asyncrat | 3e8a98ded7fab1daa8a07a2a035f28a2e4f3404f79d59285ac6f11180d1211d4

General

Target

PantiBootStrapper.exe
Size

74KB
MD5

843f9a8b2e3284b06d2d343cbcf5a884
SHA1

da31933428722d65568ead0f7b20b72ba423680e
SHA256

3e8a98ded7fab1daa8a07a2a035f28a2e4f3404f79d59285ac6f11180d1211d4
SHA512

4b2751733006050154d7ff9bb77d70cbf39705041ca5a3c53b752b06f7a9ef197575a93ef3d4ba21fd853c598add7591c7f8b8176d43eb444900668f56f6b694
SSDEEP

1536:JUKkcx9pXCTyPMVvWC+I4H1bF/5RAMQzc6LVclN:JUDcx958yPMVvWCwH1bFfQrBY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

195.88.218.126:2404

Mutex

mojnuowhevbf

Attributes

delay
1
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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0008000000019030-17.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2832	svchost.exe

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

defense_evasion

pid	Process
2712	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
2720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2376	PantiBootStrapper.exe
2376	PantiBootStrapper.exe
2376	PantiBootStrapper.exe
2832	svchost.exe
2832	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2376	PantiBootStrapper.exe
Token: SeDebugPrivilege	2832	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2832	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 3008	2376	PantiBootStrapper.exe	31
PID 2376 wrote to memory of 3008	2376	PantiBootStrapper.exe	31
PID 2376 wrote to memory of 3008	2376	PantiBootStrapper.exe	31
PID 2376 wrote to memory of 1788	2376	PantiBootStrapper.exe	32
PID 2376 wrote to memory of 1788	2376	PantiBootStrapper.exe	32
PID 2376 wrote to memory of 1788	2376	PantiBootStrapper.exe	32
PID 1788 wrote to memory of 2712	1788	cmd.exe	35
PID 1788 wrote to memory of 2712	1788	cmd.exe	35
PID 1788 wrote to memory of 2712	1788	cmd.exe	35
PID 3008 wrote to memory of 2720	3008	cmd.exe	36
PID 3008 wrote to memory of 2720	3008	cmd.exe	36
PID 3008 wrote to memory of 2720	3008	cmd.exe	36
PID 1788 wrote to memory of 2832	1788	cmd.exe	37
PID 1788 wrote to memory of 2832	1788	cmd.exe	37
PID 1788 wrote to memory of 2832	1788	cmd.exe	37

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\PantiBootStrapper.exe
"C:\Users\Admin\AppData\Local\Temp\PantiBootStrapper.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2376
- 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
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3008
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2720
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpCA8F.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1788
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2712
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2832

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpCA8F.tmp.bat

Filesize
151B

MD5
b4096e0d7f6abc535477a6ec6b70338c

SHA1
881161c2b616dbbf6c55feca5bc15a3f0f640ce0

SHA256
328e793d81d79920b05255367750ee0e984f8a16b0c397dcff74717f196bcadb

SHA512
0bbaa0e057b0bf8fbc508ef72485f88fa0b58abb43a4f0be213b922e9cc366732c00f9c2680e489799f3cfdb3a8715bfb77cad0d1334e263fa8b193ec5e4ed9e

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
74KB

MD5
843f9a8b2e3284b06d2d343cbcf5a884

SHA1
da31933428722d65568ead0f7b20b72ba423680e

SHA256
3e8a98ded7fab1daa8a07a2a035f28a2e4f3404f79d59285ac6f11180d1211d4

SHA512
4b2751733006050154d7ff9bb77d70cbf39705041ca5a3c53b752b06f7a9ef197575a93ef3d4ba21fd853c598add7591c7f8b8176d43eb444900668f56f6b694

Download Submit
memory/2376-0-0x000007FEF5983000-0x000007FEF5984000-memory.dmp

Filesize
4KB

Download
memory/2376-1-0x0000000000860000-0x0000000000878000-memory.dmp

Filesize
96KB

Download
memory/2376-3-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/2376-14-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/2376-12-0x000007FEF5980000-0x000007FEF636C000-memory.dmp

Filesize
9.9MB

Download
memory/2832-18-0x0000000000180000-0x0000000000198000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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