asyncrat | 7f92427f427dcc9c8746f252d895e938107e94d6432028d7d4beae5523b56c8e

General

Target

4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe
Size

36KB
MD5

4f35ac873a97230c69a50bc06fd750a9
SHA1

ade1e45a59fe0343cb7be26de680c80f7bab3519
SHA256

7f92427f427dcc9c8746f252d895e938107e94d6432028d7d4beae5523b56c8e
SHA512

64452c18ba544ad7c15d5cc9165c4886299cc64b72efa9f236b198c8f786ac9f1cfff53f5125896ad4d2dcd5039506f8406b4364fc693afddd547e1b80c5788f
SSDEEP

768:+yUXi87RgWVj4c0dGHl0QHyZLa2fed3dddddddw:+yUXi8tnj4rdI0QHIsd3dddddddw

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

justrandomhost.duckdns.org: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 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2352-4-0x00000000005A0000-0x00000000005B2000-memory.dmp	family_asyncrat
behavioral1/memory/2636-19-0x0000000000440000-0x0000000000452000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2636	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2800	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com
7	pastebin.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2744	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
1480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe
2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe
2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe
Token: SeDebugPrivilege	2636	svchost.exe
Token: SeDebugPrivilege	2636	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2264	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	32
PID 2352 wrote to memory of 2264	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	32
PID 2352 wrote to memory of 2264	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	32
PID 2352 wrote to memory of 2264	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	32
PID 2352 wrote to memory of 2800	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	33
PID 2352 wrote to memory of 2800	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	33
PID 2352 wrote to memory of 2800	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	33
PID 2352 wrote to memory of 2800	2352	4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe	33
PID 2264 wrote to memory of 1480	2264	cmd.exe	36
PID 2264 wrote to memory of 1480	2264	cmd.exe	36
PID 2264 wrote to memory of 1480	2264	cmd.exe	36
PID 2264 wrote to memory of 1480	2264	cmd.exe	36
PID 2800 wrote to memory of 2744	2800	cmd.exe	37
PID 2800 wrote to memory of 2744	2800	cmd.exe	37
PID 2800 wrote to memory of 2744	2800	cmd.exe	37
PID 2800 wrote to memory of 2744	2800	cmd.exe	37
PID 2800 wrote to memory of 2636	2800	cmd.exe	38
PID 2800 wrote to memory of 2636	2800	cmd.exe	38
PID 2800 wrote to memory of 2636	2800	cmd.exe	38
PID 2800 wrote to memory of 2636	2800	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4f35ac873a97230c69a50bc06fd750a9_JaffaCakes118.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2352
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:2264
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1480
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpEA4F.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2800
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2744
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    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

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpEA4F.tmp.bat

Filesize
151B

MD5
4479fe4249c3fec49fd8d920dffbd171

SHA1
cc443910a938c63f31702662bd5d0d25fc75e5a4

SHA256
b514c9734c17870ce31900f53fe2cf7a7b488d6c86b6f4051b9edf5cf1006022

SHA512
47d525b71822042248901ce842b59534435401b56720494bcd84cded287d10715740f65af78cafd27fac850efe953efe16ce0d74597c9c541fe112c7a1daa1d3

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

Filesize
36KB

MD5
4f35ac873a97230c69a50bc06fd750a9

SHA1
ade1e45a59fe0343cb7be26de680c80f7bab3519

SHA256
7f92427f427dcc9c8746f252d895e938107e94d6432028d7d4beae5523b56c8e

SHA512
64452c18ba544ad7c15d5cc9165c4886299cc64b72efa9f236b198c8f786ac9f1cfff53f5125896ad4d2dcd5039506f8406b4364fc693afddd547e1b80c5788f

Download Submit
memory/2352-0-0x00000000744BE000-0x00000000744BF000-memory.dmp

Filesize
4KB

Download
memory/2352-1-0x0000000010D70000-0x0000000010D80000-memory.dmp

Filesize
64KB

Download
memory/2352-2-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/2352-3-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/2352-4-0x00000000005A0000-0x00000000005B2000-memory.dmp

Filesize
72KB

Download
memory/2352-13-0x00000000744B0000-0x0000000074B9E000-memory.dmp

Filesize
6.9MB

Download
memory/2636-18-0x0000000010DB0000-0x0000000010DC0000-memory.dmp

Filesize
64KB

Download
memory/2636-19-0x0000000000440000-0x0000000000452000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads