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 2 IoCs

rat

Processes:

resource	yara_rule
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

420 Gruop.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

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

Processes:

timeout.exe

pid process

1892 timeout.exe

pid	process
420	Gruop.exe

pid	process
764	schtasks.exe

pid	process
1892	timeout.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe

pid	process
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exeGruop.exe

description pid process

Token: SeDebugPrivilege 3628 3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Token: SeDebugPrivilege 420 Gruop.exe

description	pid	process
Token: SeDebugPrivilege	3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Token: SeDebugPrivilege	420	Gruop.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.execmd.execmd.exe

description	pid	process	target process
PID 3628 wrote to memory of 2220	3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3628 wrote to memory of 2220	3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3628 wrote to memory of 2220	3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3628 wrote to memory of 1008	3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3628 wrote to memory of 1008	3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3628 wrote to memory of 1008	3628	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 2220 wrote to memory of 764	2220	cmd.exe	schtasks.exe
PID 2220 wrote to memory of 764	2220	cmd.exe	schtasks.exe
PID 2220 wrote to memory of 764	2220	cmd.exe	schtasks.exe
PID 1008 wrote to memory of 1892	1008	cmd.exe	timeout.exe
PID 1008 wrote to memory of 1892	1008	cmd.exe	timeout.exe
PID 1008 wrote to memory of 1892	1008	cmd.exe	timeout.exe
PID 1008 wrote to memory of 420	1008	cmd.exe	Gruop.exe
PID 1008 wrote to memory of 420	1008	cmd.exe	Gruop.exe
PID 1008 wrote to memory of 420	1008	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:3628

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:2220

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:764

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3478.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:1008

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1892

C:\Users\Admin\AppData\Roaming\Gruop.exe
"C:\Users\Admin\AppData\Roaming\Gruop.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:420

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\tmp3478.tmp.bat
MD5
89affcc73a9e72c91b3a1a79afe5c189

SHA1
842a6f0f182b55d703338d3423ae74beaf45ef08

SHA256
a45bc2600f879955b4f2690ed9b132da00abbdff7f8f244701ab5516590371ca

SHA512
40649bb3c2f29477a7ecbdbbe8f681691cdc4f5acf47c1ab25fd0393c744293e402f2e2704b160a0f11a825a34803bf16433f3a8101f3ef6ff9b2f64bf992483

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
memory/420-123-0x0000000000000000-mapping.dmp

Download
memory/420-131-0x0000000005C60000-0x0000000005C61000-memory.dmp

Filesize
4KB

Download
memory/420-130-0x00000000063E0000-0x00000000063E1000-memory.dmp

Filesize
4KB

Download
memory/420-128-0x0000000005660000-0x0000000005661000-memory.dmp

Filesize
4KB

Download
memory/764-121-0x0000000000000000-mapping.dmp

Download
memory/1008-119-0x0000000000000000-mapping.dmp

Download
memory/1892-122-0x0000000000000000-mapping.dmp

Download
memory/2220-118-0x0000000000000000-mapping.dmp

Download
memory/3628-114-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/3628-117-0x0000000004EA0000-0x0000000004EA1000-memory.dmp

Filesize
4KB

Download
memory/3628-116-0x0000000004B90000-0x0000000004B91000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads