asyncrat | 7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4

General

Target

7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
Size

48KB
MD5

39fb8a8a40c829ac3a4fd5cd6ea473b7
SHA1

5930195043f8a59566d778d15acb31d3c3e5c3a8
SHA256

7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4
SHA512

e6d3074a3f2c8d474818d1611d36990b4ab9467f5ffe983ef7572414870c2802e2f353aa02579044c7b51e482bac23424bed9767b8fbb0c41ed16dd328b2beaa
SSDEEP

1536:euWk5T1gi29npmgpzmyb+M/oLnOA5UtGhdIR:euWET1gi29pmgpzmyb+/Ld6tI+R

Score

10^/10

asyncrat rust rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Rust

C2

extra-hack.ddns.net:2550

extra-hack.ddns.net:2551

extra-hack.ddns.net:2552

extra-hack.ddns.net:2553

extra-hack.ddns.net:2554

extra-hack.ddns.net:2555

extra-hack.ddns.net:2556

extra-hack.ddns.net:2557

extra-hack.ddns.net:2558

extra-hack.ddns.net:2559

extra-hack.ddns.net:2560

extra-hack.ddns.net:2561

extra-hack.ddns.net:2562

extra-hack.ddns.net:2563

extra-hack.ddns.net:2564

extra-hack.ddns.net:2565

extra-hack.ddns.net:2566

extra-hack.ddns.net:2567

extra-hack.ddns.net:2568

extra-hack.ddns.net:2569

Mutex

j4hy8gsf6w53x4

Attributes

delay
3
install
true
install_file
Realtek HD Audio Universal Service.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 6 IoCs

rat

resource	yara_rule
behavioral1/memory/1916-0-0x00000000012F0000-0x0000000001302000-memory.dmp	asyncrat
behavioral1/files/0x00070000000120bd-14.dat	asyncrat
behavioral1/files/0x00070000000120bd-15.dat	asyncrat
behavioral1/files/0x00070000000120bd-16.dat	asyncrat
behavioral1/memory/2532-17-0x0000000000CB0000-0x0000000000CC2000-memory.dmp	asyncrat
behavioral1/memory/2532-19-0x00000000022A0000-0x00000000022E0000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2532	Realtek HD Audio Universal Service.exe

Loads dropped DLL 1 IoCs

pid	Process
2652	cmd.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2976	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2560	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
Token: SeDebugPrivilege	2532	Realtek HD Audio Universal Service.exe
Token: SeDebugPrivilege	2532	Realtek HD Audio Universal Service.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2640	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	29
PID 1916 wrote to memory of 2640	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	29
PID 1916 wrote to memory of 2640	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	29
PID 1916 wrote to memory of 2640	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	29
PID 1916 wrote to memory of 2652	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	31
PID 1916 wrote to memory of 2652	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	31
PID 1916 wrote to memory of 2652	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	31
PID 1916 wrote to memory of 2652	1916	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	31
PID 2652 wrote to memory of 2560	2652	cmd.exe	34
PID 2652 wrote to memory of 2560	2652	cmd.exe	34
PID 2652 wrote to memory of 2560	2652	cmd.exe	34
PID 2652 wrote to memory of 2560	2652	cmd.exe	34
PID 2640 wrote to memory of 2976	2640	cmd.exe	33
PID 2640 wrote to memory of 2976	2640	cmd.exe	33
PID 2640 wrote to memory of 2976	2640	cmd.exe	33
PID 2640 wrote to memory of 2976	2640	cmd.exe	33
PID 2652 wrote to memory of 2532	2652	cmd.exe	35
PID 2652 wrote to memory of 2532	2652	cmd.exe	35
PID 2652 wrote to memory of 2532	2652	cmd.exe	35
PID 2652 wrote to memory of 2532	2652	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
"C:\Users\Admin\AppData\Local\Temp\7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Realtek HD Audio Universal Service" /tr '"C:\Users\Admin\AppData\Roaming\Realtek HD Audio Universal Service.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Realtek HD Audio Universal Service" /tr '"C:\Users\Admin\AppData\Roaming\Realtek HD Audio Universal Service.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2976
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp9BF1.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2652
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2560
- - C:\Users\Admin\AppData\Roaming\Realtek HD Audio Universal Service.exe
    "C:\Users\Admin\AppData\Roaming\Realtek HD Audio Universal Service.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab2A2E.tmp

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar43E8.tmp

Filesize
163KB

MD5
9441737383d21192400eca82fda910ec

SHA1
725e0d606a4fc9ba44aa8ffde65bed15e65367e4

SHA256
bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

SHA512
7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9BF1.tmp.bat

Filesize
178B

MD5
df77c2b98dd2be4ad90e2d6a84fc2d41

SHA1
201711110c2f5a70d414e47324b5fed829f3eedf

SHA256
d288ddbd881526481e245b200bcdf024bde08810d7833bed1d6b9a44d8ed81f3

SHA512
8038079d5be51132cd977fc8a1e19e839fd5a2c8b3727e423793e950a984a0fb6a799138230d9705e2cff958881690598bcd2d49ee285c663baa9e605ae25785

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9BF1.tmp.bat

Filesize
178B

MD5
df77c2b98dd2be4ad90e2d6a84fc2d41

SHA1
201711110c2f5a70d414e47324b5fed829f3eedf

SHA256
d288ddbd881526481e245b200bcdf024bde08810d7833bed1d6b9a44d8ed81f3

SHA512
8038079d5be51132cd977fc8a1e19e839fd5a2c8b3727e423793e950a984a0fb6a799138230d9705e2cff958881690598bcd2d49ee285c663baa9e605ae25785

Download Submit
C:\Users\Admin\AppData\Roaming\Realtek HD Audio Universal Service.exe

Filesize
48KB

MD5
39fb8a8a40c829ac3a4fd5cd6ea473b7

SHA1
5930195043f8a59566d778d15acb31d3c3e5c3a8

SHA256
7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4

SHA512
e6d3074a3f2c8d474818d1611d36990b4ab9467f5ffe983ef7572414870c2802e2f353aa02579044c7b51e482bac23424bed9767b8fbb0c41ed16dd328b2beaa

Download Submit
C:\Users\Admin\AppData\Roaming\Realtek HD Audio Universal Service.exe

Filesize
48KB

MD5
39fb8a8a40c829ac3a4fd5cd6ea473b7

SHA1
5930195043f8a59566d778d15acb31d3c3e5c3a8

SHA256
7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4

SHA512
e6d3074a3f2c8d474818d1611d36990b4ab9467f5ffe983ef7572414870c2802e2f353aa02579044c7b51e482bac23424bed9767b8fbb0c41ed16dd328b2beaa

Download Submit
\Users\Admin\AppData\Roaming\Realtek HD Audio Universal Service.exe

Filesize
48KB

MD5
39fb8a8a40c829ac3a4fd5cd6ea473b7

SHA1
5930195043f8a59566d778d15acb31d3c3e5c3a8

SHA256
7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4

SHA512
e6d3074a3f2c8d474818d1611d36990b4ab9467f5ffe983ef7572414870c2802e2f353aa02579044c7b51e482bac23424bed9767b8fbb0c41ed16dd328b2beaa

Download Submit
memory/1916-13-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/1916-3-0x0000000004B40000-0x0000000004B80000-memory.dmp

Filesize
256KB

Download
memory/1916-0-0x00000000012F0000-0x0000000001302000-memory.dmp

Filesize
72KB

Download
memory/1916-2-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/1916-1-0x0000000074950000-0x000000007503E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-17-0x0000000000CB0000-0x0000000000CC2000-memory.dmp

Filesize
72KB

Download
memory/2532-18-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-19-0x00000000022A0000-0x00000000022E0000-memory.dmp

Filesize
256KB

Download
memory/2532-20-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2532-21-0x00000000022A0000-0x00000000022E0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads