MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 42b8be731007bfe95a319be6726441e9da0504048f8402beabaabf712db3f3ef. 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


AsyncRAT


Vendor detections: 14


Intelligence 14 IOCs 1 YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 42b8be731007bfe95a319be6726441e9da0504048f8402beabaabf712db3f3ef
SHA3-384 hash: 1f51f7447195b09e47795002fb30574a3cec658e278471ad3c97cac327f14fcb834ae0a4f2723e7268f74927c498c55d
SHA1 hash: 07474ada9bce1cfea2a87111ba027e418eb8d55f
MD5 hash: f80cf6cad38b9bb0e964ca485c4f52d9
humanhash: lamp-oscar-item-fourteen
File name:f80cf6cad38b9bb0e964ca485c4f52d9
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:570'880 bytes
First seen:2021-11-26 00:39:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:4M4CHVlM3lDmoabUlBzGWRT4pewNaScBF5HjQ8GYrWj:4O1lM3UoabUnXRNwNaSctMX
Threatray 2'440 similar samples on MalwareBazaar
TLSH T157C4632C7E058972EE1ED070886A86E47F120E5F6741696A13EB3EC7F76F2591CC9C84
File icon (PE):PE icon
dhash icon 71f0c08888c0e070 (9 x SnakeKeylogger, 9 x AgentTesla, 8 x AsyncRAT)
Reporter zbetcheckin
Tags:32 AsyncRAT exe

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
185.19.85.149:4898 https://threatfox.abuse.ch/ioc/254830/

Intelligence

File Origin
# of uploads :
1
# of downloads :
156
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f80cf6cad38b9bb0e964ca485c4f52d9
Verdict:
Malicious activity
Analysis date:
2021-11-26 00:41:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8572a325-968b-4d3c-8a38-33895be333d6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
SecuriteInfo.com.Trojan.DownLoader44.5306.11839.13167.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Sending a custom TCP request
Launching a process
Running batch commands
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed strictor
Link:
https://www.filescan.io/uploads/61a02ce9f36138de3f3d9dab/reports/19970231-b709-4893-a1b1-1f632b15aaf0/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ee948cae-8e50-4ae9-beb1-2068302ffcc8
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/896418
Signature
.NET source code contains potential unpacker
Binary or sample is protected by dotNetProtector
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to delay execution (extensive OutputDebugStringW loop)
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
Writes to foreign memory regions
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 528896 Sample: 4SJILHh9lK Startdate: 26/11/2021 Architecture: WINDOWS Score: 100 47 Found malware configuration 2->47 49 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 5 other signatures 2->53 7 f.exe 2 2->7         started        10 4SJILHh9lK.exe 3 2->10         started        process3 signatures4 57 Multi AV Scanner detection for dropped file 7->57 59 Machine Learning detection for dropped file 7->59 61 Writes to foreign memory regions 7->61 63 Injects a PE file into a foreign processes 7->63 12 cmd.exe 1 7->12         started        14 cmd.exe 1 7->14         started        16 vbc.exe 3 7->16         started        65 Tries to delay execution (extensive OutputDebugStringW loop) 10->65 18 cmd.exe 3 10->18         started        21 cmd.exe 1 10->21         started        24 vbc.exe 2 10->24         started        process5 dnsIp6 27 conhost.exe 12->27         started        29 schtasks.exe 1 12->29         started        31 conhost.exe 14->31         started        39 C:\Users\user\AppData\Roaming\f\f.exe, PE32 18->39 dropped 41 C:\Users\user\...\f.exe:Zone.Identifier, ASCII 18->41 dropped 33 conhost.exe 18->33         started        55 Uses schtasks.exe or at.exe to add and modify task schedules 21->55 35 conhost.exe 21->35         started        37 schtasks.exe 1 21->37         started        43 185.19.85.149, 4898, 49753, 49765 DATAWIRE-ASCH Switzerland 24->43 45 127.0.0.1 unknown unknown 24->45 file7 signatures8 process9
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/42b8be731007bfe95a319be6726441e9da0504048f8402beabaabf712db3f3ef/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2021-11-25 01:24:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
93
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ik4l44yqa676swrrtpthezcb5hnakbaer6cafpvlvk7xclnt6pxq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Similar samples:
6776c42da9ff39df7f76649d5ad287ff628790e84c7bebf325cb9b8c2e74aeb2
AsyncRAT
91512a6af5a6f62bd3348e28a4920a88bdaed4732ca9afcb956f0ca8c16d734f
AsyncRAT
ac601a34b6e00a6409580aa29283f241b44a33785757354c846b3df4a3bf676f
AsyncRAT
c92748428af1806d4ecc702bce8ad9abcac6b738e7208d3586450cb4944a87a9
AsyncRAT
f051b1c9df37c1d4236c98b54883d4005572910949a1be18ab6ead13754147dc
AsyncRAT
f20d2b9da240b7cadb6045a4152636c7cb71b13204aaae35e4a927aaeab23520
AsyncRAT
fcd5fc495b4f81bf91491b52e1759cf93794bf135fed6469a5d1e0663dfb6c3e
AsyncRAT
+ 2'430 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Link:
https://tria.ge/reports/211126-az9fnscgg5/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
127.0.0.1:4898
185.19.85.149:6606
185.19.85.149:7707
185.19.85.149:8808
185.19.85.149:4898
Unpacked files
SH256 hash:
b990c9e8ab807f7854e5584b48e42365aac2eba6c186187353a9a1c7b5134877
MD5 hash:
67137374a89d824453b9d570f57c7643
SHA1 hash:
13092e43c115845b97f98dbc7367ace9677b1960
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/78e0d5d9-565b-4717-a6f2-99b0b5c76338/
SH256 hash:
42b8be731007bfe95a319be6726441e9da0504048f8402beabaabf712db3f3ef
MD5 hash:
f80cf6cad38b9bb0e964ca485c4f52d9
SHA1 hash:
07474ada9bce1cfea2a87111ba027e418eb8d55f
Link:
https://www.unpac.me/results/78e0d5d9-565b-4717-a6f2-99b0b5c76338/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/42b8be731007/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/42b8be731007bfe95a319be6726441e9da0504048f8402beabaabf712db3f3ef

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:INDICATOR_EXE_Packed_Dotfuscator
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with Dotfuscator
Rule name:INDICATOR_EXE_Packed_dotNetProtector
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with dotNetProtector
Rule name:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

AsyncRAT

Executable exe 42b8be731007bfe95a319be6726441e9da0504048f8402beabaabf712db3f3ef

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/209548/
  
URLhaus
https://urlhaus.abuse.ch/url/1818186/

Comments


Avatar
zbet commented on 2021-11-26 00:39:46 UTC

url : hxxp://ututnimo.xyz/dontdeletecrypt.exe