MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23ef609f5d9d1ebc8c958c16d88796a031f5509b2abee0f099940dcc2b62c28d. 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: 16


Intelligence 16 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 23ef609f5d9d1ebc8c958c16d88796a031f5509b2abee0f099940dcc2b62c28d
SHA3-384 hash: 957c8ad5386f58436a09a3eb8574ca7df147720d8bf195e2faaff1cfb96f8a36716c01669d187137f3056f8c913157e0
SHA1 hash: 249dffd8716f60687ff052783c74e123eaf2e7e1
MD5 hash: f4beeabcaa566500bb74465b8621b078
humanhash: fruit-vegan-minnesota-skylark
File name:PO# 81136575.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:744'968 bytes
First seen:2024-09-12 19:30:36 UTC
Last seen:2024-09-12 20:29:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:w67kvDoQNZmYGHGacZNNXzKdBu6JhF3O2+yzrmg8XkR:w6oxZ7+dBucDHJrmi
Threatray 2'528 similar samples on MalwareBazaar
TLSH T10AF4234277FC7782C7BA87B290E0A1016BBAB5131A14D6AD4ECE70CB2DB77540361E5B
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)
Magika pebin
File icon (PE):PE icon
dhash icon 70983a848494a0e0 (6 x Formbook, 4 x AgentTesla, 2 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
380
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO# 81136575.exe
Verdict:
Suspicious activity
Analysis date:
2024-09-12 19:50:10 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/45532a52-8676-49c7-8c79-37723d3a0cde

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3053.12183.6682.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e3418076bc4542b049887c
Tags:
Encryption Execution Network Static Stealth Nekark
Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
explorer lolbin overlay packed phishing
Link:
https://www.filescan.io/uploads/66e3417e725fc81856b24884/reports/91d0c386-a180-4726-bfbe-2a571cf4fe8e/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/23ef609f5d9d1ebc8c958c16d88796a031f5509b2abee0f099940dcc2b62c28d
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/076cb2b2-3232-4d87-bd03-401ec5b65ac2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1510377
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found direct / indirect Syscall (likely to bypass EDR)
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1510377 Sample: PO# 81136575.exe Startdate: 12/09/2024 Architecture: WINDOWS Score: 100 62 Malicious sample detected (through community Yara rule) 2->62 64 Antivirus / Scanner detection for submitted sample 2->64 66 Sigma detected: Scheduled temp file as task from temp location 2->66 68 11 other signatures 2->68 8 PO# 81136575.exe 7 2->8         started        12 ThNsNZDO.exe 5 2->12         started        process3 file4 54 C:\Users\user\AppData\Roaming\ThNsNZDO.exe, PE32 8->54 dropped 56 C:\Users\...\ThNsNZDO.exe:Zone.Identifier, ASCII 8->56 dropped 58 C:\Users\user\AppData\Local\...\tmpE1A8.tmp, XML 8->58 dropped 60 C:\Users\user\...\PO# 81136575.exe.log, ASCII 8->60 dropped 70 Writes to foreign memory regions 8->70 72 Allocates memory in foreign processes 8->72 74 Adds a directory exclusion to Windows Defender 8->74 76 Injects a PE file into a foreign processes 8->76 14 RegSvcs.exe 8->14         started        17 powershell.exe 23 8->17         started        19 powershell.exe 23 8->19         started        21 schtasks.exe 1 8->21         started        78 Antivirus detection for dropped file 12->78 80 Multi AV Scanner detection for dropped file 12->80 82 Machine Learning detection for dropped file 12->82 23 RegSvcs.exe 12->23         started        25 schtasks.exe 1 12->25         started        signatures5 process6 signatures7 86 Maps a DLL or memory area into another process 14->86 27 dTpfGnWVvIMjk.exe 14->27 injected 30 dTpfGnWVvIMjk.exe 14->30 injected 88 Loading BitLocker PowerShell Module 17->88 32 WmiPrvSE.exe 17->32         started        34 conhost.exe 17->34         started        36 conhost.exe 19->36         started        38 conhost.exe 21->38         started        40 dTpfGnWVvIMjk.exe 23->40 injected 42 dTpfGnWVvIMjk.exe 23->42 injected 44 conhost.exe 25->44         started        process8 signatures9 84 Found direct / indirect Syscall (likely to bypass EDR) 27->84 46 WerFault.exe 27->46         started        48 WerFault.exe 21 30->48         started        50 WerFault.exe 40->50         started        52 WerFault.exe 42->52         started        process10
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/23ef609f5d9d1ebc8c958c16d88796a031f5509b2abee0f099940dcc2b62c28d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/23ef609f5d9d1ebc8c958c16d88796a031f5509b2abee0f099940dcc2b62c28d/
Threat name:
ByteCode-MSIL.Trojan.SnakeLogger
Create hunting rule
Status:
Malicious
First seen:
2024-09-11 08:43:29 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=epxwbh25tuplzdevrqlnrb4wuay7kue3fk7ob4ezsqg4yk3cykgq._file
Verdict:
malicious
Similar samples:
3a4569fea1cb43114cbb901f17440c2b09ae98d58c81acb8fef6526e4946830c
Formbook
6cc54bd57057a1fc07c2726c351a42f47caef4ae05a2693fbf6b9f693c6761c6
Formbook
7f7219150a44e397a72f82fe9c4232887e991f0b3f0469c29d5cd2b8e3f3d0a7
Formbook
a87b700c19104816959afda09a7673d758a21261d417c14d20a208280ee3385f
Formbook
+ 2'518 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/240912-x8ec8a1bma/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
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
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/cb6e675a-a6b4-4eb2-8d60-16fb15920c04
Unpacked files
SH256 hash:
e6e3cb3e7fcb62cd1512335ae65bb3abb62965dcfa31e53c4a1d57322f2c9b51
MD5 hash:
19ab34483041cf2eb0f732e7d5c6b6bb
SHA1 hash:
1dfcee1c9adab8a9d39f4f0b81b24ae0ef4fc8b0
Link:
https://www.unpac.me/results/78671d8d-48a0-41b6-96cd-fd3038883a76/
SH256 hash:
8a8711900d95a0aaa5e50cb97aeaf0b6902f92b41b6c0f7be3938cb8c9c540aa
MD5 hash:
3067a2274194d7ca7ef2c29c2f3aa93b
SHA1 hash:
f85354548490856786dafa60e002dee1addd825a
Link:
https://www.unpac.me/results/78671d8d-48a0-41b6-96cd-fd3038883a76/
SH256 hash:
89686c7d488fda9b64acc6ac3f880f060dcd20f9499e2ea1ff2920e6cfbc4c80
MD5 hash:
194d0235e25de67967763be89c02a232
SHA1 hash:
c4d94b98ba5bf04a8755518f564720aeb4fdb640
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/78671d8d-48a0-41b6-96cd-fd3038883a76/
SH256 hash:
c59a72e874640d2d2c5669edc14fdeb82a72cbacde61679907d2926b8ed79d08
MD5 hash:
b37fc99b846edbde0d0f36bee1760849
SHA1 hash:
0016396b048dcbda5b87742c32678f706db6362c
Link:
https://www.unpac.me/results/78671d8d-48a0-41b6-96cd-fd3038883a76/
SH256 hash:
23ef609f5d9d1ebc8c958c16d88796a031f5509b2abee0f099940dcc2b62c28d
MD5 hash:
f4beeabcaa566500bb74465b8621b078
SHA1 hash:
249dffd8716f60687ff052783c74e123eaf2e7e1
Link:
https://www.unpac.me/results/78671d8d-48a0-41b6-96cd-fd3038883a76/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/23ef609f5d9d/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/23ef609f5d9d1ebc8c958c16d88796a031f5509b2abee0f099940dcc2b62c28d

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:Detect_APT29_WINELOADER_Backdoor
Create hunting rule
Author:daniyyell
Description:Detects APT29's WINELOADER backdoor variant used in phishing campaigns, this rule also detect bad pdf,shtml,htm and vbs or maybe more depends
Reference:https://cloud.google.com/blog/topics/threat-intelligence/apt29-wineloader-german-political-parties
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

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

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