MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a44d817c29c97f1418de7f456bd7609c37c774e90f83947b317260a87c48bedd. 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


Mimic


Vendor detections: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a44d817c29c97f1418de7f456bd7609c37c774e90f83947b317260a87c48bedd
SHA3-384 hash: 96672411280465636148abdfb34becece6fc9d7b7e05f97eb5b32c82547a9526cd5f157e2ffe4e96d4fd6e49d64ac73c
SHA1 hash: 6bf8559dfd409bee873f4e147f31ce313d23f2bc
MD5 hash: aabdecc74290221f555bc6400ceef5c6
humanhash: november-romeo-autumn-tennis
File name:mimicransomware_infected.exe
Download: download sample
Signature Mimic
Create hunting rule
File size:24'355'671 bytes
First seen:2024-04-29 07:44:47 UTC
Last seen:2024-04-29 08:31:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e92b2275a730f59940462780c383a1b0 (26 x CryptOne, 3 x Loki, 2 x Mimic)
ssdeep 393216:+/NvciCzO7XohRMU0K611YKvcg7dSVqMXDVZm/3hL1/VYs0tvj1Q3QJrSZ0aP54d:+1ciC6ohRMPK6gKzRctVZmf//VYRtvjR
Threatray 7 similar samples on MalwareBazaar
TLSH T12437334BB4159B42FEFBCD304FE85684D1861DE056B88DFAB7ED17C9C28AAA43073190
TrID 91.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.6% (.EXE) Win64 Executable (generic) (10523/12/4)
1.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4504/4/1)
0.6% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 9494b494d4aeaeac (832 x DCRat, 172 x RedLineStealer, 134 x CryptOne)
Reporter Anonymous
Tags:exe Mimic mimicransomwaresample

Intelligence

File Origin
# of uploads :
2
# of downloads :
382
Origin country :
TR TR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a44d817c29c97f1418de7f456bd7609c37c774e90f83947b317260a87c48bedd.exe
Verdict:
Malicious activity
Analysis date:
2024-04-29 07:45:30 UTC
Tags:
mimic ransomware
Link:
https://app.any.run/tasks/fbea72e8-3018-4a83-9b76-ec7e6e5ef98d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Creating a process from a recently created file
Creating a process with a hidden window
Launching a process
Moving a file to the %AppData% subdirectory
Moving a file to the Program Files subdirectory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun with the shell\open\command registry branches
Disabling the operating system update service
Changing the Windows explorer settings
Enabling autorun
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
fingerprint lolbin overlay packed setupapi shdocvw shell32
Link:
https://www.filescan.io/uploads/662f5000d2fc149e41270d55/reports/3485654b-f27d-4652-b283-d5c212050117/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a44d817c29c97f1418de7f456bd7609c37c774e90f83947b317260a87c48bedd
Result
Verdict:
MALICIOUS
Result
Threat name:
Mimic
Create hunting rule
Detection:
malicious
Classification:
rans.phis.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433145
Signature
Connects to many different private IPs (likely to spread or exploit)
Connects to many different private IPs via SMB (likely to spread or exploit)
Contains functionality to bypass UAC (CMSTPLUA)
Contains functionality to clear event logs
Contains functionality to compare user and computer (likely to detect sandboxes)
Creates a Image File Execution Options (IFEO) Debugger entry
Creates an undocumented autostart registry key
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for submitted file
Overwrites Mozilla Firefox settings
Potentially malicious time measurement code found
Tries to harvest and steal browser information (history, passwords, etc)
Uses powercfg.exe to modify the power settings
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Yara detected Mimic Ransomware
Yara detected RansomwareGeneric18
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1433145 Sample: mimicransomware_infected.exe Startdate: 29/04/2024 Architecture: WINDOWS Score: 100 85 Malicious sample detected (through community Yara rule) 2->85 87 Multi AV Scanner detection for submitted file 2->87 89 Yara detected RansomwareGeneric18 2->89 91 2 other signatures 2->91 14 mimicransomware_infected.exe 14 2->14         started        18 encrypt.exe 2->18         started        20 chrome.exe 9 2->20         started        23 encrypt.exe 2->23         started        process3 dnsIp4 65 C:\tempenc\encrypt.exe, PE32 14->65 dropped 67 C:\tempencverything64.dll, 7-zip 14->67 dropped 69 C:\tempenc\sdel64.exe, PE32+ 14->69 dropped 77 4 other files (none is malicious) 14->77 dropped 109 Writes many files with high entropy 14->109 25 encrypt.exe 2 13 14->25         started        71 C:\...\times.json.fortservicebackup@gmail.com, data 18->71 dropped 73 xulstore.json.fort...icebackup@gmail.com, data 18->73 dropped 75 webappsstore.sqlit...icebackup@gmail.com, data 18->75 dropped 79 267 other files (262 malicious) 18->79 dropped 111 Connects to many different private IPs via SMB (likely to spread or exploit) 18->111 113 Connects to many different private IPs (likely to spread or exploit) 18->113 115 Creates an undocumented autostart registry key 18->115 117 4 other signatures 18->117 29 encrypt.exe 18->29         started        31 encrypt.exe 18->31         started        33 encrypt.exe 18->33         started        35 Everything.exe 18->35         started        81 239.255.255.250 unknown Reserved 20->81 37 chrome.exe 20->37         started        file5 signatures6 process7 dnsIp8 57 C:\Users\user\AppData\Local\...\encrypt.exe, PE32 25->57 dropped 59 C:\Users\user\AppData\...verything64.dll, 7-zip 25->59 dropped 61 C:\Users\user\AppData\Local\...\sdel64.exe, PE32+ 25->61 dropped 63 4 other files (none is malicious) 25->63 dropped 101 Contains functionality to bypass UAC (CMSTPLUA) 25->101 103 Creates an undocumented autostart registry key 25->103 105 Contains functionality to clear event logs 25->105 107 3 other signatures 25->107 40 encrypt.exe 25->40         started        83 www.google.com 172.217.4.196, 443, 49708, 49709 GOOGLEUS United States 37->83 file9 signatures10 process11 signatures12 93 Contains functionality to bypass UAC (CMSTPLUA) 40->93 95 Writes a notice file (html or txt) to demand a ransom 40->95 97 Uses powercfg.exe to modify the power settings 40->97 99 4 other signatures 40->99 43 encrypt.exe 40->43         started        process13 process14 45 encrypt.exe 43->45         started        process15 47 encrypt.exe 45->47         started        process16 49 encrypt.exe 47->49         started        process17 51 encrypt.exe 49->51         started        process18 53 encrypt.exe 51->53         started        process19 55 encrypt.exe 53->55         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a44d817c29c97f1418de7f456bd7609c37c774e90f83947b317260a87c48bedd
Gathering data
Threat name:
Win32.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2024-04-29 07:45:08 UTC
File Type:
PE (Exe)
Extracted files:
63
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=urgyc7bjzf7rigg6p5cwxv3atq34o5hjb6bzi6zrojqkq7cix3oq._file
Verdict:
malicious
Similar samples:
1dd3edb673a05c19521b785935f8e803ec5f3104883db80f1a671182e23c4274
Mimic
6fb303dd8ba36381948127d44bd8541e4a1ab8af07b46526ace08458f2498850
Mimic
8ca51ea9c184a9158e890bdefc538f7c49cfbbd33c19f3fadca0c03490a5b707
Mimic
ad9fcfa1fd3f2dfbf14aab9de3d95608bbb03ec07c52a40f55f9b9380d054fbc
Mimic
e1612e3d774b3ebd2559eb3ec8b59890d64712386563bee84da82e7b7dfbebe7
Mimic
Result
Malware family:
mimic
Create hunting rule
Score:
  10/10
Tags:
family:mimic evasion persistence ransomware spyware stealer
Link:
https://tria.ge/reports/240429-jld72sea7v/
Behaviour
Checks SCSI registry key(s)
Modifies registry class
Opens file in notepad (likely ransom note)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Uses Task Scheduler COM API
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Adds Run key to start application
Enumerates connected drives
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Modifies system executable filetype association
Reads user/profile data of web browsers
Deletes System State backups
Sets file execution options in registry
Modifies boot configuration data using bcdedit
Renames multiple (6698) files with added filename extension
Detects Mimic ransomware
Mimic
Modifies security service
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a44d817c29c9/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/a44d817c29c97f1418de7f456bd7609c37c774e90f83947b317260a87c48bedd

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:DebuggerCheck__API
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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants

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
Reviews
IDCapabilitiesEvidence
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdiplusShutdown
gdiplus.dll::GdipAlloc
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::AttachConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::FreeConsole
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileMappingW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW

Comments