asyncrat | 58f0420c1b0b04f11ca26a87616bb032360d9a12475712f700be3e1d248c28c1

General

Target

58f0420c1b0b04f11ca26a87616bb032360d9a12475712f700be3e1d248c28c1.exe
Size

369KB
MD5

2fd0b895bf8132884dd68465a1d516f6
SHA1

83c48ee12b44ebb14f0c75c0d7f2f46d53c93cef
SHA256

58f0420c1b0b04f11ca26a87616bb032360d9a12475712f700be3e1d248c28c1
SHA512

de4d8e599b52da46df6c9ef024d6fc471ed736148c285c409fb039e487efb28c95abe2b29e79cdb9a3d87c92578569c2fb3a7f231833d5304cba0eac55ccb9d1
SSDEEP

3072:Nv588HEAmjc+U1B4/gjybW0z4j0+uidj2A3v1Z4voth3jLD+uFaZ:1EAmg++41G2gD4sPSZ

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/0x0007000000023ca4-14.dat	VenomRAT
behavioral2/memory/4588-22-0x0000000000C10000-0x0000000000C28000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0007000000023ca4-14.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	cscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	TaSSIDSS.exe

Executes dropped EXE 2 IoCs

pid	Process
4588	TaSSIDSS.exe
2964	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
4520	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
3972	schtasks.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
4588	TaSSIDSS.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	TaSSIDSS.exe
Token: SeDebugPrivilege	4588	TaSSIDSS.exe
Token: SeDebugPrivilege	2964	svchost.exe
Token: SeDebugPrivilege	2964	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2964	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 1600	2516	58f0420c1b0b04f11ca26a87616bb032360d9a12475712f700be3e1d248c28c1.exe	82
PID 2516 wrote to memory of 1600	2516	58f0420c1b0b04f11ca26a87616bb032360d9a12475712f700be3e1d248c28c1.exe	82
PID 1600 wrote to memory of 4588	1600	cscript.exe	84
PID 1600 wrote to memory of 4588	1600	cscript.exe	84
PID 4588 wrote to memory of 4184	4588	TaSSIDSS.exe	89
PID 4588 wrote to memory of 4184	4588	TaSSIDSS.exe	89
PID 4588 wrote to memory of 1820	4588	TaSSIDSS.exe	91
PID 4588 wrote to memory of 1820	4588	TaSSIDSS.exe	91
PID 4184 wrote to memory of 3972	4184	cmd.exe	93
PID 4184 wrote to memory of 3972	4184	cmd.exe	93
PID 1820 wrote to memory of 4520	1820	cmd.exe	94
PID 1820 wrote to memory of 4520	1820	cmd.exe	94
PID 1820 wrote to memory of 2964	1820	cmd.exe	96
PID 1820 wrote to memory of 2964	1820	cmd.exe	96

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\58f0420c1b0b04f11ca26a87616bb032360d9a12475712f700be3e1d248c28c1.exe
"C:\Users\Admin\AppData\Local\Temp\58f0420c1b0b04f11ca26a87616bb032360d9a12475712f700be3e1d248c28c1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SYSTEM32\cscript.exe
  cscript //nologo "C:\Users\Admin\AppData\Local\Temp\\aSGGWUzDrA6.jse"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1600
- - 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:4588
  - - 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:4184
    - - 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:3972
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC97A.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1820
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:4520
    - - 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:2964

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\aSGGWUzDrA6.jse

Filesize
99KB

MD5
95b416f68b850d050cf2569fb6147298

SHA1
0d9524eac49239770b3e3df5872f2474da9f33f0

SHA256
af2eabc91027718f03ee41d304dcc4cfdaf2533bd1121c8e0e5e25f559e997de

SHA512
e3fc4a5785a4850d9e186815981eadaf731b02b4b5c5060aca0e09ba77c71028dbc8e57c819013e1ce14667aa5b080e94686abcccd1d3159449de05843bf6411

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC97A.tmp.bat

Filesize
151B

MD5
619c86f66bce95a0a1462b062e8b6026

SHA1
0403b27cda87150e534217f4828ce70d3f13a97a

SHA256
e7e5c378ee5b21760b5c9674f7dd216223af0b2452d0580f61ecce6c01e51885

SHA512
fbf87a46f34f57d5fe4538a759b1a4f5e22448c5daa79833e12ea490925d4b4be0ffdbf7d0cb0be6508b4c6b9f45c303b6dcff07d11891d034a7c3427050e43f

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2516-0-0x000002041AAB0000-0x000002041AAEA000-memory.dmp

Filesize
232KB

Download
memory/2516-1-0x000002041AAB0000-0x000002041AAEA000-memory.dmp

Filesize
232KB

Download
memory/2516-25-0x00007FF7B3B60000-0x00007FF7B3BC0000-memory.dmp

Filesize
384KB

Download
memory/2516-33-0x00007FF7B3B60000-0x00007FF7B3BC0000-memory.dmp

Filesize
384KB

Download
memory/4588-21-0x00007FFCE9D23000-0x00007FFCE9D25000-memory.dmp

Filesize
8KB

Download
memory/4588-22-0x0000000000C10000-0x0000000000C28000-memory.dmp

Filesize
96KB

Download
memory/4588-24-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

Filesize
10.8MB

Download
memory/4588-30-0x00007FFCE9D20000-0x00007FFCEA7E1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads