asyncrat | 685c5bf64885c072aadce5f178f4ec91b6b3dcea76391d59b64bf688e38985d6

General

Target

Infected.exe
Size

63KB
MD5

033a95f31df91d6c986eb0351a7053b4
SHA1

c8945b0f9900fa37e654681e9e4a34aa4cb01e42
SHA256

685c5bf64885c072aadce5f178f4ec91b6b3dcea76391d59b64bf688e38985d6
SHA512

3c14096e54b3de9758f5a6aa2de369967aff87ad4e3a8f525fe2469440581011fefb10edfbd3c7088f5a93d9638a656d57c2feb6c14b7ab190230f07fa665795
SSDEEP

768:Uk/9PXn1w787gC8A+XvqazcBRL5JTk1+T4KSBGHmDbD/ph0oXPVTJ+FpSungpqKX:hR1gMdSJYUbdh9PdXungpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

default-hepatitis.gl.at.ply.gg:10820

Attributes

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

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00070000000120fb-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2620	system.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
2600	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
2880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2720	Infected.exe
2720	Infected.exe
2720	Infected.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	Infected.exe
Token: SeDebugPrivilege	2620	system.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2720 wrote to memory of 2776	2720	Infected.exe	30
PID 2720 wrote to memory of 2776	2720	Infected.exe	30
PID 2720 wrote to memory of 2776	2720	Infected.exe	30
PID 2720 wrote to memory of 2928	2720	Infected.exe	32
PID 2720 wrote to memory of 2928	2720	Infected.exe	32
PID 2720 wrote to memory of 2928	2720	Infected.exe	32
PID 2776 wrote to memory of 2880	2776	cmd.exe	34
PID 2776 wrote to memory of 2880	2776	cmd.exe	34
PID 2776 wrote to memory of 2880	2776	cmd.exe	34
PID 2928 wrote to memory of 2600	2928	cmd.exe	35
PID 2928 wrote to memory of 2600	2928	cmd.exe	35
PID 2928 wrote to memory of 2600	2928	cmd.exe	35
PID 2928 wrote to memory of 2620	2928	cmd.exe	36
PID 2928 wrote to memory of 2620	2928	cmd.exe	36
PID 2928 wrote to memory of 2620	2928	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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "system" /tr '"C:\Users\Admin\AppData\Roaming\system.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "system" /tr '"C:\Users\Admin\AppData\Roaming\system.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2880
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3092.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2600
- - C:\Users\Admin\AppData\Roaming\system.exe
    "C:\Users\Admin\AppData\Roaming\system.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2620

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab459A.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6C01.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3092.tmp.bat

Filesize
150B

MD5
62912d8cbaec88a39776dd5a866a37bc

SHA1
310fa27ddf1089b6cd1a87cdf09e03001b779e61

SHA256
611a964656f65265096bcf80fe1090535c086f3b5879a6f701b3d5923bd922a6

SHA512
645aa49a754b081ef1cc0c3088aa69d542425f35d001b0a90db219d34db641606ecc2caf551e350e4ac1be9d30502434349b53fb5c5a069e5077068f2d9b2961

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

Filesize
63KB

MD5
033a95f31df91d6c986eb0351a7053b4

SHA1
c8945b0f9900fa37e654681e9e4a34aa4cb01e42

SHA256
685c5bf64885c072aadce5f178f4ec91b6b3dcea76391d59b64bf688e38985d6

SHA512
3c14096e54b3de9758f5a6aa2de369967aff87ad4e3a8f525fe2469440581011fefb10edfbd3c7088f5a93d9638a656d57c2feb6c14b7ab190230f07fa665795

Download Submit
memory/2620-17-0x0000000001140000-0x0000000001156000-memory.dmp

Filesize
88KB

Download
memory/2620-34-0x0000000000C90000-0x0000000000CC4000-memory.dmp

Filesize
208KB

Download
memory/2620-53-0x000000001B700000-0x000000001B7B2000-memory.dmp

Filesize
712KB

Download
memory/2720-0-0x000007FEF5D33000-0x000007FEF5D34000-memory.dmp

Filesize
4KB

Download
memory/2720-1-0x0000000000130000-0x0000000000146000-memory.dmp

Filesize
88KB

Download
memory/2720-2-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

Filesize
9.9MB

Download
memory/2720-10-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

Filesize
9.9MB

Download
memory/2720-12-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

Filesize
9.9MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads