asyncrat | def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e

General

Target

def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe
Size

74KB
MD5

d8f74bec52438dae8cc3155600cf325a
SHA1

e637ac5ad63b81c694eb5ef01ec5d05ef1be1b55
SHA256

def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e
SHA512

5beaf90dd1cd9798aa17b9b0eb290ba222212e3d242a185b4277013affced8c7ace966e99ed675d4a4a0d21bb72e03dc6d9439eabfd1eed4e0d56a467047ac9d
SSDEEP

1536:uUoe0cxFVTuCGbPMVOe9VdQuDI6H1bf/TLtJuQzc+LVclN:uUo3cxFVaBbPMVOe9VdQsH1bfrLSQXBY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

45.132.107.72:4449

45.132.107.72:8090

Mutex

xixnfmyfcst

Attributes

delay
1
install
true
install_file
chrome.exe
install_folder
%Temp%

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/0x0030000000016de1-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2588	chrome.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

pid	Process
2616	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
1720	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe
2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe
2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe
2588	chrome.exe
2588	chrome.exe
2588	chrome.exe
2588	chrome.exe
2588	chrome.exe
2588	chrome.exe
2588	chrome.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe
Token: SeDebugPrivilege	2588	chrome.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2588	chrome.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2700 wrote to memory of 2720	2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe	30
PID 2700 wrote to memory of 2720	2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe	30
PID 2700 wrote to memory of 2720	2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe	30
PID 2700 wrote to memory of 2904	2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe	31
PID 2700 wrote to memory of 2904	2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe	31
PID 2700 wrote to memory of 2904	2700	def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe	31
PID 2904 wrote to memory of 2616	2904	cmd.exe	34
PID 2904 wrote to memory of 2616	2904	cmd.exe	34
PID 2904 wrote to memory of 2616	2904	cmd.exe	34
PID 2720 wrote to memory of 1720	2720	cmd.exe	35
PID 2720 wrote to memory of 1720	2720	cmd.exe	35
PID 2720 wrote to memory of 1720	2720	cmd.exe	35
PID 2904 wrote to memory of 2588	2904	cmd.exe	36
PID 2904 wrote to memory of 2588	2904	cmd.exe	36
PID 2904 wrote to memory of 2588	2904	cmd.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\def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe
"C:\Users\Admin\AppData\Local\Temp\def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"C:\Users\Admin\AppData\Local\Temp\chrome.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "chrome" /tr '"C:\Users\Admin\AppData\Local\Temp\chrome.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1720
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp870B.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2616
- - C:\Users\Admin\AppData\Local\Temp\chrome.exe
    "C:\Users\Admin\AppData\Local\Temp\chrome.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2588

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\chrome.exe

Filesize
74KB

MD5
d8f74bec52438dae8cc3155600cf325a

SHA1
e637ac5ad63b81c694eb5ef01ec5d05ef1be1b55

SHA256
def85febed594d32e94220514cda316ee17116032f1531a84fbe1c74311f2a0e

SHA512
5beaf90dd1cd9798aa17b9b0eb290ba222212e3d242a185b4277013affced8c7ace966e99ed675d4a4a0d21bb72e03dc6d9439eabfd1eed4e0d56a467047ac9d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp870B.tmp.bat

Filesize
153B

MD5
c2095e423efbe8e6e57c5145dc18da87

SHA1
224d53139c4c00e71ffd5cf011acf4ab7b0b8390

SHA256
7e562aa06cb45997ba722267bee217f400a299a5bffce0a8b3a231eb12d4bd64

SHA512
365e9aa405962e1fd8a729dcbe573235505ae042824a42a08344aa44fd065d9518a9d04666faade2cf55dfe76eb0e08e626c3cb64a88f1fa17e4c3dafb6c217c

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2588-18-0x0000000000D60000-0x0000000000D78000-memory.dmp

Filesize
96KB

Download
memory/2700-0-0x000007FEF5AB3000-0x000007FEF5AB4000-memory.dmp

Filesize
4KB

Download
memory/2700-1-0x0000000000D90000-0x0000000000DA8000-memory.dmp

Filesize
96KB

Download
memory/2700-3-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/2700-4-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download
memory/2700-14-0x000007FEF5AB0000-0x000007FEF649C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads