MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07
SHA3-384 hash: dda7ce4a88ef017f3b869b916032aeb02861ccc78385cf533d183279b9f79077c6f822b94c34f5accf828c5419c5291d
SHA1 hash: b9f296549a42129454011b17e958ef44c9ecfc9a
MD5 hash: 1a072cc61c7f36a6dbc31e405e867646
humanhash: eight-oklahoma-seventeen-item
File name:PO -27-59 OCT.xlxs.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:1'948'160 bytes
First seen:2020-10-11 07:58:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:MsNpNIjHYezrJM2SW+xGjoBvyX7hN373mjPcURrq:MmpeDrO29kGjcyHuf9
Threatray 634 similar samples on MalwareBazaar
TLSH 1E953B1629C340A4C884AA3AD7BC55DD63F177DF3640976F26075BE8EE0219F760B0AB
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
Malspam distributing AsyncRAT:

HELO: server.doklsa.us
Sending IP: 185.249.197.82
From: Charlotte <contact@systek.co.th>
Subject: PO 27-059
Attachment: PO -27-59 OCT.xlxs.tbz2 (contains "PO -27-59 OCT.xlxs.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
137
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Azorult
Create hunting rule
Link:
https://www.capesandbox.com/analysis/69815/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file
Launching cmd.exe command interpreter
Creating a process with a hidden window
Creating a process from a recently created file
Running batch commands
Launching a process
DNS request
Unauthorized injection to a recently created process
Connection attempt to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Sending an HTTP POST request to an infection source
Result
Threat name:
AsyncRAT Azorult
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/487658
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Drops PE files to the document folder of the user
Found many strings related to Crypto-Wallets (likely being stolen)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected AsyncRAT
Yara detected Azorult
Yara detected Azorult Info Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 296270 Sample: PO -27-59 OCT.xlxs.exe Startdate: 11/10/2020 Architecture: WINDOWS Score: 100 70 Malicious sample detected (through community Yara rule) 2->70 72 Yara detected Azorult 2->72 74 Yara detected AntiVM_3 2->74 76 7 other signatures 2->76 11 PO -27-59 OCT.xlxs.exe 3 2->11         started        15 photo8.exe 2->15         started        17 phil01.exe 2->17         started        process3 file4 64 C:\Users\user\Documents\az66.exe, PE32 11->64 dropped 86 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->86 19 cmd.exe 1 11->19         started        21 cmd.exe 1 11->21         started        23 cmd.exe 2 11->23         started        88 Writes to foreign memory regions 15->88 90 Allocates memory in foreign processes 15->90 92 Injects a PE file into a foreign processes 15->92 26 mscorsvw.exe 15->26         started        28 InstallUtil.exe 17->28         started        signatures5 process6 file7 30 az66.exe 2 19->30         started        33 conhost.exe 19->33         started        35 phil01.exe 3 21->35         started        37 conhost.exe 21->37         started        62 C:\Users\user\Music\phil01.exe, PE32 23->62 dropped 39 conhost.exe 23->39         started        41 WerFault.exe 26->41         started        process8 signatures9 94 Multi AV Scanner detection for dropped file 30->94 96 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->96 43 cmd.exe 1 30->43         started        45 cmd.exe 2 30->45         started        98 Writes to foreign memory regions 35->98 100 Allocates memory in foreign processes 35->100 102 Injects a PE file into a foreign processes 35->102 48 InstallUtil.exe 35->48         started        process10 dnsIp11 51 photo8.exe 3 43->51         started        54 conhost.exe 43->54         started        66 C:\Users\user\Pictures\photo8.exe, PE32 45->66 dropped 56 conhost.exe 45->56         started        68 185.244.30.121, 49741, 49743, 49749 DAVID_CRAIGGG Netherlands 48->68 file12 process13 signatures14 78 Multi AV Scanner detection for dropped file 51->78 80 Writes to foreign memory regions 51->80 82 Allocates memory in foreign processes 51->82 84 2 other signatures 51->84 58 mscorsvw.exe 51->58         started        process15 process16 60 WerFault.exe 58->60         started       
Detection:
azorult
Create hunting rule
Link:
https://mwdb.cert.pl/sample/74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07/
Threat name:
ByteCode-MSIL.Trojan.Bluteal
Create hunting rule
Status:
Malicious
First seen:
2020-10-10 12:31:06 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=osaxzkejer54zw2nbsmmmcgqx5djckt5dtyaxjb4a4hzbezsnidq._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
azorult
Create hunting rule
Similar samples:
17c38ccce635b7567fb09e4e48c53b5661bdd29e827917a447f0de7741694d71
AsyncRAT
37b2228868b961b5d3c37d001a09de919aefe488440d06d12c617ad6e72c79c9
AsyncRAT
51ecbaefb0c7b17ea97e6c220edea153b3a787b97ba1000c43dfc7af9e3c785f
AsyncRAT
8adeeedad895d174c55f2d43c1985ff77fc533975cfde64f8dfd99782e4c4b9f
AsyncRAT
aa63e56d3e1f41d5989dc284148c75068d7bb57d8e1141f2f2ea88718df5d814
AsyncRAT
c2e6a6a4dcceeb65c2b769b92223c4b5c6de325709146391a4863dd56f4eb3d1
AsyncRAT
c578d33e132ccbbc26a4a31e6054fea7f42591b391e9b8eb30eaf732ed119088
AsyncRAT
c7cb970a67b5c370741e139dda48d47433477ab400e51a62a99b7a379a6c0dbc
AsyncRAT
e7c0c0108074647bb7a3c9d976c478e3fdbb047a910af9d988057508cec4dd8c
AsyncRAT
ee5dbfca30be494b6ad8ac1c18255b6054339de4aba768180a1f32e9921a30ce
AsyncRAT
+ 624 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
rat trojan infostealer family:azorult family:asyncrat
Link:
https://tria.ge/reports/201011-gejjp5fvhj/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Drops startup file
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Azorult
Malware Config
C2 Extraction:
185.244.30.121:7882
http://fentuys.com/dcmlks/index.php
Unpacked files
SH256 hash:
74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07
MD5 hash:
1a072cc61c7f36a6dbc31e405e867646
SHA1 hash:
b9f296549a42129454011b17e958ef44c9ecfc9a
Link:
https://www.unpac.me/results/ca2ab679-cc0c-4993-bfe3-6049fa1fad95/
SH256 hash:
8f5e78d43bc15648994f58b9e4393baf885ee7276f4345064260caf020e70744
MD5 hash:
5dede0541a5f897bfd15da6c82948e75
SHA1 hash:
6fc94fdf29285d413d6a318d1e76d1fb191c6eac
Link:
https://www.unpac.me/results/ca2ab679-cc0c-4993-bfe3-6049fa1fad95/
SH256 hash:
d12142b06f2ae04c12d5ef6a654df3b8cb2abfeb171da8ad2bf78f09ac26e21b
MD5 hash:
a98188005fbe8e5aefa2034c4e570b6d
SHA1 hash:
8abdbbf37c6f8401eead5f73a4ebe90d8bd7eec0
Link:
https://www.unpac.me/results/ca2ab679-cc0c-4993-bfe3-6049fa1fad95/
SH256 hash:
a761da31aaf6b06a357cd6f951af7ae55ceddf86fc48bad2b3b418133c01b3c9
MD5 hash:
f5fe2c13ca1642eca9f10bb4de385d76
SHA1 hash:
9f49e87fd6570fb0895d552180bb8d03fa8c5fc8
Link:
https://www.unpac.me/results/ca2ab679-cc0c-4993-bfe3-6049fa1fad95/
SH256 hash:
2193d424f3e233a02161804c9d87185c5ffff2963e69efb522810a8696fc5a2e
MD5 hash:
4228e889825561251c7ff369da9069d5
SHA1 hash:
fc1b2809aa648c4d4c48bad5937db208623f4b55
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/ca2ab679-cc0c-4993-bfe3-6049fa1fad95/
Parent samples :
c578d33e132ccbbc26a4a31e6054fea7f42591b391e9b8eb30eaf732ed119088
74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07
d7448da27fa5cbe7df2df781ef5763cdcbb31f6e99d756a03fb1ff577e7043a2
55b779f35f7ba5b7e409de245f0c6c8c2f7f38292f7d33b42e65f1fe4cbe6ee9
e9fb11df00c7a833b875f7c68fc6d5ee3edeeac7c63d85fc4897f6aef7596f7c
75b28b1c5a969011567d3300a309043511de798a302a2424e0f1d3ad384b29de
SH256 hash:
2d9b788c29ebf25c35261d8e8d4feda494c251b32fb7a710b42b1d8907671b1c
MD5 hash:
d7351e291ebc63cce849b67f03058cfe
SHA1 hash:
670c0320ab9b2f00dbf9999352c688c5dd537cb7
Detections:
win_azorult_g1
Create hunting rule
win_azorult_auto
Create hunting rule
Link:
https://www.unpac.me/results/ca2ab679-cc0c-4993-bfe3-6049fa1fad95/
Parent samples :
c578d33e132ccbbc26a4a31e6054fea7f42591b391e9b8eb30eaf732ed119088
74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07
SH256 hash:
46d3802acb6c708fcba3fa7b0432b362a06220c078e4a16c89b248022d753e72
MD5 hash:
2706c4174f7f3794cf3428823e8e452b
SHA1 hash:
9f135a396459c2ef6b501fd6a0ad66d683da7e24
Link:
https://www.unpac.me/results/ca2ab679-cc0c-4993-bfe3-6049fa1fad95/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07

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:asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research

File information

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

Malspam

AsyncRAT

rar ca2aec581456ce74ac0ad1c49c4973bb26490238dc8a12d12c8f49ad0a6409eb

AsyncRAT

Executable exe 74817ca889247bccdb4d0c98c608d0bf46912a7d1cf00ba43c070f9093326a07

(this sample)

  
Dropped by
MD5 22067dc2ba166531d8dbb9204102bfac
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/69815/
  
Dropped by
SHA256 ca2aec581456ce74ac0ad1c49c4973bb26490238dc8a12d12c8f49ad0a6409eb

Comments