asyncrat | 7d739906ed3602a3617329cf9a8c314c4bf0cb898923e53137d6b25b2e3e4595

General

Target

injection.exe
Size

264KB
MD5

a0051fa6f5190c984a269d026a47e7b4
SHA1

380cbbddfcac3fb22bd78f60bf8445f1f1634b94
SHA256

7d739906ed3602a3617329cf9a8c314c4bf0cb898923e53137d6b25b2e3e4595
SHA512

4cc10e504d5351fae69e3a918a9fd4386e10f3e73723ad84989e2fe23ac32fb3e60bfd3a6e777e7bc17f448331393774e31570596ca270307f0d7a250e00d1e0
SSDEEP

3072:Vj+C7lQ52Mrb/x5xrzQdUJ+fYy8xDVY6OVfNoteAPEHBAnpK37nXx8b0uaQ7nlPt:V77MrvxAdU+IFXOOev8tDlPOvXzx1a

Score

10^/10

asyncrat default execution rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

Mutex

lfrlrahocljxyqyr

Attributes

delay
1
install
false
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/xFvrV0SD

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/memory/2856-23-0x00000000005C0000-0x00000000005D8000-memory.dmp	family_asyncrat

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
280	powershell.exe
1544	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2856	SearchApp.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	pastebin.com
4	pastebin.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
280	powershell.exe
1544	powershell.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe
2856	SearchApp.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2556	injection.exe
Token: SeDebugPrivilege	280	powershell.exe
Token: SeDebugPrivilege	1544	powershell.exe
Token: SeDebugPrivilege	2856	SearchApp.exe
Token: SeDebugPrivilege	2856	SearchApp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2856	SearchApp.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 280	2556	injection.exe	30
PID 2556 wrote to memory of 280	2556	injection.exe	30
PID 2556 wrote to memory of 280	2556	injection.exe	30
PID 2556 wrote to memory of 1544	2556	injection.exe	32
PID 2556 wrote to memory of 1544	2556	injection.exe	32
PID 2556 wrote to memory of 1544	2556	injection.exe	32
PID 3044 wrote to memory of 2856	3044	taskeng.exe	36
PID 3044 wrote to memory of 2856	3044	taskeng.exe	36
PID 3044 wrote to memory of 2856	3044	taskeng.exe	36

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\injection.exe
"C:\Users\Admin\AppData\Local\Temp\injection.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2556
- 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\SearchApp.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:280
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SearchApp.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1544

C:\Windows\system32\taskeng.exe
taskeng.exe {0A896017-683F-4CD7-89A6-EE1A51DE426F} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Users\Admin\AppData\Roaming\SearchApp.exe
  C:\Users\Admin\AppData\Roaming\SearchApp.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\55ZUJ431XSU8MIS26A8U.temp

Filesize
7KB

MD5
f8d12ccc6e969a5c566c13bc51ff7a42

SHA1
5ce84b2aec381f04c8397a9066020cc2fb78c963

SHA256
ba999977629614e43892c27c80fbef09b4f292e0e9b6be81135c485836c04412

SHA512
33b1753d1a7ac0c1cefc12c6236fb1c074146778b179f8c5a8d84ccd0c5a19095aef021e9af5097df5046c5e9b80ed42950f642d8ee25f8fcf13f81d525a6076

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

Filesize
264KB

MD5
a0051fa6f5190c984a269d026a47e7b4

SHA1
380cbbddfcac3fb22bd78f60bf8445f1f1634b94

SHA256
7d739906ed3602a3617329cf9a8c314c4bf0cb898923e53137d6b25b2e3e4595

SHA512
4cc10e504d5351fae69e3a918a9fd4386e10f3e73723ad84989e2fe23ac32fb3e60bfd3a6e777e7bc17f448331393774e31570596ca270307f0d7a250e00d1e0

Download Submit
memory/280-6-0x0000000002990000-0x0000000002A10000-memory.dmp

Filesize
512KB

Download
memory/280-7-0x000000001B530000-0x000000001B812000-memory.dmp

Filesize
2.9MB

Download
memory/280-8-0x0000000002250000-0x0000000002258000-memory.dmp

Filesize
32KB

Download
memory/1544-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/1544-15-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/2556-0-0x000007FEF5E73000-0x000007FEF5E74000-memory.dmp

Filesize
4KB

Download
memory/2556-1-0x0000000000A50000-0x0000000000A98000-memory.dmp

Filesize
288KB

Download
memory/2556-18-0x000000001B170000-0x000000001B1F0000-memory.dmp

Filesize
512KB

Download
memory/2856-22-0x00000000001D0000-0x0000000000218000-memory.dmp

Filesize
288KB

Download
memory/2856-23-0x00000000005C0000-0x00000000005D8000-memory.dmp

Filesize
96KB

Download

Analysis

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