MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcb4317b98851359e0944bca29b79b95069899ec7b11be9b9bb06efaf6cc2a17. 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: 13


Intelligence 13 IOCs YARA 21 File information Comments
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SHA256 hash: bcb4317b98851359e0944bca29b79b95069899ec7b11be9b9bb06efaf6cc2a17
SHA3-384 hash: c07cf39c9354d11a39bf94b903c99075d3db4dd657d7709303225c7d8302d59b48122940e6bfac28877a7c145b10dee0
SHA1 hash: 77e45c4c680cd56c4976b41923bd373418082826
MD5 hash: d9ddddd14be8961e0f1450b3e3d421cf
humanhash: beryllium-ink-one-red
File name:Comprobante_de_Pago.exe
Download: download sample
Signature QuasarRAT
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File size:1'741'249 bytes
First seen:2023-01-11 06:53:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 00be6e6c4f9e287672c8301b72bdabf3 (116 x RedLineStealer, 70 x AsyncRAT, 55 x AgentTesla)
ssdeep 24576:jNA3R5drXj1DNruhxqz1j1LpGyw0yMEfh/vv2wi76MfjxsWYEljyWmyyoYC7XgZk:O5hpruCF/NEfVupjeGjMyyKwZiGfc
TLSH T1E8852242F6D184B1C9761931197AAB65B8BD7D700E34CAAFB3C81D78CE36191A630B73
TrID 89.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.5% (.EXE) Win64 Executable (generic) (10523/12/4)
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) (4505/5/1)
File icon (PE):PE icon
dhash icon 44404e4e0d330000 (1 x QuasarRAT)
Reporter lowmal3
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
180
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
Comprobante_de_Pago.exe
Verdict:
Malicious activity
Analysis date:
2023-01-11 06:54:15 UTC
Tags:
evasion trojan quasar
Link:
https://app.any.run/tasks/aedef427-5a00-4ff7-adb6-1d608cabaa73

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/351814/
Detection(s):
SecuriteInfo.com.Troj.NanoCo_TZ.22029.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Running batch commands
Creating a process from a recently created file
Launching a process
Launching a service
Using the Windows Management Instrumentation requests
Changing a file
Delayed writing of the file
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Query of malicious DNS domain
Sending an HTTP GET request to an infection source
Verdict:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
greyware overlay packed setupapi.dll shdocvw.dll shell32.dll
Link:
https://www.filescan.io/uploads/63be5d0c0e926711fd789772/reports/afc99899-aa3f-4e2d-a966-400801990e7e/overview
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/abc51dfd-e190-4c69-aabf-6fca03294025
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1149390
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 782122 Sample: Comprobante_de_Pago.exe Startdate: 11/01/2023 Architecture: WINDOWS Score: 100 68 Snort IDS alert for network traffic 2->68 70 Multi AV Scanner detection for domain / URL 2->70 72 Malicious sample detected (through community Yara rule) 2->72 74 6 other signatures 2->74 13 Comprobante_de_Pago.exe 9 2->13         started        16 egfhzf.exe 2->16         started        process3 file4 52 C:\Users\user\AppData\Local\egfhzf.sfx.exe, PE32 13->52 dropped 18 cmd.exe 1 13->18         started        20 egfhzf.exe 16->20         started        process5 process6 22 egfhzf.sfx.exe 7 18->22         started        25 conhost.exe 18->25         started        file7 50 C:\Users\user\AppData\Local\egfhzf.exe, PE32 22->50 dropped 27 egfhzf.exe 1 22->27         started        process8 signatures9 86 Antivirus detection for dropped file 27->86 88 Multi AV Scanner detection for dropped file 27->88 90 May check the online IP address of the machine 27->90 92 3 other signatures 27->92 30 egfhzf.exe 15 4 27->30         started        process10 dnsIp11 62 ip-api.com 208.95.112.1, 49712, 49715, 80 TUT-ASUS United States 30->62 64 192.168.2.1 unknown unknown 30->64 54 C:\Users\user\AppData\Roaming\mci\mca.exe, PE32 30->54 dropped 66 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->66 35 mca.exe 1 30->35         started        38 schtasks.exe 1 30->38         started        file12 signatures13 process14 signatures15 76 Antivirus detection for dropped file 35->76 78 Multi AV Scanner detection for dropped file 35->78 80 May check the online IP address of the machine 35->80 82 Machine Learning detection for dropped file 35->82 40 mca.exe 14 2 35->40         started        44 conhost.exe 38->44         started        process16 dnsIp17 56 dnuocc.com 195.133.40.200, 49717, 49718, 49719 SPD-NETTR Russian Federation 40->56 58 www.dnuocc.com 40->58 60 ip-api.com 40->60 84 Hides that the sample has been downloaded from the Internet (zone.identifier) 40->84 46 schtasks.exe 40->46         started        signatures18 process19 process20 48 conhost.exe 46->48         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bcb4317b98851359e0944bca29b79b95069899ec7b11be9b9bb06efaf6cc2a17/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2023-01-10 15:41:36 UTC
File Type:
PE (Exe)
Extracted files:
15
AV detection:
19 of 39 (48.72%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xs2dc64yqujvtyeujpfctn43sudjrgpmpmi35g43wbxpv5wmfilq._file
Verdict:
malicious
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:miow2 spyware trojan
Link:
https://tria.ge/reports/230111-hn8n1aef31/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
dnuocc.com:64594
www.dnuocc.com:64594
dnuocc.com:64588
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9d318861-68e0-4a27-af77-82e1aa3ee506
Unpacked files
SH256 hash:
5d1f7f4ae368c49852ed02facbd1a2e8207d99befab8a20571d0b2ba0393e92d
MD5 hash:
6b62393772275436b712140193c4164e
SHA1 hash:
e886af7f7f6d2fe22f0c9b893728aabb0adcda9f
Link:
https://www.unpac.me/results/79751805-204a-4d6a-b8ec-b64538dcab13/
SH256 hash:
cf5f0add8a277207cd41064032107f1f50faca794f29b8bb4033774bfe1c6952
MD5 hash:
d7ff7512a6babc57371b51166e2afe23
SHA1 hash:
cf929ca524e88cae8dfeb7af73e1e2365d7a1118
Link:
https://www.unpac.me/results/79751805-204a-4d6a-b8ec-b64538dcab13/
SH256 hash:
cf656c46519ca3b69b04803222a77c359f9e7f892b07a1ca3189498c4edac86f
MD5 hash:
8c3991c4453d31d384d49de370f78f0b
SHA1 hash:
0082603edee2fdb661b158cf997ccd1465b62209
Link:
https://www.unpac.me/results/79751805-204a-4d6a-b8ec-b64538dcab13/
SH256 hash:
bcb4317b98851359e0944bca29b79b95069899ec7b11be9b9bb06efaf6cc2a17
MD5 hash:
d9ddddd14be8961e0f1450b3e3d421cf
SHA1 hash:
77e45c4c680cd56c4976b41923bd373418082826
Link:
https://www.unpac.me/results/79751805-204a-4d6a-b8ec-b64538dcab13/
Malware family:
xRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bcb4317b9885/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/bcb4317b98851359e0944bca29b79b95069899ec7b11be9b9bb06efaf6cc2a17

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:CN_disclosed_20180208_KeyLogger_1
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:CN_disclosed_20180208_KeyLogger_1_RID3227
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
Author:ditekSHen
Description:Detects executables containing common artifcats observed in infostealers
Rule name:malware_Quasar_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:MALWARE_Win_QuasarRAT
Create hunting rule
Author:ditekSHen
Description:QuasarRAT payload
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Author:Florian Roth
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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:Quasar_RAT_1
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_1_RID2B54
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2_RID2B55
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:sfx_pdb
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.
Rule name:sfx_pdb_winrar_restrict
Create hunting rule
Author:@razvialex
Description:Detect interesting files containing sfx with pdb paths.
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Vermin_Keylogger_Jan18_1
Create hunting rule
Author:Florian Roth
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:Windows_Trojan_Quasarrat_e52df647
Create hunting rule
Author:Elastic Security
Rule name:xRAT_1
Create hunting rule
Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W
Rule name:xRAT_1_RID2900
Create hunting rule
Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W

File information

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

Malspam

QuasarRAT

Executable exe bcb4317b98851359e0944bca29b79b95069899ec7b11be9b9bb06efaf6cc2a17

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/351814/

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