asyncrat | 17dc9571dbd7e094dd65a862adfcde7328a3c3e45c9053ba99bff638e7918b4e

General

Target

Wave.exe
Size

74KB
MD5

31548bc072b604c0617e5ebcf7fc60b4
SHA1

035e68c49525e477ca5e61f77e1f8fdd4955b722
SHA256

17dc9571dbd7e094dd65a862adfcde7328a3c3e45c9053ba99bff638e7918b4e
SHA512

9848a6406fa2b6ff3046dd147eb94583fb637a2598dc332905b2a98e171814d3d76554bcf54a909503577fab85ccccf29ae475f614edd3f30e0a62afe8696cb1
SSDEEP

1536:mUJQcxAz6/CTGPMVfe9VdQuDI6H1bf/gqcnSQzcaLVclN:mUWcxAW/4GPMVfe9VdQsH1bfQnSQLBY

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

WindowsRuntimeBrokerService

Attributes

delay
1
install
true
install_file
Microsoft\Windows\Themes\RuntimeBroker.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/xcd2XZ5Q

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/0x000c000000018718-17.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2680	RuntimeBroker.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	pastebin.com
2	pastebin.com

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
2776	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
2872	schtasks.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2880	Wave.exe
2880	Wave.exe
2880	Wave.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe
2680	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2880	Wave.exe
Token: SeDebugPrivilege	2880	Wave.exe
Token: SeDebugPrivilege	2680	RuntimeBroker.exe
Token: SeDebugPrivilege	2680	RuntimeBroker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2680	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 2916	2880	Wave.exe	30
PID 2880 wrote to memory of 2916	2880	Wave.exe	30
PID 2880 wrote to memory of 2916	2880	Wave.exe	30
PID 2880 wrote to memory of 2184	2880	Wave.exe	32
PID 2880 wrote to memory of 2184	2880	Wave.exe	32
PID 2880 wrote to memory of 2184	2880	Wave.exe	32
PID 2184 wrote to memory of 2776	2184	cmd.exe	34
PID 2184 wrote to memory of 2776	2184	cmd.exe	34
PID 2184 wrote to memory of 2776	2184	cmd.exe	34
PID 2916 wrote to memory of 2872	2916	cmd.exe	35
PID 2916 wrote to memory of 2872	2916	cmd.exe	35
PID 2916 wrote to memory of 2872	2916	cmd.exe	35
PID 2184 wrote to memory of 2680	2184	cmd.exe	36
PID 2184 wrote to memory of 2680	2184	cmd.exe	36
PID 2184 wrote to memory of 2680	2184	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\Wave.exe
"C:\Users\Admin\AppData\Local\Temp\Wave.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBroker" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\RuntimeBroker.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBroker" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\RuntimeBroker.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2872
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp7501.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2776
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\RuntimeBroker.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab8D92.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarA366.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7501.tmp.bat

Filesize
182B

MD5
b151fc507ec5e97a2e3f314aa65fcd5d

SHA1
00eb043b9cbc6dd7eec7358d469ce0565b2e3702

SHA256
4c31ab63ddac32d2a909e6ff5faa2c92a6d7fc37b67635552f1283cf1320c09a

SHA512
dc94b78458a14085dd8b528b35824ead3c18dacb4fa2f07cabda1bf4836c232645cd0fd5045ef523a1ae5b472310bd47ddba74d8280c0f0033d234bf2d7d286f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\RuntimeBroker.exe

Filesize
74KB

MD5
31548bc072b604c0617e5ebcf7fc60b4

SHA1
035e68c49525e477ca5e61f77e1f8fdd4955b722

SHA256
17dc9571dbd7e094dd65a862adfcde7328a3c3e45c9053ba99bff638e7918b4e

SHA512
9848a6406fa2b6ff3046dd147eb94583fb637a2598dc332905b2a98e171814d3d76554bcf54a909503577fab85ccccf29ae475f614edd3f30e0a62afe8696cb1

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2680-18-0x0000000000250000-0x0000000000268000-memory.dmp

Filesize
96KB

Download
memory/2880-1-0x0000000000190000-0x00000000001A8000-memory.dmp

Filesize
96KB

Download
memory/2880-0-0x000007FEF5B93000-0x000007FEF5B94000-memory.dmp

Filesize
4KB

Download
memory/2880-3-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp

Filesize
9.9MB

Download
memory/2880-14-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp

Filesize
9.9MB

Download
memory/2880-12-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads