asyncrat | 7cea3459fe006e787947d8eedc2770285061bc5e9a0ca0ffc7213a96756341fb

Analysis

max time kernel
120s
max time network
146s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
25-05-2024 13:52

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General

Target

regasms.exe
Size

63KB
MD5

9cded6e0c0b625370bb17884b7611955
SHA1

d55f1c17b783b372af8c8e2207386e4f3f886cd5
SHA256

7cea3459fe006e787947d8eedc2770285061bc5e9a0ca0ffc7213a96756341fb
SHA512

e83a3c4c8e0097f2ed20f8bff4526be646a2b3f574fc6f2876ce581208ccc0576124110cb4b4a5025a3ab1486c6d5a8e18ffe81cd8bc42c8792d54b7088639ab
SSDEEP

1536:62wukvF1ak9gcKu5UYFQL2SNy5b/XPrdBHHCrmTGxx:62dkvF1ak9Ku5UYFSjy5b/Dd8EKx

Score

10^/10

asyncrat lnkk rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

LNKK

leetboy.dynuddns.net:1338

Mutex

AsyncMutex_6h2caasdas2133sOkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

regasms.exe

pid process

1728 regasms.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasms.exe

description pid process

Token: SeDebugPrivilege 1728 regasms.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

regasms.exe

pid process

1728 regasms.exe

pid	process
1728	regasms.exe

description	pid	process
Token: SeDebugPrivilege	1728	regasms.exe

pid	process
1728	regasms.exe

C:\Users\Admin\AppData\Local\Temp\regasms.exe
"C:\Users\Admin\AppData\Local\Temp\regasms.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar3F29.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
memory/1728-0-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/1728-1-0x0000000000B00000-0x0000000000B16000-memory.dmp

Filesize
88KB

Download
memory/1728-2-0x0000000074500000-0x0000000074BEE000-memory.dmp

Filesize
6.9MB

Download
memory/1728-40-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/1728-41-0x0000000074500000-0x0000000074BEE000-memory.dmp

Filesize
6.9MB

Download