asyncrat | db1e6b77da2691daf1be1eed70dc625e5e4749cfdd1833f194fedc63340b41d9

General

Target

4270337062dd7bc8bf4ccbe505a15256.exe
Size

254KB
MD5

4270337062dd7bc8bf4ccbe505a15256
SHA1

8b48ddb8b17e21b3b9085ea3eda17055fc7cd222
SHA256

db1e6b77da2691daf1be1eed70dc625e5e4749cfdd1833f194fedc63340b41d9
SHA512

06d72a838e88eeb8fc6807e7127c2b2a92cdae3476dc523671b140c23b1b0708033acb0f9ddb5b15632b240fb8e33fa4dfef5f8634e033d5c42b955828fa1e5c

Score

10^/10

asyncrat persistence rat

Malware Config

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1676	RegAsm.exe

Loads dropped DLL 2 IoCs

pid	Process
772	4270337062dd7bc8bf4ccbe505a15256.exe
1676	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\LsaIso = "\"C:\\Users\\Admin\\AppData\\Roaming\\LsaIso\\LsaIso.exe\""	4270337062dd7bc8bf4ccbe505a15256.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 772 set thread context of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
772	4270337062dd7bc8bf4ccbe505a15256.exe
772	4270337062dd7bc8bf4ccbe505a15256.exe
772	4270337062dd7bc8bf4ccbe505a15256.exe
772	4270337062dd7bc8bf4ccbe505a15256.exe
772	4270337062dd7bc8bf4ccbe505a15256.exe
912	powershell.exe
912	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	772	4270337062dd7bc8bf4ccbe505a15256.exe
Token: SeDebugPrivilege	912	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 772 wrote to memory of 332	772	4270337062dd7bc8bf4ccbe505a15256.exe	30
PID 772 wrote to memory of 332	772	4270337062dd7bc8bf4ccbe505a15256.exe	30
PID 772 wrote to memory of 332	772	4270337062dd7bc8bf4ccbe505a15256.exe	30
PID 772 wrote to memory of 332	772	4270337062dd7bc8bf4ccbe505a15256.exe	30
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 772 wrote to memory of 1676	772	4270337062dd7bc8bf4ccbe505a15256.exe	31
PID 332 wrote to memory of 912	332	WScript.exe	32
PID 332 wrote to memory of 912	332	WScript.exe	32
PID 332 wrote to memory of 912	332	WScript.exe	32
PID 332 wrote to memory of 912	332	WScript.exe	32

C:\Users\Admin\AppData\Local\Temp\4270337062dd7bc8bf4ccbe505a15256.exe
"C:\Users\Admin\AppData\Local\Temp\4270337062dd7bc8bf4ccbe505a15256.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:772
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Qalskboooco.vbs"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:332
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath C:\,'C:\Users\Admin\AppData\Roaming\LsaIso\LsaIso.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:912
- C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
  C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/332-71-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/772-62-0x00000000001F0000-0x00000000001F2000-memory.dmp

Filesize
8KB

Download
memory/772-67-0x00000000049B0000-0x00000000049B1000-memory.dmp

Filesize
4KB

Download
memory/772-68-0x00000000003D0000-0x00000000003E6000-memory.dmp

Filesize
88KB

Download
memory/772-60-0x0000000000BA0000-0x0000000000BA1000-memory.dmp

Filesize
4KB

Download
memory/912-88-0x0000000004950000-0x0000000004951000-memory.dmp

Filesize
4KB

Download
memory/912-122-0x00000000062D0000-0x00000000062D1000-memory.dmp

Filesize
4KB

Download
memory/912-121-0x00000000062C0000-0x00000000062C1000-memory.dmp

Filesize
4KB

Download
memory/912-83-0x0000000000A50000-0x0000000000A51000-memory.dmp

Filesize
4KB

Download
memory/912-84-0x0000000004A30000-0x0000000004A31000-memory.dmp

Filesize
4KB

Download
memory/912-85-0x0000000002540000-0x0000000002541000-memory.dmp

Filesize
4KB

Download
memory/912-86-0x00000000049F0000-0x00000000049F1000-memory.dmp

Filesize
4KB

Download
memory/912-87-0x00000000049F2000-0x00000000049F3000-memory.dmp

Filesize
4KB

Download
memory/912-107-0x00000000055E0000-0x00000000055E1000-memory.dmp

Filesize
4KB

Download
memory/912-91-0x0000000005620000-0x0000000005621000-memory.dmp

Filesize
4KB

Download
memory/912-96-0x00000000056C0000-0x00000000056C1000-memory.dmp

Filesize
4KB

Download
memory/912-97-0x0000000005760000-0x0000000005761000-memory.dmp

Filesize
4KB

Download
memory/912-104-0x0000000006200000-0x0000000006201000-memory.dmp

Filesize
4KB

Download
memory/912-105-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1676-106-0x0000000004A10000-0x0000000004A11000-memory.dmp

Filesize
4KB

Download
memory/1676-73-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1676-79-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

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