MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b7aec5f73d2a6bbd8cd920edb4760e2edadc98c3a45bf4fa994d47ca9cbd02f6. 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


WarmCookie


Vendor detections: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b7aec5f73d2a6bbd8cd920edb4760e2edadc98c3a45bf4fa994d47ca9cbd02f6
SHA3-384 hash: 25b07ecc853d56b7291a672abb0d54133903fe68dbe526837d5e6c40b032925f1dbd31a4e3516120fe0d7373e132dec5
SHA1 hash: 7221b9125608a54f9dd706166f936c16ee23164a
MD5 hash: 59b7b8d29252a9128536fbd08d24375f
humanhash: vegan-lion-paris-mirror
File name:akdn2nefd.bin
Download: download sample
Signature WarmCookie
Create hunting rule
File size:159'232 bytes
First seen:2024-08-15 03:23:00 UTC
Last seen:2024-09-13 21:06:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 4e07c2fd62376d20191892e1e1215fcd (2 x WarmCookie)
ssdeep 3072:0lCt2jrijQEjnMUWzsjhVPbuGHUluQj6vkZD4vP5iZWyPr:QCIrijNMv6XPbr0kulr
TLSH T12BF32947F6A210EBE9B6C635C9632527FB72385543309B9F4B5446225F237A0EE3DB20
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter IdaNotPro
Tags:backdoor exe warmcookie

Intelligence

File Origin
# of uploads :
2
# of downloads :
507
Origin country :
IN IN
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
akdn2nefd.exe
Verdict:
Malicious activity
Analysis date:
2024-08-15 01:44:54 UTC
Tags:
warmcookie backdoor
Link:
https://app.any.run/tasks/5d1f09a9-dc83-4070-bd8b-4c9a593fc572

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Malware.Lazy-10030858-0
Create hunting rule

Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66bd7c9bb35234d5cc65e3fe
Tags:
Static
Verdict:
Unknown
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm lolbin masquerade microsoft_visual_cc shell32
Link:
https://www.filescan.io/uploads/66bd74973930e113b90b7fa6/reports/107df145-a225-4cb0-b5e2-ccbda09bc490/overview
Verdict:
Malicious
Labled as:
Malware.Lazy
Link:
https://www.hybrid-analysis.com/sample/b7aec5f73d2a6bbd8cd920edb4760e2edadc98c3a45bf4fa994d47ca9cbd02f6
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/e47a3a40-69d1-4d1f-804b-1e9acd9654d8
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1493196
Signature
Creates files in the system32 config directory
Drops HTML or HTM files to system directories
Found evasive API chain (may stop execution after checking mutex)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
System process connects to network (likely due to code injection or exploit)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1493196 Sample: akdn2nefd.bin.exe Startdate: 15/08/2024 Architecture: WINDOWS Score: 76 41 Multi AV Scanner detection for dropped file 2->41 43 Multi AV Scanner detection for submitted file 2->43 7 loaddll64.exe 5 2->7         started        10 rundll32.exe 13 2->10         started        14 rundll32.exe 2->14         started        16 3 other processes 2->16 process3 dnsIp4 35 C:\ProgramData\TECLA\Updater.dll, PE32+ 7->35 dropped 18 cmd.exe 1 7->18         started        20 rundll32.exe 4 7->20         started        23 rundll32.exe 4 7->23         started        25 3 other processes 7->25 39 72.5.43.29, 49730, 49731, 49732 UNASSIGNED United States 10->39 45 System process connects to network (likely due to code injection or exploit) 10->45 47 Creates files in the system32 config directory 10->47 49 Drops HTML or HTM files to system directories 10->49 file5 signatures6 process7 file8 27 rundll32.exe 4 18->27         started        31 C:\ProgramData\Tandem\Updater.dll, PE32+ 20->31 dropped 33 C:\ProgramData\SoftServe\Updater.dll, PE32+ 23->33 dropped process9 file10 37 C:\ProgramData\Thinkship\Updater.dll, PE32+ 27->37 dropped 51 Found evasive API chain (may stop execution after checking mutex) 27->51 signatures11
Score:
6%
Verdict:
Benign
File Type:
PE
Link:
https://malprob.io/report/b7aec5f73d2a6bbd8cd920edb4760e2edadc98c3a45bf4fa994d47ca9cbd02f6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b7aec5f73d2a6bbd8cd920edb4760e2edadc98c3a45bf4fa994d47ca9cbd02f6/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-08-15 03:23:06 UTC
File Type:
PE+ (Dll)
Extracted files:
1
AV detection:
9 of 24 (37.50%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w6xml5z5fjv33dgzedw3i5qof3nnzggdurn7j6uzjvd4vhf5al3a._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery
Link:
https://tria.ge/reports/240815-dxgjnasbrb/
Behaviour
Checks processor information in registry
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Drops file in System32 directory
Checks installed software on the system
Loads dropped DLL
Blocklisted process makes network request
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4395d40b-e61d-4f5f-9db9-ae1e908c198c
Unpacked files
SH256 hash:
b7aec5f73d2a6bbd8cd920edb4760e2edadc98c3a45bf4fa994d47ca9cbd02f6
MD5 hash:
59b7b8d29252a9128536fbd08d24375f
SHA1 hash:
7221b9125608a54f9dd706166f936c16ee23164a
Link:
https://www.unpac.me/results/2c534c4a-a5ae-405d-b6f3-5e35cab9280f/
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/b7aec5f73d2a6bbd8cd920edb4760e2edadc98c3a45bf4fa994d47ca9cbd02f6

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:crime_warmcookie
Create hunting rule
Author:Rony (r0ny_123)
Description:Detectes warmcookie malware
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_WarmCookie_7d32fa90
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/dipping-into-danger

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 (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationW
KERNEL32.dll::GetSystemInfo
KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::GetSystemDirectoryW
KERNEL32.dll::RemoveDirectoryW
KERNEL32.dll::GetTempFileNameW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW

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