MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f. 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: 18


Intelligence 18 IOCs YARA 7 File information Comments
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SHA256 hash: a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f
SHA3-384 hash: b9aa98c7e39977d73055487c2055f30b2fc428eb84f50659fe42a86e3e3f4b52af0e0b273e448acfeb72641345b64834
SHA1 hash: fdf4d0243984fd21f9b6e119d65d42daa105b3a7
MD5 hash: 52f47f35616ad4633470e06b3faf9e60
humanhash: wisconsin-bravo-single-cola
File name:GdW7Ha20ohjbzXg.exe
Download: download sample
Signature Formbook
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File size:630'272 bytes
First seen:2024-09-11 12:20:06 UTC
Last seen:2024-09-11 13:29:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:2p7kvDoQSUCHgdLdHi7UaYdREb2WJCXudsrlkVZBqIgikrwGK:2poe9HgdLsUaYdREyWMXudOlk75gtr
TLSH T127D42359B3FD67A2ED7B0BF144A04A2013B4B0276A51D61C5CCA14DEAFF3F64869078B
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon 70983a848494a0e0 (6 x Formbook, 4 x AgentTesla, 2 x SnakeKeylogger)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
391
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
GdW7Ha20ohjbzXg.exe
Verdict:
Malicious activity
Analysis date:
2024-09-11 12:21:01 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/26eea918-becf-4669-a740-93f5e144f3dc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3053.17099.497.UNOFFICIAL
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Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e18b3076bc4542b0496c44
Tags:
Stealth Swotter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
explorer lolbin packed
Link:
https://www.filescan.io/uploads/66e18b2f8bdeb2969e1aa69f/reports/2a994817-d2c5-4631-822f-20fa55ebc34a/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f
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:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7299ea4c-6d2b-4b86-b513-6726198aee18
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1509334
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
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)
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
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1509334 Sample: GdW7Ha20ohjbzXg.exe Startdate: 11/09/2024 Architecture: WINDOWS Score: 100 29 www.ovepepe.xyz 2->29 31 www.ookoutcapstone.xyz 2->31 33 9 other IPs or domains 2->33 35 Found malware configuration 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Multi AV Scanner detection for submitted file 2->39 43 8 other signatures 2->43 11 GdW7Ha20ohjbzXg.exe 3 2->11         started        signatures3 41 Performs DNS queries to domains with low reputation 31->41 process4 file5 27 C:\Users\user\...behaviorgraphdW7Ha20ohjbzXg.exe.log, ASCII 11->27 dropped 53 Tries to detect virtualization through RDTSC time measurements 11->53 55 Injects a PE file into a foreign processes 11->55 57 Switches to a custom stack to bypass stack traces 11->57 15 GdW7Ha20ohjbzXg.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 2 other signatures 15->65 18 explorer.exe 96 1 15->18 injected process9 process10 20 systray.exe 18->20         started        signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 51 Switches to a custom stack to bypass stack traces 20->51 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f/
Threat name:
ByteCode-MSIL.Trojan.SnakeLogger
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Status:
Malicious
First seen:
2024-09-11 08:35:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vb5xadazcbebnfm27wqju5tt25mkeetb2ql4ctjauiecqdxdhbpq._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:d16h discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240911-pjbl2azhmg/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/bd2a91f5-02cf-4b40-b073-68b2985767bd
Unpacked files
SH256 hash:
4cd17fb56e2098be919e5190aad403b0ef40eb3df5ea756d3e50c0706aa230ce
MD5 hash:
b364aa1dd34d1fe2d21b5f4e8018a300
SHA1 hash:
3ce021f11b4b0166c1e7d7873f7a1e3988b6f4d9
Detections:
FormBook
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win_formbook_g0
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win_formbook_auto
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win_formbook_w0
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Formbook
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Link:
https://www.unpac.me/results/a0a3909b-4dfc-4e3b-8161-8909adc9bf48/
Parent samples :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 hash:
561a95557c6071b4324d86e3d0054962425467be965a5dcdce4e028306ea2947
MD5 hash:
6913e82d84b787b90e0596d2da5971ef
SHA1 hash:
2e93cdc2633111bf967fac2b47c36e04c3fdc8bc
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
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SUSP_OBF_NET_Reactor_Indicators_Jan24
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Link:
https://www.unpac.me/results/a0a3909b-4dfc-4e3b-8161-8909adc9bf48/
SH256 hash:
c59a72e874640d2d2c5669edc14fdeb82a72cbacde61679907d2926b8ed79d08
MD5 hash:
b37fc99b846edbde0d0f36bee1760849
SHA1 hash:
0016396b048dcbda5b87742c32678f706db6362c
Link:
https://www.unpac.me/results/a0a3909b-4dfc-4e3b-8161-8909adc9bf48/
SH256 hash:
a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f
MD5 hash:
52f47f35616ad4633470e06b3faf9e60
SHA1 hash:
fdf4d0243984fd21f9b6e119d65d42daa105b3a7
Link:
https://www.unpac.me/results/a0a3909b-4dfc-4e3b-8161-8909adc9bf48/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a87b700c1910/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/a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f

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:AgentTesla_DIFF_Common_Strings_01
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Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:Detect_PowerShell_Obfuscation
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Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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