asyncrat | 7c5ae8b4cfb6512953bac7d92b95a88569c252c4a7118c85f00b6443c7ffe133

General

Target
casinoalo789.exe
Size 79KB
Sample260827-mc71jsfr61
SHA256 7c5ae8b4cfb6512953bac7d92b95a88569c252c4a7118c85f00b6443c7ffe133
MD5 58328f5d6063cd058110c4b4ef5f769b
SHA1 1063bff90bb0a43b2529965e1dadf40ac40fc291
SHA512 ad012a44e5b5024b3a3e275dbe286e59f08b01dd365bd4bf2e007f84b04bcd846e3a081dcf8c804b6e2af72a8323b4824bd6f6e62138b7464b5d3e2a6534e9f4
SSDEEP 1536:muuA1TFcJ2sSJEuobBDS0c+os9hdnFwevI9C0:muusTFcJ2sSmuobBW2PxeJC0
TLSH
T1EA837D003FE8C12BE27E5F785DF19645067BF5632A02C64A1DC45A8F5A23FC5D9026F9
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

casinoalo789.com:6606
casinoalo789.com:7707
casinoalo789.com:8808
casinoalo789.com:80
casinoalo789.com:443

Mutex

XUSSNk8WwB22

Attributes

delay
10
install
true
install_file
casinoalo789.com.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 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00070000000245b7-9.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-1-5-21-1074038928-2032447174-945360078-1000\Control Panel\International\Geo\Nation	casinoalo789.exe

Executes dropped EXE 2 IoCs

pid	Process
4916	casinoalo789.com.exe
1264	casinoalo789.com.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
1996	cmd.exe
1280	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	cmd.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	casinoalo789.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	casinoalo789.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	casinoalo789.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4276	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
2924	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe
1844	casinoalo789.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1844	casinoalo789.exe
Token: SeDebugPrivilege	4916	casinoalo789.com.exe
Token: SeDebugPrivilege	4916	casinoalo789.com.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1844 wrote to memory of 1996	1844	casinoalo789.exe	91
PID 1844 wrote to memory of 1280	1844	casinoalo789.exe	93
PID 1280 wrote to memory of 4276	1280	cmd.exe	95
PID 1996 wrote to memory of 2924	1996	cmd.exe	96
PID 1280 wrote to memory of 1264	1280	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\casinoalo789.exe
"C:\Users\Admin\AppData\Local\Temp\casinoalo789.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "casinoalo789.com" /tr '"C:\Users\Admin\AppData\Roaming\casinoalo789.com.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "casinoalo789.com" /tr '"C:\Users\Admin\AppData\Roaming\casinoalo789.com.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2924
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDB28.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4276
- - C:\Users\Admin\AppData\Roaming\casinoalo789.com.exe
    "C:\Users\Admin\AppData\Roaming\casinoalo789.com.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1264

C:\Users\Admin\AppData\Roaming\casinoalo789.com.exe
"C:\Users\Admin\AppData\Roaming\casinoalo789.com.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4916

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

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Downloads

tmpDB28.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpDB28.tmp.bat
Size 160B
SHA256 a3b558a39278c6171d04465e5cc04bb14181364355296a2871d0ea49da532bb8
MD5 6c186b97ba06531fc66b7d920b3f591e
SHA1 ceb5e353a0c0f79a33e4e7b651e2f3b5a2dee02c
SHA512 bf280b6699ab685c4481a52548f20a1ac6d1aac332fd4afc5fe020daf8fe873d7f677093e2dbfdbb510e0a85ba829ed4ad4ce74842b28e8eb0081b66e3556f21
TLSH
T169C08C4391C6AE5E2805581306FAD48DA1727C9A3E48AB508748800D5680459E4A9385
MD5 SHA1 SHA512 TLSH

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casinoalo789.com.exe

Path C:\Users\Admin\AppData\Roaming\casinoalo789.com.exe
Size 79KB
SHA256 7c5ae8b4cfb6512953bac7d92b95a88569c252c4a7118c85f00b6443c7ffe133
MD5 58328f5d6063cd058110c4b4ef5f769b
SHA1 1063bff90bb0a43b2529965e1dadf40ac40fc291
SHA512 ad012a44e5b5024b3a3e275dbe286e59f08b01dd365bd4bf2e007f84b04bcd846e3a081dcf8c804b6e2af72a8323b4824bd6f6e62138b7464b5d3e2a6534e9f4
SSDEEP 1536:muuA1TFcJ2sSJEuobBDS0c+os9hdnFwevI9C0:muusTFcJ2sSmuobBW2PxeJC0
TLSH
T1EA837D003FE8C12BE27E5F785DF19645067BF5632A02C64A1DC45A8F5A23FC5D9026F9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1844-0-0x0000000000210000-0x000000000022A000-memory.dmp

Download

memory/1844-1-0x0000000004B80000-0x0000000004B90000-memory.dmp

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memory/1844-2-0x0000000004C00000-0x0000000004C66000-memory.dmp

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memory/1844-3-0x0000000005050000-0x00000000050EC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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