asyncrat | cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
04-08-2024 12:07

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General

Target

4fb681131f7ac7824c4f0afd337986d9.exe
Size

74KB
MD5

4fb681131f7ac7824c4f0afd337986d9
SHA1

c746978c6c091d94f2bbd17b1ad5954c4306bece
SHA256

cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80
SHA512

b5c2c3f6b5fe4845c0462059d9177b0cf56a36fe528745a9ea7f27120fdf2184b44be4dc5195d9e0d98a5a5987b8bc212707b3b4cc5ada9203db61f9859f3868
SSDEEP

1536:EUo0cxhzjBCViPMVXOS0GIkH1b6/20AuQQzcqLVclN:EUlcxhzVCiPMVOkH1b6+/QbBY

Score

10^/10

asyncrat 100 rnd rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

100 RND

91.92.243.191:5401

Mutex

6871a79e-e4f7-4fb3-ae38-dc20c1d657a0

Attributes

delay
1
install
true
install_file
hyperhostvc.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00080000000163b9-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2848	hyperhostvc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2580	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2136	4fb681131f7ac7824c4f0afd337986d9.exe
2136	4fb681131f7ac7824c4f0afd337986d9.exe
2136	4fb681131f7ac7824c4f0afd337986d9.exe
2136	4fb681131f7ac7824c4f0afd337986d9.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe
2848	hyperhostvc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2136	4fb681131f7ac7824c4f0afd337986d9.exe
Token: SeDebugPrivilege	2848	hyperhostvc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2848	hyperhostvc.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2136 wrote to memory of 2216	2136	4fb681131f7ac7824c4f0afd337986d9.exe	30
PID 2136 wrote to memory of 2216	2136	4fb681131f7ac7824c4f0afd337986d9.exe	30
PID 2136 wrote to memory of 2216	2136	4fb681131f7ac7824c4f0afd337986d9.exe	30
PID 2136 wrote to memory of 2168	2136	4fb681131f7ac7824c4f0afd337986d9.exe	31
PID 2136 wrote to memory of 2168	2136	4fb681131f7ac7824c4f0afd337986d9.exe	31
PID 2136 wrote to memory of 2168	2136	4fb681131f7ac7824c4f0afd337986d9.exe	31
PID 2168 wrote to memory of 2580	2168	cmd.exe	34
PID 2168 wrote to memory of 2580	2168	cmd.exe	34
PID 2168 wrote to memory of 2580	2168	cmd.exe	34
PID 2216 wrote to memory of 2764	2216	cmd.exe	35
PID 2216 wrote to memory of 2764	2216	cmd.exe	35
PID 2216 wrote to memory of 2764	2216	cmd.exe	35
PID 2168 wrote to memory of 2848	2168	cmd.exe	36
PID 2168 wrote to memory of 2848	2168	cmd.exe	36
PID 2168 wrote to memory of 2848	2168	cmd.exe	36

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\4fb681131f7ac7824c4f0afd337986d9.exe
"C:\Users\Admin\AppData\Local\Temp\4fb681131f7ac7824c4f0afd337986d9.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "hyperhostvc" /tr '"C:\Users\Admin\AppData\Roaming\hyperhostvc.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "hyperhostvc" /tr '"C:\Users\Admin\AppData\Roaming\hyperhostvc.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2764
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA709.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2580
- - C:\Users\Admin\AppData\Roaming\hyperhostvc.exe
    "C:\Users\Admin\AppData\Roaming\hyperhostvc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA709.tmp.bat

Filesize
155B

MD5
9941414c4251990614c8aedbf758a082

SHA1
489cf92c683e28eea56ce7c3520d707a01079a7d

SHA256
171af22f3501d8ca78fa5d76b86dc80fd1186b5a0862579ab750b52fc88fb1fa

SHA512
67e0d29e628aa551528abf7586c60d0ada7ba0d800cea1453a488121c81dd0a01b49ffae7da1769b70610e96bdc15ec147647f215e3b09fe57ea6afee79d55dd

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
C:\Users\Admin\AppData\Roaming\hyperhostvc.exe

Filesize
74KB

MD5
4fb681131f7ac7824c4f0afd337986d9

SHA1
c746978c6c091d94f2bbd17b1ad5954c4306bece

SHA256
cc38fb3ee3227606258b1b9ccba885393d6ed4a54a51aefef30a669cdc171e80

SHA512
b5c2c3f6b5fe4845c0462059d9177b0cf56a36fe528745a9ea7f27120fdf2184b44be4dc5195d9e0d98a5a5987b8bc212707b3b4cc5ada9203db61f9859f3868

Download Submit
memory/2136-0-0x000007FEF5F73000-0x000007FEF5F74000-memory.dmp

Filesize
4KB

Download
memory/2136-1-0x0000000000EF0000-0x0000000000F08000-memory.dmp

Filesize
96KB

Download
memory/2136-3-0x000007FEF5F70000-0x000007FEF695C000-memory.dmp

Filesize
9.9MB

Download
memory/2136-11-0x000007FEF5F70000-0x000007FEF695C000-memory.dmp

Filesize
9.9MB

Download
memory/2136-14-0x000007FEF5F70000-0x000007FEF695C000-memory.dmp

Filesize
9.9MB

Download
memory/2848-18-0x0000000000150000-0x0000000000168000-memory.dmp

Filesize
96KB

Download