asyncrat | 3b599cc4dbedac85f9d2e5e4f1b96110f05835bbdfb0c01a84bdaaec79885a19

General

Target

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Size

48KB
MD5

852b69a95f1ae83d9142fced3450977b
SHA1

a48b15998be1e979530994675da17566d1769769
SHA256

3b599cc4dbedac85f9d2e5e4f1b96110f05835bbdfb0c01a84bdaaec79885a19
SHA512

23b4602cbcd8abd3c78953e07301daaaaa5e7ff2ea1abba28cecfecd3e6522f0a31a97f7b537c98d2a3a00671b8c9b1d06d0b9e63f9e8359a9395081f1d2f8c9

Score

10^/10

asyncrat rat

Malware Config

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\Gruop.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Gruop.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Gruop.exe	asyncrat

Executes dropped EXE 1 IoCs

Processes:

Gruop.exe

pid process

1660 Gruop.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1620 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

1244 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

884 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe

pid process

2004 3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
2004 3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exeGruop.exe

description pid process

Token: SeDebugPrivilege 2004 3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Token: SeDebugPrivilege 1660 Gruop.exe

pid	process
1660	Gruop.exe

pid	process
1620	cmd.exe

pid	process
1244	schtasks.exe

pid	process
884	timeout.exe

pid	process
2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe

description	pid	process
Token: SeDebugPrivilege	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Token: SeDebugPrivilege	1660	Gruop.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.execmd.execmd.exe

description	pid	process	target process
PID 2004 wrote to memory of 1464	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2004 wrote to memory of 1464	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2004 wrote to memory of 1464	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2004 wrote to memory of 1464	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2004 wrote to memory of 1620	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2004 wrote to memory of 1620	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2004 wrote to memory of 1620	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2004 wrote to memory of 1620	2004	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 1464 wrote to memory of 1244	1464	cmd.exe	schtasks.exe
PID 1464 wrote to memory of 1244	1464	cmd.exe	schtasks.exe
PID 1464 wrote to memory of 1244	1464	cmd.exe	schtasks.exe
PID 1464 wrote to memory of 1244	1464	cmd.exe	schtasks.exe
PID 1620 wrote to memory of 884	1620	cmd.exe	timeout.exe
PID 1620 wrote to memory of 884	1620	cmd.exe	timeout.exe
PID 1620 wrote to memory of 884	1620	cmd.exe	timeout.exe
PID 1620 wrote to memory of 884	1620	cmd.exe	timeout.exe
PID 1620 wrote to memory of 1660	1620	cmd.exe	Gruop.exe
PID 1620 wrote to memory of 1660	1620	cmd.exe	Gruop.exe
PID 1620 wrote to memory of 1660	1620	cmd.exe	Gruop.exe
PID 1620 wrote to memory of 1660	1620	cmd.exe	Gruop.exe

C:\Users\Admin\AppData\Local\Temp\3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
"C:\Users\Admin\AppData\Local\Temp\3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2004

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Gruop" /tr '"C:\Users\Admin\AppData\Roaming\Gruop.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1464

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Gruop" /tr '"C:\Users\Admin\AppData\Roaming\Gruop.exe"'
3⤵
- Creates scheduled task(s)
PID:1244

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC419.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:884

C:\Users\Admin\AppData\Roaming\Gruop.exe
"C:\Users\Admin\AppData\Roaming\Gruop.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1660

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC419.tmp.bat
MD5
94e73be66903345c3466defe6a4592c2

SHA1
530edb3f35608b7f0ea0254386e09ec9a4dfdbaf

SHA256
78ede8346480126568857dea2b0a87d5d9356b26fe5c431cd6c976ace2398cc1

SHA512
c17bb6c9eb830f416d9ec45611aa6f2e4b6b8744e98485f5e222f884f72048bd4ecfe5fed09d422a8e57e0b5c3317dfc8dfdce971ed0c7913cb0885cf3095d41

Download Submit
C:\Users\Admin\AppData\Roaming\Gruop.exe
MD5
852b69a95f1ae83d9142fced3450977b

SHA1
a48b15998be1e979530994675da17566d1769769

SHA256
3b599cc4dbedac85f9d2e5e4f1b96110f05835bbdfb0c01a84bdaaec79885a19

SHA512
23b4602cbcd8abd3c78953e07301daaaaa5e7ff2ea1abba28cecfecd3e6522f0a31a97f7b537c98d2a3a00671b8c9b1d06d0b9e63f9e8359a9395081f1d2f8c9

Download Submit
C:\Users\Admin\AppData\Roaming\Gruop.exe
MD5
852b69a95f1ae83d9142fced3450977b

SHA1
a48b15998be1e979530994675da17566d1769769

SHA256
3b599cc4dbedac85f9d2e5e4f1b96110f05835bbdfb0c01a84bdaaec79885a19

SHA512
23b4602cbcd8abd3c78953e07301daaaaa5e7ff2ea1abba28cecfecd3e6522f0a31a97f7b537c98d2a3a00671b8c9b1d06d0b9e63f9e8359a9395081f1d2f8c9

Download Submit
\Users\Admin\AppData\Roaming\Gruop.exe
MD5
852b69a95f1ae83d9142fced3450977b

SHA1
a48b15998be1e979530994675da17566d1769769

SHA256
3b599cc4dbedac85f9d2e5e4f1b96110f05835bbdfb0c01a84bdaaec79885a19

SHA512
23b4602cbcd8abd3c78953e07301daaaaa5e7ff2ea1abba28cecfecd3e6522f0a31a97f7b537c98d2a3a00671b8c9b1d06d0b9e63f9e8359a9395081f1d2f8c9

Download Submit
memory/884-61-0x0000000000000000-mapping.dmp

Download
memory/1244-60-0x0000000000000000-mapping.dmp

Download
memory/1464-57-0x0000000000000000-mapping.dmp

Download
memory/1620-58-0x0000000000000000-mapping.dmp

Download
memory/1660-64-0x0000000000000000-mapping.dmp

Download
memory/1660-66-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

Filesize
4KB

Download
memory/1660-69-0x0000000000910000-0x0000000000911000-memory.dmp

Filesize
4KB

Download
memory/2004-53-0x0000000001220000-0x0000000001221000-memory.dmp

Filesize
4KB

Download
memory/2004-56-0x00000000010B0000-0x00000000010B1000-memory.dmp

Filesize
4KB

Download
memory/2004-55-0x0000000075C11000-0x0000000075C13000-memory.dmp

Filesize
8KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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