MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 56855ec2eaecac2dc657e738098edcf0146b6a82bd84a5205b7f85072264c38e. 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: 9


Intelligence 9 IOCs YARA 12 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 56855ec2eaecac2dc657e738098edcf0146b6a82bd84a5205b7f85072264c38e
SHA3-384 hash: 36871af1e44f39881f59c468b251e21046fbe52aa09d28b82d4af7ae47ae215e890049ed2029854f1bc96e26b71f5e75
SHA1 hash: 9012c69bacbdc540a87fa1f6a0ce224076dbe3ec
MD5 hash: bf6e195eaa1ed6b0d9a1ae7bd2e54aae
humanhash: six-uncle-comet-pasta
File name:INVOICE0090000.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:253'653 bytes
First seen:2021-05-21 06:08:36 UTC
Last seen:2021-05-21 08:00:19 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 099c0646ea7282d232219f8807883be0 (476 x Formbook, 210 x Loki, 107 x AgentTesla)
ssdeep 6144:TsZaoiG+6qmfW0C9vLGMhG0zkqohstzd3wSJK/2h:qNi76qmu0C9TNhGMohmh
Threatray 6'213 similar samples on MalwareBazaar
TLSH F744024661CDCCEBD48B1AB0A5EBD76092B27D894291131FA7E93F2F25250D3971E0CB
Reporter GovCERT_CH
Tags:QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
122
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
INVOICE0090000.exe
Verdict:
Malicious activity
Analysis date:
2021-05-21 06:25:36 UTC
Tags:
installer evasion stealer
Link:
https://app.any.run/tasks/3c9941b4-25f9-4851-887b-122abe908b17

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
PUA.Win.Trojan.Casino-141
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Sending a UDP request
Creating a file in the %AppData% subdirectories
Creating a window
Setting a keyboard event handler
Launching a process
Reading critical registry keys
Using the Windows Management Instrumentation requests
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Creating a process from a recently created file
Creating a process with a hidden window
Deleting a recently created file
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Result
Verdict:
MALICIOUS
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:
StormKitty
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/786936
Signature
Antivirus detection for dropped file
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
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 video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses process hollowing technique
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Yara detected Generic Dropper
Yara detected StormKitty Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 419333 Sample: INVOICE0090000.exe Startdate: 21/05/2021 Architecture: WINDOWS Score: 100 56 123.105.12.0.in-addr.arpa 2->56 58 icanhazip.com 2->58 60 api.mylnikov.org 2->60 78 Malicious sample detected (through community Yara rule) 2->78 80 Multi AV Scanner detection for submitted file 2->80 82 Yara detected StormKitty Stealer 2->82 84 5 other signatures 2->84 9 INVOICE0090000.exe 1 23 2->9         started        13 pqyrrveabj.exe 18 2->13         started        15 pqyrrveabj.exe 9 2->15         started        signatures3 process4 file5 46 C:\Users\user\AppData\...\pqyrrveabj.exe, PE32 9->46 dropped 48 C:\Users\user\AppData\Local\...\System.dll, PE32 9->48 dropped 102 Detected unpacking (changes PE section rights) 9->102 104 Detected unpacking (overwrites its own PE header) 9->104 106 Maps a DLL or memory area into another process 9->106 17 INVOICE0090000.exe 1 3 9->17         started        50 C:\Users\user\AppData\Local\Temp\pvhrelkjvj, DOS 13->50 dropped 52 C:\Users\user\AppData\Local\...\System.dll, PE32 13->52 dropped 108 Multi AV Scanner detection for dropped file 13->108 110 Machine Learning detection for dropped file 13->110 20 pqyrrveabj.exe 1 13->20         started        signatures6 process7 signatures8 74 Sample uses process hollowing technique 17->74 76 Installs a global keyboard hook 17->76 22 InstallUtil.exe 15 7 17->22         started        26 InstallUtil.exe 17->26         started        29 InstallUtil.exe 6 17->29         started        31 InstallUtil.exe 20->31         started        33 InstallUtil.exe 20->33         started        process9 dnsIp10 62 123.105.12.0.in-addr.arpa 22->62 64 api.mylnikov.org 104.21.9.139, 443, 49732, 49759 CLOUDFLARENETUS United States 22->64 66 icanhazip.com 172.67.9.138, 49731, 49758, 49769 CLOUDFLARENETUS United States 22->66 92 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 22->92 94 May check the online IP address of the machine 22->94 96 Tries to steal Instant Messenger accounts or passwords 22->96 35 MZ.exe 3 22->35         started        68 123.105.12.0.in-addr.arpa 26->68 70 104.22.19.188, 49767, 80 CLOUDFLARENETUS United States 26->70 54 C:\Users\user\AppData\Roaming\...\MZ.exe, PE32 26->54 dropped 98 Tries to steal Mail credentials (via file access) 26->98 100 Tries to harvest and steal browser information (history, passwords, etc) 26->100 38 MZ.exe 26->38         started        72 123.105.12.0.in-addr.arpa 29->72 40 MZ.exe 29->40         started        42 WerFault.exe 31->42         started        44 WerFault.exe 33->44         started        file11 signatures12 process13 signatures14 86 Antivirus detection for dropped file 35->86 88 Multi AV Scanner detection for dropped file 35->88 90 Machine Learning detection for dropped file 35->90
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/56855ec2eaecac2dc657e738098edcf0146b6a82bd84a5205b7f85072264c38e/
Threat name:
Win32.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2021-05-21 05:40:44 UTC
AV detection:
12 of 46 (26.09%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k2cv5qxk5swc3rsx444atdw46akgw2ucxwckkic3p6cqoiteyoha._file
Verdict:
unknown
Similar samples:
041e611b0ba792d4d87d0be0a36bbc90448598e84b40f669b8fef3acdfee0eee
QuasarRAT
2233af88b1f14a01921806ef1c91df8a7686d898c03fb700144d0d6c2feb374b
QuasarRAT
54b874aa168963924382bcadb4e63d087c7dbf587a52f16df9efa19157f700b2
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6cfdddc8b055363cd05d298507c98726cfc8c087109e27d4ef98a29011c93a55
QuasarRAT
74d5a7052ca7168700158a9f7c8c15f37c99355e1b84dc5a73724d605bd35604
QuasarRAT
9c78146f4a627174c179d84b1069dad2eb688db691b637793d3285595b773120
QuasarRAT
a84fdf2c7dbfe8009f998273a7ff9e51c440ea3daa1b93d5b29b3a8e71b35a25
QuasarRAT
ba3269a5f9ef184b1c62c8e103f24c32b45d3f5ea57f205d012ee7bdbf7f9649
QuasarRAT
c17f2f850aaa509e5cd9182eb9e9bfd636bff9307b53d29fd6ed831707eaf7a7
QuasarRAT
cc4c6be7a609aaaabf82ae1cd164c567ff7f7cc1ebdb59175d0ae1ecbac74b5c
QuasarRAT
+ 6'203 additional samples on MalwareBazaar
Result
Malware family:
stormkitty
Create hunting rule
Score:
  10/10
Tags:
family:stormkitty persistence spyware stealer
Link:
https://tria.ge/reports/210521-k36g3vr83j/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Loads dropped DLL
Reads local data of messenger clients
Reads user/profile data of web browsers
Executes dropped EXE
StormKitty
StormKitty Payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Eldorado
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/56855ec2eaecac2dc657e738098edcf0146b6a82bd84a5205b7f85072264c38e

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_StormKitty
Create hunting rule
Author:ditekSHen
Description:Detects StormKitty infostealer
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:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Stealer_word_in_memory
Create hunting rule
Author:James_inthe_box
Description:The actual word stealer in memory

File information

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

Malspam

QuasarRAT

Executable exe 56855ec2eaecac2dc657e738098edcf0146b6a82bd84a5205b7f85072264c38e

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-21 07:13:26 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
3) [C0045] File System Micro-objective::Copy File
4) [C0046] File System Micro-objective::Create Directory
5) [C0048] File System Micro-objective::Delete Directory
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0051] File System Micro-objective::Read File
9) [C0050] File System Micro-objective::Set File Attributes
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
13) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
14) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
15) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
16) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
17) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
18) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
19) [C0017] Process Micro-objective::Create Process
20) [C0038] Process Micro-objective::Create Thread
21) [C0018] Process Micro-objective::Terminate Process