MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835. 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


QuasarRAT


Vendor detections: 16


Intelligence 16 IOCs YARA 31 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835
SHA3-384 hash: 5a76346290955a594b7b29cd07d2991a910070ff85de19ca0ad7c78f570fce5ad6ec96382199be4c787db3e4540cd039
SHA1 hash: afd9d34283450b259a0b8258b9248be6bfc7526f
MD5 hash: 1ef2a44244e9ed357ef249439204593c
humanhash: leopard-high-lithium-washington
File name:rProduct_Inquiry.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:4'388'284 bytes
First seen:2025-06-02 08:02:35 UTC
Last seen:2025-06-02 08:02:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 00be6e6c4f9e287672c8301b72bdabf3 (116 x RedLineStealer, 70 x AsyncRAT, 55 x AgentTesla)
ssdeep 98304:s5FZFRahZWzhyrtnWyi3Zr/1vPFIQxlK3INVQ0C+nh0kx6maKPbllI:sX3QZWVyrIbvnRL7hfIlWU
Threatray 1'621 similar samples on MalwareBazaar
TLSH T1E216331186D1D9B2E6B109355A3DBB08BA7CBA210D25CA5F73F40C2CD771690A77CBA3
TrID 89.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.5% (.EXE) Win64 Executable (generic) (10522/11/4)
2.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
1.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon c0e4a2a6a4bcbcf8 (6 x Loki, 4 x RemcosRAT, 4 x FormBook)
Reporter FXOLabs
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
540
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rProduct_Inquiry.exe
Verdict:
Malicious activity
Analysis date:
2025-06-02 08:42:18 UTC
Tags:
auto-reg crypto-regex confuser
Link:
https://app.any.run/tasks/a8b25a4b-97fe-4f49-9c47-6bb58290aad8

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/6849/
Detection(s):
SecuriteInfo.com.Troj.NanoCo_TZ.22029.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=683d5c00acf88f5815eb1eb4
Tags:
virus shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the %AppData% directory
Running batch commands
Creating a process from a recently created file
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %temp% directory
Creating a file
Creating a file in the %AppData% subdirectories
Launching a process
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint installer microsoft_visual_cc overlay overlay packed packer_detected sfx
Link:
https://www.filescan.io/uploads/683d5acafd02ed5e059328c4/reports/f62bd7ea-7470-483d-9052-42cef6edeb55/overview
Verdict:
Malicious
Labled as:
Malware_44.6
Link:
https://www.hybrid-analysis.com/sample/c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0ad699fe-c027-4292-b5aa-4f85f4debb29
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1703811
Signature
.NET source code contains potential unpacker
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses threadpools to delay analysis
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1703811 Sample: rProduct_Inquiry.exe Startdate: 02/06/2025 Architecture: WINDOWS Score: 100 98 twobyoneset.ydns.eu 2->98 100 ipwho.is 2->100 102 bg.microsoft.map.fastly.net 2->102 126 Found malware configuration 2->126 128 Malicious sample detected (through community Yara rule) 2->128 130 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->130 132 5 other signatures 2->132 14 rProduct_Inquiry.exe 9 2->14         started        17 msedge.exe 105 503 2->17         started        21 Client.exe 2->21         started        23 msedge.exe 2->23         started        signatures3 process4 dnsIp5 92 C:\Users\user\AppData\...\atgshfdjtc.sfx.exe, PE32 14->92 dropped 25 cmd.exe 1 14->25         started        27 msedge.exe 16 14->27         started        94 192.168.2.4, 138, 443, 4784 unknown unknown 17->94 96 239.255.255.250 unknown Reserved 17->96 122 Maps a DLL or memory area into another process 17->122 29 msedge.exe 17->29         started        32 msedge.exe 17->32         started        34 msedge.exe 17->34         started        38 2 other processes 17->38 124 Injects a PE file into a foreign processes 21->124 36 msedge.exe 23->36         started        file6 signatures7 process8 dnsIp9 40 atgshfdjtc.sfx.exe 7 25->40         started        44 conhost.exe 25->44         started        46 msedge.exe 27->46         started        108 13.107.246.57, 443, 49732 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 29->108 110 ax-0002.ax-msedge.net 150.171.27.11, 443, 49717, 49720 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 29->110 112 6 other IPs or domains 29->112 process10 file11 90 C:\Users\user\AppData\...\atgshfdjtc.exe, PE32 40->90 dropped 138 Multi AV Scanner detection for dropped file 40->138 48 atgshfdjtc.exe 40->48         started        signatures12 process13 signatures14 114 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 48->114 116 Uses schtasks.exe or at.exe to add and modify task schedules 48->116 118 Injects a PE file into a foreign processes 48->118 120 Uses threadpools to delay analysis 48->120 51 atgshfdjtc.exe 48->51         started        55 atgshfdjtc.exe 48->55         started        process15 file16 88 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 51->88 dropped 136 Hides that the sample has been downloaded from the Internet (zone.identifier) 51->136 57 Client.exe 51->57         started        60 schtasks.exe 51->60         started        62 Client.exe 55->62         started        64 schtasks.exe 55->64         started        signatures17 process18 signatures19 140 Injects a PE file into a foreign processes 57->140 142 Uses threadpools to delay analysis 57->142 66 Client.exe 57->66         started        70 Client.exe 57->70         started        72 conhost.exe 60->72         started        74 Client.exe 62->74         started        76 Client.exe 62->76         started        78 conhost.exe 64->78         started        process20 dnsIp21 104 twobyoneset.ydns.eu 196.251.115.164, 4784, 49742, 49765 xneeloZA Seychelles 66->104 106 ipwho.is 108.181.98.179, 443, 49747 ASN852CA Canada 66->106 134 Hides that the sample has been downloaded from the Internet (zone.identifier) 66->134 80 schtasks.exe 66->80         started        82 WerFault.exe 70->82         started        84 WerFault.exe 74->84         started        signatures22 process23 process24 86 conhost.exe 80->86         started       
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835/
Threat name:
Win32.Trojan.Malgent
Create hunting rule
Status:
Malicious
First seen:
2025-06-02 05:52:58 UTC
File Type:
PE (Exe)
Extracted files:
15
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yww5r7eh6unfzvzjp5rgxt734hk2mhotarozedn7qgvtlemnpa2q._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
0419d8d710c448dfba5fdb36f01cde6e702cf062a55e20a3ccac0dd54f71cbb3
QuasarRAT
13d03e8abe8c360196bf04e41e99da11292d08b126b47432a2c92ed2906b97cd
QuasarRAT
1cd404d186d756181584b2223e3fbdae156d968fccedcf32e3440822d148254f
QuasarRAT
2bdb87ec72b7d7735f116e40df23e9999bbc43a8f54d57a381aca468fbe8be79
QuasarRAT
3eb1cc1c92cffaf47f4a3eb039ab826b9902bc7bfc71b717e813945d420379a6
QuasarRAT
4c65995eb4e5814e553442d7a2e5d0c1345f1f16e08b499d3ef2e71a67c64bb4
QuasarRAT
57641aef77ca6506c2ae922b35261631de04da377750a3494acbf7ca8951ac9b
QuasarRAT
5a6efc81f1a3e1c8266cbacdeaf04ee400dfcc3bc5998c6df13e68ad6f51cdc7
QuasarRAT
d67bbbec297a07138c677c61f725d66464859461e54b8ffcb2ed622321cc8571
QuasarRAT
error
QuasarRAT
+ 1'611 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office01 discovery spyware trojan
Link:
https://tria.ge/reports/250602-jxvn6shp7w/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Enumerates system info in registry
Modifies data under HKEY_USERS
Modifies registry class
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
twobyoneset.ydns.eu:4784
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/01d61daa-402b-4b0c-82ea-00bd9a5455a7
Unpacked files
SH256 hash:
c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835
MD5 hash:
1ef2a44244e9ed357ef249439204593c
SHA1 hash:
afd9d34283450b259a0b8258b9248be6bfc7526f
Link:
https://www.unpac.me/results/e8323942-4f67-4ae1-b29d-4602d41beb73/
SH256 hash:
e96db6968d27cb9e26f4bb1db807a4b0ca777a552932b08cd67b183e936e3267
MD5 hash:
0dce67844366b107dd06298e27386c7b
SHA1 hash:
2d9f6f3df684ab821d54ad58dbeb421ac0679d09
Link:
https://www.unpac.me/results/e8323942-4f67-4ae1-b29d-4602d41beb73/
SH256 hash:
17ebf900c4478dd37d253f638076a720eef58963218b21b77d1c053ba2d89377
MD5 hash:
8ce1274b551ef0afe6f38e7e529a430e
SHA1 hash:
e8a2cfd9e2251a69a3fc6440385839dcd2d0617f
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_NET_NAME_ConfuserEx
Create hunting rule
INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
INDICATOR_EXE_Packed_ConfuserEx_Custom
Create hunting rule
Link:
https://www.unpac.me/results/e8323942-4f67-4ae1-b29d-4602d41beb73/
SH256 hash:
bc8000e168951be16faccead2f611f46da1d9693c0f3553e5fb90b0487e85a86
MD5 hash:
9c41a1653c70e5881becd29a5955e987
SHA1 hash:
7b8dddc6c106d3563113c1733f835ab1f5dd984e
Link:
https://www.unpac.me/results/e8323942-4f67-4ae1-b29d-4602d41beb73/
SH256 hash:
b97eac9552f86069999233bd310de2c43f76da4e678d5892dd2f4009f435bf7e
MD5 hash:
1a38e54c26f19d7dd6130ba07090ff83
SHA1 hash:
a2daeb3d012b193b9d27a6b3cf0be2660e8dfab3
Detections:
QuasarRAT
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
MAL_BackNet_Nov18_1
Create hunting rule
INDICATOR_EXE_Packed_Fody
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Link:
https://www.unpac.me/results/e8323942-4f67-4ae1-b29d-4602d41beb73/
Parent samples :
3a336deb4df669600491e2d9736f05f2b04b4eb11a25e082f3409a2fbfc12cf4
c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c5add8fc87f5/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/c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835

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:Check_Dlls
Create hunting rule
Rule name:Costura_Protobuf
Create hunting rule
Author:@bartblaze
Description:Identifies Costura and Protobuf in .NET assemblies, respectively for storing resources and (de)serialization. Seen together might indicate a suspect binary.
Rule name:dcrat_
Create hunting rule
Author:Michelle Khalil
Description:This rule detects unpacked dcrat malware samples.
Rule name:DebuggerCheck__API
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__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:MAL_BackNet_Nov18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects BackNet samples
Reference:https://github.com/valsov/BackNet
Rule name:MAL_BackNet_Nov18_1_RID2D6D
Create hunting rule
Author:Florian Roth
Description:Detects BackNet samples
Reference:https://github.com/valsov/BackNet
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MAL_QuasarRAT_May19_1_RID2E1E
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
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:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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.

Malspam

QuasarRAT

Executable exe c5add8fc87f51a5cd7297f626bcffbe1d5a61dd3045d920dbf81ab35918d7835

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/6849/

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
KERNEL32.dll::CreateThread
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::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileMappingW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW

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