MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b. 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: 17


Intelligence 17 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b
SHA3-384 hash: 818d29933dfe997cd61da113fdb7f4c63dc6740fef82a69ba1531e58f5fd8742fc9e25b7e44a450f31419b7591e56c19
SHA1 hash: 2ae6619febb0c9f4d318daa9f28172c2ed9ed4da
MD5 hash: 735a274389af85c4b4f6ccd684b1b30a
humanhash: lactose-triple-wyoming-rugby
File name:Invoice and packing list.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:856'064 bytes
First seen:2025-01-13 14:25:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:C8yNK1t4NK1tOqLB94uH/Stkd3uRStXvfFQ:Rhz9fvj
TLSH T1060501543A8AEF03C0925BF41821E2F46B745E8CA961D7079FEA3EEF7C767042A41653
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
1'491
Origin country :
US US
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b.exe
Verdict:
Malicious activity
Analysis date:
2025-01-14 03:12:18 UTC
Tags:
formbook netreactor xloader stealer
Link:
https://app.any.run/tasks/5a8f0ac9-2956-40e4-bf85-03bc0cfeda84

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Dropper.Nanocore-10025638-0
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6785227baa9c8e7858de8204
Tags:
agenttesla virus shell msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b
Result
Verdict:
SUSPICIOUS
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/77e43df0-9020-4c60-b095-1335f2c30eff
Result
Threat name:
FormBook, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1590095
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Rundll32 Execution Without CommandLine Parameters
Sigma detected: Scheduled temp file as task from temp location
Suricata IDS alerts for network traffic
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
Uses netstat to query active network connections and open ports
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1590095 Sample: Invoice and packing list.exe Startdate: 13/01/2025 Architecture: WINDOWS Score: 100 64 www.yselection.xyz 2->64 66 www.enelog.xyz 2->66 68 10 other IPs or domains 2->68 82 Suricata IDS alerts for network traffic 2->82 84 Found malware configuration 2->84 86 Malicious sample detected (through community Yara rule) 2->86 90 15 other signatures 2->90 11 Invoice and packing list.exe 7 2->11         started        15 utlAHqvw.exe 5 2->15         started        signatures3 88 Performs DNS queries to domains with low reputation 66->88 process4 file5 56 C:\Users\user\AppData\Roaming\utlAHqvw.exe, PE32 11->56 dropped 58 C:\Users\...\utlAHqvw.exe:Zone.Identifier, ASCII 11->58 dropped 60 C:\Users\user\AppData\Local\...\tmp2498.tmp, XML 11->60 dropped 62 C:\Users\...\Invoice and packing list.exe.log, ASCII 11->62 dropped 100 Writes to foreign memory regions 11->100 102 Allocates memory in foreign processes 11->102 104 Adds a directory exclusion to Windows Defender 11->104 106 Injects a PE file into a foreign processes 11->106 17 MSBuild.exe 11->17         started        20 powershell.exe 23 11->20         started        22 powershell.exe 23 11->22         started        24 schtasks.exe 1 11->24         started        108 Multi AV Scanner detection for dropped file 15->108 110 Machine Learning detection for dropped file 15->110 26 MSBuild.exe 15->26         started        28 schtasks.exe 15->28         started        signatures6 process7 signatures8 70 Modifies the context of a thread in another process (thread injection) 17->70 72 Maps a DLL or memory area into another process 17->72 74 Sample uses process hollowing technique 17->74 80 3 other signatures 17->80 30 explorer.exe 82 1 17->30 injected 76 Loading BitLocker PowerShell Module 20->76 33 conhost.exe 20->33         started        35 WmiPrvSE.exe 20->35         started        37 conhost.exe 22->37         started        39 conhost.exe 24->39         started        78 Found direct / indirect Syscall (likely to bypass EDR) 26->78 41 conhost.exe 28->41         started        process9 signatures10 112 Uses netstat to query active network connections and open ports 30->112 43 NETSTAT.EXE 30->43         started        46 rundll32.exe 30->46         started        48 autofmt.exe 30->48         started        50 autofmt.exe 30->50         started        process11 signatures12 92 Modifies the context of a thread in another process (thread injection) 43->92 94 Maps a DLL or memory area into another process 43->94 96 Tries to detect virtualization through RDTSC time measurements 43->96 98 Switches to a custom stack to bypass stack traces 43->98 52 cmd.exe 43->52         started        process13 process14 54 conhost.exe 52->54         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-01-13 07:53:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xt7lj3br44yytgqn3ufgbcvh5s733pzx6swdqefsow5gsbnbs2nq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a03d discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250113-rrttpavngs/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
Win.Dropper.Nanocore-10025638-0
YARA:
n/a
Link:
https://app.threat.zone/submission/db1651a3-ec57-4e2c-83bb-1fe9b9b2d1ac
Unpacked files
SH256 hash:
4f59ffd1f9e8b2088120692bae2d99ddf906cab5d98435baad7ac4073ca0fe81
MD5 hash:
6782ca1720c77e90ba84e9ab5ba4f07d
SHA1 hash:
79e819dde4a4b29ca3a221f89cf73f1fd818f1de
Detections:
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/d8488292-1a29-4117-8f3b-824f1bab7e9b/
Parent samples :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 hash:
45b5d2aa230cedb0ec179d1b120eb0d5763ff75c870984e389fbd6f01b19d305
MD5 hash:
c8b99fe511e63a60e3bbc51d8abba0e0
SHA1 hash:
6d39b42d093ca9615ae1a6b989152475058e4826
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/d8488292-1a29-4117-8f3b-824f1bab7e9b/
SH256 hash:
fe26a8a1df970da362283c68cfb162d4f1acc95a82ef2e8046a567083e658465
MD5 hash:
cd4c77cd32b55506c5682eba826ef4fa
SHA1 hash:
2205c17610803a3dbc2523a753f17cf9de0bc5b2
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/d8488292-1a29-4117-8f3b-824f1bab7e9b/
Parent samples :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 hash:
bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b
MD5 hash:
735a274389af85c4b4f6ccd684b1b30a
SHA1 hash:
2ae6619febb0c9f4d318daa9f28172c2ed9ed4da
Link:
https://www.unpac.me/results/d8488292-1a29-4117-8f3b-824f1bab7e9b/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bcfeb4ec31e7/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/bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b

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: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
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

Executable exe bcfeb4ec31e731899a0ddd0a608aa7ecbfbdbf37f4ac3810b275ba6905a1969b

(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

Comments