asyncrat | 26b9ff2aea0f6bb6e98627a46effb1d6f0c72908fc2fa4985a72a4d199ac0870

General

Target

04d0649b4bfa1dfeae3a8c86453397a3.exe
Size

45KB
MD5

04d0649b4bfa1dfeae3a8c86453397a3
SHA1

f47a6585df4bbb264017cacbb11a2d0e88fcea84
SHA256

26b9ff2aea0f6bb6e98627a46effb1d6f0c72908fc2fa4985a72a4d199ac0870
SHA512

e2c7ab0d8b80f3b2ae4369177d654011b75cd288e855724cee2dd64af45dff81e12d5a5ba72c075c6d48291f79b83a3cf120c068c90f01ddf36e5ae88901ab68

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

8.tcp.ngrok.io:18318

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
v4WrWlQmMr9Nbg46PqpYZ1ZQie6iSq6f
anti_detection
false
autorun
true
bdos
false
delay
Default
host
8.tcp.ngrok.io
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
18318
version
0.5.7B

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 3 IoCs

rat

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\svchost.exe	asyncrat
C:\Users\Admin\AppData\Roaming\svchost.exe	asyncrat
C:\Users\Admin\AppData\Roaming\svchost.exe	asyncrat

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1668 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1640 cmd.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

1676 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

992 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

04d0649b4bfa1dfeae3a8c86453397a3.exe

pid process

1840 04d0649b4bfa1dfeae3a8c86453397a3.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

04d0649b4bfa1dfeae3a8c86453397a3.exesvchost.exe

description pid process

Token: SeDebugPrivilege 1840 04d0649b4bfa1dfeae3a8c86453397a3.exe
Token: SeDebugPrivilege 1668 svchost.exe

pid	process
1668	svchost.exe

pid	process
1640	cmd.exe

pid	process
1676	schtasks.exe

pid	process
992	timeout.exe

pid	process
1840	04d0649b4bfa1dfeae3a8c86453397a3.exe

description	pid	process
Token: SeDebugPrivilege	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe
Token: SeDebugPrivilege	1668	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

04d0649b4bfa1dfeae3a8c86453397a3.execmd.execmd.exe

description	pid	process	target process
PID 1840 wrote to memory of 1700	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1840 wrote to memory of 1700	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1840 wrote to memory of 1700	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1840 wrote to memory of 1700	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1840 wrote to memory of 1640	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1840 wrote to memory of 1640	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1840 wrote to memory of 1640	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1840 wrote to memory of 1640	1840	04d0649b4bfa1dfeae3a8c86453397a3.exe	cmd.exe
PID 1700 wrote to memory of 1676	1700	cmd.exe	schtasks.exe
PID 1700 wrote to memory of 1676	1700	cmd.exe	schtasks.exe
PID 1700 wrote to memory of 1676	1700	cmd.exe	schtasks.exe
PID 1700 wrote to memory of 1676	1700	cmd.exe	schtasks.exe
PID 1640 wrote to memory of 992	1640	cmd.exe	timeout.exe
PID 1640 wrote to memory of 992	1640	cmd.exe	timeout.exe
PID 1640 wrote to memory of 992	1640	cmd.exe	timeout.exe
PID 1640 wrote to memory of 992	1640	cmd.exe	timeout.exe
PID 1640 wrote to memory of 1668	1640	cmd.exe	svchost.exe
PID 1640 wrote to memory of 1668	1640	cmd.exe	svchost.exe
PID 1640 wrote to memory of 1668	1640	cmd.exe	svchost.exe
PID 1640 wrote to memory of 1668	1640	cmd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\04d0649b4bfa1dfeae3a8c86453397a3.exe
"C:\Users\Admin\AppData\Local\Temp\04d0649b4bfa1dfeae3a8c86453397a3.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1840

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:1676

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB07B.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:992

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1668

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\tmpB07B.tmp.bat
MD5
a08854db2274ea2de14a7d1b4692ef55

SHA1
36b6c6039e2a559181fe1e9e0b81929af2837112

SHA256
11aa9fab002815dff654ff0609959814ca0babab57e4348606712e0e0be5b3d3

SHA512
11a774ad5e3f85b65ea4eb80ba1e91c0d860b2a00ed6e0ac011cd26e02fa6f731a236138234b8e8aba57bb25d019d1db2a29463662768e313cb201b5683090d8

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
04d0649b4bfa1dfeae3a8c86453397a3

SHA1
f47a6585df4bbb264017cacbb11a2d0e88fcea84

SHA256
26b9ff2aea0f6bb6e98627a46effb1d6f0c72908fc2fa4985a72a4d199ac0870

SHA512
e2c7ab0d8b80f3b2ae4369177d654011b75cd288e855724cee2dd64af45dff81e12d5a5ba72c075c6d48291f79b83a3cf120c068c90f01ddf36e5ae88901ab68

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
04d0649b4bfa1dfeae3a8c86453397a3

SHA1
f47a6585df4bbb264017cacbb11a2d0e88fcea84

SHA256
26b9ff2aea0f6bb6e98627a46effb1d6f0c72908fc2fa4985a72a4d199ac0870

SHA512
e2c7ab0d8b80f3b2ae4369177d654011b75cd288e855724cee2dd64af45dff81e12d5a5ba72c075c6d48291f79b83a3cf120c068c90f01ddf36e5ae88901ab68

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe
MD5
04d0649b4bfa1dfeae3a8c86453397a3

SHA1
f47a6585df4bbb264017cacbb11a2d0e88fcea84

SHA256
26b9ff2aea0f6bb6e98627a46effb1d6f0c72908fc2fa4985a72a4d199ac0870

SHA512
e2c7ab0d8b80f3b2ae4369177d654011b75cd288e855724cee2dd64af45dff81e12d5a5ba72c075c6d48291f79b83a3cf120c068c90f01ddf36e5ae88901ab68

Download Submit
memory/992-68-0x0000000000000000-mapping.dmp

Download
memory/1640-65-0x0000000000000000-mapping.dmp

Download
memory/1668-71-0x0000000000000000-mapping.dmp

Download
memory/1668-73-0x00000000012C0000-0x00000000012C1000-memory.dmp

Filesize
4KB

Download
memory/1668-76-0x0000000004E50000-0x0000000004E51000-memory.dmp

Filesize
4KB

Download
memory/1676-66-0x0000000000000000-mapping.dmp

Download
memory/1700-64-0x0000000000000000-mapping.dmp

Download
memory/1840-63-0x0000000004D20000-0x0000000004D21000-memory.dmp

Filesize
4KB

Download
memory/1840-62-0x0000000074D91000-0x0000000074D93000-memory.dmp

Filesize
8KB

Download
memory/1840-60-0x0000000001070000-0x0000000001071000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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