asyncrat | cbb4a905efad9fff8c83e66f166d31875e3c87afa431210f9da5b3b0ed0aeaba

General

Target

d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
Size

583KB
MD5

d9e83a990c7bd74e6e595db61ef7722e
SHA1

5adf69d2566baa09176cbed0ea5b251f4364ade8
SHA256

cbb4a905efad9fff8c83e66f166d31875e3c87afa431210f9da5b3b0ed0aeaba
SHA512

1032fe4f94e556add89d009fac6294df79976d769a65fd93f5815b8bb62bb02ef4df93976fae08b86e11a88e4f037f0acde2df8bd1e374ae6ea7fb88f5d2d5cb
SSDEEP

12288:FrAe2iNeHK7zYjuVnWyBk5jQbNWsF3SGOL8B/wn:FrX1bJRsxGbon

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:2245

127.0.0.1:2256

fresh01.ddns.net:2245

fresh01.ddns.net:2256

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2524 set thread context of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32

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	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.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
2708	schtasks.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2708	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	30
PID 2524 wrote to memory of 2708	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	30
PID 2524 wrote to memory of 2708	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	30
PID 2524 wrote to memory of 2708	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	30
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32
PID 2524 wrote to memory of 2704	2524	d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RDSfONspQLLpB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD0A7.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2708
- C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\d9e83a990c7bd74e6e595db61ef7722e_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2704

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD0A7.tmp

Filesize
1KB

MD5
6f1682898b6fc7a3a5a838d1d330613e

SHA1
e33f586e3f10641b91826daa0832acf957a03b4b

SHA256
3cf8a12c29c94ffe87a72e9647b885907b94967b6a144137d9e641e9ca5ae18b

SHA512
8ed925158fac317764798431c3fb9477b99f39a371bf5b743415234dfb974e2e773176a828539664b8b357c068507ed0f47d00a81fb7c0d70b5183035338d57d

Download Submit
memory/2524-0-0x00000000742DE000-0x00000000742DF000-memory.dmp

Filesize
4KB

Download
memory/2524-1-0x0000000001070000-0x0000000001108000-memory.dmp

Filesize
608KB

Download
memory/2524-2-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2524-3-0x0000000000410000-0x0000000000426000-memory.dmp

Filesize
88KB

Download
memory/2524-4-0x00000000742DE000-0x00000000742DF000-memory.dmp

Filesize
4KB

Download
memory/2524-5-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2524-6-0x0000000004CB0000-0x0000000004D32000-memory.dmp

Filesize
520KB

Download
memory/2524-7-0x0000000000980000-0x0000000000992000-memory.dmp

Filesize
72KB

Download
memory/2524-29-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2704-27-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2704-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2704-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2704-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-19-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2704-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2704-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2704-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2704-28-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2704-30-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2704-31-0x00000000742D0000-0x00000000749BE000-memory.dmp

Filesize
6.9MB

Download
memory/2704-32-0x00000000742D0000-0x00000000749BE000-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