asyncrat | 3f88c9843cb12cb83e1428bd4518a62f6e057904d065a1ff379f4173fc238d50

General

Target

5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe
Size

220KB
MD5

5b0eec2cad9696c56031231cd3aadfe7
SHA1

f89faf0532fcef570a12dc14c9ecec5cded37d1b
SHA256

3f88c9843cb12cb83e1428bd4518a62f6e057904d065a1ff379f4173fc238d50
SHA512

eb368a9a030120e89be4881ee28defe381135b5e9be42dbdbe858d9b97c7f359e0d7a692c457375378f020fe8e18cad98c70e2bd8c0cdb3fdfef22b7a51a17ff
SSDEEP

3072:tVUmiLbThQWh4gSPqMcFr1TIVBbF/WmzoaVaBvWRHLQiydGKzrulc0POiwLw9YG:knLbNsg6EzTI7J/poa0BeRQi9YC/POyZ

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

mr7bashbab.ddns.net:6606

mr7bashbab.ddns.net:7707

mr7bashbab.ddns.net:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
OBS.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/332-2-0x0000000000270000-0x0000000000282000-memory.dmp	family_asyncrat
behavioral1/memory/2800-18-0x0000000000430000-0x0000000000442000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2800	OBS.exe

Loads dropped DLL 1 IoCs

pid	Process
2272	cmd.exe

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
2664	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
2700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe
332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe
332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe
Token: SeDebugPrivilege	2800	OBS.exe
Token: SeDebugPrivilege	2800	OBS.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 332 wrote to memory of 2124	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	31
PID 332 wrote to memory of 2124	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	31
PID 332 wrote to memory of 2124	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	31
PID 332 wrote to memory of 2124	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	31
PID 332 wrote to memory of 2272	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	33
PID 332 wrote to memory of 2272	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	33
PID 332 wrote to memory of 2272	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	33
PID 332 wrote to memory of 2272	332	5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe	33
PID 2124 wrote to memory of 2700	2124	cmd.exe	35
PID 2124 wrote to memory of 2700	2124	cmd.exe	35
PID 2124 wrote to memory of 2700	2124	cmd.exe	35
PID 2124 wrote to memory of 2700	2124	cmd.exe	35
PID 2272 wrote to memory of 2664	2272	cmd.exe	36
PID 2272 wrote to memory of 2664	2272	cmd.exe	36
PID 2272 wrote to memory of 2664	2272	cmd.exe	36
PID 2272 wrote to memory of 2664	2272	cmd.exe	36
PID 2272 wrote to memory of 2800	2272	cmd.exe	37
PID 2272 wrote to memory of 2800	2272	cmd.exe	37
PID 2272 wrote to memory of 2800	2272	cmd.exe	37
PID 2272 wrote to memory of 2800	2272	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5b0eec2cad9696c56031231cd3aadfe7_JaffaCakes118.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "OBS" /tr '"C:\Users\Admin\AppData\Roaming\OBS.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2124
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "OBS" /tr '"C:\Users\Admin\AppData\Roaming\OBS.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2700
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE994.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2272
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2664
- - C:\Users\Admin\AppData\Roaming\OBS.exe
    "C:\Users\Admin\AppData\Roaming\OBS.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2800

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE994.tmp.bat

Filesize
147B

MD5
4dbe7f24c35051bec159c977fd8e5f41

SHA1
823bb32bbc7e81dbc5390b2b85014d0ac599c446

SHA256
4d57f96958ec8e073badab2b7141565e604dd135a5c12e83c79bb5fa7cac4c77

SHA512
b58454d22c990e09c994dc845ba0b16875fe3c01a5f9184063840ca7ff02d05a3a2c643aca37af5645037c9ef35b2287589bebf2721318efbe693d060480efb1

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

Filesize
220KB

MD5
5b0eec2cad9696c56031231cd3aadfe7

SHA1
f89faf0532fcef570a12dc14c9ecec5cded37d1b

SHA256
3f88c9843cb12cb83e1428bd4518a62f6e057904d065a1ff379f4173fc238d50

SHA512
eb368a9a030120e89be4881ee28defe381135b5e9be42dbdbe858d9b97c7f359e0d7a692c457375378f020fe8e18cad98c70e2bd8c0cdb3fdfef22b7a51a17ff

Download Submit
memory/332-0-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

Filesize
4KB

Download
memory/332-1-0x0000000000150000-0x000000000015E000-memory.dmp

Filesize
56KB

Download
memory/332-2-0x0000000000270000-0x0000000000282000-memory.dmp

Filesize
72KB

Download
memory/332-3-0x0000000074BC0000-0x00000000752AE000-memory.dmp

Filesize
6.9MB

Download
memory/332-13-0x0000000074BC0000-0x00000000752AE000-memory.dmp

Filesize
6.9MB

Download
memory/2800-17-0x0000000001310000-0x000000000131E000-memory.dmp

Filesize
56KB

Download
memory/2800-18-0x0000000000430000-0x0000000000442000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads