asyncrat | b34617687a2b3b28e571390e329c77fc0d31957e4d85866b518f7881436d7fa3

Analysis

max time kernel
152s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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
404	Windows Media Player Network Sharing Service.exe
1196	Windows Media Player Network Sharing Service.exe
3472	Windows Media Player Network Sharing Service.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4732 set thread context of 2544	4732	DOC_20221012_094045716.scr	89
PID 404 set thread context of 1196	404	Windows Media Player Network Sharing Service.exe	99

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	cmd.exe
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	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	schtasks.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	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	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
4740	schtasks.exe
1496	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	DOC_20221012_094045716.scr

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 2544	4732	DOC_20221012_094045716.scr	89
PID 4732 wrote to memory of 4896	4732	DOC_20221012_094045716.scr	90
PID 4732 wrote to memory of 4896	4732	DOC_20221012_094045716.scr	90
PID 4732 wrote to memory of 4896	4732	DOC_20221012_094045716.scr	90
PID 4732 wrote to memory of 2284	4732	DOC_20221012_094045716.scr	91
PID 4732 wrote to memory of 2284	4732	DOC_20221012_094045716.scr	91
PID 4732 wrote to memory of 2284	4732	DOC_20221012_094045716.scr	91
PID 4732 wrote to memory of 3292	4732	DOC_20221012_094045716.scr	92
PID 4732 wrote to memory of 3292	4732	DOC_20221012_094045716.scr	92
PID 4732 wrote to memory of 3292	4732	DOC_20221012_094045716.scr	92
PID 2284 wrote to memory of 1496	2284	cmd.exe	96
PID 2284 wrote to memory of 1496	2284	cmd.exe	96
PID 2284 wrote to memory of 1496	2284	cmd.exe	96
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 1196	404	Windows Media Player Network Sharing Service.exe	99
PID 404 wrote to memory of 3320	404	Windows Media Player Network Sharing Service.exe	100
PID 404 wrote to memory of 3320	404	Windows Media Player Network Sharing Service.exe	100
PID 404 wrote to memory of 3320	404	Windows Media Player Network Sharing Service.exe	100
PID 404 wrote to memory of 4700	404	Windows Media Player Network Sharing Service.exe	101
PID 404 wrote to memory of 4700	404	Windows Media Player Network Sharing Service.exe	101
PID 404 wrote to memory of 4700	404	Windows Media Player Network Sharing Service.exe	101
PID 404 wrote to memory of 1272	404	Windows Media Player Network Sharing Service.exe	103
PID 404 wrote to memory of 1272	404	Windows Media Player Network Sharing Service.exe	103
PID 404 wrote to memory of 1272	404	Windows Media Player Network Sharing Service.exe	103
PID 4700 wrote to memory of 4740	4700	cmd.exe	106
PID 4700 wrote to memory of 4740	4700	cmd.exe	106
PID 4700 wrote to memory of 4740	4700	cmd.exe	106
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108
PID 3472 wrote to memory of 1328	3472	Windows Media Player Network Sharing Service.exe	108

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:4732
- 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:2544
- 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:4896
- 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:2284
- - 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:1496
- 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:3292

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"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:404
- 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:1196
- 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:3320
- 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:4700
- - 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:4740
- 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"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1272

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"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3472
- 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⤵
  PID:1328

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

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Windows Media Player Network Sharing Service.exe.log

Filesize
612B

MD5
4bc94363628f46b343c5e8e2da62ca26

SHA1
8a41ac46e24d790e11a407d0e957c4a6be6056c4

SHA256
c8e1d0b306825b2c9a3ed32a461dd191ceb861205425fdfb687a4889684a3e1a

SHA512
cf8ede5b84ba775d8ff89752530fa899d6b2e6424549202ab782a3caa92c0d9a31e9b2f660b51eedc932a68ba25e9ec228bb965cdc183e600ea8aa5a6736f829

Download Submit
memory/2544-7-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2544-14-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2544-13-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/2544-9-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/4732-6-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/4732-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/4732-5-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/4732-4-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/4732-10-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/4732-3-0x0000000005570000-0x00000000055D6000-memory.dmp

Filesize
408KB

Download
memory/4732-2-0x0000000005A70000-0x0000000006014000-memory.dmp

Filesize
5.6MB

Download
memory/4732-1-0x0000000000BC0000-0x0000000000BE0000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads