asyncrat | 119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28

General

Target

119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe
Size

181KB
MD5

35e7cba9da6186aabcbeb680b9e62a0f
SHA1

a0aa491f942b485f15a7f59104e26beac1033591
SHA256

119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28
SHA512

64d079e1c3315cd77a018c6b998a5e9a86b45f11565dc00f4f6da737808aab9f5075ba6e96eb915940232333d8706703c80844eb7d86d0585b066bef5c899e12
SSDEEP

3072:CmwGb4OB7fOBUPH354yZqpQVGGRGyAiMeFNNiE7TE8pkkN2eJ1BMZbQX9nMs:CmlfB7zPpypQVGGR6IN3I8pky2kEg9n

Score

10^/10

asyncrat system rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

SYSTEM

C2

UtilityService.ignorelist.com:9696

UtilityService.ignorelist.com:1738

UtilityService.ignorelist.com:2269

Mutex

SGFSHJFgkjdsfadfurgGW

Attributes

delay
3
install
true
install_file
Boot Utility Service.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1120-56-0x0000000000940000-0x0000000000964000-memory.dmp	asyncrat
behavioral1/memory/1120-58-0x0000000000990000-0x00000000009AE000-memory.dmp	asyncrat

Core1 .NET packer 1 IoCs

Detects packer/loader used by .NET malware.

Processes:

resource	yara_rule
behavioral1/memory/1120-56-0x0000000000940000-0x0000000000964000-memory.dmp	Core1

Executes dropped EXE 1 IoCs

Processes:

Boot Utility Service.exe

pid process

1388 Boot Utility Service.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1596 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

1728 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1096 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe

pid process

1120 119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe

pid	process
1388	Boot Utility Service.exe

pid	process
1596	cmd.exe

pid	process
1728	schtasks.exe

pid	process
1096	timeout.exe

pid	process
1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exeBoot Utility Service.exe

description	pid	process
Token: SeDebugPrivilege	1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe
Token: SeDebugPrivilege	1388	Boot Utility Service.exe
Token: SeDebugPrivilege	1388	Boot Utility Service.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.execmd.execmd.exe

description	pid	process	target process
PID 1120 wrote to memory of 1664	1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe	cmd.exe
PID 1120 wrote to memory of 1664	1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe	cmd.exe
PID 1120 wrote to memory of 1664	1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe	cmd.exe
PID 1120 wrote to memory of 1596	1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe	cmd.exe
PID 1120 wrote to memory of 1596	1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe	cmd.exe
PID 1120 wrote to memory of 1596	1120	119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe	cmd.exe
PID 1664 wrote to memory of 1728	1664	cmd.exe	schtasks.exe
PID 1664 wrote to memory of 1728	1664	cmd.exe	schtasks.exe
PID 1664 wrote to memory of 1728	1664	cmd.exe	schtasks.exe
PID 1596 wrote to memory of 1096	1596	cmd.exe	timeout.exe
PID 1596 wrote to memory of 1096	1596	cmd.exe	timeout.exe
PID 1596 wrote to memory of 1096	1596	cmd.exe	timeout.exe
PID 1596 wrote to memory of 1388	1596	cmd.exe	Boot Utility Service.exe
PID 1596 wrote to memory of 1388	1596	cmd.exe	Boot Utility Service.exe
PID 1596 wrote to memory of 1388	1596	cmd.exe	Boot Utility Service.exe

C:\Users\Admin\AppData\Local\Temp\119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe
"C:\Users\Admin\AppData\Local\Temp\119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Boot Utility Service" /tr '"C:\Users\Admin\AppData\Roaming\Boot Utility Service.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\system32\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Boot Utility Service" /tr '"C:\Users\Admin\AppData\Roaming\Boot Utility Service.exe"'
3⤵
- Creates scheduled task(s)
PID:1728

C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp93A9.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1596

C:\Windows\system32\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1096

C:\Users\Admin\AppData\Roaming\Boot Utility Service.exe
"C:\Users\Admin\AppData\Roaming\Boot Utility Service.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1388

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\tmp93A9.tmp.bat
Filesize
164B

MD5
9c52ed747baafcf8e2d3971e86ce9322

SHA1
78750acf38b67538562fd6eef93a282a35511a50

SHA256
77b891ba50e1d65bac7c94e739742bb4ee514e5203e2ed1e7eabb419fd2f7161

SHA512
469331972296a5195fe1b2d20307df7374c61d047cfab6749a4165a0152042c3efd0aaf390a9d01100c1ac041be475da45fb508552c60b4a68e89e9c61ab2f66

Download Submit
C:\Users\Admin\AppData\Roaming\Boot Utility Service.exe
Filesize
181KB

MD5
35e7cba9da6186aabcbeb680b9e62a0f

SHA1
a0aa491f942b485f15a7f59104e26beac1033591

SHA256
119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28

SHA512
64d079e1c3315cd77a018c6b998a5e9a86b45f11565dc00f4f6da737808aab9f5075ba6e96eb915940232333d8706703c80844eb7d86d0585b066bef5c899e12

Download Submit
C:\Users\Admin\AppData\Roaming\Boot Utility Service.exe
Filesize
181KB

MD5
35e7cba9da6186aabcbeb680b9e62a0f

SHA1
a0aa491f942b485f15a7f59104e26beac1033591

SHA256
119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28

SHA512
64d079e1c3315cd77a018c6b998a5e9a86b45f11565dc00f4f6da737808aab9f5075ba6e96eb915940232333d8706703c80844eb7d86d0585b066bef5c899e12

Download Submit
\Users\Admin\AppData\Roaming\Boot Utility Service.exe
Filesize
181KB

MD5
35e7cba9da6186aabcbeb680b9e62a0f

SHA1
a0aa491f942b485f15a7f59104e26beac1033591

SHA256
119996da24b3935ec811bcd72583b6d1cd5205097265100c20a6ce773b79fb28

SHA512
64d079e1c3315cd77a018c6b998a5e9a86b45f11565dc00f4f6da737808aab9f5075ba6e96eb915940232333d8706703c80844eb7d86d0585b066bef5c899e12

Download Submit
memory/1096-64-0x0000000000000000-mapping.dmp

Download
memory/1120-58-0x0000000000990000-0x00000000009AE000-memory.dmp

Filesize
120KB

Download
memory/1120-59-0x000007FEFBCC1000-0x000007FEFBCC3000-memory.dmp

Filesize
8KB

Download
memory/1120-54-0x000000013F420000-0x000000013F452000-memory.dmp

Filesize
200KB

Download
memory/1120-57-0x0000000000160000-0x0000000000168000-memory.dmp

Filesize
32KB

Download
memory/1120-56-0x0000000000940000-0x0000000000964000-memory.dmp

Filesize
144KB

Download
memory/1120-55-0x0000000000600000-0x0000000000624000-memory.dmp

Filesize
144KB

Download
memory/1388-66-0x0000000000000000-mapping.dmp

Download
memory/1388-69-0x000000013FC00000-0x000000013FC32000-memory.dmp

Filesize
200KB

Download
memory/1596-61-0x0000000000000000-mapping.dmp

Download
memory/1664-60-0x0000000000000000-mapping.dmp

Download
memory/1728-62-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads