asyncrat | aa8308e986d53702e8674ec11140bf6244deafd679135bb5c1b6dbe20475a125

General

Target

a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe
Size

47KB
MD5

a750d5f19524e4431550930c4e8a0a95
SHA1

4e20317001a8da032d85e12ee9a41fa570485daf
SHA256

aa8308e986d53702e8674ec11140bf6244deafd679135bb5c1b6dbe20475a125
SHA512

a1bd14d2575423cce68d224dc00e359841521443eb0dff8516f442cbb38221105b7de1816b995469d554f5574a1188d50df210593e6f4128ca5d04e64c0d369f
SSDEEP

768:iuyKFTMIGZ8btAWUumy6mo2q88CAPSy3PIE4q12T8sBTVe0bNlpmZJqtOlD2KsfE:iuyKFTMtkY2w6E4q12TZRRbDewMlDLsc

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

20.36.20.111:1604

Mutex

AsyncMutex_6SI8OkPnk

Attributes

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

aes.plain

Signatures

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/0x000c000000012246-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2612	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2608	cmd.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 6 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	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe
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	svchost.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2716	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
2056	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe
2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe
2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe
Token: SeDebugPrivilege	2612	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2712	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	30
PID 2848 wrote to memory of 2712	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	30
PID 2848 wrote to memory of 2712	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	30
PID 2848 wrote to memory of 2712	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	30
PID 2848 wrote to memory of 2608	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	32
PID 2848 wrote to memory of 2608	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	32
PID 2848 wrote to memory of 2608	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	32
PID 2848 wrote to memory of 2608	2848	a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe	32
PID 2608 wrote to memory of 2716	2608	cmd.exe	35
PID 2608 wrote to memory of 2716	2608	cmd.exe	35
PID 2608 wrote to memory of 2716	2608	cmd.exe	35
PID 2608 wrote to memory of 2716	2608	cmd.exe	35
PID 2712 wrote to memory of 2056	2712	cmd.exe	34
PID 2712 wrote to memory of 2056	2712	cmd.exe	34
PID 2712 wrote to memory of 2056	2712	cmd.exe	34
PID 2712 wrote to memory of 2056	2712	cmd.exe	34
PID 2608 wrote to memory of 2612	2608	cmd.exe	36
PID 2608 wrote to memory of 2612	2608	cmd.exe	36
PID 2608 wrote to memory of 2612	2608	cmd.exe	36
PID 2608 wrote to memory of 2612	2608	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a750d5f19524e4431550930c4e8a0a95_JaffaCakes118.exe"
1⤵
- 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 "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2056
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp7262.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2608
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2716
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2612

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

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\tmp7262.tmp.bat

Filesize
151B

MD5
27c3e9f54068eef3963e945a17eb1dfa

SHA1
2f8f5feff8ef97dcef2402f45b561bdc5f71a44a

SHA256
519b71066f409a597af582d4fb2a4c37ea6cf79b0079d66d7ddbca8f61bbe7c8

SHA512
f29ad6f91810d9ba65520e9fd5d1ef6dbdddd08f824fdb148699f7332b0e55c2014e4cca5100e623f6eb385eeda33085b43fe880871ced61720d40b461c3dd66

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe

Filesize
47KB

MD5
a750d5f19524e4431550930c4e8a0a95

SHA1
4e20317001a8da032d85e12ee9a41fa570485daf

SHA256
aa8308e986d53702e8674ec11140bf6244deafd679135bb5c1b6dbe20475a125

SHA512
a1bd14d2575423cce68d224dc00e359841521443eb0dff8516f442cbb38221105b7de1816b995469d554f5574a1188d50df210593e6f4128ca5d04e64c0d369f

Download Submit
memory/2612-16-0x0000000000020000-0x0000000000032000-memory.dmp

Filesize
72KB

Download
memory/2848-0-0x00000000743EE000-0x00000000743EF000-memory.dmp

Filesize
4KB

Download
memory/2848-1-0x00000000002B0000-0x00000000002C2000-memory.dmp

Filesize
72KB

Download
memory/2848-2-0x00000000743E0000-0x0000000074ACE000-memory.dmp

Filesize
6.9MB

Download
memory/2848-12-0x00000000743E0000-0x0000000074ACE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads