asyncrat | f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7

General

Target

f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe
Size

74KB
MD5

3375f15f1b089ac7a6208e668875b167
SHA1

dc24a6b9d1b2c38b65cd6bab2288def8cf5b098b
SHA256

f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7
SHA512

b61b9b53116e6c504f0e568421473720ca65d08f9a9d0e062eab6260bd1bf8a39df5c0ebe45c0663731ee23770a208e36506c30c2f107641223c366a1d55608f
SSDEEP

1536:UUqAcxOIWC72PMV+e9VdQuDIqH1bd/9+wGQzcOLVclN:UUTcxONo2PMV+e9VdQ4H1bdoQHBY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

80.253.246.53:2000

Mutex

ghnogqnqsw

Attributes

delay
1
install
true
install_file
SystemUpdate.exe
install_folder
%AppData%

aes.plain

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

Processes:

resource	yara_rule
behavioral1/memory/1848-1-0x0000000000CA0000-0x0000000000CB8000-memory.dmp	VenomRAT
C:\Users\Admin\AppData\Roaming\SystemUpdate.exe	VenomRAT
behavioral1/memory/2672-18-0x0000000000990000-0x00000000009A8000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\SystemUpdate.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

SystemUpdate.exe

pid process

2672 SystemUpdate.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
evasion

Processes:

timeout.exe

pid process

2684 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

2780 schtasks.exe

pid	process
2672	SystemUpdate.exe

pid	process
2684	timeout.exe

pid	process
2780	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exeSystemUpdate.exe

pid	process
1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe
1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe
1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe
2672	SystemUpdate.exe
2672	SystemUpdate.exe
2672	SystemUpdate.exe
2672	SystemUpdate.exe
2672	SystemUpdate.exe
2672	SystemUpdate.exe
2672	SystemUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exeSystemUpdate.exe

description	pid	process
Token: SeDebugPrivilege	1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe
Token: SeDebugPrivilege	2672	SystemUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

SystemUpdate.exe

pid process

2672 SystemUpdate.exe

pid	process
2672	SystemUpdate.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.execmd.execmd.exe

description	pid	process	target process
PID 1848 wrote to memory of 3056	1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe	cmd.exe
PID 1848 wrote to memory of 3056	1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe	cmd.exe
PID 1848 wrote to memory of 3056	1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe	cmd.exe
PID 1848 wrote to memory of 2700	1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe	cmd.exe
PID 1848 wrote to memory of 2700	1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe	cmd.exe
PID 1848 wrote to memory of 2700	1848	f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe	cmd.exe
PID 3056 wrote to memory of 2780	3056	cmd.exe	schtasks.exe
PID 3056 wrote to memory of 2780	3056	cmd.exe	schtasks.exe
PID 3056 wrote to memory of 2780	3056	cmd.exe	schtasks.exe
PID 2700 wrote to memory of 2684	2700	cmd.exe	timeout.exe
PID 2700 wrote to memory of 2684	2700	cmd.exe	timeout.exe
PID 2700 wrote to memory of 2684	2700	cmd.exe	timeout.exe
PID 2700 wrote to memory of 2672	2700	cmd.exe	SystemUpdate.exe
PID 2700 wrote to memory of 2672	2700	cmd.exe	SystemUpdate.exe
PID 2700 wrote to memory of 2672	2700	cmd.exe	SystemUpdate.exe

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\f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe
"C:\Users\Admin\AppData\Local\Temp\f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "SystemUpdate" /tr '"C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "SystemUpdate" /tr '"C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2780
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp97BD.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2684
- - C:\Users\Admin\AppData\Roaming\SystemUpdate.exe
    "C:\Users\Admin\AppData\Roaming\SystemUpdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2672

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\tmp97BD.tmp.bat

Filesize
156B

MD5
3ad8fe7acdb1aa8dbed23f10bc941c10

SHA1
099a28fd4c996c6d3bb42848e7c763d74d0d31ab

SHA256
5e22fe73c94c834d3ccf9516e45c39f4d48a2d901a71b2796dfe4704585e289c

SHA512
c08c2a5bbfb96e2741a0b9f0ce38d83610ee7665131d27172c03075e992f96dba6947d20e2be8d151afb0b473562bf45b6be48e9192652f71f01b023c6ecdb27

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\SystemUpdate.exe

Filesize
74KB

MD5
3375f15f1b089ac7a6208e668875b167

SHA1
dc24a6b9d1b2c38b65cd6bab2288def8cf5b098b

SHA256
f396605e7a50772fd0242a38a77ed525cd51f1d226117893193b0d4a67d5a2c7

SHA512
b61b9b53116e6c504f0e568421473720ca65d08f9a9d0e062eab6260bd1bf8a39df5c0ebe45c0663731ee23770a208e36506c30c2f107641223c366a1d55608f

Download Submit
memory/1848-0-0x000007FEF4BD3000-0x000007FEF4BD4000-memory.dmp

Filesize
4KB

Download
memory/1848-1-0x0000000000CA0000-0x0000000000CB8000-memory.dmp

Filesize
96KB

Download
memory/1848-3-0x000007FEF4BD0000-0x000007FEF55BC000-memory.dmp

Filesize
9.9MB

Download
memory/1848-11-0x000007FEF4BD0000-0x000007FEF55BC000-memory.dmp

Filesize
9.9MB

Download
memory/1848-14-0x000007FEF4BD0000-0x000007FEF55BC000-memory.dmp

Filesize
9.9MB

Download
memory/2672-18-0x0000000000990000-0x00000000009A8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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