asyncrat | 155854758b79cdee58f7df5c1a4a07d3b19b3d64a0a58b2e8faf6d8b67042f3c

Analysis

max time kernel
122s
max time network
142s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 19:09

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General

Target

file.exe
Size

280KB
MD5

76969acc42256771162be6f285de947c
SHA1

071c5791d9ca1c2382450c6ef09432e12e8b3ca2
SHA256

155854758b79cdee58f7df5c1a4a07d3b19b3d64a0a58b2e8faf6d8b67042f3c
SHA512

c6a687236323e2ea70c89f3ad38a80d8be179ebf281ff2b5b39db9f9a3ecab67eb9ec8237df82464566d0c7fa952e5d9dfa171b61a7f1b3abeb4897f54769f52
SSDEEP

6144:U5nFOwQLKFIkwMs+OZBH/5kA5wJEGrNTxhd:UJFOZKFIk2ZBf5kA+JE6h

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2764	Mxscspd_BelphegorShell.exe

Loads dropped DLL 1 IoCs

pid	Process
2392	file.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\ScJlsrsfsks	Mxscspd_BelphegorShell.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2764	Mxscspd_BelphegorShell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	Mxscspd_BelphegorShell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2764	Mxscspd_BelphegorShell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2392 wrote to memory of 2764	2392	file.exe	30
PID 2392 wrote to memory of 2764	2392	file.exe	30
PID 2392 wrote to memory of 2764	2392	file.exe	30
PID 2392 wrote to memory of 2764	2392	file.exe	30

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2392
- C:\Users\Admin\AppData\Local\Temp\Mxscspd_BelphegorShell.exe
  "C:\Users\Admin\AppData\Local\Temp\Mxscspd_BelphegorShell.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab6FF4.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Mxscspd_BelphegorShell.exe

Filesize
186KB

MD5
412a8bbc3366fec40120821a598ea26f

SHA1
171cc5cf93880517ba70b59c3a26fc9b249bc02d

SHA256
d918b089c7cce51352c6bcb6c3851fbf420884221bb30254179c55c42929f466

SHA512
2890b21770e6c8fd432aec2193462c19229ad9ae9e2e873784720fb40a46ffd927b58258d76d4fa38b3825a76cd2dd24f2179730783ac3fe6da24bcbeaaf8047

Download Submit
memory/2392-0-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/2392-1-0x0000000000280000-0x00000000002CA000-memory.dmp

Filesize
296KB

Download
memory/2392-3-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2392-9-0x0000000074420000-0x0000000074B0E000-memory.dmp

Filesize
6.9MB

Download
memory/2764-10-0x000007FEF55D3000-0x000007FEF55D4000-memory.dmp

Filesize
4KB

Download
memory/2764-11-0x000000013F490000-0x000000013F4C2000-memory.dmp

Filesize
200KB

Download
memory/2764-12-0x0000000000740000-0x0000000000770000-memory.dmp

Filesize
192KB

Download
memory/2764-29-0x000007FEF55D3000-0x000007FEF55D4000-memory.dmp

Filesize
4KB

Download