asyncrat | 3b599cc4dbedac85f9d2e5e4f1b96110f05835bbdfb0c01a84bdaaec79885a19

General

Target

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Size

48KB
MD5

852b69a95f1ae83d9142fced3450977b
SHA1

a48b15998be1e979530994675da17566d1769769
SHA256

3b599cc4dbedac85f9d2e5e4f1b96110f05835bbdfb0c01a84bdaaec79885a19
SHA512

23b4602cbcd8abd3c78953e07301daaaaa5e7ff2ea1abba28cecfecd3e6522f0a31a97f7b537c98d2a3a00671b8c9b1d06d0b9e63f9e8359a9395081f1d2f8c9

Score

10^/10

asyncrat rat suricata

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

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

580 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

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

Processes:

timeout.exe

pid process

2244 timeout.exe

pid	process
580	Gruop.exe

pid	process
60	schtasks.exe

pid	process
2244	timeout.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe

pid	process
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exeGruop.exe

description pid process

Token: SeDebugPrivilege 3728 3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Token: SeDebugPrivilege 580 Gruop.exe

description	pid	process
Token: SeDebugPrivilege	3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe
Token: SeDebugPrivilege	580	Gruop.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.execmd.execmd.exe

description	pid	process	target process
PID 3728 wrote to memory of 752	3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3728 wrote to memory of 752	3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3728 wrote to memory of 752	3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3728 wrote to memory of 424	3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3728 wrote to memory of 424	3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 3728 wrote to memory of 424	3728	3B599CC4DBEDAC85F9D2E5E4F1B96110F05835BBDFB0C.exe	cmd.exe
PID 752 wrote to memory of 60	752	cmd.exe	schtasks.exe
PID 752 wrote to memory of 60	752	cmd.exe	schtasks.exe
PID 752 wrote to memory of 60	752	cmd.exe	schtasks.exe
PID 424 wrote to memory of 2244	424	cmd.exe	timeout.exe
PID 424 wrote to memory of 2244	424	cmd.exe	timeout.exe
PID 424 wrote to memory of 2244	424	cmd.exe	timeout.exe
PID 424 wrote to memory of 580	424	cmd.exe	Gruop.exe
PID 424 wrote to memory of 580	424	cmd.exe	Gruop.exe
PID 424 wrote to memory of 580	424	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:3728
- 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:752
- - 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:60
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4272.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:424
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2244
- - C:\Users\Admin\AppData\Roaming\Gruop.exe
    "C:\Users\Admin\AppData\Roaming\Gruop.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:580

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\tmp4272.tmp.bat

MD5
f27130d2aafa37bed16d663a4d15f967

SHA1
1b648df4adc749084520239bccfa546daebb8020

SHA256
f1eb6d3d27ee1f51b83a52eb9c83d2225aff1b1b6d66423645891bd903d206ce

SHA512
3dc5d044f40dc95e7f3d6c73c5a5b4f233c63853f9c793dfcae7d056569984d9739f6d7453289f0e94eb33a9d962d8bb173292d752fd1a815fb2cec46596bd13

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/60-121-0x0000000000000000-mapping.dmp

Download
memory/424-119-0x0000000000000000-mapping.dmp

Download
memory/580-123-0x0000000000000000-mapping.dmp

Download
memory/580-128-0x0000000004A80000-0x0000000004A81000-memory.dmp

Filesize
4KB

Download
memory/580-130-0x0000000005620000-0x0000000005621000-memory.dmp

Filesize
4KB

Download
memory/580-131-0x0000000005190000-0x0000000005191000-memory.dmp

Filesize
4KB

Download
memory/752-118-0x0000000000000000-mapping.dmp

Download
memory/2244-122-0x0000000000000000-mapping.dmp

Download
memory/3728-114-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/3728-117-0x0000000004F50000-0x0000000004F51000-memory.dmp

Filesize
4KB

Download
memory/3728-116-0x0000000004C40000-0x0000000004C41000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads