asyncrat | 9d9a79f4ae9bf7a992945f6c06c5bec642c05e4e828217c50255dabfa3677006

max time kernel
4s
max time network
0s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-09-2024 21:01

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General

Target

RebelCracked.exe
Size

344KB
MD5

a84fd0fc75b9c761e9b7923a08da41c7
SHA1

2597048612041cd7a8c95002c73e9c2818bb2097
SHA256

9d9a79f4ae9bf7a992945f6c06c5bec642c05e4e828217c50255dabfa3677006
SHA512

a17f1144a0e3ce07c7ed6891987c5b969f291e9991442c33750028d35e2194794e8a649c397e8afc9f8ce19d485c453600c75cab4fcead09e38414d85819251a
SSDEEP

6144:lOcpeK8lucxAtLNFHUVuI/2zj1z6jZ755NofmWx4PCQL23wBw7R0ljTwrVuAdJKp:QcpSnx0LNFDQ60Ntbo5d7gBw7R7rbdJk

Score

10^/10

asyncrat stormkitty default discovery rat stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

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
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2244-19-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty
behavioral1/memory/2244-26-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty
behavioral1/memory/2244-28-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty
behavioral1/memory/2244-24-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty
behavioral1/memory/2244-21-0x0000000000400000-0x0000000000432000-memory.dmp	family_stormkitty

Executes dropped EXE 4 IoCs

Processes:

RuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exe

pid process

2356 RuntimeBroker.exe
2244 RuntimeBroker.exe
3048 RuntimeBroker.exe
2584 RuntimeBroker.exe
Loads dropped DLL 1 IoCs

Processes:

RuntimeBroker.exe

pid process

2356 RuntimeBroker.exe

pid	process
2356	RuntimeBroker.exe
2244	RuntimeBroker.exe
3048	RuntimeBroker.exe
2584	RuntimeBroker.exe

pid	process
2356	RuntimeBroker.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

RuntimeBroker.exeRuntimeBroker.exe

description	pid	process	target process
PID 2356 set thread context of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 set thread context of 2584	3048	RuntimeBroker.exe	RuntimeBroker.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 4 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

Processes:

RuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RuntimeBroker.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RuntimeBroker.exeRuntimeBroker.exe

description pid process

Token: SeDebugPrivilege 2244 RuntimeBroker.exe
Token: SeDebugPrivilege 2584 RuntimeBroker.exe

description	pid	process
Token: SeDebugPrivilege	2244	RuntimeBroker.exe
Token: SeDebugPrivilege	2584	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

RebelCracked.exeRuntimeBroker.exeRebelCracked.exeRuntimeBroker.exe

description	pid	process	target process
PID 876 wrote to memory of 2356	876	RebelCracked.exe	RuntimeBroker.exe
PID 876 wrote to memory of 2356	876	RebelCracked.exe	RuntimeBroker.exe
PID 876 wrote to memory of 2356	876	RebelCracked.exe	RuntimeBroker.exe
PID 876 wrote to memory of 2356	876	RebelCracked.exe	RuntimeBroker.exe
PID 876 wrote to memory of 2640	876	RebelCracked.exe	RebelCracked.exe
PID 876 wrote to memory of 2640	876	RebelCracked.exe	RebelCracked.exe
PID 876 wrote to memory of 2640	876	RebelCracked.exe	RebelCracked.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2356 wrote to memory of 2244	2356	RuntimeBroker.exe	RuntimeBroker.exe
PID 2640 wrote to memory of 3048	2640	RebelCracked.exe	RuntimeBroker.exe
PID 2640 wrote to memory of 3048	2640	RebelCracked.exe	RuntimeBroker.exe
PID 2640 wrote to memory of 3048	2640	RebelCracked.exe	RuntimeBroker.exe
PID 2640 wrote to memory of 3048	2640	RebelCracked.exe	RuntimeBroker.exe
PID 2640 wrote to memory of 2816	2640	RebelCracked.exe	RebelCracked.exe
PID 2640 wrote to memory of 2816	2640	RebelCracked.exe	RebelCracked.exe
PID 2640 wrote to memory of 2816	2640	RebelCracked.exe	RebelCracked.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe
PID 3048 wrote to memory of 2584	3048	RuntimeBroker.exe	RuntimeBroker.exe

C:\Users\Admin\AppData\Local\Temp\RebelCracked.exe
"C:\Users\Admin\AppData\Local\Temp\RebelCracked.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:876
- C:\Users\Admin\AppData\Local\RuntimeBroker.exe
  "C:\Users\Admin\AppData\Local\RuntimeBroker.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2356
- - C:\Users\Admin\AppData\Local\RuntimeBroker.exe
    "C:\Users\Admin\AppData\Local\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2244
- C:\Users\Admin\AppData\Local\Temp\RebelCracked.exe
  "C:\Users\Admin\AppData\Local\Temp\RebelCracked.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Users\Admin\AppData\Local\RuntimeBroker.exe
    "C:\Users\Admin\AppData\Local\RuntimeBroker.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3048
  - - C:\Users\Admin\AppData\Local\RuntimeBroker.exe
      "C:\Users\Admin\AppData\Local\RuntimeBroker.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2584
- - C:\Users\Admin\AppData\Local\Temp\RebelCracked.exe
    "C:\Users\Admin\AppData\Local\Temp\RebelCracked.exe"
    3⤵
    PID:2816

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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\RuntimeBroker.exe

Filesize
330KB

MD5
75e456775c0a52b6bbe724739fa3b4a7

SHA1
1f4c575e98d48775f239ceae474e03a3058099ea

SHA256
e8d52d0d352317b3da0be6673099d32e10e7b0e44d23a0c1a6a5277d37b95cf3

SHA512
b376146c6fa91f741d69acf7b02a57442d2ea059be37b9bdb06af6cc01272f4ded1a82e4e21b9c803d0e91e22fc12f70391f5e8c8704d51b2435afc9624e8471

Download Submit
memory/876-10-0x000007FEF5E50000-0x000007FEF683C000-memory.dmp

Filesize
9.9MB

Download
memory/876-1-0x0000000000C80000-0x0000000000CDC000-memory.dmp

Filesize
368KB

Download
memory/876-4-0x000007FEF5E50000-0x000007FEF683C000-memory.dmp

Filesize
9.9MB

Download
memory/876-0-0x000007FEF5E53000-0x000007FEF5E54000-memory.dmp

Filesize
4KB

Download
memory/2244-15-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2244-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2244-17-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2244-21-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2244-19-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2244-26-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2244-28-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2244-24-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2356-9-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2356-13-0x0000000000410000-0x000000000041A000-memory.dmp

Filesize
40KB

Download
memory/2356-12-0x0000000000460000-0x00000000004AA000-memory.dmp

Filesize
296KB

Download
memory/2356-11-0x00000000013D0000-0x0000000001428000-memory.dmp

Filesize
352KB

Download