MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8b3bcce39aee0df9fc37b2f009ecc2e9c570c665f632c576f7ae8c2f32a87a1d. 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
| SHA256 hash: | 8b3bcce39aee0df9fc37b2f009ecc2e9c570c665f632c576f7ae8c2f32a87a1d |
|---|---|
| SHA3-384 hash: | 3b7fdde7f243e0b046fa731e0af23ae578b028d1f052a6b984597b35006288d82c629b9be630ab5cf1c5bb3a6941836a |
| SHA1 hash: | caba9cc3c77d49aa4f2f2f3bb3b6b779dd7ad1b1 |
| MD5 hash: | 044be31c4ec02f25b5627cf889d581d6 |
| humanhash: | carbon-five-idaho-april |
| File name: | CONTRACT_87908.exe |
| Download: | download sample |
| Signature | AsyncRAT |
| File size: | 862'720 bytes |
| First seen: | 2021-01-13 20:07:56 UTC |
| Last seen: | 2021-01-13 21:59:09 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:T3TcXpm+tu18OWHnPrq9QHa3jLo1GHmuw2fKvgNW4NZ6:0Zm+08OknWYa3I1GHmIfqgI4z |
| Threatray | 5 similar samples on MalwareBazaar |
| TLSH | FB051881DBC08340EABD67BD6436082116E3FE7AFAB8D64DD94570356BB395400BEB93 |
| Reporter |  abuse_ch |
| Tags: | AsyncRAT exe nVpn RAT |
abuse_ch
Malspam distributing AsyncRAT:HELO: ultra.ownmyserver.com
Sending IP: 147.135.50.84
From: alaa.moh@concretech.net
Subject: Fw: CONTRACT-A354
Attachment: CONTRACT_87908.bz (contains "CONTRACT_87908.exe")
AsyncRAT C2:
91.193.75.182:8808
Intelligence
File Origin
# of uploads :
2
# of downloads :
174
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CONTRACT_87908.exe
Verdict:
Malicious activity
Analysis date:
2021-01-14 05:07:55 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AsyncRat
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Result
Verdict:
SUSPICIOUS
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:
AsyncRAT
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
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
Sigma detected: Scheduled temp file as task from temp location
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
Yara detected AntiVM_3
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Taskun
Status:
Malicious
First seen:
2021-01-13 11:40:52 UTC
AV detection:
17 of 46 (36.96%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
unknown
Similar samples:
Result
Malware family:
asyncrat
Score:
10/10
Tags:
family:asyncrat rat
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
91.193.75.182:8808
:8808
:8808
Unpacked files
SH256 hash:
241568a8dd27445f68e032183763305eb6d9f7f295b3292a73f40e268a207937
MD5 hash:
a4552e6734ff19f7a1cf1b7aed72cf85
SHA1 hash:
2ff8ed629802d47d328860a6a2afc8788c60bf3f
SH256 hash:
296620e9308a1069ca98d27c426f25f5c1f87d9240bb371c657571034b0261b5
MD5 hash:
4cf24d41a7882216740280e3294cb853
SHA1 hash:
6bcb31d3dc0a7d71da1067a628168664202769a4
SH256 hash:
3320e3a3aeeb7d8714df4e3cc772209634d562773813b6ebbf116776f46f7a12
MD5 hash:
d5055dc3875035248a581d8a3fd4b7f7
SHA1 hash:
d313c105eb8150b61c1d115ff573d028f133c544
Detections:
win_asyncrat_w0
SH256 hash:
8b3bcce39aee0df9fc37b2f009ecc2e9c570c665f632c576f7ae8c2f32a87a1d
MD5 hash:
044be31c4ec02f25b5627cf889d581d6
SHA1 hash:
caba9cc3c77d49aa4f2f2f3bb3b6b779dd7ad1b1
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect AsyncRat in memory |
| Reference: | internal research |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse |
|---|---|
| Author: | ditekSHen |
| Description: | Detects file containing reversed ASEP Autorun registry keys |
| Rule name: | Reverse_text_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Reverse text detected |
| Rule name: | win_asyncrat_j1 |
|---|---|
| Author: | Johannes Bader @viql |
| Description: | detects AsyncRAT |
| Rule name: | win_asyncrat_w0 |
|---|---|
| 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
Delivery method
Distributed via e-mail attachment
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