MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e
SHA3-384 hash: 099ddc34d1d9fe9e7cc729ae737194ec0f854ad8fa42d423f8b259bf35847443b43f98ae87d87f086875170f7d28c999
SHA1 hash: 65587cf279f0ef4d7177a2570d8fd1ba348be33a
MD5 hash: 1fadb4180cec90e54c0ea48730c6d1f6
humanhash: south-autumn-pennsylvania-south
File name:S004212823122940,PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:614'400 bytes
First seen:2023-12-04 09:07:47 UTC
Last seen:2023-12-04 10:33:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:I45+po2jfLiGo/pYlHl8x46LO7xi5y22uJUUOPg3cNqS:L+pJ/W/a1l8x46Lkf22J4cNqS
TLSH T106D423ED31A95B91CC7E1BB6F094D65416BCB2813113EF832EE512CD6524B2B4BE072B
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)
File icon (PE):PE icon
dhash icon 23ccccfc3c6c2c17 (12 x Formbook, 8 x AgentTesla, 5 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
296
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/462268/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.59820.5273.16151.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/656d96f7380413dc0c2f86b3/reports/2202c708-61bb-4f5e-87b0-b22cb8a40b16/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e
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/aa81f36b-0ec9-427a-9069-43654f74b959
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1352983
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Deletes itself after installation
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1352983 Sample: S004212823122940,PDF.exe Startdate: 04/12/2023 Architecture: WINDOWS Score: 100 29 xbjcp1561.xbjcp1561.com 2->29 31 www.xbjuh.com 2->31 33 16 other IPs or domains 2->33 49 Multi AV Scanner detection for domain / URL 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Antivirus detection for URL or domain 2->53 55 7 other signatures 2->55 10 S004212823122940,PDF.exe 3 2->10         started        signatures3 process4 signatures5 59 Injects a PE file into a foreign processes 10->59 13 S004212823122940,PDF.exe 10->13         started        process6 signatures7 61 Maps a DLL or memory area into another process 13->61 63 Queues an APC in another process (thread injection) 13->63 16 wXCvHfcSOjsAtBYNWkRxxYy.exe 13->16 injected process8 process9 18 chkdsk.exe 13 16->18         started        signatures10 41 Tries to steal Mail credentials (via file / registry access) 18->41 43 Tries to harvest and steal browser information (history, passwords, etc) 18->43 45 Deletes itself after installation 18->45 47 4 other signatures 18->47 21 explorer.exe 7 1 18->21 injected 25 wXCvHfcSOjsAtBYNWkRxxYy.exe 18->25 injected 27 firefox.exe 18->27         started        process11 dnsIp12 35 www.tonyowendesign.com 156.234.202.34, 49732, 49733, 49734 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 21->35 37 cebede24.com 81.169.145.76, 49716, 49717, 49718 STRATOSTRATOAGDE Germany 21->37 39 8 other IPs or domains 21->39 57 System process connects to network (likely due to code injection or exploit) 21->57 signatures13
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2023-12-04 04:44:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
15 of 22 (68.18%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q4nctjnsbvktiic5c57mcwplngcodnkdwmown5osceedrzipxbxa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/231204-k3wdbsaa9w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
e2710c2d8d002b8156e112ed1c4281314c5d3114bbeaa769b68cf09633bf79c5
MD5 hash:
0b88c2cf6090c99d17dd5c98df86b2f9
SHA1 hash:
6484f6d9c0dc729ee79d40d84d60ec8b3439b4aa
Detections:
win_formbook_w0
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win_formbook_g0
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Link:
https://www.unpac.me/results/0ac8d5e2-e772-4d63-a2dd-2e9c9e167e35/
Parent samples :
6a5fb47fa51f3c9fda9c9b2646a5d0b7d35ea2447e1c144131f2819d49e73518
5762d46e91e94d731bb4f1047a3d080b27be1b34d05236e8c8f24b24238545fd
89c067236782e5c962ac5f4b18f76b962d9e4bd9e91c50871252380bb90e3a89
738bddac3a99456ddf5662b18a963a9b96f9353b826b15367d9aa21520ee0a59
ad88ebe85ec15202272324207b4d11133e9f52c076435ea45d181590bff8e179
e12bb875c395c4575c2482f653fd3005cc564a244e027f47218c99569c22ccf2
2379a4e1ccdd7849ad7ea9e11ee55b2052e58dda4628cd4e28c3378de503de23
ad75b282d723aca18196bbafaf8cce4901aa56b696967fd652fc163e1c0fc9ee
80bb6faabfb8cfdfc6f858a50b3893f0df49b414087619470cafce4ea26af74c
29747217bce30303d61906054f220ec42a5895938db61bf39d1b541db15ac47b
38687f648dac2391e0d3510baab25f8ae4272a41d2f378314a36a52362f7d442
cbf93b2bacf9e0aa11ff45a7b39541bf47da07574c778fee8a0a9e2ce21c5993
e72b90cdd75e9fcc56f6a017cb0b496ad0292bf4eb58d5f82ea51f98d7472e13
d07898b300b08a5bf93a6814e095476aa8ee8161e61a4d1a822640c69321b655
871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e
SH256 hash:
a415414e68d200b7ba63c49c7e6df646d04c5859b1aab6ce0393c505f8fc9b1c
MD5 hash:
a9a8418c823334769794df3c4d967962
SHA1 hash:
aa2e724493d4f57186c4fd0ae1bc20ce4406776b
Link:
https://www.unpac.me/results/0ac8d5e2-e772-4d63-a2dd-2e9c9e167e35/
SH256 hash:
43b2fc14985d739e6f7181c2f6723063d08406049de2ee05d442ddf8542e45a1
MD5 hash:
c45dd34cf47c233b1a5261dc4974a6c3
SHA1 hash:
99df2482760541fc9bd912535feb04dbf72cc756
Link:
https://www.unpac.me/results/0ac8d5e2-e772-4d63-a2dd-2e9c9e167e35/
SH256 hash:
519ada6d95b039f89c01ea31f8ac1fa64e5635fe190dd897992c3bb406da9912
MD5 hash:
5c664c67865d8f6da7d7f44fe4d4f33a
SHA1 hash:
537a8b5bfe2b84e9f58b6fcb26aa2fddef98b921
Link:
https://www.unpac.me/results/0ac8d5e2-e772-4d63-a2dd-2e9c9e167e35/
SH256 hash:
317ee0127ecda012ef9ad2dcebf80d0272f008a882f7ffe6a00498b3cd582d94
MD5 hash:
a6cf66e4bb705bdcf7af505d691a951f
SHA1 hash:
060327648e0f2a6fd2973d628c7e22bc33b1a4be
Link:
https://www.unpac.me/results/0ac8d5e2-e772-4d63-a2dd-2e9c9e167e35/
SH256 hash:
871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e
MD5 hash:
1fadb4180cec90e54c0ea48730c6d1f6
SHA1 hash:
65587cf279f0ef4d7177a2570d8fd1ba348be33a
Link:
https://www.unpac.me/results/0ac8d5e2-e772-4d63-a2dd-2e9c9e167e35/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/871a29a5b20d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.87
Link:
https://yomi.yoroi.company/submissions/871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e

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:NET
Create hunting rule
Author:malware-lu
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 871a29a5b20d5534205d177ec159eb6984e1b543b31d66f5d2110838e50fb86e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/462268/

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