MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af. 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: 15


Intelligence 15 IOCs YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af
SHA3-384 hash: b62faecea3991eee8120069e0182ec1df087b80f3ae25cd2a4a894e66486968eca728c6eb0a73ce429be6a84db2655fa
SHA1 hash: 66f4bf1bcf7725027b36829f1d74852d00bdcea3
MD5 hash: 5b135b762f37ef94793e8c11ce71423d
humanhash: alabama-thirteen-romeo-seventeen
File name:file.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:709'632 bytes
First seen:2024-02-16 12:25:02 UTC
Last seen:2024-02-16 14:27:57 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 12288:8sQ4W3iWou2vq6sKQWSIlMorKYGnbpTrh/NOaUivlEXD+Gbmcr:TAiVuEAWVzgdTrhnUuGx
Threatray 35 similar samples on MalwareBazaar
TLSH T1A9E42337BA502B70C9EB97F2757204348338E91AB625F7A03FE622DB3AB7314455254B
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon f0d4cce830b2b230 (6 x Formbook, 2 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
329
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af.exe
Verdict:
Malicious activity
Analysis date:
2024-02-16 12:38:36 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/0b303f6a-4699-40f3-b7bf-70413aacd64c

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/476481/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65cf542bb7fbcf60a472def6/reports/74675e53-8a8c-45cc-8d85-b9f6236eecdf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/15ee6f6c-fa4f-4cf1-a916-1e7c73dd4179
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1393443
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
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1393443 Sample: file.exe Startdate: 16/02/2024 Architecture: WINDOWS Score: 100 52 Malicious sample detected (through community Yara rule) 2->52 54 Sigma detected: Scheduled temp file as task from temp location 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 6 other signatures 2->58 9 file.exe 7 2->9         started        13 lWvKkWQJ.exe 5 2->13         started        process3 file4 48 C:\Users\user\AppData\Roaming\lWvKkWQJ.exe, PE32 9->48 dropped 50 C:\Users\user\AppData\Local\...\tmpFB35.tmp, XML 9->50 dropped 66 Uses schtasks.exe or at.exe to add and modify task schedules 9->66 68 Adds a directory exclusion to Windows Defender 9->68 70 Injects a PE file into a foreign processes 9->70 15 file.exe 9->15         started        18 powershell.exe 22 9->18         started        20 schtasks.exe 1 9->20         started        72 Multi AV Scanner detection for dropped file 13->72 22 lWvKkWQJ.exe 13->22         started        24 schtasks.exe 1 13->24         started        signatures5 process6 signatures7 74 Maps a DLL or memory area into another process 15->74 26 TRugptCWNaghcocZBpeKgVdCfc.exe 15->26 injected 28 WmiPrvSE.exe 18->28         started        30 conhost.exe 18->30         started        32 conhost.exe 20->32         started        34 TRugptCWNaghcocZBpeKgVdCfc.exe 22->34 injected 37 conhost.exe 24->37         started        process8 signatures9 39 proquota.exe 26->39         started        60 Maps a DLL or memory area into another process 34->60 42 proquota.exe 34->42         started        process10 signatures11 62 Maps a DLL or memory area into another process 39->62 64 Queues an APC in another process (thread injection) 39->64 44 explorer.exe 22 1 39->44 injected 46 TRugptCWNaghcocZBpeKgVdCfc.exe 39->46 injected process12
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2024-02-16 06:24:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqo5boxp2xxwpvv6jlhmpspa3r6ypnliad7z36kcj23somofasxq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1b1f97279cf2908be5f7f576dac2e2eb7a657eafac602e4bdc1367d94b69e7cc
Formbook
3f71cd633e4008724884843131ed3d03c8d6613882f81a8afc615ad30f841dfe
Formbook
4a750d67fcf8282a6ac9bed9aaa4ad1f002859ce6de73ee72697b840a33e3cf0
Formbook
986b0bd9617fe3f2a0956754996c45298cdc3cdd2703ec837fa2d966028f5c8c
Formbook
aba591be8db32ef7723900ffb4541610cf3c3f6f4b32c5792566d61815403aa4
Formbook
bd6cc17506faa8bcefc0131b2017636381df3ff71a2a58399facf165cb877140
Formbook
c1968c0ec695e8919d12559e65ffa6598009669ce84ee15a7b9190241273caef
Formbook
+ 25 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240216-pl8dsaah51/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Unpacked files
SH256 hash:
c40e52ee36cda5002e6a5439d476ddab5dd5b44e78fe3ba86100f28b4868271f
MD5 hash:
4b41bc1657cd24c327b905115c75d1ec
SHA1 hash:
56edf62f30641d16200c3cbf6725fc26c33e343e
Link:
https://www.unpac.me/results/21565075-3da1-4c9d-9c94-85a12682896a/
SH256 hash:
fa574b9380dd1375a5d44ee2fccac7b85742acf34538621ca554a8c66725811b
MD5 hash:
d07309f60e0849380267a0f71b48e572
SHA1 hash:
603b763de64d53d4efe734d7b06cf52305fbea47
Link:
https://www.unpac.me/results/21565075-3da1-4c9d-9c94-85a12682896a/
SH256 hash:
ab3d870b57ffaac449078340a00ba6e0b2bd551444b1fd04fb2e26f80591f044
MD5 hash:
45e5bc690da784b17a8712f0c9d90b9e
SHA1 hash:
ee44c7590640799d7cf17e7fea505d0fea1741f0
Detections:
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/21565075-3da1-4c9d-9c94-85a12682896a/
Parent samples :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 hash:
72638f4b30cc9dab51d31216991957bf1cd118b8a8743227b3e8f9c4805f7628
MD5 hash:
2a8240bba06e832ee5d136a0a7e5b5b9
SHA1 hash:
de49d9b33004a4a622a4279b3ee2b3e3e5cd012b
Link:
https://www.unpac.me/results/21565075-3da1-4c9d-9c94-85a12682896a/
SH256 hash:
f67add37cd1edff612de14314b12c9570e750da68cdd287c45a335e976209ee3
MD5 hash:
50f07872501041322106a03004192d8d
SHA1 hash:
5a55d76dee6308e68b11240a275400bfabf8a56c
Link:
https://www.unpac.me/results/21565075-3da1-4c9d-9c94-85a12682896a/
SH256 hash:
c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af
MD5 hash:
5b135b762f37ef94793e8c11ce71423d
SHA1 hash:
66f4bf1bcf7725027b36829f1d74852d00bdcea3
Link:
https://www.unpac.me/results/21565075-3da1-4c9d-9c94-85a12682896a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c41dd0baefd5/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/c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af

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:DebuggerCheck__GlobalFlags
Create hunting rule
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: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
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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 c41dd0baefd5ef67d6be4acec7c9e0dc7d87b56800ff9df9424eb72731c504af

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/476481/

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