asyncrat | 01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20

General

Target

01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe
Size

63KB
MD5

da4b81bd7225f06fa1ff1a6c0f50c69f
SHA1

e630b7442a8f9cf9945216dcab8e750ebd01e307
SHA256

01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20
SHA512

57017466deb54d0a7a582a5352cbc90600b08cc4b0bd7c0ebf017d30f008507ef9d5257920bc76ffb0e271b9dc358eed7dadefbb2d305d4f6da53bf51a65d3f0
SSDEEP

1536:tQGcst5j5BnihYUbfh9VTRlKQuZCdpqKmY7:Cg39BnaYUbfJttGz

Score

10^/10

asyncrat beyond rat

Malware Config

Extracted

Family

asyncrat

Botnet

Beyond

Attributes

c2_url_file
https://rentry.co/Spread4Filly/raw
delay
2
install
true
install_file
$77svchost.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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\$77svchost.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

$77svchost.exe

pid process

2768 $77svchost.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

Processes:

timeout.exe

pid process

2732 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

Processes:

schtasks.exe

pid process

2764 schtasks.exe

pid	process
2768	$77svchost.exe

pid	process
2732	timeout.exe

pid	process
2764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe

pid	process
580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe
580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe
580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe$77svchost.exe

description	pid	process
Token: SeDebugPrivilege	580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe
Token: SeDebugPrivilege	2768	$77svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.execmd.execmd.exe

description	pid	process	target process
PID 580 wrote to memory of 2464	580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe	cmd.exe
PID 580 wrote to memory of 2464	580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe	cmd.exe
PID 580 wrote to memory of 2464	580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe	cmd.exe
PID 580 wrote to memory of 2872	580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe	cmd.exe
PID 580 wrote to memory of 2872	580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe	cmd.exe
PID 580 wrote to memory of 2872	580	01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe	cmd.exe
PID 2464 wrote to memory of 2764	2464	cmd.exe	schtasks.exe
PID 2464 wrote to memory of 2764	2464	cmd.exe	schtasks.exe
PID 2464 wrote to memory of 2764	2464	cmd.exe	schtasks.exe
PID 2872 wrote to memory of 2732	2872	cmd.exe	timeout.exe
PID 2872 wrote to memory of 2732	2872	cmd.exe	timeout.exe
PID 2872 wrote to memory of 2732	2872	cmd.exe	timeout.exe
PID 2872 wrote to memory of 2768	2872	cmd.exe	$77svchost.exe
PID 2872 wrote to memory of 2768	2872	cmd.exe	$77svchost.exe
PID 2872 wrote to memory of 2768	2872	cmd.exe	$77svchost.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe
"C:\Users\Admin\AppData\Local\Temp\01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "$77svchost" /tr '"C:\Users\Admin\AppData\Roaming\$77svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2464

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "$77svchost" /tr '"C:\Users\Admin\AppData\Roaming\$77svchost.exe"'
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2764

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpDC4B.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:2872

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:2732

C:\Users\Admin\AppData\Roaming\$77svchost.exe
"C:\Users\Admin\AppData\Roaming\$77svchost.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2768

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDC4B.tmp.bat

Filesize
154B

MD5
0a0fe14e639ca456ce5433cd7eea9ffc

SHA1
7b201cd92b8f5b145ba5205441ac3cfca90a8d2e

SHA256
96f5cf2a8f90b1e4bbb0ee5fe5184d601a31904b7e8ef22564c42be9d7b08e32

SHA512
4da9d7909a75b69a7a5011ce4a11deadc7130dda51266180ddd62255cc89937c9640d1a9660aeb63275306ac3054fdb3675bd7c531a9d8ebaf98725424bd8866

Download Submit
C:\Users\Admin\AppData\Roaming\$77svchost.exe

Filesize
63KB

MD5
da4b81bd7225f06fa1ff1a6c0f50c69f

SHA1
e630b7442a8f9cf9945216dcab8e750ebd01e307

SHA256
01c295a6690c48ff3196ff3ef0fef7383bdba9beaa6dadf8426e689263be5e20

SHA512
57017466deb54d0a7a582a5352cbc90600b08cc4b0bd7c0ebf017d30f008507ef9d5257920bc76ffb0e271b9dc358eed7dadefbb2d305d4f6da53bf51a65d3f0

Download Submit
memory/580-0-0x000007FEF5723000-0x000007FEF5724000-memory.dmp

Filesize
4KB

Download
memory/580-1-0x0000000000D80000-0x0000000000D96000-memory.dmp

Filesize
88KB

Download
memory/580-2-0x000007FEF5720000-0x000007FEF610C000-memory.dmp

Filesize
9.9MB

Download
memory/580-3-0x000007FEF5720000-0x000007FEF610C000-memory.dmp

Filesize
9.9MB

Download
memory/580-13-0x000007FEF5720000-0x000007FEF610C000-memory.dmp

Filesize
9.9MB

Download
memory/2768-17-0x00000000011D0000-0x00000000011E6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads