asyncrat | b1c2d42876dbd40a3cbce84cd5e4e44b76c2e35c7618f9c831416d6442667d33

General

Target

arf.exe
Size

63KB
MD5

f69a0edbc9c44a09ed18e5a501b6621b
SHA1

7b835c5a70749c3e33c338943344ae65fe6d7aaf
SHA256

b1c2d42876dbd40a3cbce84cd5e4e44b76c2e35c7618f9c831416d6442667d33
SHA512

a8067e96218406d1afa94c827d630b5835374db71c794d6de0f6a75756935cc4b2ee74bb72f9ac2034a6d8ccab81a503aeca01b6fad76b17a59ed4ebd1703644
SSDEEP

1536:diDBlKWYEk2KwYjGbbKwg9z+aGtZVclN:dmlKWYEb6GbbK5VizY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

roarwasd12312-34767.portmap.host:8848

roarwasd12312-34767.portmap.host:34767

Mutex

roaroaroaraoroaroaraoraoraoarororrohrorororoaroaaoaoaoaroaroar

Attributes

delay
1
install
true
install_file
windows defender firewall.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
behavioral2/files/0x001c00000002aae3-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
5036	windows defender firewall.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
4052	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
3860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe
2644	arf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	arf.exe
Token: SeDebugPrivilege	5036	windows defender firewall.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 1936	2644	arf.exe	78
PID 2644 wrote to memory of 1936	2644	arf.exe	78
PID 2644 wrote to memory of 1472	2644	arf.exe	79
PID 2644 wrote to memory of 1472	2644	arf.exe	79
PID 1936 wrote to memory of 3860	1936	cmd.exe	82
PID 1936 wrote to memory of 3860	1936	cmd.exe	82
PID 1472 wrote to memory of 4052	1472	cmd.exe	83
PID 1472 wrote to memory of 4052	1472	cmd.exe	83
PID 1472 wrote to memory of 5036	1472	cmd.exe	84
PID 1472 wrote to memory of 5036	1472	cmd.exe	84

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\arf.exe
"C:\Users\Admin\AppData\Local\Temp\arf.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1936
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3860
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC285.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1472
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4052
- - C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
    "C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:5036

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\tmpC285.tmp.bat

Filesize
169B

MD5
ab0f14a8c767af56813c8382914cfd25

SHA1
a5f5d942242f91149218022b7b7cf924eef5f78c

SHA256
ef5b9a66a728a71f54bf1713114bc5b7991dd4e1a439c146a6d8581f49e63336

SHA512
5bd7ce782826acd07db96c541e169ed2684de46fa6f4c50a9878452120d100a5652674a6d38b552921d541ab83b6efe63281f40e2ee6050a28904bfd243b3df0

Download Submit
C:\Users\Admin\AppData\Roaming\windows defender firewall.exe

Filesize
63KB

MD5
f69a0edbc9c44a09ed18e5a501b6621b

SHA1
7b835c5a70749c3e33c338943344ae65fe6d7aaf

SHA256
b1c2d42876dbd40a3cbce84cd5e4e44b76c2e35c7618f9c831416d6442667d33

SHA512
a8067e96218406d1afa94c827d630b5835374db71c794d6de0f6a75756935cc4b2ee74bb72f9ac2034a6d8ccab81a503aeca01b6fad76b17a59ed4ebd1703644

Download Submit
memory/2644-0-0x00007FF9D6B73000-0x00007FF9D6B75000-memory.dmp

Filesize
8KB

Download
memory/2644-1-0x0000000000EE0000-0x0000000000EF6000-memory.dmp

Filesize
88KB

Download
memory/2644-2-0x00007FF9D6B70000-0x00007FF9D7632000-memory.dmp

Filesize
10.8MB

Download
memory/2644-3-0x00007FF9D6B70000-0x00007FF9D7632000-memory.dmp

Filesize
10.8MB

Download
memory/2644-8-0x00007FF9D6B70000-0x00007FF9D7632000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads