asyncrat | b5d2ecdbd6249989d48a10f8ec95b0d29ad36c5154c2c05bdb0bb25ed9bdfb7c

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
29-07-2024 17:47

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General

Target

5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Size

299KB
MD5

5697e9dc2fbe26d04f55957153efe44c
SHA1

dbeebefb57db333cdbd6a842ed3cc322d56eb356
SHA256

b5d2ecdbd6249989d48a10f8ec95b0d29ad36c5154c2c05bdb0bb25ed9bdfb7c
SHA512

7fd8792343e9871f8ffa5bcbdd527a4a7c2c2018cd08f4dc42be0a18f29c95e0dc9b544db88cac15e000c609f99c3a451c9505a1b1e60b198fd9ecd6d94db0c5
SSDEEP

6144:V6mqKT25znghEcv8/2CL7EHCUSCrb1rNdbu:ImqKYH8HCxM9+

Score

10^/10

asyncrat default discovery evasion rat trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

185.239.242.166:5536

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe

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-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2708 set thread context of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100

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 4 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	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.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
724	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3556	powershell.exe
3556	powershell.exe
2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3556	powershell.exe
Token: SeDebugPrivilege	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Token: SeDebugPrivilege	4664	RegSvcs.exe
Token: SeDebugPrivilege	4664	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 3556	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	96
PID 2708 wrote to memory of 3556	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	96
PID 2708 wrote to memory of 3556	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	96
PID 2708 wrote to memory of 724	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	98
PID 2708 wrote to memory of 724	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	98
PID 2708 wrote to memory of 724	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	98
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100
PID 2708 wrote to memory of 4664	2708	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	100

C:\Users\Admin\AppData\Local\Temp\5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe"
1⤵
- Modifies Windows Defender Real-time Protection settings
- Checks computer location settings
- Windows security modification
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3556
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vmxkurcZzTCbn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA67C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:724
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fj51ad3n.flr.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA67C.tmp

Filesize
1KB

MD5
3cceabf8914096d39b1318a40fac673d

SHA1
e860efc3e4b7d2ba96bedadffc7bfb1c1f55f273

SHA256
e1dee9e0126a95b013f186b3d4c6e81dbc4cc65e29f684f4828803913f95a652

SHA512
92995e89702ed7bd6ef87bcd0f1d6bd871d51caed58fca5a1520b7ee3348f35fe786918e3041df51684c20b42ce72d16d4bd6d5b7ac1c094054f877b6728291d

Download Submit
memory/2708-8-0x00000000059A0000-0x00000000059A8000-memory.dmp

Filesize
32KB

Download
memory/2708-9-0x0000000074F4E000-0x0000000074F4F000-memory.dmp

Filesize
4KB

Download
memory/2708-4-0x00000000059E0000-0x0000000005A72000-memory.dmp

Filesize
584KB

Download
memory/2708-5-0x0000000005950000-0x000000000595A000-memory.dmp

Filesize
40KB

Download
memory/2708-6-0x0000000005B70000-0x0000000005BC6000-memory.dmp

Filesize
344KB

Download
memory/2708-7-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/2708-2-0x0000000005860000-0x00000000058FC000-memory.dmp

Filesize
624KB

Download
memory/2708-3-0x0000000005EF0000-0x0000000006494000-memory.dmp

Filesize
5.6MB

Download
memory/2708-10-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/2708-11-0x0000000005EB0000-0x0000000005EE4000-memory.dmp

Filesize
208KB

Download
memory/2708-12-0x0000000005EE0000-0x0000000005EF4000-memory.dmp

Filesize
80KB

Download
memory/2708-68-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/2708-1-0x0000000000EA0000-0x0000000000EF2000-memory.dmp

Filesize
328KB

Download
memory/2708-0-0x0000000074F4E000-0x0000000074F4F000-memory.dmp

Filesize
4KB

Download
memory/3556-30-0x0000000005F40000-0x0000000006294000-memory.dmp

Filesize
3.3MB

Download
memory/3556-48-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-18-0x0000000005E60000-0x0000000005EC6000-memory.dmp

Filesize
408KB

Download
memory/3556-19-0x0000000005ED0000-0x0000000005F36000-memory.dmp

Filesize
408KB

Download
memory/3556-20-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-16-0x0000000005660000-0x0000000005C88000-memory.dmp

Filesize
6.2MB

Download
memory/3556-15-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-31-0x0000000006530000-0x000000000654E000-memory.dmp

Filesize
120KB

Download
memory/3556-32-0x00000000065D0000-0x000000000661C000-memory.dmp

Filesize
304KB

Download
memory/3556-33-0x0000000006B10000-0x0000000006B42000-memory.dmp

Filesize
200KB

Download
memory/3556-44-0x0000000007500000-0x000000000751E000-memory.dmp

Filesize
120KB

Download
memory/3556-34-0x00000000701A0000-0x00000000701EC000-memory.dmp

Filesize
304KB

Download
memory/3556-45-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-46-0x0000000007530000-0x00000000075D3000-memory.dmp

Filesize
652KB

Download
memory/3556-47-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-17-0x0000000005DC0000-0x0000000005DE2000-memory.dmp

Filesize
136KB

Download
memory/3556-50-0x0000000007860000-0x000000000787A000-memory.dmp

Filesize
104KB

Download
memory/3556-49-0x0000000007EB0000-0x000000000852A000-memory.dmp

Filesize
6.5MB

Download
memory/3556-51-0x00000000078D0000-0x00000000078DA000-memory.dmp

Filesize
40KB

Download
memory/3556-52-0x0000000007AE0000-0x0000000007B76000-memory.dmp

Filesize
600KB

Download
memory/3556-53-0x0000000007A60000-0x0000000007A71000-memory.dmp

Filesize
68KB

Download
memory/3556-54-0x0000000007A90000-0x0000000007A9E000-memory.dmp

Filesize
56KB

Download
memory/3556-55-0x0000000007AA0000-0x0000000007AB4000-memory.dmp

Filesize
80KB

Download
memory/3556-56-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

Filesize
104KB

Download
memory/3556-57-0x0000000007B80000-0x0000000007B88000-memory.dmp

Filesize
32KB

Download
memory/3556-60-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-14-0x0000000074F40000-0x00000000756F0000-memory.dmp

Filesize
7.7MB

Download
memory/3556-13-0x0000000002C10000-0x0000000002C46000-memory.dmp

Filesize
216KB

Download
memory/4664-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download