asyncrat | 97a47ec80b071d3d18bca405cbbb3984d3d364745852142a09ec75312e5eefb2

General

Target

26597663fcdb8fc32e2076bd5834889a.exe
Size

47KB
MD5

26597663fcdb8fc32e2076bd5834889a
SHA1

43b23ed222226e50c3ddc633ba9fb53457a7178d
SHA256

97a47ec80b071d3d18bca405cbbb3984d3d364745852142a09ec75312e5eefb2
SHA512

5dd946e9815c2ce3a1dae39c153d4c110f6273ae46fc953bc39e4a57eb50b43fb2eea974efc8fd9d4badd9cf141b7bd95bb50a754199d61332dc65b50e250078

Score

10^/10

asyncrat 08_25_21 rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

08_25_21

C2

service32.sytes.net:8080

Mutex

fgwajhfuw vnajskdhvfuqow

Attributes

anti_vm
false
bsod
false
delay
15
install
true
install_file
update.exe
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral1/files/0x00040000000130fd-69.dat	asyncrat
behavioral1/files/0x00040000000130fd-70.dat	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1756	update.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
640	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1896	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1208	26597663fcdb8fc32e2076bd5834889a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1208	26597663fcdb8fc32e2076bd5834889a.exe
Token: SeDebugPrivilege	1756	update.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 524	1208	26597663fcdb8fc32e2076bd5834889a.exe	29
PID 1208 wrote to memory of 524	1208	26597663fcdb8fc32e2076bd5834889a.exe	29
PID 1208 wrote to memory of 524	1208	26597663fcdb8fc32e2076bd5834889a.exe	29
PID 1208 wrote to memory of 1172	1208	26597663fcdb8fc32e2076bd5834889a.exe	31
PID 1208 wrote to memory of 1172	1208	26597663fcdb8fc32e2076bd5834889a.exe	31
PID 1208 wrote to memory of 1172	1208	26597663fcdb8fc32e2076bd5834889a.exe	31
PID 524 wrote to memory of 640	524	cmd.exe	32
PID 524 wrote to memory of 640	524	cmd.exe	32
PID 524 wrote to memory of 640	524	cmd.exe	32
PID 1172 wrote to memory of 1896	1172	cmd.exe	34
PID 1172 wrote to memory of 1896	1172	cmd.exe	34
PID 1172 wrote to memory of 1896	1172	cmd.exe	34
PID 1172 wrote to memory of 1756	1172	cmd.exe	35
PID 1172 wrote to memory of 1756	1172	cmd.exe	35
PID 1172 wrote to memory of 1756	1172	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\26597663fcdb8fc32e2076bd5834889a.exe
"C:\Users\Admin\AppData\Local\Temp\26597663fcdb8fc32e2076bd5834889a.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:640
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF096.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1172
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1896
- - C:\Users\Admin\AppData\Roaming\update.exe
    "C:\Users\Admin\AppData\Roaming\update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1208-60-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

Filesize
4KB

Download
memory/1208-62-0x000000001A7D0000-0x000000001A7D2000-memory.dmp

Filesize
8KB

Download
memory/1756-71-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download
memory/1756-73-0x000000001B090000-0x000000001B092000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads