asyncrat | b5d2ecdbd6249989d48a10f8ec95b0d29ad36c5154c2c05bdb0bb25ed9bdfb7c

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

C2

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	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 2404 set thread context of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35

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
3060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2824	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe
Token: SeDebugPrivilege	2144	RegSvcs.exe
Token: SeDebugPrivilege	2144	RegSvcs.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2824	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	31
PID 2404 wrote to memory of 2824	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	31
PID 2404 wrote to memory of 2824	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	31
PID 2404 wrote to memory of 2824	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	31
PID 2404 wrote to memory of 3060	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	33
PID 2404 wrote to memory of 3060	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	33
PID 2404 wrote to memory of 3060	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	33
PID 2404 wrote to memory of 3060	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	33
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35
PID 2404 wrote to memory of 2144	2404	5697e9dc2fbe26d04f55957153efe44c_JaffaCakes118.exe	35

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
- Windows security modification
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2404
- 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:2824
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vmxkurcZzTCbn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD0E6.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3060
- 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:2144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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

C:\Users\Admin\AppData\Local\Temp\tmpD0E6.tmp

Filesize
1KB

MD5
59110cc5cacc5aa8e82e4999b8844007

SHA1
f033fc4b81fb45eab77939663247cbc0264d81f0

SHA256
00d52594fbff791ee30d0c82609e626935eb6915592e86d48862df90d5199a72

SHA512
45269b24f8e4ebcfb13f7776fbb1653a308ce874c77c730d6bbf3621ee296892987f69cbd5373c2eacc91fe6f4e38c176702f2e4ca8f52199d4b9295bd5a7a64

Download Submit
memory/2144-31-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2144-32-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2144-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2144-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2144-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2144-30-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2144-27-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2144-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2404-6-0x0000000000A20000-0x0000000000A54000-memory.dmp

Filesize
208KB

Download
memory/2404-4-0x0000000074CCE000-0x0000000074CCF000-memory.dmp

Filesize
4KB

Download
memory/2404-33-0x0000000074CC0000-0x00000000753AE000-memory.dmp

Filesize
6.9MB

Download
memory/2404-1-0x0000000000DB0000-0x0000000000E02000-memory.dmp

Filesize
328KB

Download
memory/2404-2-0x0000000074CC0000-0x00000000753AE000-memory.dmp

Filesize
6.9MB

Download
memory/2404-3-0x0000000000220000-0x0000000000228000-memory.dmp

Filesize
32KB

Download
memory/2404-5-0x0000000074CC0000-0x00000000753AE000-memory.dmp

Filesize
6.9MB

Download
memory/2404-7-0x00000000004C0000-0x00000000004D4000-memory.dmp

Filesize
80KB

Download
memory/2404-0-0x0000000074CCE000-0x0000000074CCF000-memory.dmp

Filesize
4KB

Download
memory/2824-10-0x000000006FB51000-0x000000006FB52000-memory.dmp

Filesize
4KB

Download
memory/2824-12-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-11-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-15-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-14-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download
memory/2824-13-0x000000006FB50000-0x00000000700FB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads