asyncrat | 4640e247dbd962ee4f1a72779a2690c6fe947ae010af955039802e90be240bd0

General

Target

JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe
Size

790KB
MD5

039be8dcab701779e699c21fa790e8e0
SHA1

fc2bb44430052941f998a4a469b719f851a600d1
SHA256

4640e247dbd962ee4f1a72779a2690c6fe947ae010af955039802e90be240bd0
SHA512

b4afe7fa5437a46280b88cff35e8bb12dbe9221dc807a268fed01c1524303f1649166657eabfbd882f21486b12e9014dfd6ae626b52c2a480920a3553d13970f
SSDEEP

12288:FVsXbghN8QYXJSWU4xhUQewPvdqp+q5VAgBwP3tNNVtl5w:FObwWtJZU6hUOFqpPAgBgtNNVfe

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

194.5.97.212:1199

194.5.98.70:1199

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
Asyncrat family
asyncrat

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.exe	PowerShell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.exe	PowerShell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33

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_039be8dcab701779e699c21fa790e8e0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PowerShell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2408	PowerShell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	PowerShell.exe
Token: SeDebugPrivilege	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2408	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	30
PID 2156 wrote to memory of 2408	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	30
PID 2156 wrote to memory of 2408	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	30
PID 2156 wrote to memory of 2408	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	30
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33
PID 2156 wrote to memory of 548	2156	JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe	33

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\PowerShell.exe
  "PowerShell" copy-item 'C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.exe'
  2⤵
  - Drops startup file
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2408
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_039be8dcab701779e699c21fa790e8e0.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/548-41-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/548-45-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/548-42-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/548-43-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/548-49-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/548-51-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/548-44-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/548-47-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2156-31-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-23-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-13-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/2156-14-0x0000000074970000-0x000000007505E000-memory.dmp

Filesize
6.9MB

Download
memory/2156-15-0x00000000006C0000-0x00000000006DC000-memory.dmp

Filesize
112KB

Download
memory/2156-25-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-39-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-37-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-35-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-33-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-0-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/2156-29-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-27-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-52-0x0000000074970000-0x000000007505E000-memory.dmp

Filesize
6.9MB

Download
memory/2156-21-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-19-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-17-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-16-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/2156-40-0x0000000000B00000-0x0000000000B01000-memory.dmp

Filesize
4KB

Download
memory/2156-1-0x00000000013D0000-0x000000000149C000-memory.dmp

Filesize
816KB

Download
memory/2156-2-0x0000000074970000-0x000000007505E000-memory.dmp

Filesize
6.9MB

Download
memory/2408-9-0x00000000702D0000-0x000000007087B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-10-0x00000000702D0000-0x000000007087B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-6-0x00000000702D0000-0x000000007087B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-5-0x00000000702D1000-0x00000000702D2000-memory.dmp

Filesize
4KB

Download
memory/2408-8-0x00000000702D0000-0x000000007087B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-7-0x00000000702D0000-0x000000007087B000-memory.dmp

Filesize
5.7MB

Download
memory/2408-12-0x00000000702D0000-0x000000007087B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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