asyncrat | 95b609ceb06e3e98fa3f2d380bb9cfff4816610f416523aa684b68743a8c5f79

General

Target

JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe
Size

3.0MB
MD5

bd699ddc84aab6948f952d2f08dbad12
SHA1

b983ff066083f62d4b8ee8832256c1e745eca1ff
SHA256

95b609ceb06e3e98fa3f2d380bb9cfff4816610f416523aa684b68743a8c5f79
SHA512

aed7e1966fc9e61bbf56e90a78ea31e23500e33317e5b7d8bd8c7fe66473f5084ab70976947e879e76da4560535290007c27dd74813dd92f84befe45b6223e93
SSDEEP

98304:LGrj7Ltr7xuKP4Fi3xQNCrZdOpPuTPWncwlQ4:YvJV74EWNCrZd4mrWncW

Score

10^/10

asyncrat asd discovery evasion rat themida trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

asd

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

Mutex

asd

Attributes

delay
3
install
true
install_file
virus.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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2848-29-0x0000000001280000-0x0000000001AAA000-memory.dmp	themida
behavioral1/memory/2848-30-0x0000000001280000-0x0000000001AAA000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.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 3 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	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2636	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe
2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe
2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2584	2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe	30
PID 2848 wrote to memory of 2584	2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe	30
PID 2848 wrote to memory of 2584	2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe	30
PID 2848 wrote to memory of 2584	2848	JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe	30
PID 2584 wrote to memory of 2636	2584	cmd.exe	32
PID 2584 wrote to memory of 2636	2584	cmd.exe	32
PID 2584 wrote to memory of 2636	2584	cmd.exe	32
PID 2584 wrote to memory of 2636	2584	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bd699ddc84aab6948f952d2f08dbad12.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "virus" /tr '"C:\Users\Admin\AppData\Roaming\virus.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2584
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "virus" /tr '"C:\Users\Admin\AppData\Roaming\virus.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2636

Network

MITRE ATT&CK Enterprise v15

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

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2848-0-0x0000000001280000-0x0000000001AAA000-memory.dmp

Filesize
8.2MB

Download
memory/2848-1-0x00000000753C4000-0x00000000753C5000-memory.dmp

Filesize
4KB

Download
memory/2848-3-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-7-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-6-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-5-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-4-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-2-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-9-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-24-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-23-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-22-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-21-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-20-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-19-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-18-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-17-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-16-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-15-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-14-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-13-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-12-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-11-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-10-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-8-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-28-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download
memory/2848-29-0x0000000001280000-0x0000000001AAA000-memory.dmp

Filesize
8.2MB

Download
memory/2848-30-0x0000000001280000-0x0000000001AAA000-memory.dmp

Filesize
8.2MB

Download
memory/2848-31-0x0000000001280000-0x0000000001AAA000-memory.dmp

Filesize
8.2MB

Download
memory/2848-32-0x00000000753C4000-0x00000000753C5000-memory.dmp

Filesize
4KB

Download
memory/2848-34-0x00000000753B0000-0x00000000754C0000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads