asyncrat | 89bb879c72817b511d415cef263f4303784a3f8737a6bbf2b745887522b46ed6

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250207-en
resource tags

arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2025 02:25

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General

Target

AsyncRAT-89bb879c72817b511d415cef263f4303784a3f8737a6bbf2b745887522b46ed6.ps1
Size

279KB
MD5

9749e46693091c6de695c31006ac7795
SHA1

1170a294b8ace6633ae6154141151c15fe516095
SHA256

89bb879c72817b511d415cef263f4303784a3f8737a6bbf2b745887522b46ed6
SHA512

6ed8f03a7d8b38c013ae79abd937c3d662d87803ee56272ed239f43573ef905b1b58a2448de9fb691a2380efca74f935f76422c2267d2bb108329610b3f4cb81
SSDEEP

1536:6qzQRWW6wFEaeQ4pxff1C31i+XL2NXxtIVBM5ryOPe7:j4nLixtN+qd3y3

Score

10^/10

asyncrat stormkitty discovery execution rat stealer

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023cd0-37.dat	family_stormkitty
behavioral2/memory/2496-45-0x0000020290600000-0x0000020290904000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000c000000023cd0-37.dat	family_asyncrat

Downloads MZ/PE file 2 IoCs

flow	pid	Process
52	3524	Process not Found
1	3488	x.exe

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-1-5-21-3311063739-2594902809-44604183-1000\Control Panel\International\Geo\Nation	x.exe

Executes dropped EXE 2 IoCs

pid	Process
3488	x.exe
2496	RegAAsm.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
696	powershell.exe

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 1 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	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3188	MicrosoftEdgeUpdate.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
696	powershell.exe
696	powershell.exe

Suspicious use of AdjustPrivilegeToken 45 IoCs

description	pid	Process
Token: SeDebugPrivilege	696	powershell.exe
Token: SeDebugPrivilege	3488	x.exe
Token: SeDebugPrivilege	2496	RegAAsm.exe
Token: SeIncreaseQuotaPrivilege	2496	RegAAsm.exe
Token: SeSecurityPrivilege	2496	RegAAsm.exe
Token: SeTakeOwnershipPrivilege	2496	RegAAsm.exe
Token: SeLoadDriverPrivilege	2496	RegAAsm.exe
Token: SeSystemProfilePrivilege	2496	RegAAsm.exe
Token: SeSystemtimePrivilege	2496	RegAAsm.exe
Token: SeProfSingleProcessPrivilege	2496	RegAAsm.exe
Token: SeIncBasePriorityPrivilege	2496	RegAAsm.exe
Token: SeCreatePagefilePrivilege	2496	RegAAsm.exe
Token: SeBackupPrivilege	2496	RegAAsm.exe
Token: SeRestorePrivilege	2496	RegAAsm.exe
Token: SeShutdownPrivilege	2496	RegAAsm.exe
Token: SeDebugPrivilege	2496	RegAAsm.exe
Token: SeSystemEnvironmentPrivilege	2496	RegAAsm.exe
Token: SeRemoteShutdownPrivilege	2496	RegAAsm.exe
Token: SeUndockPrivilege	2496	RegAAsm.exe
Token: SeManageVolumePrivilege	2496	RegAAsm.exe
Token: 33	2496	RegAAsm.exe
Token: 34	2496	RegAAsm.exe
Token: 35	2496	RegAAsm.exe
Token: 36	2496	RegAAsm.exe
Token: SeIncreaseQuotaPrivilege	2496	RegAAsm.exe
Token: SeSecurityPrivilege	2496	RegAAsm.exe
Token: SeTakeOwnershipPrivilege	2496	RegAAsm.exe
Token: SeLoadDriverPrivilege	2496	RegAAsm.exe
Token: SeSystemProfilePrivilege	2496	RegAAsm.exe
Token: SeSystemtimePrivilege	2496	RegAAsm.exe
Token: SeProfSingleProcessPrivilege	2496	RegAAsm.exe
Token: SeIncBasePriorityPrivilege	2496	RegAAsm.exe
Token: SeCreatePagefilePrivilege	2496	RegAAsm.exe
Token: SeBackupPrivilege	2496	RegAAsm.exe
Token: SeRestorePrivilege	2496	RegAAsm.exe
Token: SeShutdownPrivilege	2496	RegAAsm.exe
Token: SeDebugPrivilege	2496	RegAAsm.exe
Token: SeSystemEnvironmentPrivilege	2496	RegAAsm.exe
Token: SeRemoteShutdownPrivilege	2496	RegAAsm.exe
Token: SeUndockPrivilege	2496	RegAAsm.exe
Token: SeManageVolumePrivilege	2496	RegAAsm.exe
Token: 33	2496	RegAAsm.exe
Token: 34	2496	RegAAsm.exe
Token: 35	2496	RegAAsm.exe
Token: 36	2496	RegAAsm.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 696 wrote to memory of 3488	696	powershell.exe	87
PID 696 wrote to memory of 3488	696	powershell.exe	87
PID 3488 wrote to memory of 2496	3488	x.exe	101
PID 3488 wrote to memory of 2496	3488	x.exe	101

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\AsyncRAT-89bb879c72817b511d415cef263f4303784a3f8737a6bbf2b745887522b46ed6.ps1
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:696
- C:\Users\Admin\AppData\Local\Temp\x.exe
  "C:\Users\Admin\AppData\Local\Temp\x.exe"
  2⤵
  - Downloads MZ/PE file
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3488
- - C:\Users\Admin\AppData\Local\Temp\RegAAsm.exe
    "C:\Users\Admin\AppData\Local\Temp\RegAAsm.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2496

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI0IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5ODUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODQ0NDQzNjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTkwMjE4NTc0Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegAAsm.exe

Filesize
3.0MB

MD5
8f46c856f33bbb279be7a0726f15016b

SHA1
d53277431505498980f1e460f7fcbb6e5f56b98d

SHA256
7b77cc567a3c5e8a31e8abe7404bc2b39198e51d4b3adae736caf5fbe484e2a6

SHA512
4b0bf3fb9b17e7f194c7ae890ebc2946b0b906223c232d2286d9496c4706622ba83a182d492f6810d275a495bbbe40ab15b3a145e552c916be25e7bc6fc4d6f3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nknls03p.lei.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\x.exe

Filesize
209KB

MD5
c59d7ad9d1de2e41e6f68fc609ed8e2d

SHA1
b6be54300bd6c9ae645bb54f9aa2aa4a5797421c

SHA256
03105bebe53f8a08eebef0f57ff59d2b57ad790691cd819325458e1a5bfadd05

SHA512
d58cee90a4e45f2c5d5c3c3011e08d9e91fa34bb39e234e88744c6aa6a1b963f2021e6c2c22fdcf38fde43b0e3bf9c5c036b1e8f11849243a1a27b802d90e653

Download Submit
memory/696-1-0x00000244EA980000-0x00000244EA9A2000-memory.dmp

Filesize
136KB

Download
memory/696-11-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download
memory/696-12-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download
memory/696-0-0x00007FFBF04C3000-0x00007FFBF04C5000-memory.dmp

Filesize
8KB

Download
memory/696-28-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download
memory/2496-45-0x0000020290600000-0x0000020290904000-memory.dmp

Filesize
3.0MB

Download
memory/3488-24-0x0000000000200000-0x000000000023A000-memory.dmp

Filesize
232KB

Download
memory/3488-30-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download
memory/3488-31-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download
memory/3488-29-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download
memory/3488-27-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download
memory/3488-46-0x00007FFBF04C0000-0x00007FFBF0F81000-memory.dmp

Filesize
10.8MB

Download