MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
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SHA256 hash: 41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2
SHA3-384 hash: 57993d546a4d2a2ec4dd3bde2b3d8086b56a31b2f3c998424f612cb1c4d380613013b1dbdbc4215e00405471fe0de530
SHA1 hash: 902fc7c03eb33119d113c1564fd878dbe17bc7cd
MD5 hash: 0d2bc38920c4d006db1433f55e3847ce
humanhash: nevada-nebraska-sad-quebec
File name:PO#CR21-1178321.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'086'976 bytes
First seen:2022-03-28 05:18:08 UTC
Last seen:2022-03-28 12:54:57 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 24576:GAHwz5sgycg0sOYUHcS5GgTniFYKT2Cb6zh+iT:GVgyYUHPxLKTXb6zh+O
Threatray 10'640 similar samples on MalwareBazaar
TLSH T12F351262F34E9741D54E8BBA4462D5A10373BB9A592FC90D7CB5320E89323C35712EAF
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
205
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/258319/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.22833.21622.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
coinminer control.exe obfuscated packed replace.exe wacatac
Link:
https://www.filescan.io/uploads/624145479253b276b78c11d7/reports/4f9dfa76-641c-435b-84e7-233ee38050f6/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/482fa25f-cbed-4400-96a6-cb9860c6811e
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/965489
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.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
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
Self deletion via cmd delete
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
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: 597966 Sample: PO#CR21-1178321.exe Startdate: 28/03/2022 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 12 other signatures 2->50 10 PO#CR21-1178321.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\...\RwuzHTHZVeG.exe, PE32 10->36 dropped 38 C:\Users\...\RwuzHTHZVeG.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\Local\...\tmp141A.tmp, XML 10->40 dropped 42 C:\Users\user\...\PO#CR21-1178321.exe.log, ASCII 10->42 dropped 52 Uses schtasks.exe or at.exe to add and modify task schedules 10->52 54 Adds a directory exclusion to Windows Defender 10->54 56 Tries to detect virtualization through RDTSC time measurements 10->56 58 Injects a PE file into a foreign processes 10->58 14 PO#CR21-1178321.exe 10->14         started        17 powershell.exe 24 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 68 Modifies the context of a thread in another process (thread injection) 14->68 70 Maps a DLL or memory area into another process 14->70 72 Sample uses process hollowing technique 14->72 74 Queues an APC in another process (thread injection) 14->74 21 explorer.exe 14->21 injected 23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        process8 process9 27 cmd.exe 21->27         started        signatures10 60 Self deletion via cmd delete 27->60 62 Modifies the context of a thread in another process (thread injection) 27->62 64 Maps a DLL or memory area into another process 27->64 66 Tries to detect virtualization through RDTSC time measurements 27->66 30 cmd.exe 1 27->30         started        32 explorer.exe 125 27->32         started        process11 process12 34 conhost.exe 30->34         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-03-28 05:19:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
29
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=iflt2eccmotsp3ffffonlg7zdsj5fisn3mbe3bhzojclyeqag3ra._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3e3ccb3b130c86bb2d82a52f8a7e191efa9499577ba0a3d3f335d5a1e1597b76
Formbook
44fcbf4b6194a2835b5193606c9ad3ac9aa62b3fe6f724201f8b8edfd3b24076
Formbook
9cfa1deda62a35bf8c2211bf4c1996d880c84c4242308a5d74403a570d70e066
Formbook
9f085df3f1da75ba799ca984603fe267f891be8e6ac24c52b907cc97e6879467
Formbook
bc91c7988916b582c31a55f44cbdebcfae416c3f645bf8826485fc358e0ac0e7
Formbook
de9fdb344c542595de3ddf65357a6982f0085d0f7b42c1de534c3963134c2cb3
Formbook
e073516efee850dda1e008bcd82c3160cb867dda001bec42d76f6aa6af82a257
Formbook
eabfcd738bc46581870a5671823ed4dda66a507606187b0f2a25a3b0f1fa9720
Formbook
f199872c7181357c0f97b1c5415251a41b0588af401461f319fafe94b2ed4653
Formbook
+ 10'630 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:o0i7 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220328-fztywacfen/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
0dd9623e53597656bf225ec182197137b77b54f475f386f57b563ea9d2f7d243
MD5 hash:
d81057c81549d2d721394f92d36dc407
SHA1 hash:
77405f30b5b7a678b2f23b65ee5805c5e31ae031
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0b97dfdd-615c-4125-9dd8-6ce6354220e3/
Parent samples :
633caade7dd7f37b7795be2142a7f0ef66259b65b1095b23a2070f02446f8414
e92ff5ee8d681a705f2fe24cd61375479b2221cf29738439839ce8ee5f3f9c5f
41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2
81626ff8f2f5eb89a55ac197d51ab0d35c33e0607c9fd2a7077ac834a1a5c926
6b9529ef9582e73d4ac7bc63d46bd152a1bc894ce781308b8798ea9689312e60
0082123fa15fb43d060c2f764bdd9f31a19e53b185e5f6de37d1dfec2f59504f
91bde3e248b2850a4c78027106d8b4c0b6ba2604fd08a0a14fb45b8a1b285611
ca7d37a30904725a82277567c30ba0fe5b441dad6d86d48afc3a954e8fdbd78f
044dd751a59cd849c84966a8ec5a6f65435cbd39af7696029a3ef2583819d1f4
SH256 hash:
dc5c057b0ee1eb079cf189762aac69f0d86338ea18795dc4fbf7ed9b5a45c2eb
MD5 hash:
4103ed94f4747b30e166cf3c25416f47
SHA1 hash:
d553a67056e94f60d621ca42dcecd6d93f9ef1ad
Link:
https://www.unpac.me/results/0b97dfdd-615c-4125-9dd8-6ce6354220e3/
SH256 hash:
7d085ed00af108136c33096dd39c0f59fc42e05184be983aa7fe221c85f6bd9a
MD5 hash:
40d148f855395be6af4f5cf196170fa4
SHA1 hash:
759cbb181789634a647c1399d33a629075dc7fb2
Link:
https://www.unpac.me/results/0b97dfdd-615c-4125-9dd8-6ce6354220e3/
SH256 hash:
b6795be4122035b571f93213009390b8ee7f5cf7427b21b1e2c779e114e27068
MD5 hash:
76b95322dfa37e29e4394613dcd623b6
SHA1 hash:
11fb0aa31b359222bfddceae081304ebf6582f15
Link:
https://www.unpac.me/results/0b97dfdd-615c-4125-9dd8-6ce6354220e3/
SH256 hash:
41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2
MD5 hash:
0d2bc38920c4d006db1433f55e3847ce
SHA1 hash:
902fc7c03eb33119d113c1564fd878dbe17bc7cd
Link:
https://www.unpac.me/results/0b97dfdd-615c-4125-9dd8-6ce6354220e3/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/41573d104263/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/41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2

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
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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 41573d104263a727eca5295cd59bf91c93d2a24ddb024d84f97244bc120036e2

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/258319/

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