asyncrat | d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705

General

Target
d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
Size 45KB
Sample260919-n565dszfkb
SHA256 d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705
MD5 3af0b1f2ae955e69b85225dc3ff63adc
SHA1 44d0446cb8ba45f37aece3f43609764bdd5bfe71
SHA512 77076f4123b0ab57d41ce8d95c357409c215fa1c6c5b6ae9d23b75bb69837c20c2f4414c5b5b9b72b77ae5b6af39d0e502d54268997bb8fdcdc5c5904b4bb21e
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9tO5QSCBzHSNjPI7zjbOgX3idveCAg0QEAb28NNKiBM:0uPrpT/qY2cO59ESK73bxXSYCLEuVNKf
TLSH
T1B8233B003BE9812BF2BE4F78A9F22145467AF6637603E54D1CC411DB5613FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

viet69no1.net:80
viet69no1.net:22
viet69no1.net:8080
viet69no1.net:8880
viet69no1.net:2052
viet69no1.net:2082
viet69no1.net:2086
viet69no1.net:2095
viet69no1.net:443
viet69no1.net:2053
viet69no1.net:2083
viet69no1.net:2087
viet69no1.net:2096
viet69no1.net:8443
www.viet69no1.net:80
www.viet69no1.net:22
www.viet69no1.net:8080
www.viet69no1.net:8880
www.viet69no1.net:2052
www.viet69no1.net:2082
www.viet69no1.net:2086
www.viet69no1.net:2095
www.viet69no1.net:443
www.viet69no1.net:2053
www.viet69no1.net:2083
www.viet69no1.net:2087
www.viet69no1.net:2096
www.viet69no1.net:8443
hack.viet69no1.net:80
hack.viet69no1.net:22
hack.viet69no1.net:8080
hack.viet69no1.net:8880
hack.viet69no1.net:2052
hack.viet69no1.net:2082
hack.viet69no1.net:2086
hack.viet69no1.net:2095
hack.viet69no1.net:443
hack.viet69no1.net:2053
hack.viet69no1.net:2083
hack.viet69no1.net:2087
hack.viet69no1.net:2096
hack.viet69no1.net:8443
ryuk.viet69no1.net:80
ryuk.viet69no1.net:22
ryuk.viet69no1.net:8080
ryuk.viet69no1.net:8880
ryuk.viet69no1.net:2052
ryuk.viet69no1.net:2082
ryuk.viet69no1.net:2086
ryuk.viet69no1.net:2095
ryuk.viet69no1.net:443
ryuk.viet69no1.net:2053
ryuk.viet69no1.net:2083
ryuk.viet69no1.net:2087
ryuk.viet69no1.net:2096
ryuk.viet69no1.net:8443
malware.viet69no1.net:80
malware.viet69no1.net:22
malware.viet69no1.net:8080
malware.viet69no1.net:8880
malware.viet69no1.net:2052
malware.viet69no1.net:2082
malware.viet69no1.net:2086
malware.viet69no1.net:2095
malware.viet69no1.net:443
malware.viet69no1.net:2053
malware.viet69no1.net:2083
malware.viet69no1.net:2087
malware.viet69no1.net:2096
malware.viet69no1.net:8443

Mutex

BQSn8dIavB9I

Attributes

delay
0
install
true
install_file
q1qieyx.exe
install_folder
%AppData%

aes.plain

Signatures

Family: 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
behavioral1/files/0x0002000000022c4b-8.dat	family_asyncrat
behavioral1/memory/4712-10-0x0000000005450000-0x0000000005460000-memory.dmp	family_asyncrat
behavioral1/memory/4712-13-0x0000000005450000-0x0000000005460000-memory.dmp	family_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-1-5-21-1846164713-4096795028-774071693-1000\Control Panel\International\Geo\Nation	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe

Executes dropped EXE 2 IoCs

pid	Process
4712	q1qieyx.exe
4948	q1qieyx.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3052	cmd.exe
4460	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	q1qieyx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	q1qieyx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3944	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3476	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
Token: SeDebugPrivilege	4712	q1qieyx.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4012 wrote to memory of 4460	4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe	88
PID 4012 wrote to memory of 3052	4012	d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe	90
PID 3052 wrote to memory of 3944	3052	cmd.exe	92
PID 4460 wrote to memory of 3476	4460	cmd.exe	93
PID 3052 wrote to memory of 4948	3052	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe
"C:\Users\Admin\AppData\Local\Temp\d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4012
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "q1qieyx" /tr '"C:\Users\Admin\AppData\Roaming\q1qieyx.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4460
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "q1qieyx" /tr '"C:\Users\Admin\AppData\Roaming\q1qieyx.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3476
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9323.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3944
- - C:\Users\Admin\AppData\Roaming\q1qieyx.exe
    "C:\Users\Admin\AppData\Roaming\q1qieyx.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4948

C:\Users\Admin\AppData\Roaming\q1qieyx.exe
"C:\Users\Admin\AppData\Roaming\q1qieyx.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4712

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp9323.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9323.tmp.bat
Size 151B
SHA256 b6c9832cd0d91601904eeec744a812efb6e066b810d861d037a78cc06c0dc9b2
MD5 713753de2247cbff3702cc4707aea586
SHA1 e335c9883d45c537cba1f5ac6703c720a5be678c
SHA512 4a38b74a05a1878b4e992cc08e5abe62aad970d81ed93e8f01b4cd052b6271e3def71d9d117fd952c7a742e6b45f62d3ae410fba5e4c7c58948b0b5ad1ad78ce
TLSH
T13EC02B8251C6EA4F6809181302FAD48DD273AC1D3F40BF90C708480D138085CF4D9341
MD5 SHA1 SHA512 TLSH

Submit Download

q1qieyx.exe

Path C:\Users\Admin\AppData\Roaming\q1qieyx.exe
Size 45KB
SHA256 d3dfba1b5ac40d20b104277d40d1fda1e71fc0c4ea7b26d7bdd9166783a79705
MD5 3af0b1f2ae955e69b85225dc3ff63adc
SHA1 44d0446cb8ba45f37aece3f43609764bdd5bfe71
SHA512 77076f4123b0ab57d41ce8d95c357409c215fa1c6c5b6ae9d23b75bb69837c20c2f4414c5b5b9b72b77ae5b6af39d0e502d54268997bb8fdcdc5c5904b4bb21e
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q9tO5QSCBzHSNjPI7zjbOgX3idveCAg0QEAb28NNKiBM:0uPrpT/qY2cO59ESK73bxXSYCLEuVNKf
TLSH
T1B8233B003BE9812BF2BE4F78A9F22145467AF6637603E54D1CC411DB5613FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4012-0-0x00000000006A0000-0x00000000006B2000-memory.dmp

Download

memory/4012-1-0x00000000051D0000-0x00000000051E0000-memory.dmp

Download

memory/4012-2-0x00000000050A0000-0x000000000513C000-memory.dmp

Download

memory/4712-10-0x0000000005450000-0x0000000005460000-memory.dmp

Download

memory/4712-13-0x0000000005450000-0x0000000005460000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads