asyncrat | aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

Analysis

max time kernel
402s
max time network
405s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-11-2024 23:13

Sharing

Copy URL

Twitter E-mail

Reason

Machine shutdown

Report Analysis Logs

General

Target

Loader.exe
Size

63KB
MD5

7ceb11ebb7a55e33a82bc3b66f554e79
SHA1

8dfd574ad06ded662d92d81b72f14c1914ac45b5
SHA256

aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603
SHA512

d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd
SSDEEP

768:rig6BqomfHz4c78F3C8A+XuLvRIOdJD7P7DEhfW1+T4iSBGHmDbDOphLoXaHnCtB:i+4/WD7jhBYUbghiynCCundpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

technical-southwest.gl.at.ply.gg:58694

Attributes

delay
1
install
true
install_file
WINDOWS.exe
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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000d000000023b79-11.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	Loader.exe

Executes dropped EXE 1 IoCs

pid	Process
3868	WINDOWS.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
692	timeout.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "157"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
992	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3352	Loader.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe
3868	WINDOWS.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3352	Loader.exe
Token: SeDebugPrivilege	3352	Loader.exe
Token: SeDebugPrivilege	3868	WINDOWS.exe
Token: SeDebugPrivilege	3868	WINDOWS.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1260	LogonUI.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3352 wrote to memory of 3184	3352	Loader.exe	83
PID 3352 wrote to memory of 3184	3352	Loader.exe	83
PID 3352 wrote to memory of 4528	3352	Loader.exe	85
PID 3352 wrote to memory of 4528	3352	Loader.exe	85
PID 3184 wrote to memory of 992	3184	cmd.exe	87
PID 3184 wrote to memory of 992	3184	cmd.exe	87
PID 4528 wrote to memory of 692	4528	cmd.exe	88
PID 4528 wrote to memory of 692	4528	cmd.exe	88
PID 4528 wrote to memory of 3868	4528	cmd.exe	93
PID 4528 wrote to memory of 3868	4528	cmd.exe	93

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3184
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:992
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7E48.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:692
- - C:\Users\Admin\AppData\Roaming\WINDOWS.exe
    "C:\Users\Admin\AppData\Roaming\WINDOWS.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3868

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:1344

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39ad055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1260

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
1⤵
PID:5060

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
1⤵
PID:2636

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
1⤵
PID:4364

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
1⤵
PID:1040

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
1⤵
PID:464

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
1⤵
PID:380

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7E48.tmp.bat

Filesize
151B

MD5
a3da2566bd37579dc1df25ed877170e8

SHA1
efd5c2bcb856b5a45100d68c6b396a97509674a7

SHA256
313b5353840a4e77e2451faae926f481c2fbfb101d953f638899f711c09abcf4

SHA512
6d757ad4aaa5bf162e0a9de9db5b9dc7695cfabc28ec4e7dde1a95ebe9848dd98ab428e1c36b8c6e6f777cc58e2cb2d078ee78f5cfc56d0f498c539f945517dd

Download Submit
C:\Users\Admin\AppData\Roaming\WINDOWS.exe

Filesize
63KB

MD5
7ceb11ebb7a55e33a82bc3b66f554e79

SHA1
8dfd574ad06ded662d92d81b72f14c1914ac45b5

SHA256
aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

SHA512
d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd

Download Submit
memory/3352-0-0x00007FFA73F03000-0x00007FFA73F05000-memory.dmp

Filesize
8KB

Download
memory/3352-1-0x0000000000310000-0x0000000000326000-memory.dmp

Filesize
88KB

Download
memory/3352-2-0x00007FFA73F00000-0x00007FFA749C1000-memory.dmp

Filesize
10.8MB

Download
memory/3352-7-0x00007FFA73F00000-0x00007FFA749C1000-memory.dmp

Filesize
10.8MB

Download
memory/3352-8-0x00007FFA73F00000-0x00007FFA749C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads