MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1. 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


SheetRAT


Vendor detections: 14


Intelligence 14 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1
SHA3-384 hash: 1e2986e89406cd96e83b649f425ddfe9cbccb8e7ca707f75c23f4bcc6930c098126ec7fd017dc938c4cb37100dc7babb
SHA1 hash: 31b82e3e61c4e06a2bd9f08c97f5569ee747e8c5
MD5 hash: c40916bf88f90d7b219445b574db4525
humanhash: tennis-west-delta-happy
File name:BootstrapperNew.exe
Download: download sample
Signature SheetRAT
Create hunting rule
File size:3'600'896 bytes
First seen:2025-04-19 17:24:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d59a4a699610169663a929d37c90be43 (75 x DCRat, 22 x njrat, 15 x SalatStealer)
ssdeep 98304:9W/NZXfHaFoCIvqkqXf0FglY1XOe97vLn:9W/TaaqkSIglY1XOCnn
Threatray 1 similar samples on MalwareBazaar
TLSH T132F5E00DFE96EC15DC1A3D778EE591205B3138D1AE62D2063148BFF987663B218E267C
TrID 38.0% (.EXE) Win32 Executable Delphi generic (14182/79/4)
28.2% (.EXE) Win64 Executable (generic) (10522/11/4)
12.0% (.EXE) Win32 Executable (generic) (4504/4/1)
5.5% (.EXE) Win16/32 Executable Delphi generic (2072/23)
5.4% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
dhash icon cc8e333333338ecc (6 x SalatStealer, 3 x DCRat, 3 x SheetRAT)
Reporter MikeyKike
Tags:exe SheetRat

Intelligence

File Origin
# of uploads :
1
# of downloads :
471
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
BootstrapperNew.exe
Verdict:
Malicious activity
Analysis date:
2025-02-24 23:18:05 UTC
Tags:
sheetrat rat remote
Link:
https://app.any.run/tasks/16650263-2f19-4367-ae5f-044d62b81644

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/3022/
Detection(s):
Win.Packed.Marsilia-10021147-0
Create hunting rule

