asyncrat | df9d5a6d4edf1baf28fe59cc742cb980dfba7613a17b50c5a75f3fdd756bbc54

General

Target

89bc2f3d54f79215dd8f427e8edabfc0.exe
Size

74KB
MD5

89bc2f3d54f79215dd8f427e8edabfc0
SHA1

1e371498d6bd602ecaf595e1f12ab2ffa82c761c
SHA256

df9d5a6d4edf1baf28fe59cc742cb980dfba7613a17b50c5a75f3fdd756bbc54
SHA512

119a3361e3f6c046c2b98090fa4b7eb08477cb266325df3af2978e8c14e768da63122d4d51bbb674eb78c9866945188312e3fdad6fe093f26188ea922f289595
SSDEEP

1536:OU/ccx0dxCKg6PMVSUiLsiIyTH1bR/SjSwDQzcqLVclN:OU0cx0f9g6PMVtiFTH1bR6WEQbBY

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

C2

94.156.69.242:5000

Mutex

rufrwqqzhtx

Attributes

delay
1
install
true
install_file
WinUpdate.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/0x0008000000018741-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2796	WinUpdate.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
2124	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
536	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1380	89bc2f3d54f79215dd8f427e8edabfc0.exe
1380	89bc2f3d54f79215dd8f427e8edabfc0.exe
1380	89bc2f3d54f79215dd8f427e8edabfc0.exe
2796	WinUpdate.exe
2796	WinUpdate.exe
2796	WinUpdate.exe
2796	WinUpdate.exe
2796	WinUpdate.exe
2796	WinUpdate.exe
2796	WinUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1380	89bc2f3d54f79215dd8f427e8edabfc0.exe
Token: SeDebugPrivilege	2796	WinUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2796	WinUpdate.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 328	1380	89bc2f3d54f79215dd8f427e8edabfc0.exe	30
PID 1380 wrote to memory of 328	1380	89bc2f3d54f79215dd8f427e8edabfc0.exe	30
PID 1380 wrote to memory of 328	1380	89bc2f3d54f79215dd8f427e8edabfc0.exe	30
PID 1380 wrote to memory of 2404	1380	89bc2f3d54f79215dd8f427e8edabfc0.exe	31
PID 1380 wrote to memory of 2404	1380	89bc2f3d54f79215dd8f427e8edabfc0.exe	31
PID 1380 wrote to memory of 2404	1380	89bc2f3d54f79215dd8f427e8edabfc0.exe	31
PID 2404 wrote to memory of 2124	2404	cmd.exe	34
PID 2404 wrote to memory of 2124	2404	cmd.exe	34
PID 2404 wrote to memory of 2124	2404	cmd.exe	34
PID 328 wrote to memory of 536	328	cmd.exe	35
PID 328 wrote to memory of 536	328	cmd.exe	35
PID 328 wrote to memory of 536	328	cmd.exe	35
PID 2404 wrote to memory of 2796	2404	cmd.exe	36
PID 2404 wrote to memory of 2796	2404	cmd.exe	36
PID 2404 wrote to memory of 2796	2404	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\89bc2f3d54f79215dd8f427e8edabfc0.exe
"C:\Users\Admin\AppData\Local\Temp\89bc2f3d54f79215dd8f427e8edabfc0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:328
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:536
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB79C.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2404
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2124
- - C:\Users\Admin\AppData\Roaming\WinUpdate.exe
    "C:\Users\Admin\AppData\Roaming\WinUpdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2796

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\tmpB79C.tmp.bat

Filesize
153B

MD5
1c26fa59286e2bd53547e3f26e3c90f3

SHA1
6b1340f3b5fed46379e7e02dde87a1d297f55326

SHA256
44288158bb44b7b4e5c72fb5835c907a6a678162ff1b50dc47853a0bf9aac3cf

SHA512
77684dc754eec8771fb81d1e4f0443a4b2f34ab9cf9ba14bbcaf48f265313f4dadcff930c85788b19d1afa3feb37fe3e12d7e3d82ed27835c324714590df5035

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\WinUpdate.exe

Filesize
74KB

MD5
89bc2f3d54f79215dd8f427e8edabfc0

SHA1
1e371498d6bd602ecaf595e1f12ab2ffa82c761c

SHA256
df9d5a6d4edf1baf28fe59cc742cb980dfba7613a17b50c5a75f3fdd756bbc54

SHA512
119a3361e3f6c046c2b98090fa4b7eb08477cb266325df3af2978e8c14e768da63122d4d51bbb674eb78c9866945188312e3fdad6fe093f26188ea922f289595

Download Submit
memory/1380-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/1380-1-0x0000000001180000-0x0000000001198000-memory.dmp

Filesize
96KB

Download
memory/1380-3-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/1380-12-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/1380-14-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/2796-18-0x0000000000EC0000-0x0000000000ED8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads