asyncrat | b34617687a2b3b28e571390e329c77fc0d31957e4d85866b518f7881436d7fa3

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 11:25

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General

Target

DOC_20221012_094045716/DOC_20221012_094045716.scr
Size

406.0MB
MD5

e95cc5f4f2be88cdd778ddb951e287e4
SHA1

478fca06aeb68ab97d2e99c1436b4cc3370ec6d9
SHA256

e5b25e4f90530ff9fad1f617d8347f497a8bdba07e707f522564132a5bfab0b5
SHA512

23f420f9e904ab6b2d8954ef2232cd8b84560c8f856bc83e74d8eb17228def2dc6be09db8aa7f8a67d5914be2e2e228cd483d818602a79397f96c709c5e5c49a
SSDEEP

3072:M+rR+Y6VgvQdJK0vtNZg/V7S+O+dvvAun:M+BFI3vtNZNH+dv

Score

10^/10

asyncrat oct 11 discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Oct 11

donzola.duckdns.org:2000

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
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

Executes dropped EXE 3 IoCs

pid	Process
692	Windows Media Player Network Sharing Service.exe
1960	Windows Media Player Network Sharing Service.exe
960	Windows Media Player Network Sharing Service.exe

Loads dropped DLL 1 IoCs

pid	Process
692	Windows Media Player Network Sharing Service.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2408 set thread context of 2964	2408	DOC_20221012_094045716.scr	32
PID 692 set thread context of 1960	692	Windows Media Player Network Sharing Service.exe	42

System Location Discovery: System Language Discovery 1 TTPs 13 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Media Player Network Sharing Service.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DOC_20221012_094045716.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DOC_20221012_094045716.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Media Player Network Sharing Service.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Media Player Network Sharing Service.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2968	schtasks.exe
2492	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2964	DOC_20221012_094045716.scr

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2964	2408	DOC_20221012_094045716.scr	32
PID 2408 wrote to memory of 2808	2408	DOC_20221012_094045716.scr	33
PID 2408 wrote to memory of 2808	2408	DOC_20221012_094045716.scr	33
PID 2408 wrote to memory of 2808	2408	DOC_20221012_094045716.scr	33
PID 2408 wrote to memory of 2808	2408	DOC_20221012_094045716.scr	33
PID 2408 wrote to memory of 2728	2408	DOC_20221012_094045716.scr	34
PID 2408 wrote to memory of 2728	2408	DOC_20221012_094045716.scr	34
PID 2408 wrote to memory of 2728	2408	DOC_20221012_094045716.scr	34
PID 2408 wrote to memory of 2728	2408	DOC_20221012_094045716.scr	34
PID 2408 wrote to memory of 2980	2408	DOC_20221012_094045716.scr	35
PID 2408 wrote to memory of 2980	2408	DOC_20221012_094045716.scr	35
PID 2408 wrote to memory of 2980	2408	DOC_20221012_094045716.scr	35
PID 2408 wrote to memory of 2980	2408	DOC_20221012_094045716.scr	35
PID 2728 wrote to memory of 2968	2728	cmd.exe	39
PID 2728 wrote to memory of 2968	2728	cmd.exe	39
PID 2728 wrote to memory of 2968	2728	cmd.exe	39
PID 2728 wrote to memory of 2968	2728	cmd.exe	39
PID 3032 wrote to memory of 692	3032	taskeng.exe	41
PID 3032 wrote to memory of 692	3032	taskeng.exe	41
PID 3032 wrote to memory of 692	3032	taskeng.exe	41
PID 3032 wrote to memory of 692	3032	taskeng.exe	41
PID 3032 wrote to memory of 692	3032	taskeng.exe	41
PID 3032 wrote to memory of 692	3032	taskeng.exe	41
PID 3032 wrote to memory of 692	3032	taskeng.exe	41
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1960	692	Windows Media Player Network Sharing Service.exe	42
PID 692 wrote to memory of 1224	692	Windows Media Player Network Sharing Service.exe	43
PID 692 wrote to memory of 1224	692	Windows Media Player Network Sharing Service.exe	43
PID 692 wrote to memory of 1224	692	Windows Media Player Network Sharing Service.exe	43
PID 692 wrote to memory of 1224	692	Windows Media Player Network Sharing Service.exe	43
PID 692 wrote to memory of 2088	692	Windows Media Player Network Sharing Service.exe	44
PID 692 wrote to memory of 2088	692	Windows Media Player Network Sharing Service.exe	44
PID 692 wrote to memory of 2088	692	Windows Media Player Network Sharing Service.exe	44
PID 692 wrote to memory of 2088	692	Windows Media Player Network Sharing Service.exe	44
PID 692 wrote to memory of 2052	692	Windows Media Player Network Sharing Service.exe	45
PID 692 wrote to memory of 2052	692	Windows Media Player Network Sharing Service.exe	45
PID 692 wrote to memory of 2052	692	Windows Media Player Network Sharing Service.exe	45
PID 692 wrote to memory of 2052	692	Windows Media Player Network Sharing Service.exe	45
PID 2088 wrote to memory of 2492	2088	cmd.exe	49
PID 2088 wrote to memory of 2492	2088	cmd.exe	49
PID 2088 wrote to memory of 2492	2088	cmd.exe	49
PID 2088 wrote to memory of 2492	2088	cmd.exe	49
PID 3032 wrote to memory of 960	3032	taskeng.exe	50

