asyncrat | 9dbb9ba5a01a654a21d899aef6594ee5fc0b4d0ac68a3c97ec52ef6a8959f27d

General

Target

430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe
Size

562KB
MD5

430e7cce721d74347a9a7ac87a9a9ec1
SHA1

b03b248c279d9e05988c0cd87aa405e9ae55f0e2
SHA256

9dbb9ba5a01a654a21d899aef6594ee5fc0b4d0ac68a3c97ec52ef6a8959f27d
SHA512

69ad4bd2e3ac61d596ae4ab65abe41128bf8a74cd7366f5f6584d1bccdb4e6ef6ae95dc846917a1fb5fc2fcb680ebcd677b85444e5b7f0c663381885edf5fc0b
SSDEEP

12288:X63MOeq3A7EEqsGh3S8CbZJscjIcKvKJNY8lYfIeXQhzMhi1:X21e6yqsGNdCbZeZo8AhzM41

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 1 IoCs

rat

resource	yara_rule
behavioral1/memory/264-2-0x00000000003E0000-0x0000000000408000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2724	OBS.exe

Loads dropped DLL 1 IoCs

pid	Process
2892	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
2748	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
2300	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe
264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe
264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe
Token: SeDebugPrivilege	2724	OBS.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 264 wrote to memory of 2360	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	30
PID 264 wrote to memory of 2360	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	30
PID 264 wrote to memory of 2360	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	30
PID 264 wrote to memory of 2360	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	30
PID 264 wrote to memory of 2892	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	32
PID 264 wrote to memory of 2892	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	32
PID 264 wrote to memory of 2892	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	32
PID 264 wrote to memory of 2892	264	430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe	32
PID 2360 wrote to memory of 2300	2360	cmd.exe	34
PID 2360 wrote to memory of 2300	2360	cmd.exe	34
PID 2360 wrote to memory of 2300	2360	cmd.exe	34
PID 2360 wrote to memory of 2300	2360	cmd.exe	34
PID 2892 wrote to memory of 2748	2892	cmd.exe	35
PID 2892 wrote to memory of 2748	2892	cmd.exe	35
PID 2892 wrote to memory of 2748	2892	cmd.exe	35
PID 2892 wrote to memory of 2748	2892	cmd.exe	35
PID 2892 wrote to memory of 2724	2892	cmd.exe	37
PID 2892 wrote to memory of 2724	2892	cmd.exe	37
PID 2892 wrote to memory of 2724	2892	cmd.exe	37
PID 2892 wrote to memory of 2724	2892	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\430e7cce721d74347a9a7ac87a9a9ec1_JaffaCakes118.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:264
- 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:2360
- - 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:2300
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC9F3.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2748
- - C:\Users\Admin\AppData\Roaming\OBS.exe
    "C:\Users\Admin\AppData\Roaming\OBS.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2724

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\tmpC9F3.tmp.bat

Filesize
147B

MD5
ecb4f31251261710e9c6287c2419990c

SHA1
9c17fe0341fec4f8b3fc58992dcfe9679241358d

SHA256
b6370371aa5e4a729b370b33588c7b3429b240db72977b2f65e2e7be3ced57da

SHA512
7d2a86bce65db3a4413fdce3e4088b3552a7ec087776e7c17c94c9989b105d51686dec0653c489d9b1940e3a05e734cd849f8f784b14f7d34128fe9ab501f90d

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

Filesize
562KB

MD5
430e7cce721d74347a9a7ac87a9a9ec1

SHA1
b03b248c279d9e05988c0cd87aa405e9ae55f0e2

SHA256
9dbb9ba5a01a654a21d899aef6594ee5fc0b4d0ac68a3c97ec52ef6a8959f27d

SHA512
69ad4bd2e3ac61d596ae4ab65abe41128bf8a74cd7366f5f6584d1bccdb4e6ef6ae95dc846917a1fb5fc2fcb680ebcd677b85444e5b7f0c663381885edf5fc0b

Download Submit
memory/264-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/264-1-0x0000000001110000-0x0000000001118000-memory.dmp

Filesize
32KB

Download
memory/264-2-0x00000000003E0000-0x0000000000408000-memory.dmp

Filesize
160KB

Download
memory/264-3-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download
memory/264-13-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-17-0x00000000013E0000-0x00000000013E8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads