asyncrat | bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0

General

Target

bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe
Size

272KB
MD5

bf0cf091125bfd2c3a318ce8bedcf170
SHA1

4c5ecc559a5514e5f843e7743e5b6433733ded9c
SHA256

bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0
SHA512

c5f5929af0204fb32fa75acad175d60a80d4b55d9e37d690dde2edc0b77b95c8d4ce63f82514bc136b33394e3484909f772ef89a4d19fdfba758739a340368ff
SSDEEP

3072:DUEcxbgwmPMVOe9VdQsH1bfFpQAy9ckYMmlB/v6A80XH3e55EVu9cBY:DtwmPMVOaesVb7y5YM6VyA80XHbUe

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

127.0.0.1:4449

127.0.0.1:6703

147.185.221.21:4449

147.185.221.21:6703

Mutex

ftbmdvxzjxuuvgonhfr

Attributes

delay
1
install
true
install_file
Eaxset.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2540-1-0x0000000000B50000-0x0000000000B9A000-memory.dmp	VenomRAT
behavioral1/files/0x003200000001930d-16.dat	VenomRAT
behavioral1/memory/2764-18-0x0000000000D80000-0x0000000000DCA000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x003200000001930d-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2764	Eaxset.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2948	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2760	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe
2764	Eaxset.exe
2764	Eaxset.exe
2764	Eaxset.exe
2764	Eaxset.exe
2764	Eaxset.exe
2764	Eaxset.exe
2764	Eaxset.exe
2764	Eaxset.exe
2764	Eaxset.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe
Token: SeDebugPrivilege	2764	Eaxset.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2764	Eaxset.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 2696	2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe	29
PID 2540 wrote to memory of 2696	2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe	29
PID 2540 wrote to memory of 2696	2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe	29
PID 2540 wrote to memory of 2852	2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe	31
PID 2540 wrote to memory of 2852	2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe	31
PID 2540 wrote to memory of 2852	2540	bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe	31
PID 2696 wrote to memory of 2760	2696	cmd.exe	33
PID 2696 wrote to memory of 2760	2696	cmd.exe	33
PID 2696 wrote to memory of 2760	2696	cmd.exe	33
PID 2852 wrote to memory of 2948	2852	cmd.exe	34
PID 2852 wrote to memory of 2948	2852	cmd.exe	34
PID 2852 wrote to memory of 2948	2852	cmd.exe	34
PID 2852 wrote to memory of 2764	2852	cmd.exe	35
PID 2852 wrote to memory of 2764	2852	cmd.exe	35
PID 2852 wrote to memory of 2764	2852	cmd.exe	35

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe
"C:\Users\Admin\AppData\Local\Temp\bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Eaxset" /tr '"C:\Users\Admin\AppData\Roaming\Eaxset.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2696
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Eaxset" /tr '"C:\Users\Admin\AppData\Roaming\Eaxset.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2760
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE743.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2852
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2948
- - C:\Users\Admin\AppData\Roaming\Eaxset.exe
    "C:\Users\Admin\AppData\Roaming\Eaxset.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE743.tmp.bat

Filesize
150B

MD5
82a764a7e4e96c1b9466260948229319

SHA1
470def5349f6aba02ff63c2c34880441b7caf839

SHA256
4bce910b97de145bccd2d36dcca947aa87d9af2fa2a637a7e03497cb43cb1c8f

SHA512
6c1620fc8a761b40e536da889548c857cd4fd32ae7898a249269ea74a4e1e33594f00cd9f704afcca4118cba6df578995c3d42c9f3f5bc91e71206c1536d5933

Download Submit
C:\Users\Admin\AppData\Roaming\Eaxset.exe

Filesize
272KB

MD5
bf0cf091125bfd2c3a318ce8bedcf170

SHA1
4c5ecc559a5514e5f843e7743e5b6433733ded9c

SHA256
bd2f7b22890ba0838cbd19c243195e7efacf5e612a0465194a1ac00800ce94e0

SHA512
c5f5929af0204fb32fa75acad175d60a80d4b55d9e37d690dde2edc0b77b95c8d4ce63f82514bc136b33394e3484909f772ef89a4d19fdfba758739a340368ff

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2540-0-0x000007FEF5643000-0x000007FEF5644000-memory.dmp

Filesize
4KB

Download
memory/2540-1-0x0000000000B50000-0x0000000000B9A000-memory.dmp

Filesize
296KB

Download
memory/2540-3-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

Filesize
9.9MB

Download
memory/2540-4-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

Filesize
9.9MB

Download
memory/2540-14-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

Filesize
9.9MB

Download
memory/2764-18-0x0000000000D80000-0x0000000000DCA000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads