-4fed-8c78-9d3f1d756a30/
SH256 hash:
70bb4f8aa7d0a33f8206f78c845fa2bd686c2a0f2b3bd50cd0b6b887a45398ca
MD5 hash:
30d61a3a3e26c2bca2eb766990132d7c
SHA1 hash:
94f9742d5f21b13f7d8d194fe938193cbb6a0d4d
Link:
https://www.unpac.me/results/d9176bae-278a-4fed-8c78-9d3f1d756a30/
SH256 hash:
3b59fe180dd50e3f3d4fdcbdd4e7a2d4e3e1c85ae43cb4f3716c4be41e9ec2ae
MD5 hash:
9ea556e333e216a65aa09c102f36004f
SHA1 hash:
814c07f1dc68bd61840384aac3aa8346d9f8148f
Link:
https://www.unpac.me/results/d9176bae-278a-4fed-8c78-9d3f1d756a30/
SH256 hash:
ee0d1cdf70b4008fa562f1511f7178e5bf6e7c1d82624640381947d750518cb0
MD5 hash:
500b97f4fdbcf29e4ca4e2f01149e196
SHA1 hash:
4d8809e509362835ff2d2306f7d5dbbebbc972bc
Link:
https://www.unpac.me/results/d9176bae-278a-4fed-8c78-9d3f1d756a30/
SH256 hash:
b8b21296f1e5a2a76078e41a0ed2479e7c3e1ad03df9117008074716da7b84a9
MD5 hash:
557a6d60c092c15eb295146dff7c8537
SHA1 hash:
51b664bee97d203de5fb8426dcd3f1ee37d00327
Link:
https://www.unpac.me/results/d9176bae-278a-4fed-8c78-9d3f1d756a30/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b8b21296f1e5/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b8b21296f1e5a2a76078e41a0ed2479e7c3e1ad03df9117008074716da7b84a9

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 b8b21296f1e5a2a76078e41a0ed2479e7c3e1ad03df9117008074716da7b84a9

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/286631/

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