MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b. 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: 10


Intelligence 10 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b
SHA3-384 hash: 375e20238ff8120114e92b270f6332adb2cc7f8dcf064f0f1597c8bedf64ee5b4b1e8f21296df64430a45f91bc519641
SHA1 hash: f58cf06ed624e7be9dfe1c41c0bd707c48309061
MD5 hash: 90d24bb9468ce79f94522691e69d3643
humanhash: november-river-sweet-item
File name:OD.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:891'800 bytes
First seen:2023-12-12 09:44:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:BsH6b01xp5Qd8AQc8JIbzyFLJB9DVdl43qC4UpgI:BPsL5I8AQc8JIbO1epL
TLSH T16515D17AD2FD60B9D4AFC9798E60A7E6653214133603D586CCD4E780783D7FB8AD048A
TrID 30.2% (.EXE) Win64 Executable (generic) (10523/12/4)
18.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
14.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
12.9% (.EXE) Win32 Executable (generic) (4505/5/1)
5.9% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter lowmal3
Tags:exe FormBook signed

Code Signing Certificate

Organisation:Microsoft Cooperation 2023
Issuer:Microsoft Cooperation 2023
Algorithm:sha256WithRSAEncryption
Valid from:2023-12-11T23:25:51Z
Valid to:2024-12-11T23:25:51Z
Serial number: 7edc07fd8ab44b1a7286365fa822712e
Thumbprint Algorithm:SHA256
Thumbprint: 100efdc271e1574220213c1f66cbadef5a671e44a0486099ca8037385af5a558
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
306
Origin country :
DE DE
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/466357/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.25212.19249.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Launching a process
Creating a file
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65782ba03c6ae873fb8bc043/reports/4b56473b-d86c-4fdb-8d27-5f772ffd0e96/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/dd04b235-4857-47ed-9547-7d94f95b8fd1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1359937
Signature
.NET source code contains potential unpacker
.NET source code contains process injector
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for URL or domain
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1359937 Sample: OD.exe Startdate: 12/12/2023 Architecture: WINDOWS Score: 100 28 www.southskyvista.top 2->28 30 www.sfqqqq.com 2->30 32 15 other IPs or domains 2->32 48 Snort IDS alert for network traffic 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 5 other signatures 2->54 10 OD.exe 3 2->10         started        signatures3 process4 signatures5 56 Writes to foreign memory regions 10->56 58 Allocates memory in foreign processes 10->58 60 Injects a PE file into a foreign processes 10->60 13 calc.exe 10->13         started        process6 signatures7 62 Maps a DLL or memory area into another process 13->62 16 zrQdUmWsJdXakycIEwxkjoxKxU.exe 13->16 injected process8 process9 18 find.exe 13 16->18         started        21 verifiergui.exe 16->21         started        signatures10 40 Tries to steal Mail credentials (via file / registry access) 18->40 42 Tries to harvest and steal browser information (history, passwords, etc) 18->42 44 Writes to foreign memory regions 18->44 46 3 other signatures 18->46 23 zrQdUmWsJdXakycIEwxkjoxKxU.exe 18->23 injected 26 firefox.exe 18->26         started        process11 dnsIp12 34 www.lifecoachen.com 23.235.160.38, 49754, 49755, 49756 XIAOZHIYUN1-AS-APICIDCNETWORKUS United States 23->34 36 www.ccamio.com 91.195.240.117, 49712, 49714, 49716 SEDO-ASDE Germany 23->36 38 10 other IPs or domains 23->38
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-12-12 07:38:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 23 (78.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=eotcn6cqzeevisoswidihdkj2fl4fug24pl7xb3qm5ufym5xksnq._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/231212-lq2v1saghl/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b
MD5 hash:
90d24bb9468ce79f94522691e69d3643
SHA1 hash:
f58cf06ed624e7be9dfe1c41c0bd707c48309061
Link:
https://www.unpac.me/results/20cc4c16-1259-4815-9913-3b8780b5e309/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/23a626f850c9/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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 23a626f850c9095449d2b206838d49d157c2d0dae3d7fb877067685c33b7549b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/466357/

Comments