asyncrat | 56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278

General

Target

56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe
Size

95KB
MD5

bed020cbba2610b31af66357db97c10c
SHA1

d4c68500e5f8125b60976af885172253a435cc78
SHA256

56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278
SHA512

08fb0c1fa421dbdd61aa57d2adc7127cf7def12e88db054515be18ec05207e6f93ad775316137267d77e987e0145439e293af4784eb9b17826d9cb39fdedd931
SSDEEP

1536:6GCx35SC0o7Yrcpv41Efir+XKEkRi/gN2ieJOW56+Cj5sVMH:6GO35SBrcpgSfPLkEybeJL56+CtYMH

Score

10^/10

asyncrat xworm default discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

testarosa.duckdns.org:7110

Mutex

H1C6pa3caMCcJ1BG

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe

aes.plain

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

103.174.191.71:6606

103.174.191.71:7707

103.174.191.71:8808

Mutex

HFE2t0VQV50q

Attributes

delay
3
install
false
install_file
game.exe
install_folder
%AppData%

aes.plain

Signatures

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

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000800000002341a-16.dat	family_xworm
behavioral2/memory/2664-25-0x0000000000A50000-0x0000000000A60000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x00090000000233b9-6.dat	family_asyncrat

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4512	powershell.exe
2276	powershell.exe
956	powershell.exe
3572	powershell.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	conhost.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe

Executes dropped EXE 4 IoCs

pid	Process
4760	AsyncClient2.exe
2664	conhost.exe
4912	svchost.exe
3512	svchost.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	AsyncClient2.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

pid	Process
2172	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4512	powershell.exe
4512	powershell.exe
2276	powershell.exe
2276	powershell.exe
956	powershell.exe
956	powershell.exe
3572	powershell.exe
3572	powershell.exe
2664	conhost.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	conhost.exe
Token: SeDebugPrivilege	4512	powershell.exe
Token: SeDebugPrivilege	2276	powershell.exe
Token: SeDebugPrivilege	956	powershell.exe
Token: SeDebugPrivilege	4760	AsyncClient2.exe
Token: SeDebugPrivilege	4760	AsyncClient2.exe
Token: SeDebugPrivilege	3572	powershell.exe
Token: SeDebugPrivilege	4912	svchost.exe
Token: SeDebugPrivilege	3512	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2664	conhost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4188 wrote to memory of 4760	4188	56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe	83
PID 4188 wrote to memory of 4760	4188	56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe	83
PID 4188 wrote to memory of 4760	4188	56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe	83
PID 4188 wrote to memory of 2664	4188	56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe	84
PID 4188 wrote to memory of 2664	4188	56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe	84
PID 2664 wrote to memory of 4512	2664	conhost.exe	88
PID 2664 wrote to memory of 4512	2664	conhost.exe	88
PID 2664 wrote to memory of 2276	2664	conhost.exe	90
PID 2664 wrote to memory of 2276	2664	conhost.exe	90
PID 2664 wrote to memory of 956	2664	conhost.exe	92
PID 2664 wrote to memory of 956	2664	conhost.exe	92
PID 2664 wrote to memory of 3572	2664	conhost.exe	95
PID 2664 wrote to memory of 3572	2664	conhost.exe	95
PID 2664 wrote to memory of 2172	2664	conhost.exe	97
PID 2664 wrote to memory of 2172	2664	conhost.exe	97

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe
"C:\Users\Admin\AppData\Local\Temp\56d98688e5aa501787a31e98f9666b80002bb692e793257bb3a6f6f9cace8278.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4188
- C:\Users\Admin\AppData\Roaming\AsyncClient2.exe
  "C:\Users\Admin\AppData\Roaming\AsyncClient2.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4760
- C:\Users\Admin\AppData\Roaming\conhost.exe
  "C:\Users\Admin\AppData\Roaming\conhost.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\conhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4512
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'conhost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2276
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:956
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3572
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Local\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2172

C:\Users\Admin\AppData\Local\svchost.exe
C:\Users\Admin\AppData\Local\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4912

C:\Users\Admin\AppData\Local\svchost.exe
C:\Users\Admin\AppData\Local\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

Query Registry

2

T1012

System Information Discovery

2

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\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
cae60f0ddddac635da71bba775a2c5b4

SHA1
386f1a036af61345a7d303d45f5230e2df817477

SHA256
b2dd636b7b0d3bfe44cef5e1175828b1fa7bd84d5563f54342944156ba996c16

SHA512
28ed8a8bc132ef56971cfd7b517b17cdb74a7f8c247ef6bff232996210075e06aa58a415825a1e038cfb547ad3dc6882bf1ca1b68c5b360ef0512a1440850253

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
a2c8179aaa149c0b9791b73ce44c04d1

SHA1
703361b0d43ec7f669304e7c0ffbbfdeb1e484ff

SHA256
c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a

SHA512
2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c53xyapv.cio.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\AsyncClient2.exe

Filesize
47KB

MD5
a4a7054ac8b42e6b6f60cf3cfb91916c

SHA1
4c32f6e0052bd83bae5a0516291972fc653262ce

SHA256
6a7acd0370583f01bff43b579ad0d45f29eedf6f004e70c4b0e793f7ea6c0448

SHA512
6603572c46f0074857746e80d0d2a761312f7ccc5f55df6e1401f902a061d0375d298d23aabbfb93e02e19c655399e4916c4fcd6cd5da4dba661d6334277d11e

Download Submit
C:\Users\Admin\AppData\Roaming\conhost.exe

Filesize
38KB

MD5
4c8f94ebfbc432a1cceb1b9d482ed339

SHA1
a7f2f1bfcbc3588a7fa6cf2aed8f2e070e771ab4

SHA256
37af26ecde5f39f377ccbc8823ed773e4b70341569ae671ab82f4571af524bed

SHA512
fcadd0c00db8159fe2752039c673188c2d8ab0f1a7161cc410be83aa1ec67b3eee877486ab05950c27716d249715ca3c0f9d47a5a4e4753835d3a6478a8b540e

Download Submit
memory/2664-79-0x00007FFEC3A50000-0x00007FFEC4511000-memory.dmp

Filesize
10.8MB

Download
memory/2664-25-0x0000000000A50000-0x0000000000A60000-memory.dmp

Filesize
64KB

Download
memory/2664-78-0x000000001B8A0000-0x000000001B8B0000-memory.dmp

Filesize
64KB

Download
memory/2664-26-0x00007FFEC3A50000-0x00007FFEC4511000-memory.dmp

Filesize
10.8MB

Download
memory/2664-81-0x000000001B8A0000-0x000000001B8B0000-memory.dmp

Filesize
64KB

Download
memory/4188-0-0x00007FFEC3A53000-0x00007FFEC3A55000-memory.dmp

Filesize
8KB

Download
memory/4188-1-0x00000000007A0000-0x00000000007BE000-memory.dmp

Filesize
120KB

Download
memory/4512-29-0x0000018120260000-0x0000018120282000-memory.dmp

Filesize
136KB

Download
memory/4760-28-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/4760-52-0x0000000005350000-0x00000000053B6000-memory.dmp

Filesize
408KB

Download
memory/4760-27-0x00000000009C0000-0x00000000009D2000-memory.dmp

Filesize
72KB

Download
memory/4760-64-0x0000000005830000-0x00000000058CC000-memory.dmp

Filesize
624KB

Download
memory/4760-80-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads