asyncrat | 23309395f893ecd390ec0cc5107968632223f44aba90a414c5e1503e48201abe

General

Target

23309395f893ecd390ec0cc5107968632223f44aba90a414c5e1503e48201abeN.exe
Size

369KB
MD5

0d3d00dd6b3a9b921988ff04d13aff30
SHA1

8f5e2f7430d88187f60a3a2c130796580cea6839
SHA256

23309395f893ecd390ec0cc5107968632223f44aba90a414c5e1503e48201abe
SHA512

b2e29f911ef5c29ac4b72ce56ffbefb6613011577bbcc942511a6a5c2f8d127df884be0d2436956173d137c7cf438acddc980192723f21f536fb8caf0575650b
SSDEEP

3072:Nv588HEAmjc+U1B4/gjybW0z4j0+uidj2A3v1Z4voth3jLD+uFab:1EAmg++41G2gD4sPSb

Score

10^/10

asyncrat venomrat default discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

51.161.12.215:4449

Mutex

olzlzaglbcqbb

Attributes

delay
9
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
Asyncrat family
asyncrat

VenomRAT 2 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/files/0x000a000000023b8f-14.dat	VenomRAT
behavioral2/memory/1104-22-0x0000000000720000-0x0000000000738000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000a000000023b8f-14.dat	family_asyncrat

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	cscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	TaSSIDSS.exe

Executes dropped EXE 2 IoCs

pid	Process
1104	TaSSIDSS.exe
1940	svchost.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4028	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

pid	Process
4012	schtasks.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1104	TaSSIDSS.exe
1940	svchost.exe
1940	svchost.exe
1940	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	TaSSIDSS.exe
Token: SeDebugPrivilege	1104	TaSSIDSS.exe
Token: SeDebugPrivilege	1940	svchost.exe
Token: SeDebugPrivilege	1940	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1940	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 1296	1116	23309395f893ecd390ec0cc5107968632223f44aba90a414c5e1503e48201abeN.exe	83
PID 1116 wrote to memory of 1296	1116	23309395f893ecd390ec0cc5107968632223f44aba90a414c5e1503e48201abeN.exe	83
PID 1296 wrote to memory of 1104	1296	cscript.exe	85
PID 1296 wrote to memory of 1104	1296	cscript.exe	85
PID 1104 wrote to memory of 1416	1104	TaSSIDSS.exe	87
PID 1104 wrote to memory of 1416	1104	TaSSIDSS.exe	87
PID 1104 wrote to memory of 1932	1104	TaSSIDSS.exe	89
PID 1104 wrote to memory of 1932	1104	TaSSIDSS.exe	89
PID 1416 wrote to memory of 4012	1416	cmd.exe	91
PID 1416 wrote to memory of 4012	1416	cmd.exe	91
PID 1932 wrote to memory of 4028	1932	cmd.exe	92
PID 1932 wrote to memory of 4028	1932	cmd.exe	92
PID 1932 wrote to memory of 1940	1932	cmd.exe	93
PID 1932 wrote to memory of 1940	1932	cmd.exe	93

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\23309395f893ecd390ec0cc5107968632223f44aba90a414c5e1503e48201abeN.exe
"C:\Users\Admin\AppData\Local\Temp\23309395f893ecd390ec0cc5107968632223f44aba90a414c5e1503e48201abeN.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\SYSTEM32\cscript.exe
  cscript //nologo "C:\Users\Admin\AppData\Local\Temp\\s26yKdLOv2I.jse"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1296
- - C:\Users\Admin\AppData\Local\Temp\TaSSIDSS.exe
    "C:\Users\Admin\AppData\Local\Temp\TaSSIDSS.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1104
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1416
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:4012
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDAC0.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1932
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:4028
    - - C:\Users\Admin\AppData\Roaming\svchost.exe
        
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        5⤵
        Executes dropped EXE
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:1940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

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

3

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
74KB

MD5
f23c5236c2569784c604586b7785cb34

SHA1
2df47f5f2f691467e855673a7be3434fb1f5d248

SHA256
8ce03b1a750fcab81bda029dab94f8e3cbd9d80296d0842e2594a0afa1d89423

SHA512
2903a69c4301623c691d969e441c47c075db758c0a985695c26bd959ca860f56fd1f4624654b4566d6ceb5eb57bbf5226f0d98d426419cbda396f59c45a2b9fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\s26yKdLOv2I.jse

Filesize
99KB

MD5
95b416f68b850d050cf2569fb6147298

SHA1
0d9524eac49239770b3e3df5872f2474da9f33f0

SHA256
af2eabc91027718f03ee41d304dcc4cfdaf2533bd1121c8e0e5e25f559e997de

SHA512
e3fc4a5785a4850d9e186815981eadaf731b02b4b5c5060aca0e09ba77c71028dbc8e57c819013e1ce14667aa5b080e94686abcccd1d3159449de05843bf6411

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDAC0.tmp.bat

Filesize
151B

MD5
5b485c3c686c312d4f7b0ab381256612

SHA1
c2a98325f92b769b4cebb08ba5611e01200a36c4

SHA256
4255557310e4a58ce48bb6f9e6a4c3708c26e538aedbe2abf8c7ed9523e96720

SHA512
186e59f6ab2e2f4a72cf2d69022a717db7a85d3dc6d895df72a22b204b3dae71e20ebb26761fd1f401ee16876394c38842b3f4db3263f730a04a3ccc8000c5d1

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/1104-21-0x00007FFA034F3000-0x00007FFA034F5000-memory.dmp

Filesize
8KB

Download
memory/1104-22-0x0000000000720000-0x0000000000738000-memory.dmp

Filesize
96KB

Download
memory/1104-24-0x00007FFA034F0000-0x00007FFA03FB1000-memory.dmp

Filesize
10.8MB

Download
memory/1104-25-0x00007FFA034F3000-0x00007FFA034F5000-memory.dmp

Filesize
8KB

Download
memory/1104-30-0x00007FFA034F0000-0x00007FFA03FB1000-memory.dmp

Filesize
10.8MB

Download
memory/1116-0-0x000002520CFE0000-0x000002520D01A000-memory.dmp

Filesize
232KB

Download
memory/1116-1-0x000002520CFE0000-0x000002520D01A000-memory.dmp

Filesize
232KB

Download
memory/1116-33-0x00007FF6B6A70000-0x00007FF6B6AD0000-memory.dmp

Filesize
384KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads