MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 381d4a53dc6d69491c703d2f35888b64a675c2b3de8f6572720828dd428a359b. 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: 7
| SHA256 hash: | 381d4a53dc6d69491c703d2f35888b64a675c2b3de8f6572720828dd428a359b |
|---|---|
| SHA3-384 hash: | 576a56148cdc4546a926b0906bb6b60ba055a9e416ea79851d057fe6f30bd6f1f88e5dc2f574021a0872d2281d8df50c |
| SHA1 hash: | ec117a1a34d5ac947451451c852bca25825f5e7a |
| MD5 hash: | c20e7450524a9fe1c93bcc51c1518dd2 |
| humanhash: | pasta-connecticut-two-utah |
| File name: | sf_express_waybill_parcelArrival.docx.scr |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 771'720 bytes |
| First seen: | 2020-11-19 06:55:57 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 12288:YPVVpI8TAmPinSbDezulgLGk2gIxfEC7jA5dFyaRHWXVMbM4BCS:MTAmPiSbD+ff2gIxb7jydBzbP |
| Threatray | 134 similar samples on MalwareBazaar |
| TLSH | 57F429F494EB1061E26F4536669E7E4406F3B4C3AFE3696843BDE1711A9AB733B4100E |
| Reporter |  abuse_ch |
| Tags: | QuasarRAT scr |
Code Signing Certificate
| Organisation: | Eion Robb |
|---|---|
| Issuer: | DigiCert SHA2 Assured ID Code Signing CA |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | Jul 10 00:00:00 2018 GMT |
| Valid to: | Jun 12 12:00:00 2020 GMT |
| Serial number: | 0853E240A4892340FD6BA6D7E623DB18 |
| Intelligence: | 2 malware samples on MalwareBazaar are signed with this code signing certificate |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | B0C4CACD6FE8D49305E8FE298C65BFF6B42045E0CE32181BDF26946F8C1EE702 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
abuse_ch
Malspam distributing unidentified malware:HELO: mail.boljibiznis.com
Sending IP: 79.101.32.138
From: Martha Salim <nena.velickovic@boljibiznis.com>
Subject: Your Parcel Received Yesterday !
Attachment: sf_express_waybill_parcelArrival.docx.xlsx.img (contains "sf_express_waybill_parcelArrival.docx.scr")
Intelligence
File Origin
# of uploads :
1
# of downloads :
124
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Clean
Maliciousness:
Behaviour
Sending a UDP request
Creating a window
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: Suspicious Double Extension
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Backdoor.QuasarRAT
Status:
Malicious
First seen:
2020-11-19 03:50:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
19 of 28 (67.86%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 124 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar persistence spyware trojan
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Quasar RAT
Unpacked files
SH256 hash:
381d4a53dc6d69491c703d2f35888b64a675c2b3de8f6572720828dd428a359b
MD5 hash:
c20e7450524a9fe1c93bcc51c1518dd2
SHA1 hash:
ec117a1a34d5ac947451451c852bca25825f5e7a
SH256 hash:
fbfd41354933ddb2874a5a15b94d852f12396aab4ff036a44e7ac1f972d37620
MD5 hash:
8de6054a9e82c65b10c8236a1a476c92
SHA1 hash:
27d304b6306dc661971d7812877a9ab7339280f1
SH256 hash:
ba1fd1396ac8fc0a4903a40fc1361eb6deffa3e1545fade21c7ab9135b6d7da7
MD5 hash:
e4985b58049fba26e3cabbfbe882b74f
SHA1 hash:
1874cfbb6ebfe2be5631e59d7cabe8f26e005dac
SH256 hash:
83c08f0721c8b0c96e3d6a8f3ccaf5c96fbcc427d574625c34424c3429fefaa1
MD5 hash:
3c5dbcc3bb27e913e14efd8054811373
SHA1 hash:
b0eba9388abddaef9d5aa49ccd5dbab2924cced0
Malware family:
QuasarRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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