asyncrat | 60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb

General

Target
60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
Size 45KB
Sample260817-vdaqfavdnf
SHA256 60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb
MD5 e950a9a7b7ab14ea20b7d58383881c8a
SHA1 80fcc12ba0bdec245e1eccae16c5fc36d82a155f
SHA512 97d477d8598be9767377abc0a1c26e472b037d55be895f50ba20ab679f239e4c68180ea97fc645f35a65650336177382b59ad3057dd082696f32811205335c5a
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVuoCa/ld3APIXzjbfgX3F65GANcZ/00BDZkx:suJdpTPdI23E/T3lX3boX1STcZ/0Cdkx
TLSH
T17A2319003BE8817BF2BE4F78ADF26105867AF2677603D6491CC451DB5623BC29A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

ads.zorvec.name:80
ads.zorvec.name:22
ads.zorvec.name:8080
ads.zorvec.name:8880
ads.zorvec.name:2052
ads.zorvec.name:2082
ads.zorvec.name:2086
ads.zorvec.name:2095
ads.zorvec.name:443
ads.zorvec.name:2053
ads.zorvec.name:2083
ads.zorvec.name:2087
ads.zorvec.name:2096
ads.zorvec.name:8443
www.ads.zorvec.name:80
www.ads.zorvec.name:22
www.ads.zorvec.name:8080
www.ads.zorvec.name:8880
www.ads.zorvec.name:2052
www.ads.zorvec.name:2082
www.ads.zorvec.name:2086
www.ads.zorvec.name:2095
www.ads.zorvec.name:443
www.ads.zorvec.name:2053
www.ads.zorvec.name:2083
www.ads.zorvec.name:2087
www.ads.zorvec.name:2096
www.ads.zorvec.name:8443
conti.ads.zorvec.name:80
conti.ads.zorvec.name:22
conti.ads.zorvec.name:8080
conti.ads.zorvec.name:8880
conti.ads.zorvec.name:2052
conti.ads.zorvec.name:2082
conti.ads.zorvec.name:2086
conti.ads.zorvec.name:2095
conti.ads.zorvec.name:443
conti.ads.zorvec.name:2053
conti.ads.zorvec.name:2083
conti.ads.zorvec.name:2087
conti.ads.zorvec.name:2096
conti.ads.zorvec.name:8443
hacker.ads.zorvec.name:80
hacker.ads.zorvec.name:22
hacker.ads.zorvec.name:8080
hacker.ads.zorvec.name:8880
hacker.ads.zorvec.name:2052
hacker.ads.zorvec.name:2082
hacker.ads.zorvec.name:2086
hacker.ads.zorvec.name:2095
hacker.ads.zorvec.name:443
hacker.ads.zorvec.name:2053
hacker.ads.zorvec.name:2083
hacker.ads.zorvec.name:2087
hacker.ads.zorvec.name:2096
hacker.ads.zorvec.name:8443

Mutex

At33J3lvahrA

Attributes

delay
0
install
true
install_file
mws3smgt.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 2 IoCs

rat

resource	yara_rule
behavioral1/files/0x0008000000024621-8.dat	family_asyncrat
behavioral1/memory/3848-10-0x0000000004C10000-0x0000000004C20000-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-1-5-21-2937465464-4167303362-2236413517-1000\Control Panel\International\Geo\Nation	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe

Executes dropped EXE 2 IoCs

pid	Process
3848	mws3smgt.exe
3716	mws3smgt.exe

Outbound SSH connection to public host 2 TTPs 4 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc	pid	Process
SSH destination	11	172.67.144.58:22	3848	mws3smgt.exe
SSH destination	32	104.21.28.44:22	3848	mws3smgt.exe
SSH destination	83	104.21.28.44:22	3848	mws3smgt.exe
SSH destination	88	172.67.144.58:22	3848	mws3smgt.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
2068	cmd.exe
1784	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	mws3smgt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mws3smgt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
836	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
2920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
Token: SeDebugPrivilege	3848	mws3smgt.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 2068	4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe	84
PID 4148 wrote to memory of 1784	4148	60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe	86
PID 2068 wrote to memory of 2920	2068	cmd.exe	88
PID 1784 wrote to memory of 836	1784	cmd.exe	89
PID 1784 wrote to memory of 3716	1784	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe
"C:\Users\Admin\AppData\Local\Temp\60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "mws3smgt" /tr '"C:\Users\Admin\AppData\Roaming\mws3smgt.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "mws3smgt" /tr '"C:\Users\Admin\AppData\Roaming\mws3smgt.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5697.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1784
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:836
- - C:\Users\Admin\AppData\Roaming\mws3smgt.exe
    "C:\Users\Admin\AppData\Roaming\mws3smgt.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3716

C:\Users\Admin\AppData\Roaming\mws3smgt.exe
"C:\Users\Admin\AppData\Roaming\mws3smgt.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3848

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

Network Service Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

1

T1572

Exfiltration

Impact

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Downloads

tmp5697.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5697.tmp.bat
Size 152B
SHA256 398013a0ad3e96d0f051615b85bf888486c543d45945a8759db151babac3360b
MD5 68f2eb67c0ba8cdd59769bc7901a4886
SHA1 689f608ad6738b5ca8b1eabdbb9057ab4e54bb05
SHA512 7887ba3bef3e009aaaf0aad3de775261a1b8731af63399a3239c1d77a9aa197f76cfd25627e6e8eabcbd908e68f3a6015fbb7b7083141bd43f69a2d5b2879c11
TLSH
T188C02B5391C5FE4F2805141303FADA8DA2B26C6E3F44FB50C308845F138048CF4D9341
MD5 SHA1 SHA512 TLSH

Submit Download

mws3smgt.exe

Path C:\Users\Admin\AppData\Roaming\mws3smgt.exe
Size 45KB
SHA256 60fbb090fa12d75da4a0a0e241b0192acf5d2c32946019023e3093f695fbdfcb
MD5 e950a9a7b7ab14ea20b7d58383881c8a
SHA1 80fcc12ba0bdec245e1eccae16c5fc36d82a155f
SHA512 97d477d8598be9767377abc0a1c26e472b037d55be895f50ba20ab679f239e4c68180ea97fc645f35a65650336177382b59ad3057dd082696f32811205335c5a
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVuoCa/ld3APIXzjbfgX3F65GANcZ/00BDZkx:suJdpTPdI23E/T3lX3boX1STcZ/0Cdkx
TLSH
T17A2319003BE8817BF2BE4F78ADF26105867AF2677603D6491CC451DB5623BC29A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3848-10-0x0000000004C10000-0x0000000004C20000-memory.dmp

Download

memory/3848-13-0x0000000004C10000-0x0000000004C20000-memory.dmp

Download

memory/4148-0-0x00000000005A0000-0x00000000005B2000-memory.dmp

Download

memory/4148-1-0x00000000029F0000-0x0000000002A00000-memory.dmp

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memory/4148-2-0x0000000004FE0000-0x000000000507C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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