MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667. 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: 12


Intelligence 12 IOCs YARA 22 File information Comments
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SHA256 hash: f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667
SHA3-384 hash: d7849a510850403931b38bc55197634b8ac686ab8ad0f5204d6e03c2f64a4f7e643f7667d2ea42c3c30a976df5d5ce99
SHA1 hash: 6e2a3dd1e72cc56a271686c993df7ef006f536bd
MD5 hash: 901e77a444b0ed7bae45ade796e4f2f7
humanhash: steak-spaghetti-oscar-arkansas
File name:PO13261 & 13241.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:814'592 bytes
First seen:2024-02-05 08:33:09 UTC
Last seen:2024-02-15 11:02:30 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:YV68yq0N4Cg0b7V4l7fCaUPxlAgnt26lD2D/9cx:YVsqCpbJMPUPxeitR2D/
TLSH T1BD052242B86C2F51C4BF4FFA19E0A147DB7496629813FE5D8C8A70D6A027F544B13B1B
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)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
278
Origin country :
HU HU
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/474629/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65c09d7ca858ab3d210a4198/reports/f9dc248e-17a2-45cd-9021-d01f2ea0a966/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667
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:
MSIL Injector
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ece121df-da28-4bd6-923d-42cc7ffbeac6
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1386597
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
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
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1386597 Sample: PO13261_&_13241.exe Startdate: 05/02/2024 Architecture: WINDOWS Score: 100 26 Malicious sample detected (through community Yara rule) 2->26 28 Multi AV Scanner detection for submitted file 2->28 30 Yara detected FormBook 2->30 32 5 other signatures 2->32 9 PO13261_&_13241.exe 4 2->9         started        process3 signatures4 36 Adds a directory exclusion to Windows Defender 9->36 38 Injects a PE file into a foreign processes 9->38 12 PO13261_&_13241.exe 9->12         started        15 powershell.exe 7 9->15         started        process5 signatures6 40 Maps a DLL or memory area into another process 12->40 17 ftzLMLNAftCTpnfwTCiCMXZ.exe 12->17 injected 19 conhost.exe 15->19         started        process7 process8 21 mtstocom.exe 17->21         started        signatures9 34 Maps a DLL or memory area into another process 21->34 24 explorer.exe 54 1 21->24 injected process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667/
Threat name:
ByteCode-MSIL.Trojan.Remcos
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Status:
Malicious
First seen:
2024-02-05 07:46:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6waqsuf2rolv6vqaphiixjb6h2mbykpbadjk3g6ocjs6xckt4ztq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240205-kggcaadgfk/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
20f2f841c46f6e33b86869b57b346d854027a761f27cf3e9588fc6b914c47226
MD5 hash:
11ff99a10482e4e16744edc1f95d7696
SHA1 hash:
fe01595d44561b7b0f3092aa1123fb9927923895
Link:
https://www.unpac.me/results/74a1a2c8-1fcd-4c6d-9840-4184367328f8/
SH256 hash:
381144da05e03d47374dcf876b961aa8f8f9e10d7d901a894b2dcd78a74f1afe
MD5 hash:
75830b01c1bd70d147bf33df867c4b1c
SHA1 hash:
579289808ecc8b370a64ce7c98364ac75faac069
Link:
https://www.unpac.me/results/74a1a2c8-1fcd-4c6d-9840-4184367328f8/
SH256 hash:
68758b0adfadd76fa937ef0e7270ce2462c2398826fe4820a22796571ae9b916
MD5 hash:
88803ae0af11271a5dac6c8721164c7a
SHA1 hash:
d92a123f747943f5056fc7a145fbe2d71f53140b
Link:
https://www.unpac.me/results/74a1a2c8-1fcd-4c6d-9840-4184367328f8/
SH256 hash:
0d2279d207c169d05d85b184adb471d2d9c90e70a77648032fdea7b9f494fb4e
MD5 hash:
2447a7b6d16a5d9813d0fe239b41b6d3
SHA1 hash:
84576f80d2e0064279cbbf0f60d54a118ee3bb6b
Link:
https://www.unpac.me/results/74a1a2c8-1fcd-4c6d-9840-4184367328f8/
SH256 hash:
23fc000c918e65519a33db7fe8eee9e9288262bf3069019647720c61f540ad20
MD5 hash:
6e2c951b2c774dd48f1d8fb6a61ad940
SHA1 hash:
39a3200efd05c31d0b21efa87549f5fe88f0d6d4
Link:
https://www.unpac.me/results/74a1a2c8-1fcd-4c6d-9840-4184367328f8/
SH256 hash:
f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667
MD5 hash:
901e77a444b0ed7bae45ade796e4f2f7
SHA1 hash:
6e2a3dd1e72cc56a271686c993df7ef006f536bd
Link:
https://www.unpac.me/results/74a1a2c8-1fcd-4c6d-9840-4184367328f8/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f5810950ba8b/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/f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667

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
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:DebuggerCheck__GlobalFlags
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
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Author:malware-lu
Rule name:pe_imphash
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Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
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Author:nex
Description:Matched shellcode byte patterns
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe f5810950ba8b975f560079d08ba43e3e981c29e100d2ad9bce1265eb8953e667

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/474629/

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