MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e. 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: 13


Intelligence 13 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
SHA3-384 hash: 153ce767d6b178241d170ab29c59ab2e467914ceb96784b1bd2666ec580d35624499316fbeb50079ea627b93109fd074
SHA1 hash: 90085bacffa3b6a75252f9e06af2d7ac54886e75
MD5 hash: 88153ac6837f5034a7ab44259c90f4dd
humanhash: early-solar-cardinal-william
File name:TEKLİF İST.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:743'936 bytes
First seen:2024-11-05 11:26:48 UTC
Last seen:2024-11-11 10:46:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:MOX2iRzjEZ3eBNdQ6LN5LD8MYoSrwb+dpXeboencW3:MOmYzwIBDRjLHY7rhXeDncW3
Threatray 4'276 similar samples on MalwareBazaar
TLSH T12FF49CC03A363B29DE7857F58A19DCB103B51968B405FAE25EDE77C73489B11AA08F43
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 adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
403
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
TEKLİF İST.exe
Verdict:
No threats detected
Analysis date:
2024-11-05 11:48:44 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/9df79846-419f-44fb-b8aa-4d3c8c311c87

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.6880.18036.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=672a012b8d23d9049133b10a
Tags:
powershell trojan micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
Result
Verdict:
UNKNOWN
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/21cff450-3216-4209-a3ef-6b926344bc5e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1549204
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1549204 Sample: TEKL#U0130F #U0130ST.exe Startdate: 05/11/2024 Architecture: WINDOWS Score: 100 37 www.refabricated-homes-74404.bond 2->37 39 www.oko.events 2->39 41 4 other IPs or domains 2->41 45 Suricata IDS alerts for network traffic 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 12 other signatures 2->51 11 TEKL#U0130F #U0130ST.exe 4 2->11         started        signatures3 process4 file5 35 C:\Users\...\TEKL#U0130F #U0130ST.exe.log, ASCII 11->35 dropped 55 Adds a directory exclusion to Windows Defender 11->55 57 Injects a PE file into a foreign processes 11->57 15 TEKL#U0130F #U0130ST.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 67 Modifies the context of a thread in another process (thread injection) 15->67 69 Maps a DLL or memory area into another process 15->69 71 Sample uses process hollowing technique 15->71 75 2 other signatures 15->75 20 explorer.exe 40 1 15->20 injected 73 Loading BitLocker PowerShell Module 18->73 24 WmiPrvSE.exe 18->24         started        26 conhost.exe 18->26         started        process9 dnsIp10 43 www.oko.events 185.26.122.70, 49784, 80 HOSTLANDRU Russian Federation 20->43 53 System process connects to network (likely due to code injection or exploit) 20->53 28 mstsc.exe 20->28         started        signatures11 process12 signatures13 59 Modifies the context of a thread in another process (thread injection) 28->59 61 Maps a DLL or memory area into another process 28->61 63 Tries to detect virtualization through RDTSC time measurements 28->63 65 Switches to a custom stack to bypass stack traces 28->65 31 cmd.exe 1 28->31         started        process14 process15 33 conhost.exe 31->33         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2024-11-05 11:27:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eo6ivs5yuhtrmujkylvjijwt7rdjhdgmvrbg6ncmamkkv6yxo2pa._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
Similar samples:
0b95079721d911f26b4f72076c2221a3384607bc64d59e80fe8feccb988f0b8d
Formbook
0bc8eae9fe2dc6af83e1b798f9a6b5ef27117c5b8462664a944fca34a4e1e464
Formbook
23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
Formbook
a920dfb486d57b7d60d6bad4643d4f425802ce9ac8c520f9771d6689b65ffe80
Formbook
error
Formbook
f2241314a8601e3c955f96e5923407a14adac63c7dae4c38a98e83e15a53dbde
Formbook
ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2
Formbook
+ 4'266 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/241105-nkffyaspcq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/32a45f03-b841-4374-8c41-4a595d9f31f6
Unpacked files
SH256 hash:
07864a36094fdb51d595bc3e42bce8429054de6c820f8c9dcfe1820c0fd1f8ff
MD5 hash:
d3b47fb3dd8b1c832901282b2d95a83b
SHA1 hash:
84d0afe2d8b7efd5f06eab1ac26d2bc9e25f9c38
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/7ee5536a-9e20-4374-8204-7136e08c785a/
Parent samples :
18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4
883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
8924d6255fe634004cc46de0a9ee6b4d7c44c1612947d747ebea2a6c06d2a37e
c76f4cc201813bc9e4a8d5ae27ce0c59b799f02dd48b3e09af20118a8fe18c50
23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
94f858ec5529f4f52ae1bed542d9a38b2ab7e4be0446c4d9252f0de3d7cf2dce
e7fc9e51d81f4b40dca80a3d83ca54a03120566b6dd6f76e0299546ac178f633
c240de1c470b2ba22b8628de9a10b7d81e9f453eb94a46a9d0875f7f1705409c
090ae9dc91f1165ca92841d7e3485580caa257c2848fed356d78c86e3d72f50b
ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93
64a8f5c2209bf86e1aa4489fffa5cf93aee6955b0106909345a313de38ad7885
83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988
f6f8e9f276a4246055e3bdc46ad1276ef453cbf6d6e8affe67127ea0099bece8
bf7e2c77f1159e34afbead32a16fbff023b6467104ff0220c81f607a2910880e
ece49e828c96a3cbc96535f04ef66109c997cb13a87850c4b66b3de0fd2818f7
6c2cf6bf017b8e9c8731b0b0bc1ddfd20c14e381d5282832d5646ac29158cf73
676528e924dfe6e5e119f33ac5e7e8ee5661f871759e4b32ac27b0a1d243e329
010fc4f0e382f0c0de55b3fcf4b80f6284694833af9d759c584b63a7d540cf2f
SH256 hash:
a814c923e5fbce5c22b2707dd8efe7e1f963c5badcc37038825279d3ca581518
MD5 hash:
c34aa5338f7c1608dde2b3b51d4af76c
SHA1 hash:
ef7535b7531a71a3c292dea5369a25a2c8269d83
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/7ee5536a-9e20-4374-8204-7136e08c785a/
SH256 hash:
aee0e007980ce1a8ee317eb4a201e44e235d16307bc2bb993e1d5a976096fe15
MD5 hash:
69e949651df922d21e0a76a86c588b4a
SHA1 hash:
0710c8c1c1b671c977afba26ae3310477460f326
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/7ee5536a-9e20-4374-8204-7136e08c785a/
SH256 hash:
23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
MD5 hash:
88153ac6837f5034a7ab44259c90f4dd
SHA1 hash:
90085bacffa3b6a75252f9e06af2d7ac54886e75
Link:
https://www.unpac.me/results/7ee5536a-9e20-4374-8204-7136e08c785a/
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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: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 23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e

(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

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