asyncrat | 0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82

General

Target

dll-cleaned.exe
Size

130KB
MD5

691502fd02493f30d58d7802e1f2db41
SHA1

e23da718103e8653f3923e40c819ffa8b0896ce8
SHA256

0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82
SHA512

4c799b7538fbed61f2d2b59964ee50896619d24421c483805209ef5e53b2604d760cd49a80424c53c7d5c89dd630ab26a7ab509df1fe0699ab42353c966c71e7

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

23112020.ddns.net:1231

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
tSTqwE1Vnue4SH2KuKjIVUBSuPclsXSq
anti_detection
false
autorun
true
bdos
false
delay
Default
host
23112020.ddns.net
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
1231
version
0.5.7B

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/580-6-0x00000000017B0000-0x00000000017BC000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

2892 svchost.exe
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

3108 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

3916 timeout.exe

pid	process
2892	svchost.exe

pid	process
3108	schtasks.exe

pid	process
3916	timeout.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

dll-cleaned.exe

pid	process
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe
580	dll-cleaned.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

dll-cleaned.exesvchost.exe

description pid process

Token: SeDebugPrivilege 580 dll-cleaned.exe
Token: SeDebugPrivilege 2892 svchost.exe

description	pid	process
Token: SeDebugPrivilege	580	dll-cleaned.exe
Token: SeDebugPrivilege	2892	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

dll-cleaned.execmd.execmd.exe

description	pid	process	target process
PID 580 wrote to memory of 2264	580	dll-cleaned.exe	cmd.exe
PID 580 wrote to memory of 2264	580	dll-cleaned.exe	cmd.exe
PID 580 wrote to memory of 2264	580	dll-cleaned.exe	cmd.exe
PID 580 wrote to memory of 1508	580	dll-cleaned.exe	cmd.exe
PID 580 wrote to memory of 1508	580	dll-cleaned.exe	cmd.exe
PID 580 wrote to memory of 1508	580	dll-cleaned.exe	cmd.exe
PID 2264 wrote to memory of 3108	2264	cmd.exe	schtasks.exe
PID 2264 wrote to memory of 3108	2264	cmd.exe	schtasks.exe
PID 2264 wrote to memory of 3108	2264	cmd.exe	schtasks.exe
PID 1508 wrote to memory of 3916	1508	cmd.exe	timeout.exe
PID 1508 wrote to memory of 3916	1508	cmd.exe	timeout.exe
PID 1508 wrote to memory of 3916	1508	cmd.exe	timeout.exe
PID 1508 wrote to memory of 2892	1508	cmd.exe	svchost.exe
PID 1508 wrote to memory of 2892	1508	cmd.exe	svchost.exe
PID 1508 wrote to memory of 2892	1508	cmd.exe	svchost.exe

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

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:2264

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:3108

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp46B3.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:1508

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:3916

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2892

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp46B3.tmp.bat
MD5
4583c5c65cf6f055b28702b93ea76102

SHA1
27506cafaab9b58c33cdb2b56b8e8512d8dd23e4

SHA256
3736a70d4062e410cc529dfb7651095186b23c04a4701e8feac7bcf735fc8711

SHA512
e71a67417a2ae3711d0f3ccdbd0f85642cf2ef7cc085d280cd923983de8f02eab6ff1e0330291b268319db8a0ba1095a8368b3d527520c5e4e955e18d1cf68c1

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
691502fd02493f30d58d7802e1f2db41

SHA1
e23da718103e8653f3923e40c819ffa8b0896ce8

SHA256
0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82

SHA512
4c799b7538fbed61f2d2b59964ee50896619d24421c483805209ef5e53b2604d760cd49a80424c53c7d5c89dd630ab26a7ab509df1fe0699ab42353c966c71e7

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
691502fd02493f30d58d7802e1f2db41

SHA1
e23da718103e8653f3923e40c819ffa8b0896ce8

SHA256
0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82

SHA512
4c799b7538fbed61f2d2b59964ee50896619d24421c483805209ef5e53b2604d760cd49a80424c53c7d5c89dd630ab26a7ab509df1fe0699ab42353c966c71e7

Download Submit
memory/580-6-0x00000000017B0000-0x00000000017BC000-memory.dmp

Filesize
48KB

Download
memory/580-2-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/580-5-0x00000000057D0000-0x00000000057D1000-memory.dmp

Filesize
4KB

Download
memory/580-3-0x0000000000F80000-0x0000000000F81000-memory.dmp

Filesize
4KB

Download
memory/1508-8-0x0000000000000000-mapping.dmp

Download
memory/2264-7-0x0000000000000000-mapping.dmp

Download
memory/2892-12-0x0000000000000000-mapping.dmp

Download
memory/2892-15-0x0000000073DF0000-0x00000000744DE000-memory.dmp

Filesize
6.9MB

Download
memory/2892-20-0x0000000006100000-0x0000000006101000-memory.dmp

Filesize
4KB

Download
memory/2892-21-0x0000000005C00000-0x0000000005C01000-memory.dmp

Filesize
4KB

Download
memory/3108-10-0x0000000000000000-mapping.dmp

Download
memory/3916-11-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads