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| File name: | QuasarC.exe |
| Full analysis: | https://app.any.run/tasks/d06dafff-55ca-41c6-aad9-3fd3f02d3b95 |
| Verdict: | Malicious activity |
| Threats: | Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim’s computer remotely. |
| Analysis date: | October 04, 2022, 19:50:15 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 0A17BBB7F9E9E926E5261DC4DAEEE377 |
| SHA1: | 6A51F008CC7062DF7FC59FDDA3F9A39FD6BAB080 |
| SHA256: | 67C512C79E644939054280E21BD35471541491A057071BB75FFDEF77F9123EE4 |
| SSDEEP: | 6144:LTEgdc0YaX1uRabMR0FBifUdTEDUK5DkQfocEbOb8F90bLQ8+mWOJHicTR3z:LTEgdfYnRaUVDkrpuXQ8LWOJHicdz |
MALICIOUS
QUASAR detected by memory dumps
- QuasarC.exe (PID: 3248)
SUSPICIOUS
Reads the computer name
- QuasarC.exe (PID: 3248)
Checks supported languages
- QuasarC.exe (PID: 3248)
Reads Environment values
- QuasarC.exe (PID: 3248)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Quasar
(PID) Process(3248) QuasarC.exe
CertificateMIIE9DCCAtygAwIBAgIQAJ4llRq8JQY0wmjnJVl2PTANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTIxMDIxNTE5MzkyM1oYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvCqtV0YQA5V8NOXJwELxTtrTiTzRxhC3fevE5dP2pdo7IjTapGYdlP+MBdfyXlCzOBjhVwMC...
SignatureguPozmzkVfEuIF1O6xqesUZCe2FCzakFWhxAyU47oCGRKJgpEdFAQz+2IoUHL7c24Kc7wIb7zwc8AzutbbJKLJx5w/HFZisVjwBUOA5CFBEwQW8Oy9x/f+SYCe2fRaJrP+T2/T0ebsKw3ImTduCVvd+YwMgmbK1IhbQBIAJNA5nEz2AxfyDDRenUQd/rYiVBL1wmxKcUK9dh0SXK/0H5PEN+DUj9xLVOQpnUQAclmhAowiHdicdEjUYVb36NF8k/2JnSWHtOxqaif033aroWb9/nR/mn+Epbgv4GILNx8AQX...
LogDirLogs
TagVictim
StartupMicrosoft Update
Mutex4dbcd21e-96b1-4a68-9a7e-3d591e23d891
Install_NameMicroUpdate.exe
Sub_DirSubDir
C2 (4)rtts.ddns.net:55001
127.0.0.1:55001
192.168.100.8:55001
Version1.4.0
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 2020-Jun-05 15:59:49 |
| Comments: | - |
| CompanyName: | Microsoft Inc. |
| FileDescription: | The official update service |
| FileVersion: | 4.5.552.1 |
| InternalName: | MicrosoftUpdateService |
| LegalCopyright: | Microsoft Inc. |
| LegalTrademarks: | Microsoft Inc. |
| OriginalFilename: | MicrosoftUpdateService |
| ProductName: | MicrosoftUpdateService |
| ProductVersion: | 4.5.552.1 |
| Assembly Version: | 4.5.552.1 |
DOS Header
| e_magic: | MZ |
|---|---|
| e_cblp: | 144 |
| e_cp: | 3 |
| e_crlc: | - |
| e_cparhdr: | 4 |
| e_minalloc: | - |
| e_maxalloc: | 65535 |
| e_ss: | - |
| e_sp: | 184 |
| e_csum: | - |
| e_ip: | - |
| e_cs: | - |
| e_ovno: | - |
| e_oemid: | - |
| e_oeminfo: | - |
| e_lfanew: | 128 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| NumberofSections: | 3 |
| TimeDateStamp: | 2020-Jun-05 15:59:49 |
| PointerToSymbolTable: | - |
| NumberOfSymbols: | - |
| SizeOfOptionalHeader: | 224 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 8192 | 509956 | 510464 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.16259 |
.rsrc | 524288 | 2876 | 3072 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.13535 |
.reloc | 532480 | 12 | 512 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 3.37668 | 964 | Latin 1 / Western European | UNKNOWN | RT_VERSION |
1 (#2) | 5.18029 | 1751 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
32
Monitored processes
1
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3248 | "C:\Users\admin\AppData\Local\Temp\QuasarC.exe" | C:\Users\admin\AppData\Local\Temp\QuasarC.exe | Explorer.EXE | |
User: admin Company: Microsoft Inc. Integrity Level: MEDIUM Description: The official update service Version: 4.5.552.1 Quasar(PID) Process(3248) QuasarC.exe CertificateMIIE9DCCAtygAwIBAgIQAJ4llRq8JQY0wmjnJVl2PTANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTIxMDIxNTE5MzkyM1oYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAvCqtV0YQA5V8NOXJwELxTtrTiTzRxhC3fevE5dP2pdo7IjTapGYdlP+MBdfyXlCzOBjhVwMC... SignatureguPozmzkVfEuIF1O6xqesUZCe2FCzakFWhxAyU47oCGRKJgpEdFAQz+2IoUHL7c24Kc7wIb7zwc8AzutbbJKLJx5w/HFZisVjwBUOA5CFBEwQW8Oy9x/f+SYCe2fRaJrP+T2/T0ebsKw3ImTduCVvd+YwMgmbK1IhbQBIAJNA5nEz2AxfyDDRenUQd/rYiVBL1wmxKcUK9dh0SXK/0H5PEN+DUj9xLVOQpnUQAclmhAowiHdicdEjUYVb36NF8k/2JnSWHtOxqaif033aroWb9/nR/mn+Epbgv4GILNx8AQX... LogDirLogs TagVictim StartupMicrosoft Update Mutex4dbcd21e-96b1-4a68-9a7e-3d591e23d891 Install_NameMicroUpdate.exe Sub_DirSubDir C2 (4)rtts.ddns.net:55001 127.0.0.1:55001 192.168.100.8:55001 Version1.4.0 | ||||
Total events
210
Read events
196
Write events
14
Delete events
0
Modification events
| (PID) Process: | (3248) QuasarC.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\16C\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
Executable files
0
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
0
DNS requests
0
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report