asyncrat | 4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953

Analysis

max time kernel
126s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06-08-2024 13:24

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General

Target

4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe
Size

885KB
MD5

3293e76bde33e374df998dc83874f03b
SHA1

44a13df0874936715bbb6ec9bb698bedc268c7e9
SHA256

4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953
SHA512

f37a23cadbb30996a3f2a56babd9b513c53134546f5976941e33b3b635a290e3fd5313657db249309dba97993ade6712f6a7c4a6f0f93df10f14b80e7f3662f2
SSDEEP

24576:HgEiAtVt8pxvgl12Em7BxpsCAz4KGQmE/G/cIK:bbuppgPMxqCIGPcIK

Score

10^/10

asyncrat discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

blue.o7lab.me:7777

server.underground-cheat.xyz:7777

Mutex

dtDtRWyW1m1g

Attributes

delay
3
install
false
install_file
$77WinUpdate.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat 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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Okqpfkqo = "C:\\Users\\Admin\\AppData\\Local\\Okqpfkqo.exe"	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 640 set thread context of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98

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 6 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	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
4496	ipconfig.exe
2056	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe
Token: SeDebugPrivilege	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe
Token: SeDebugPrivilege	4120	InstallUtil.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 1720	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	95
PID 640 wrote to memory of 1720	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	95
PID 640 wrote to memory of 1720	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	95
PID 1720 wrote to memory of 4496	1720	cmd.exe	97
PID 1720 wrote to memory of 4496	1720	cmd.exe	97
PID 1720 wrote to memory of 4496	1720	cmd.exe	97
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 4120	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	98
PID 640 wrote to memory of 5100	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	99
PID 640 wrote to memory of 5100	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	99
PID 640 wrote to memory of 5100	640	4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe	99
PID 5100 wrote to memory of 2056	5100	cmd.exe	101
PID 5100 wrote to memory of 2056	5100	cmd.exe	101
PID 5100 wrote to memory of 2056	5100	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe
"C:\Users\Admin\AppData\Local\Temp\4874508b4662cdbe145b4c70f86c70c7ce3237730098e41a67f2a961bd048953.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /release
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /release
    3⤵
    - System Location Discovery: System Language Discovery
    - Gathers network information
    PID:4496
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ipconfig /renew
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5100
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /renew
    3⤵
    - System Location Discovery: System Language Discovery
    - Gathers network information
    PID:2056

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4052,i,1828333185976713750,7918646547767660928,262144 --variations-seed-version --mojo-platform-channel-handle=4348 /prefetch:8
1⤵
PID:4468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Query Registry

T1012

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

memory/640-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/640-1-0x0000000000430000-0x0000000000514000-memory.dmp

Filesize
912KB

Download
memory/640-2-0x0000000004E70000-0x0000000004F48000-memory.dmp

Filesize
864KB

Download
memory/640-3-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/640-4-0x0000000004FF0000-0x00000000050CA000-memory.dmp

Filesize
872KB

Download
memory/640-10-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-56-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-60-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-68-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-66-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-64-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-62-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-58-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-54-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-52-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-50-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-48-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-46-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-44-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-42-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-40-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-38-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-36-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-34-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-32-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-30-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-28-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-24-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-22-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-20-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-18-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-16-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-26-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-14-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-12-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-8-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-6-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-5-0x0000000004FF0000-0x00000000050C4000-memory.dmp

Filesize
848KB

Download
memory/640-1041-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/640-1042-0x0000000005140000-0x000000000519C000-memory.dmp

Filesize
368KB

Download
memory/640-1043-0x00000000051A0000-0x00000000051EC000-memory.dmp

Filesize
304KB

Download
memory/640-1044-0x0000000005330000-0x00000000053C2000-memory.dmp

Filesize
584KB

Download
memory/640-1045-0x00000000052B0000-0x0000000005316000-memory.dmp

Filesize
408KB

Download
memory/640-1046-0x0000000005E90000-0x0000000006434000-memory.dmp

Filesize
5.6MB

Download
memory/640-1047-0x0000000005940000-0x0000000005994000-memory.dmp

Filesize
336KB

Download
memory/640-1048-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/640-1054-0x0000000074F9E000-0x0000000074F9F000-memory.dmp

Filesize
4KB

Download
memory/640-1055-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/4120-1052-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4120-1053-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/4120-1056-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/4120-1057-0x0000000005620000-0x00000000056BC000-memory.dmp

Filesize
624KB

Download
memory/4120-1058-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download
memory/4120-1059-0x0000000074F90000-0x0000000075740000-memory.dmp

Filesize
7.7MB

Download