asyncrat | 722dbfc5c333cdc63d078de5097c88acaee7512c37f45ce2cd5829f651aea5f2

General

Target

df759db973efd54d3d5b8b3ddf35d623.exe
Size

121KB
MD5

df759db973efd54d3d5b8b3ddf35d623
SHA1

df59c69ab3ced3f1047eafce082043c5d0e2b551
SHA256

722dbfc5c333cdc63d078de5097c88acaee7512c37f45ce2cd5829f651aea5f2
SHA512

56920f82347ece78c961adb762342417a546f26dde3bf38d8e59081ac6fe94f30b529eb08019c7d579ea5186374020710808efef8a8deb8aad5a183bcb6615e6

Score

10^/10

asyncrat rat suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

147.189.171.186:1337

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
O3pcOHIsp8UIns8G3yPeO591MZISl4RN
anti_detection
false
autorun
true
bdos
false
delay
Default
host
147.189.171.186
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
1337
version
0.5.7B

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
C:\Windows\serverstart.exe	asyncrat
C:\Windows\serverstart.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Discord.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Discord.exe	asyncrat

Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

serverstart.exeDiscord.exe

pid process

2588 serverstart.exe
1908 Discord.exe
Drops file in Windows directory 1 IoCs

Processes:

df759db973efd54d3d5b8b3ddf35d623.exe

description ioc process

File created C:\Windows\serverstart.exe df759db973efd54d3d5b8b3ddf35d623.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4020 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3980 timeout.exe

description	ioc	process
File created	C:\Windows\serverstart.exe	df759db973efd54d3d5b8b3ddf35d623.exe

pid	process
4020	schtasks.exe

pid	process
3980	timeout.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

serverstart.exe

pid	process
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe
2588	serverstart.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

df759db973efd54d3d5b8b3ddf35d623.exeserverstart.exeDiscord.exe

description	pid	process
Token: SeDebugPrivilege	652	df759db973efd54d3d5b8b3ddf35d623.exe
Token: SeDebugPrivilege	2588	serverstart.exe
Token: SeDebugPrivilege	1908	Discord.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

df759db973efd54d3d5b8b3ddf35d623.exeserverstart.execmd.execmd.exe

description	pid	process	target process
PID 652 wrote to memory of 2588	652	df759db973efd54d3d5b8b3ddf35d623.exe	serverstart.exe
PID 652 wrote to memory of 2588	652	df759db973efd54d3d5b8b3ddf35d623.exe	serverstart.exe
PID 652 wrote to memory of 2588	652	df759db973efd54d3d5b8b3ddf35d623.exe	serverstart.exe
PID 2588 wrote to memory of 3680	2588	serverstart.exe	cmd.exe
PID 2588 wrote to memory of 3680	2588	serverstart.exe	cmd.exe
PID 2588 wrote to memory of 3680	2588	serverstart.exe	cmd.exe
PID 2588 wrote to memory of 3560	2588	serverstart.exe	cmd.exe
PID 2588 wrote to memory of 3560	2588	serverstart.exe	cmd.exe
PID 2588 wrote to memory of 3560	2588	serverstart.exe	cmd.exe
PID 3560 wrote to memory of 3980	3560	cmd.exe	timeout.exe
PID 3560 wrote to memory of 3980	3560	cmd.exe	timeout.exe
PID 3560 wrote to memory of 3980	3560	cmd.exe	timeout.exe
PID 3680 wrote to memory of 4020	3680	cmd.exe	schtasks.exe
PID 3680 wrote to memory of 4020	3680	cmd.exe	schtasks.exe
PID 3680 wrote to memory of 4020	3680	cmd.exe	schtasks.exe
PID 3560 wrote to memory of 1908	3560	cmd.exe	Discord.exe
PID 3560 wrote to memory of 1908	3560	cmd.exe	Discord.exe
PID 3560 wrote to memory of 1908	3560	cmd.exe	Discord.exe

C:\Users\Admin\AppData\Local\Temp\df759db973efd54d3d5b8b3ddf35d623.exe
"C:\Users\Admin\AppData\Local\Temp\df759db973efd54d3d5b8b3ddf35d623.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\serverstart.exe
"C:\Windows\serverstart.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2588

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Discord" /tr '"C:\Users\Admin\AppData\Roaming\Discord.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3680

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Discord" /tr '"C:\Users\Admin\AppData\Roaming\Discord.exe"'
4⤵
- Creates scheduled task(s)
PID:4020

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6603.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:3560

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:3980

C:\Users\Admin\AppData\Roaming\Discord.exe
"C:\Users\Admin\AppData\Roaming\Discord.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1908

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6603.tmp.bat
MD5
f780c2745df6979f214f20e8d5553f23

SHA1
7887e8aa3d559e4716bd30626d4a8ee07d0e6dcc

SHA256
46e5f67fcd8f05e9e4979d2b11dc3ad84b790fd56261a708ac0189f00a9ea683

SHA512
2afc0ec970a85995e08801f1a077c0113b4a63c90c8c589d776e59e48ae35564598ce8fe1208380d4259fa54764198b7789232c3b1f7b86b9f34087a057885e5

Download Submit
C:\Users\Admin\AppData\Roaming\Discord.exe
MD5
df296f530ef7511fc617555ea439a832

SHA1
f7378a53dd806c2a10821a4c8373397ea2a1015d

SHA256
6527e25f86c1902c430fc0e52769359f831365969c35fc12ef837b7b63fcc939

SHA512
1b3a530aea31847b36b0b852690b830f89189922a784ac5f839c1f66b0c01093822cd9e6bb104a3e9cba6b05ac2395e4b8b6be33f717910014d469eb41b3c277

Download Submit
C:\Users\Admin\AppData\Roaming\Discord.exe
MD5
df296f530ef7511fc617555ea439a832

SHA1
f7378a53dd806c2a10821a4c8373397ea2a1015d

SHA256
6527e25f86c1902c430fc0e52769359f831365969c35fc12ef837b7b63fcc939

SHA512
1b3a530aea31847b36b0b852690b830f89189922a784ac5f839c1f66b0c01093822cd9e6bb104a3e9cba6b05ac2395e4b8b6be33f717910014d469eb41b3c277

Download Submit
C:\Windows\serverstart.exe
MD5
df296f530ef7511fc617555ea439a832

SHA1
f7378a53dd806c2a10821a4c8373397ea2a1015d

SHA256
6527e25f86c1902c430fc0e52769359f831365969c35fc12ef837b7b63fcc939

SHA512
1b3a530aea31847b36b0b852690b830f89189922a784ac5f839c1f66b0c01093822cd9e6bb104a3e9cba6b05ac2395e4b8b6be33f717910014d469eb41b3c277

Download Submit
C:\Windows\serverstart.exe
MD5
df296f530ef7511fc617555ea439a832

SHA1
f7378a53dd806c2a10821a4c8373397ea2a1015d

SHA256
6527e25f86c1902c430fc0e52769359f831365969c35fc12ef837b7b63fcc939

SHA512
1b3a530aea31847b36b0b852690b830f89189922a784ac5f839c1f66b0c01093822cd9e6bb104a3e9cba6b05ac2395e4b8b6be33f717910014d469eb41b3c277

Download Submit
memory/652-114-0x0000000000D70000-0x0000000000D71000-memory.dmp

Filesize
4KB

Download
memory/652-116-0x00000000055D0000-0x00000000055D1000-memory.dmp

Filesize
4KB

Download
memory/1908-134-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/1908-137-0x0000000005BB0000-0x0000000005BB1000-memory.dmp

Filesize
4KB

Download
memory/1908-136-0x0000000006030000-0x0000000006031000-memory.dmp

Filesize
4KB

Download
memory/1908-129-0x0000000000000000-mapping.dmp

Download
memory/2588-122-0x00000000025A0000-0x00000000025A1000-memory.dmp

Filesize
4KB

Download
memory/2588-123-0x0000000004CD0000-0x0000000004CD1000-memory.dmp

Filesize
4KB

Download
memory/2588-120-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/2588-117-0x0000000000000000-mapping.dmp

Download
memory/3560-125-0x0000000000000000-mapping.dmp

Download
memory/3680-124-0x0000000000000000-mapping.dmp

Download
memory/3980-127-0x0000000000000000-mapping.dmp

Download
memory/4020-128-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads