asyncrat | 1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146

General

Target

1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe
Size

74KB
MD5

143734ace32a278d89d77af8c7fdfa80
SHA1

ef834bb92bb57eda87458d1a2ee3525a4b91a6ef
SHA256

1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146
SHA512

e894eecfa4f84dc1e0abbc07cab9faefbf4e9cdd6e4a93089970ce16d01e1db4aa3bd309281e07a36d854691852654e099eecc18244db377cc5664c458a7ce9d
SSDEEP

1536:/Ut8cxqnHXC56PMV+e9VdQuDI6H1bf/TOur1LQzcQTtVclN:/UOcxq3O6PMV+e9VdQsH1bfLPrVQlT/Y

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

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/0x001e000000018f6e-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
948	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
2748	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
2400	schtasks.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

pid	Process
2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe
948	WinUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe
Token: SeDebugPrivilege	948	WinUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
948	WinUpdate.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2212	2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe	30
PID 2432 wrote to memory of 2212	2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe	30
PID 2432 wrote to memory of 2212	2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe	30
PID 2432 wrote to memory of 2896	2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe	32
PID 2432 wrote to memory of 2896	2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe	32
PID 2432 wrote to memory of 2896	2432	1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe	32
PID 2896 wrote to memory of 2748	2896	cmd.exe	34
PID 2896 wrote to memory of 2748	2896	cmd.exe	34
PID 2896 wrote to memory of 2748	2896	cmd.exe	34
PID 2212 wrote to memory of 2400	2212	cmd.exe	35
PID 2212 wrote to memory of 2400	2212	cmd.exe	35
PID 2212 wrote to memory of 2400	2212	cmd.exe	35
PID 2896 wrote to memory of 948	2896	cmd.exe	36
PID 2896 wrote to memory of 948	2896	cmd.exe	36
PID 2896 wrote to memory of 948	2896	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\1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe
"C:\Users\Admin\AppData\Local\Temp\1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2432
- 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:2212
- - 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:2400
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpEC04.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2896
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2748
- - 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:948

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\tmpEC04.tmp.bat

Filesize
153B

MD5
0b641376d5bcf2481780645dc906652f

SHA1
749e0142957055bb9770bdf1f7872f088533ac91

SHA256
e2ec2ad0b522b67b76199814cd0517ca6a697c31147b51c30b85c059d762752b

SHA512
2b85f84d7b97b4eca4b05b70ba3a737819598b396cd0ea358719dca234618708cddf3604bb3b57d4207d258610569aab3ddcc4488ac44bc78a930eed1c77cdb0

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
143734ace32a278d89d77af8c7fdfa80

SHA1
ef834bb92bb57eda87458d1a2ee3525a4b91a6ef

SHA256
1ef225d55b567e06ca8c6197aa237b76504a1a270a512b80b50280154af98146

SHA512
e894eecfa4f84dc1e0abbc07cab9faefbf4e9cdd6e4a93089970ce16d01e1db4aa3bd309281e07a36d854691852654e099eecc18244db377cc5664c458a7ce9d

Download Submit
memory/948-18-0x0000000000940000-0x0000000000958000-memory.dmp

Filesize
96KB

Download
memory/2432-0-0x000007FEF5663000-0x000007FEF5664000-memory.dmp

Filesize
4KB

Download
memory/2432-1-0x0000000000F50000-0x0000000000F68000-memory.dmp

Filesize
96KB

Download
memory/2432-3-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download
memory/2432-13-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download
memory/2432-14-0x000007FEF5660000-0x000007FEF604C000-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