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
behavioral1/files/0x000c000000012263-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2940	windows defender firewall.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2772	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
2820	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
272	arf.exe
272	arf.exe
272	arf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	272	arf.exe
Token: SeDebugPrivilege	2940	windows defender firewall.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 272 wrote to memory of 2364	272	arf.exe	31
PID 272 wrote to memory of 2364	272	arf.exe	31
PID 272 wrote to memory of 2364	272	arf.exe	31
PID 272 wrote to memory of 396	272	arf.exe	32
PID 272 wrote to memory of 396	272	arf.exe	32
PID 272 wrote to memory of 396	272	arf.exe	32
PID 396 wrote to memory of 2772	396	cmd.exe	35
PID 396 wrote to memory of 2772	396	cmd.exe	35
PID 396 wrote to memory of 2772	396	cmd.exe	35
PID 2364 wrote to memory of 2820	2364	cmd.exe	36
PID 2364 wrote to memory of 2820	2364	cmd.exe	36
PID 2364 wrote to memory of 2820	2364	cmd.exe	36
PID 396 wrote to memory of 2940	396	cmd.exe	37
PID 396 wrote to memory of 2940	396	cmd.exe	37
PID 396 wrote to memory of 2940	396	cmd.exe	37

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:272
- 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:2364
- - 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:2820
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE9B3.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:396
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2772
- - 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:2940

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE9B3.tmp.bat

Filesize
169B

MD5
f3bfe2fb6354d1dab0c90a30457ab6d9

SHA1
e4eb3687cb20cf46ca1cbea679835d4926a08107

SHA256
fd3e5f15e5dc5632a21b64f1e1b4695ab1c285f4c5c34813ca79324d6cf75baf

SHA512
036a739cf2921a6a72cd8e453cbe629de58f9db69e31723e4bb2922c3fe42249e80311737c546e4e1316ec47dda56989001cc21f3d9ec5bc7a1cfff1b0915009

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

Filesize
63KB

MD5
f69a0edbc9c44a09ed18e5a501b6621b

SHA1
7b835c5a70749c3e33c338943344ae65fe6d7aaf

SHA256
b1c2d42876dbd40a3cbce84cd5e4e44b76c2e35c7618f9c831416d6442667d33

SHA512
a8067e96218406d1afa94c827d630b5835374db71c794d6de0f6a75756935cc4b2ee74bb72f9ac2034a6d8ccab81a503aeca01b6fad76b17a59ed4ebd1703644

Download Submit
memory/272-0-0x000007FEF6083000-0x000007FEF6084000-memory.dmp

Filesize
4KB

Download
memory/272-1-0x0000000001190000-0x00000000011A6000-memory.dmp

Filesize
88KB

Download
memory/272-2-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download
memory/272-3-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download
memory/272-13-0x000007FEF6080000-0x000007FEF6A6C000-memory.dmp

Filesize
9.9MB

Download
memory/2940-17-0x0000000000C10000-0x0000000000C26000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads