asyncrat | 6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e

Analysis

max time kernel
147s
max time network
117s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
05-08-2024 01:26

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General

Target

6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
Size

204KB
MD5

d6c3e22a2d260e9124481f4a82278da5
SHA1

151167da902148943ba8554fab4331d82ec8b150
SHA256

6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e
SHA512

11f92b994434c43c0a2393e1347b4b96ad00be36ade16b16860b1fed65d76a7a5d9ef35019092ea37db3f841b66bf5b8ca1187ba84cb63d22d95057439d7b967
SSDEEP

3072:60U2cxq3O6PMV9iFTH1bRGAgxy1QhWwfBtOEp7ybMj/0vU7yZED+CDgbB+Y:xDO6PMVQVbjgxkoW6mEpmbMjgU7yZf8

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Mutex

server.underground-cheat.xyz

Attributes

delay
1
install
true
install_file
WinUpdate.exe
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
behavioral1/files/0x0009000000016c76-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
3064	WinUpdate.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1416	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
1988	schtasks.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe
3064	WinUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
Token: SeDebugPrivilege	3064	WinUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3064	WinUpdate.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 1652	1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	28
PID 1368 wrote to memory of 1652	1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	28
PID 1368 wrote to memory of 1652	1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	28
PID 1368 wrote to memory of 2128	1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	29
PID 1368 wrote to memory of 2128	1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	29
PID 1368 wrote to memory of 2128	1368	6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe	29
PID 2128 wrote to memory of 1416	2128	cmd.exe	32
PID 2128 wrote to memory of 1416	2128	cmd.exe	32
PID 2128 wrote to memory of 1416	2128	cmd.exe	32
PID 1652 wrote to memory of 1988	1652	cmd.exe	33
PID 1652 wrote to memory of 1988	1652	cmd.exe	33
PID 1652 wrote to memory of 1988	1652	cmd.exe	33
PID 2128 wrote to memory of 3064	2128	cmd.exe	34
PID 2128 wrote to memory of 3064	2128	cmd.exe	34
PID 2128 wrote to memory of 3064	2128	cmd.exe	34

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\6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe
"C:\Users\Admin\AppData\Local\Temp\6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1988
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp8E7A.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1416
- - C:\Users\Admin\AppData\Roaming\WinUpdate.exe
    "C:\Users\Admin\AppData\Roaming\WinUpdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8E7A.tmp.bat

Filesize
153B

MD5
1ca73828b9d3a997ae4d0e62b7f1f413

SHA1
83b476053b1ef4a9e994a1665521c8f701943eae

SHA256
2ae61b82b5eb4ae00886fb98bb5f058731cd093508e4201d64904474f68b3520

SHA512
e5839b1faea3820a7ef5e8588d6ad70c65e846f0bb63e835ddd031620a0fea23180ec8d1c45c9f57f6e698c04480625c0cd0d618f826e2f4aa5ad386f94c5f62

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\WinUpdate.exe

Filesize
204KB

MD5
d6c3e22a2d260e9124481f4a82278da5

SHA1
151167da902148943ba8554fab4331d82ec8b150

SHA256
6475637fff05177a05bf6e84301c09492f21766ea3ba0068f3f70c4d0d886a9e

SHA512
11f92b994434c43c0a2393e1347b4b96ad00be36ade16b16860b1fed65d76a7a5d9ef35019092ea37db3f841b66bf5b8ca1187ba84cb63d22d95057439d7b967

Download Submit
memory/1368-0-0x000007FEF56E3000-0x000007FEF56E4000-memory.dmp

Filesize
4KB

Download
memory/1368-1-0x0000000000F30000-0x0000000000F68000-memory.dmp

Filesize
224KB

Download
memory/1368-3-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

Filesize
9.9MB

Download
memory/1368-12-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

Filesize
9.9MB

Download
memory/1368-13-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp

Filesize
9.9MB

Download
memory/3064-18-0x0000000000C00000-0x0000000000C38000-memory.dmp

Filesize
224KB

Download