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 3 IoCs

rat

resource	yara_rule
behavioral2/memory/768-1-0x0000000000150000-0x0000000000162000-memory.dmp	asyncrat
behavioral2/files/0x000f0000000230cc-14.dat	asyncrat
behavioral2/files/0x000f0000000230cc-15.dat	asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Control Panel\International\Geo\Nation	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
372	Realtek HD Audio Universal Service.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
2292	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2776	timeout.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
Token: SeDebugPrivilege	372	Realtek HD Audio Universal Service.exe
Token: SeDebugPrivilege	372	Realtek HD Audio Universal Service.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 768 wrote to memory of 472	768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	98
PID 768 wrote to memory of 472	768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	98
PID 768 wrote to memory of 472	768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	98
PID 768 wrote to memory of 2076	768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	101
PID 768 wrote to memory of 2076	768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	101
PID 768 wrote to memory of 2076	768	7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe	101
PID 472 wrote to memory of 2292	472	cmd.exe	100
PID 472 wrote to memory of 2292	472	cmd.exe	100
PID 472 wrote to memory of 2292	472	cmd.exe	100
PID 2076 wrote to memory of 2776	2076	cmd.exe	103
PID 2076 wrote to memory of 2776	2076	cmd.exe	103
PID 2076 wrote to memory of 2776	2076	cmd.exe	103
PID 2076 wrote to memory of 372	2076	cmd.exe	104
PID 2076 wrote to memory of 372	2076	cmd.exe	104
PID 2076 wrote to memory of 372	2076	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe
"C:\Users\Admin\AppData\Local\Temp\7e1974ea77e2416b2ac75656d1e24da59de0af97815a9e337e4a7cc58f6339a4_JC.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:768
- 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:472
- - 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:2292
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp87A5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2776
- - 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:372

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp87A5.tmp.bat

Filesize
178B

MD5
9bb1a513c2e794e67a7e4868a01ebcab

SHA1
4cef45de720261d41bf6011d7b2e62a2b9193c7e

SHA256
7d3f9db20c9e8595dce0ea425d775ad4d6c2b90658b8f00a595422562340c09f

SHA512
44c9a14ce2cea8e0cb585a860457e62d07c4db7995428f242dbca31cc4a7fcf391074e0720a80437dbb93832366a49ab767d68821bbaf557ea02b80c1729242e

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
memory/372-20-0x0000000006170000-0x0000000006714000-memory.dmp

Filesize
5.6MB

Download
memory/372-19-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/372-18-0x0000000075100000-0x00000000758B0000-memory.dmp

Filesize
7.7MB

Download
memory/372-17-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/372-16-0x0000000075100000-0x00000000758B0000-memory.dmp

Filesize
7.7MB

Download
memory/768-4-0x0000000004B00000-0x0000000004B10000-memory.dmp

Filesize
64KB

Download
memory/768-12-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/768-6-0x00000000050A0000-0x000000000513C000-memory.dmp

Filesize
624KB

Download
memory/768-5-0x0000000004C10000-0x0000000004C76000-memory.dmp

Filesize
408KB

Download
memory/768-0-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/768-3-0x0000000004B00000-0x0000000004B10000-memory.dmp

Filesize
64KB

Download
memory/768-2-0x00000000751A0000-0x0000000075950000-memory.dmp

Filesize
7.7MB

Download
memory/768-1-0x0000000000150000-0x0000000000162000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads