asyncrat | e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07-08-2024 01:03

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General

Target

e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606.exe
Size

157KB
MD5

50814f8fc570268a7ce22e6b903ef552
SHA1

1d0f7a10da8d3a34b6a9536b05a738bcefcc8316
SHA256

e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606
SHA512

aca2a18a94d9d9d8ec4d02266033473dff149b6331c8a4f1b282e6941c2a65669870ac3795c159172a6ad8b944622122fedfcd355b758a04d053223391819601
SSDEEP

3072:VVoNnTW/vQgEAmjc+O3lBsSTzsSTxYKJy1v:VmNT6vQgEAmg+QlqST4STxYKJcv

Score

10^/10

asyncrat default discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

34.45.30.242:443

34.45.30.242:80

34.66.204.146:443

34.66.204.146:80

Mutex

uyvnhoyeedhzwfofge

Attributes

delay
1
install
true
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000800000002347e-12.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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	cscript.exe

Executes dropped EXE 1 IoCs

pid	Process
3532	6xlFrOdT.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
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 2 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	e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cscript.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

description	pid	Process
Token: SeDebugPrivilege	3532	6xlFrOdT.exe
Token: SeIncreaseQuotaPrivilege	3532	6xlFrOdT.exe
Token: SeSecurityPrivilege	3532	6xlFrOdT.exe
Token: SeTakeOwnershipPrivilege	3532	6xlFrOdT.exe
Token: SeLoadDriverPrivilege	3532	6xlFrOdT.exe
Token: SeSystemProfilePrivilege	3532	6xlFrOdT.exe
Token: SeSystemtimePrivilege	3532	6xlFrOdT.exe
Token: SeProfSingleProcessPrivilege	3532	6xlFrOdT.exe
Token: SeIncBasePriorityPrivilege	3532	6xlFrOdT.exe
Token: SeCreatePagefilePrivilege	3532	6xlFrOdT.exe
Token: SeBackupPrivilege	3532	6xlFrOdT.exe
Token: SeRestorePrivilege	3532	6xlFrOdT.exe
Token: SeShutdownPrivilege	3532	6xlFrOdT.exe
Token: SeDebugPrivilege	3532	6xlFrOdT.exe
Token: SeSystemEnvironmentPrivilege	3532	6xlFrOdT.exe
Token: SeRemoteShutdownPrivilege	3532	6xlFrOdT.exe
Token: SeUndockPrivilege	3532	6xlFrOdT.exe
Token: SeManageVolumePrivilege	3532	6xlFrOdT.exe
Token: 33	3532	6xlFrOdT.exe
Token: 34	3532	6xlFrOdT.exe
Token: 35	3532	6xlFrOdT.exe
Token: 36	3532	6xlFrOdT.exe
Token: SeIncreaseQuotaPrivilege	3532	6xlFrOdT.exe
Token: SeSecurityPrivilege	3532	6xlFrOdT.exe
Token: SeTakeOwnershipPrivilege	3532	6xlFrOdT.exe
Token: SeLoadDriverPrivilege	3532	6xlFrOdT.exe
Token: SeSystemProfilePrivilege	3532	6xlFrOdT.exe
Token: SeSystemtimePrivilege	3532	6xlFrOdT.exe
Token: SeProfSingleProcessPrivilege	3532	6xlFrOdT.exe
Token: SeIncBasePriorityPrivilege	3532	6xlFrOdT.exe
Token: SeCreatePagefilePrivilege	3532	6xlFrOdT.exe
Token: SeBackupPrivilege	3532	6xlFrOdT.exe
Token: SeRestorePrivilege	3532	6xlFrOdT.exe
Token: SeShutdownPrivilege	3532	6xlFrOdT.exe
Token: SeDebugPrivilege	3532	6xlFrOdT.exe
Token: SeSystemEnvironmentPrivilege	3532	6xlFrOdT.exe
Token: SeRemoteShutdownPrivilege	3532	6xlFrOdT.exe
Token: SeUndockPrivilege	3532	6xlFrOdT.exe
Token: SeManageVolumePrivilege	3532	6xlFrOdT.exe
Token: 33	3532	6xlFrOdT.exe
Token: 34	3532	6xlFrOdT.exe
Token: 35	3532	6xlFrOdT.exe
Token: 36	3532	6xlFrOdT.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4880 wrote to memory of 2808	4880	e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606.exe	85
PID 4880 wrote to memory of 2808	4880	e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606.exe	85
PID 4880 wrote to memory of 2808	4880	e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606.exe	85
PID 2808 wrote to memory of 3532	2808	cscript.exe	87
PID 2808 wrote to memory of 3532	2808	cscript.exe	87

C:\Users\Admin\AppData\Local\Temp\e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606.exe
"C:\Users\Admin\AppData\Local\Temp\e4ff7372f55485d5d9dcf1849985eb7e79ccc1945b71c7293dc0b2b5a2034606.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4880
- C:\Windows\SysWOW64\cscript.exe
  cscript //nologo "C:\Users\Admin\AppData\Local\Temp\\temp_script.jse"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Users\Admin\AppData\Local\Temp\6xlFrOdT.exe
    "C:\Users\Admin\AppData\Local\Temp\6xlFrOdT.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Persistence

Privilege Escalation

Defense Evasion

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\6xlFrOdT.exe

Filesize
74KB

MD5
4902564a38698bd29dbb1936dc948f7f

SHA1
67ea718f7848ba1e0c7e4a21de2f98a03a1e1953

SHA256
3c914dc535afe68c25901e93a5c7653fd5006b15c94bfad2eecef52453adf976

SHA512
039a9ca2fbf2340635f956df991737e6ffa20225072256f047c31aa02c230df69dfbc1c8bc31fca708028b615b94e89deb2f306b4ac3a9239649d81e32297d11

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp_script.jse

Filesize
99KB

MD5
4e6ca483db6c8d6f5f15cc90328e1154

SHA1
76e656b28bbdc4a2fdaf44a7182e1b2b4eb0d147

SHA256
3a40030eb371052e3a955b625eff440b03b8dd0a161b488063791812dbdd0a10

SHA512
7e03d689d3cf8bca317f013788a988c3f2071445ae76bcac5ef61b79676a6d4f072081abe03ea58248a14f8170643d925d2faf0c158a621e18d8b8ff95578554

Download Submit
memory/3532-20-0x0000000000C50000-0x0000000000C68000-memory.dmp

Filesize
96KB

Download
memory/3532-19-0x00007FF901373000-0x00007FF901375000-memory.dmp

Filesize
8KB

Download
memory/3532-22-0x00007FF901370000-0x00007FF901E31000-memory.dmp

Filesize
10.8MB

Download
memory/3532-23-0x00007FF901370000-0x00007FF901E31000-memory.dmp

Filesize
10.8MB

Download
memory/4880-24-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download