asyncrat | cc16889abbfe38386a105e602d856c512a2dfd51795ad55092ab27983e70b3b5

General

Target

MoonStealer-main/MoonStealer_assets/upx/updater.exe
Size

48KB
MD5

403e30df6166df14523e6f820703241a
SHA1

9f00e1baf4313fd33a513251b494d2340e88a91b
SHA256

e57f42b4a9e3305785a2a6e1ffb14fa82d90d5094e8e5ecb3cd8fcb903637d92
SHA512

885dfaf6fd4c14dcfa223a7a8cb3258b4c81da589eacb5d2da5d4ffbeb594ec2c9483ab1d75fc7a9b6cd1567cf82f94ded18ace4e14540f2f48033eed2f16a44
SSDEEP

768:qu4f9TskvpDWUPlNxmo2qbebAN6JunAjZPIBj8wucDO30b9IxgaOMtV+rhG/BDZ3:qu4f9Tswb2FbNuA6BGgb9I6aH3+4Jdm2

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

23.94.99.6:6606

23.94.99.6:7707

23.94.99.6:8808

23.94.99.6:4782

Mutex

qdWLYmlsI9yW

Attributes

delay
3
install
true
install_file
required.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

Processes:

resource	yara_rule
behavioral1/files/0x000a00000001227e-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

required.exe

pid	Process
2768	required.exe

Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid	Process
2188	cmd.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 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

Processes:

timeout.exerequired.exeupdater.execmd.exeschtasks.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	required.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	updater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
2800	timeout.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

Processes:

schtasks.exe

pid	Process
1540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

updater.exe

pid	Process
2692	updater.exe
2692	updater.exe
2692	updater.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

updater.exerequired.exe

description	pid	Process
Token: SeDebugPrivilege	2692	updater.exe
Token: SeDebugPrivilege	2768	required.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

updater.execmd.execmd.exe

description	pid	Process	procid_target
PID 2692 wrote to memory of 2088	2692	updater.exe	30
PID 2692 wrote to memory of 2088	2692	updater.exe	30
PID 2692 wrote to memory of 2088	2692	updater.exe	30
PID 2692 wrote to memory of 2088	2692	updater.exe	30
PID 2692 wrote to memory of 2188	2692	updater.exe	32
PID 2692 wrote to memory of 2188	2692	updater.exe	32
PID 2692 wrote to memory of 2188	2692	updater.exe	32
PID 2692 wrote to memory of 2188	2692	updater.exe	32
PID 2088 wrote to memory of 1540	2088	cmd.exe	33
PID 2088 wrote to memory of 1540	2088	cmd.exe	33
PID 2088 wrote to memory of 1540	2088	cmd.exe	33
PID 2088 wrote to memory of 1540	2088	cmd.exe	33
PID 2188 wrote to memory of 2800	2188	cmd.exe	35
PID 2188 wrote to memory of 2800	2188	cmd.exe	35
PID 2188 wrote to memory of 2800	2188	cmd.exe	35
PID 2188 wrote to memory of 2800	2188	cmd.exe	35
PID 2188 wrote to memory of 2768	2188	cmd.exe	36
PID 2188 wrote to memory of 2768	2188	cmd.exe	36
PID 2188 wrote to memory of 2768	2188	cmd.exe	36
PID 2188 wrote to memory of 2768	2188	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\MoonStealer-main\MoonStealer_assets\upx\updater.exe
"C:\Users\Admin\AppData\Local\Temp\MoonStealer-main\MoonStealer_assets\upx\updater.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "required" /tr '"C:\Users\Admin\AppData\Roaming\required.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2088
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "required" /tr '"C:\Users\Admin\AppData\Roaming\required.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1540
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpAC17.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2800
- - C:\Users\Admin\AppData\Roaming\required.exe
    "C:\Users\Admin\AppData\Roaming\required.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAC17.tmp.bat

Filesize
152B

MD5
ed0ad78ef1a73721e0f0b17d6e4a9c17

SHA1
a78f518fa089db6e0b78d31610c1033b5dc60cb7

SHA256
5b858c09920d3c750a6bdd4b1ed5097c365f658c794d016196a9bb86c123e9d6

SHA512
7cc89a4b40664c83078ff740325289b553df7a25fcb9a9ef3f1ae31566def59df59efe36642943f49ef90480b82b167f97ed7ce4d49516e1e29bd626d8b855f8

Download Submit
\Users\Admin\AppData\Roaming\required.exe

Filesize
48KB

MD5
403e30df6166df14523e6f820703241a

SHA1
9f00e1baf4313fd33a513251b494d2340e88a91b

SHA256
e57f42b4a9e3305785a2a6e1ffb14fa82d90d5094e8e5ecb3cd8fcb903637d92

SHA512
885dfaf6fd4c14dcfa223a7a8cb3258b4c81da589eacb5d2da5d4ffbeb594ec2c9483ab1d75fc7a9b6cd1567cf82f94ded18ace4e14540f2f48033eed2f16a44

Download Submit
memory/2692-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/2692-1-0x0000000001380000-0x0000000001392000-memory.dmp

Filesize
72KB

Download
memory/2692-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2692-11-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/2768-16-0x0000000000960000-0x0000000000972000-memory.dmp

Filesize
72KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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