Win.Packed.Packy-10036375-0
Create hunting rule

Win.Trojan.Injector-6297685-1
Create hunting rule

Win.Trojan.Agent-345883
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6803dc7b2203b3e10cd1a9d1
Tags:
autorun packed virus sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a window
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Creating a file
Running batch commands
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Connection attempt
Creating a file in the Windows directory
Enabling the libraries to load when starting the app (AppInit_DLLs)
Launching a process
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
TrojanDropper.Delf
Link:
https://www.hybrid-analysis.com/sample/f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d535c00b-9e94-407f-95c4-556d3fe7582e
Result
Threat name:
SheetRat
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1669266
Signature
.NET source code contains potential unpacker
Allows loading of unsigned dll using appinit_dll
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Found malware configuration
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Costura Assembly Loader
Yara detected SheetRat
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1669266 Sample: BootstrapperNew.exe Startdate: 19/04/2025 Architecture: WINDOWS Score: 100 66 Found malware configuration 2->66 68 Antivirus detection for dropped file 2->68 70 Antivirus / Scanner detection for submitted sample 2->70 72 9 other signatures 2->72 8 BootstrapperNew.exe 3 2->8         started        11 Windows 2 2->11         started        14 OpenWith.exe 2->14         started        16 OpenWith.exe 2->16         started        process3 file4 60 C:\Users\user\AppData\Local\...\weqweqwe.exe, PE32+ 8->60 dropped 62 C:\Users\user\AppData\...\BootstrapperNew.exe, PE32 8->62 dropped 18 BootstrapperNew.exe 4 5 8->18         started        23 weqweqwe.exe 17 8->23         started        82 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 11->82 25 cmd.exe 11->25         started        signatures5 process6 dnsIp7 64 108.77.173.66, 4758 ATT-INTERNET4US United States 18->64 58 C:\Users\user\AppData\Roaming\System, PE32 18->58 dropped 74 Antivirus detection for dropped file 18->74 76 Multi AV Scanner detection for dropped file 18->76 78 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 18->78 80 3 other signatures 18->80 27 cmd.exe 1 18->27         started        30 cmd.exe 1 18->30         started        32 cmd.exe 1 18->32         started        38 23 other processes 18->38 34 conhost.exe 25->34         started        36 schtasks.exe 25->36         started        file8 signatures9 process10 signatures11 84 Uses schtasks.exe or at.exe to add and modify task schedules 27->84 40 conhost.exe 27->40         started        42 schtasks.exe 1 27->42         started        44 conhost.exe 30->44         started        46 schtasks.exe 1 30->46         started        48 conhost.exe 32->48         started        50 schtasks.exe 1 32->50         started        52 conhost.exe 38->52         started        54 schtasks.exe 38->54         started        56 41 other processes 38->56 process12
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1/
Threat name:
Win32.Trojan.Barys
Create hunting rule
Status:
Malicious
First seen:
2025-02-24 03:18:16 UTC
File Type:
PE (Exe)
Extracted files:
33
AV detection:
34 of 36 (94.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6v5igypt3ir3wznsjghuebglnyrkckmqtpfhilmmfo4jqwihggyq._file
Verdict:
malicious
Label(s):
balkanrat
Create hunting rule
Similar samples:
error
SheetRAT
f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1
SheetRAT
Result
Malware family:
n/a
Score:
  7/10
Tags:
discovery
Link:
https://tria.ge/reports/250419-vzc3pa11hv/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Checks computer location settings
Executes dropped EXE
Verdict:
Malicious
Tags:
Win.Packed.Marsilia-10021147-0
YARA:
n/a
Link:
https://app.threat.zone/submission/5a0d5530-7e30-4af5-bf7d-2fd504a78eb9
Unpacked files
SH256 hash:
f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1
MD5 hash:
c40916bf88f90d7b219445b574db4525
SHA1 hash:
31b82e3e61c4e06a2bd9f08c97f5569ee747e8c5
Link:
https://www.unpac.me/results/d0d58103-f1ac-460f-9579-a76f8e82962e/
SH256 hash:
35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
MD5 hash:
16e5a492c9c6ae34c59683be9c51fa31
SHA1 hash:
97031b41f5c56f371c28ae0d62a2df7d585adaba
Link:
https://www.unpac.me/results/d0d58103-f1ac-460f-9579-a76f8e82962e/
SH256 hash:
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8
MD5 hash:
f227cdfd423b3cc03bb69c49babf4da3
SHA1 hash:
3db5a97d9b0f2545e7ba97026af6c28512200441
Detections:
INDICATOR_EXE_Packed_Fody
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_RawPaste_URL
Create hunting rule
Link:
https://www.unpac.me/results/d0d58103-f1ac-460f-9579-a76f8e82962e/
Parent samples :
1ca4a73b1076d2c6c0b97b3544919281b091e260f4970f62ae7f1cbcb9cc5e74
494c215c4485565fbb9701f0b2dd709bd5be57d3463a827f7276f74fa6ef4b34
6c7fd8731d8b9cbb61ade117afbaa8e622437aae4b859dd50036cfbe857f0be5
f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8
SH256 hash:
729f9cb5aad55d76b4cfbafd8d4ce4ff703f40b5a302e06cde39c66c10a0d552
MD5 hash:
ee2edd0a2fcd04e3e192f8223715593e
SHA1 hash:
2bcd4998881a48ad0e80762b4c09b3fe15bb6f5d
Link:
https://www.unpac.me/results/d0d58103-f1ac-460f-9579-a76f8e82962e/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f57a8361f3da/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/f57a8361f3da23bb65b2498f4204cb6e22a129909bca742d8c2bb898590731b1

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:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:INDICATOR_SUSPICIOUS_EXE_RawPaste_URL
Create hunting rule
Author:ditekSHen
Description:Detects executables (downlaoders) containing URLs to raw contents of a paste
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/3022/

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_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
SHELL_APIManipulates System Shellshell32.dll::ShellExecuteA
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CloseHandle
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateFileA
kernel32.dll::GetWindowsDirectoryA
kernel32.dll::GetSystemDirectoryA
kernel32.dll::GetTempPathA

Comments