C:\Users\Admin\AppData\Local\Temp\DOC_20221012_094045716\DOC_20221012_094045716.scr
"C:\Users\Admin\AppData\Local\Temp\DOC_20221012_094045716\DOC_20221012_094045716.scr" /S
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Users\Admin\AppData\Local\Temp\DOC_20221012_094045716\DOC_20221012_094045716.scr
  "C:\Users\Admin\AppData\Local\Temp\DOC_20221012_094045716\DOC_20221012_094045716.scr"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2964
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2808
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2968
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\DOC_20221012_094045716\DOC_20221012_094045716.scr" "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2980

C:\Windows\system32\taskeng.exe
taskeng.exe {EF42E0A2-0D5D-4BB2-A896-3AC2ECCE554B} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe
  "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:692
- - C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe
    "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1960
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1224
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2088
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe'" /f
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2492
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c copy "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe" "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2052
- C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe
  "C:\Users\Admin\AppData\Roaming\Windows Media Player Network Sharing Service\Windows Media Player Network Sharing Service.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/692-25-0x0000000000DD0000-0x0000000000DF0000-memory.dmp

Filesize
128KB

Download
memory/960-42-0x0000000000E10000-0x0000000000E30000-memory.dmp

Filesize
128KB

Download
memory/1960-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2408-19-0x0000000074110000-0x00000000747FE000-memory.dmp

Filesize
6.9MB

Download
memory/2408-1-0x0000000000110000-0x0000000000130000-memory.dmp

Filesize
128KB

Download
memory/2408-2-0x0000000074110000-0x00000000747FE000-memory.dmp

Filesize
6.9MB

Download
memory/2408-3-0x000000007411E000-0x000000007411F000-memory.dmp

Filesize
4KB

Download
memory/2408-4-0x0000000074110000-0x00000000747FE000-memory.dmp

Filesize
6.9MB

Download
memory/2408-0-0x000000007411E000-0x000000007411F000-memory.dmp

Filesize
4KB

Download
memory/2964-6-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2964-13-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2964-17-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2964-15-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2964-18-0x0000000074110000-0x00000000747FE000-memory.dmp

Filesize
6.9MB

Download
memory/2964-5-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2964-22-0x0000000074110000-0x00000000747FE000-memory.dmp

Filesize
6.9MB

Download
memory/2964-7-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2964-9-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2964-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads