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

3380 serverstart.exe
3016 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

1532 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1724 timeout.exe

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

pid	process
1532	schtasks.exe

pid	process
1724	timeout.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

serverstart.exe

pid	process
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe
3380	serverstart.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

df759db973efd54d3d5b8b3ddf35d623.exeserverstart.exeDiscord.exe

description	pid	process
Token: SeDebugPrivilege	656	df759db973efd54d3d5b8b3ddf35d623.exe
Token: SeDebugPrivilege	3380	serverstart.exe
Token: SeDebugPrivilege	3016	Discord.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

df759db973efd54d3d5b8b3ddf35d623.exeserverstart.execmd.execmd.exe

description	pid	process	target process
PID 656 wrote to memory of 3380	656	df759db973efd54d3d5b8b3ddf35d623.exe	serverstart.exe
PID 656 wrote to memory of 3380	656	df759db973efd54d3d5b8b3ddf35d623.exe	serverstart.exe
PID 656 wrote to memory of 3380	656	df759db973efd54d3d5b8b3ddf35d623.exe	serverstart.exe
PID 3380 wrote to memory of 4024	3380	serverstart.exe	cmd.exe
PID 3380 wrote to memory of 4024	3380	serverstart.exe	cmd.exe
PID 3380 wrote to memory of 4024	3380	serverstart.exe	cmd.exe
PID 3380 wrote to memory of 3292	3380	serverstart.exe	cmd.exe
PID 3380 wrote to memory of 3292	3380	serverstart.exe	cmd.exe
PID 3380 wrote to memory of 3292	3380	serverstart.exe	cmd.exe
PID 4024 wrote to memory of 1532	4024	cmd.exe	schtasks.exe
PID 4024 wrote to memory of 1532	4024	cmd.exe	schtasks.exe
PID 4024 wrote to memory of 1532	4024	cmd.exe	schtasks.exe
PID 3292 wrote to memory of 1724	3292	cmd.exe	timeout.exe
PID 3292 wrote to memory of 1724	3292	cmd.exe	timeout.exe
PID 3292 wrote to memory of 1724	3292	cmd.exe	timeout.exe
PID 3292 wrote to memory of 3016	3292	cmd.exe	Discord.exe
PID 3292 wrote to memory of 3016	3292	cmd.exe	Discord.exe
PID 3292 wrote to memory of 3016	3292	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:656

C:\Windows\serverstart.exe
"C:\Windows\serverstart.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3380

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:4024

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:1532

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp93CA.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:3292

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:1724

C:\Users\Admin\AppData\Roaming\Discord.exe
"C:\Users\Admin\AppData\Roaming\Discord.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3016

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp93CA.tmp.bat
MD5
d5ba2bdd5ca4dd9f05cfb133ee753ea2

SHA1
547a6d018e1787379c151f5468f32d84180c79a9

SHA256
6396f0c0a2b8cf08dcb8a852543a9506e697b96ecdda53f3d4addc9eb04f8666

SHA512
94e545b686cec2fd7cc4a999c60300b535d1a7a6c67096a132ace2a97dfa905266277b1fd60ebce7da2e23bb304d203628f8ff1a21d0a1a9be617194dfb5d72d

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/656-116-0x0000000005780000-0x0000000005781000-memory.dmp

Filesize
4KB

Download
memory/656-114-0x0000000000EF0000-0x0000000000EF1000-memory.dmp

Filesize
4KB

Download
memory/1532-127-0x0000000000000000-mapping.dmp

Download
memory/1724-128-0x0000000000000000-mapping.dmp

Download
memory/3016-129-0x0000000000000000-mapping.dmp

Download
memory/3016-134-0x0000000004F00000-0x0000000004F01000-memory.dmp

Filesize
4KB

Download
memory/3016-136-0x0000000005C30000-0x0000000005C31000-memory.dmp

Filesize
4KB

Download
memory/3016-137-0x00000000057B0000-0x00000000057B1000-memory.dmp

Filesize
4KB

Download
memory/3292-125-0x0000000000000000-mapping.dmp

Download
memory/3380-123-0x0000000004D10000-0x0000000004D11000-memory.dmp

Filesize
4KB

Download
memory/3380-122-0x0000000004C60000-0x0000000004C61000-memory.dmp

Filesize
4KB

Download
memory/3380-120-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/3380-117-0x0000000000000000-mapping.dmp

Download
memory/4024-124-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads