asyncrat | 48c368d7fdacb97f86acb10aee2115276ad56c7e8b470875f641cfdf0303a5fa

General

Target

c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe
Size

1.9MB
MD5

171da24c24a495819291b45e99f2cb0e
SHA1

6483d9c80da93eea0e84516e371c91336eaef681
SHA256

48c368d7fdacb97f86acb10aee2115276ad56c7e8b470875f641cfdf0303a5fa
SHA512

33779da0ecea8bfe19b7ec610b6297aed5e58e41ab367e54994d23a02d8ddb15d184a9535b4c20a0291f72252a60a60d8d4c8811ab37c0f5c84b85ec48961365
SSDEEP

49152:qbIkVpX0sZ2XrYKSGsWm8JCdybPsaDGlI1f+ROJEnJoi36HNqbeqxq:xNqbJxq

Score

10^/10

asyncrat game rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Game

C2

84.54.50.51:8848

Mutex

DcRatMutex_qwqdanchun

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1764-110-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1764-112-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1764-114-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1764-115-0x0000000004B80000-0x0000000004BC0000-memory.dmp	asyncrat

Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

printui.exeprintui.exe

pid process

1844 printui.exe
1660 printui.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

pid	process
1844	printui.exe
1660	printui.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe

description	pid	process	target process
PID 2016 set thread context of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1764 RegSvcs.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe

pid process

2016 c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe

description	pid	process
Token: SeDebugPrivilege	1764	RegSvcs.exe

pid	process
2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe

description	pid	process	target process
PID 2016 wrote to memory of 1360	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	cmd.exe
PID 2016 wrote to memory of 1360	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	cmd.exe
PID 2016 wrote to memory of 1360	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	cmd.exe
PID 2016 wrote to memory of 1360	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	cmd.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe
PID 2016 wrote to memory of 1764	2016	c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe
"C:\Users\Admin\AppData\Local\Temp\c90ba430608e000e7b270f5b5157111ee4760fce3269084b5f2b46efd48cf577.exe"
1⤵
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2016

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Windows \System32\ex.bat""
2⤵
PID:1360

C:\Windows \System32\printui.exe
"C:\Windows \System32\printui.exe"
3⤵
- Executes dropped EXE
PID:1844

C:\Windows \System32\printui.exe
"C:\Windows \System32\printui.exe"
3⤵
- Executes dropped EXE
PID:1660

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1764

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
342B

MD5
87be0284864aba5478c5f62d93c021fd

SHA1
edf7166b2f43cb858a0d23a2450e49cd6eb4a634

SHA256
f86cd5c17fa397c36116ba4481436040472a2b5e10865e3a3ed909c2b625a8a5

SHA512
627dbf4c01d6d315f8c6eae03e0a460aa80853f5d6b8a7e6a5f29e317dd1be90de9518d0c88040650d0f86caf0a91e60dce4cc9a6cf0211b62fd2d54d5e50aac

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabAAE0.tmp
Filesize
61KB

MD5
fc4666cbca561e864e7fdf883a9e6661

SHA1
2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

SHA256
10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

SHA512
c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

Download Submit
C:\Windows \System32\ex.bat
Filesize
49B

MD5
544314fad7b74a93139a263de3a250d8

SHA1
79e2b93d4f847f61ccd4831df1dcd3d2a1b4ef0a

SHA256
b74d0dc9c867a70c050b2e23758b197c613c588a6403f7410fe87b30f37eb436

SHA512
458bb62f3ce779a963925b7beaba78c025c87ca801b84315680fb99ea23e6bdba12564ae7015baeda7eca14757a7c4bf290dd369735faa8f42d3b54cbb4b6fa0

Download Submit
C:\Windows \System32\ex.bat
Filesize
49B

MD5
544314fad7b74a93139a263de3a250d8

SHA1
79e2b93d4f847f61ccd4831df1dcd3d2a1b4ef0a

SHA256
b74d0dc9c867a70c050b2e23758b197c613c588a6403f7410fe87b30f37eb436

SHA512
458bb62f3ce779a963925b7beaba78c025c87ca801b84315680fb99ea23e6bdba12564ae7015baeda7eca14757a7c4bf290dd369735faa8f42d3b54cbb4b6fa0

Download Submit
C:\Windows \System32\printui.exe
Filesize
62KB

MD5
2fc3530f3e05667f8240fc77f7486e7e

SHA1
c52cc219886f29e5076ced98d6483e28fc5cc3e0

SHA256
ac75af591c08442ea453eb92f6344e930585d912894e9323db922bcd9edf4cd1

SHA512
ef78de6a114885b55806323f09d8bc24609966d29a31c2a5ae6ad93d1f0d584d29418ba76ca2f235ed30ad8ae2c91f552c15487c559e0411e978d397c82f7046

Download Submit
C:\Windows \System32\printui.exe
Filesize
62KB

MD5
2fc3530f3e05667f8240fc77f7486e7e

SHA1
c52cc219886f29e5076ced98d6483e28fc5cc3e0

SHA256
ac75af591c08442ea453eb92f6344e930585d912894e9323db922bcd9edf4cd1

SHA512
ef78de6a114885b55806323f09d8bc24609966d29a31c2a5ae6ad93d1f0d584d29418ba76ca2f235ed30ad8ae2c91f552c15487c559e0411e978d397c82f7046

Download Submit
C:\Windows \System32\printui.exe
Filesize
62KB

MD5
2fc3530f3e05667f8240fc77f7486e7e

SHA1
c52cc219886f29e5076ced98d6483e28fc5cc3e0

SHA256
ac75af591c08442ea453eb92f6344e930585d912894e9323db922bcd9edf4cd1

SHA512
ef78de6a114885b55806323f09d8bc24609966d29a31c2a5ae6ad93d1f0d584d29418ba76ca2f235ed30ad8ae2c91f552c15487c559e0411e978d397c82f7046

Download Submit
memory/1764-110-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1764-112-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1764-114-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1764-115-0x0000000004B80000-0x0000000004BC0000-memory.dmp

Filesize
256KB

Download
memory/1764-134-0x0000000004B80000-0x0000000004BC0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads