asyncrat | 890da560405def4dd27880ef5b614505716acfd3c3a34abc5b596d072d91d425

General

Target
acsmoney.in.net.exe
Size 45KB
Sample260305-smwcdset7v
SHA256 890da560405def4dd27880ef5b614505716acfd3c3a34abc5b596d072d91d425
MD5 3f7228185e44867a1c9e44a5df0ea76e
SHA1 cbdf4ab2f9d31095d50b3cff837b43b323f0a131
SHA512 3b282f53db6e4f90018d61138546b159ae0e991d0b5fe594ef9ebf2253093e0f9f784323c53c77ce96dc97c60275c145cc84b561dfd6fd7e90eadf77da2b3596
SSDEEP 768:5ugnNTjgkH7F7WUHF9pmo2q7T0eqrfePIXzjbbgX3BJ5/lIHAUfcfKE72BDZ/x:5ugnNTcIb2AVMnX3bkXRH/IAUEKsYd/x
TLSH
T1E3232B003BE9812BF2BE5F78ACF26105467AF1632603D64E1CC451DB5613BC69A52AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

acsmoney.in.net defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

acsmoney.in.net

C2

acsmoney.in.net:80
acsmoney.in.net:8080
acsmoney.in.net:443
acsmoney.in.net:8443

Mutex

VasmjWCPqaxc

Attributes

delay
3
install
true
install_file
mko2.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000800000002436e-9.dat	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-1-5-21-721190819-434563495-2007910846-1000\Control Panel\International\Geo\Nation	acsmoney.in.net.exe

Executes dropped EXE 2 IoCs

pid	Process
5476	mko2.exe
5648	mko2.exe

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

System Information Discovery
T1082

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mko2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mko2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	acsmoney.in.net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2360	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
4872	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe
4744	acsmoney.in.net.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4744	acsmoney.in.net.exe
Token: SeDebugPrivilege	5476	mko2.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 5208	4744	acsmoney.in.net.exe	92
PID 4744 wrote to memory of 5036	4744	acsmoney.in.net.exe	94
PID 5208 wrote to memory of 4872	5208	cmd.exe	96
PID 5036 wrote to memory of 2360	5036	cmd.exe	97
PID 5036 wrote to memory of 5648	5036	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\acsmoney.in.net.exe
"C:\Users\Admin\AppData\Local\Temp\acsmoney.in.net.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "mko2" /tr '"C:\Users\Admin\AppData\Roaming\mko2.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5208
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "mko2" /tr '"C:\Users\Admin\AppData\Roaming\mko2.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4872
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp701A.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5036
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2360
- - C:\Users\Admin\AppData\Roaming\mko2.exe
    "C:\Users\Admin\AppData\Roaming\mko2.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5648

C:\Users\Admin\AppData\Roaming\mko2.exe
"C:\Users\Admin\AppData\Roaming\mko2.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5476

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

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Downloads

tmp701A.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp701A.tmp.bat
Size 148B
SHA256 d1726594d6f2aaa84edd63a8b33de21e6de2c84c97507c4ed9c35f0541a9db7b
MD5 b36d24480c161d4a9a49d2f523cafdec
SHA1 00715d5490bc6acca3b2642f1e9e321afe0e1cd9
SHA512 d3f4a460a34f5d8835e4fcf520fb76648608e15991fbd3d588f3aa7ab6fde6e1e99e01e2827b68e029c1bc3bf0fbaf6506bb44e6042342d92bd7b0d998edfec8
TLSH
T1F8C02B9351C6EB5E2809241306FAD4DC9272AC5D3F40FB00C704404D7680448F4DD341
MD5 SHA1 SHA512 TLSH

Submit Download

mko2.exe

Path C:\Users\Admin\AppData\Roaming\mko2.exe
Size 45KB
SHA256 890da560405def4dd27880ef5b614505716acfd3c3a34abc5b596d072d91d425
MD5 3f7228185e44867a1c9e44a5df0ea76e
SHA1 cbdf4ab2f9d31095d50b3cff837b43b323f0a131
SHA512 3b282f53db6e4f90018d61138546b159ae0e991d0b5fe594ef9ebf2253093e0f9f784323c53c77ce96dc97c60275c145cc84b561dfd6fd7e90eadf77da2b3596
SSDEEP 768:5ugnNTjgkH7F7WUHF9pmo2q7T0eqrfePIXzjbbgX3BJ5/lIHAUfcfKE72BDZ/x:5ugnNTcIb2AVMnX3bkXRH/IAUEKsYd/x
TLSH
T1E3232B003BE9812BF2BE5F78ACF26105467AF1632603D64E1CC451DB5613BC69A52AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4744-0-0x0000000000E70000-0x0000000000E82000-memory.dmp

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memory/4744-1-0x00000000030F0000-0x0000000003100000-memory.dmp

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memory/4744-2-0x0000000005850000-0x00000000058EC000-memory.dmp

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memory/4744-7-0x0000000003260000-0x0000000003266000-memory.dmp

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memory/5476-13-0x0000000000DA0000-0x0000000000DA6000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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