asyncrat | f0de46c374e87a43f8e8d977ed7920271beb883f0cc19492698301ea412498e5

General

Target

Client.exe
Size

74KB
MD5

ff9957be040ba821afc9248d7f3c9e74
SHA1

19bf5b47a05a06f8c448286979c17364df9b9d8a
SHA256

f0de46c374e87a43f8e8d977ed7920271beb883f0cc19492698301ea412498e5
SHA512

2b283049ffaecb665006453bf5757ea7adc95a678ded145285bf8529a824a1ec10d1e92c319553d436d4aea4e665fe995db6748a22fa72898faf8adbeef17703
SSDEEP

1536:SUaAcx2l/Cx2PMVie9VdQuDI6H1bf/3EQzcuLVclN:SUDcx2Bq2PMVie9VdQsH1bffEQnBY

Score

10^/10

asyncrat venomrat linas discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Linas

C2

127.0.0.1:4449

185.241.61.180:4449

Mutex

lxvckrzncz

Attributes

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

aes.plain

Signatures

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

VenomRAT 3 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2124-1-0x00000000013A0000-0x00000000013B8000-memory.dmp	VenomRAT
behavioral1/files/0x0003000000018334-16.dat	VenomRAT
behavioral1/memory/3024-18-0x0000000000D20000-0x0000000000D38000-memory.dmp	VenomRAT

Venomrat family
venomrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0003000000018334-16.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
3024	Defender.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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
2312	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
2828	schtasks.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

pid	Process
2124	Client.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe
3024	Defender.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	Client.exe
Token: SeDebugPrivilege	3024	Defender.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3024	Defender.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2448	2124	Client.exe	29
PID 2124 wrote to memory of 2448	2124	Client.exe	29
PID 2124 wrote to memory of 2448	2124	Client.exe	29
PID 2124 wrote to memory of 2944	2124	Client.exe	31
PID 2124 wrote to memory of 2944	2124	Client.exe	31
PID 2124 wrote to memory of 2944	2124	Client.exe	31
PID 2944 wrote to memory of 2312	2944	cmd.exe	33
PID 2944 wrote to memory of 2312	2944	cmd.exe	33
PID 2944 wrote to memory of 2312	2944	cmd.exe	33
PID 2448 wrote to memory of 2828	2448	cmd.exe	34
PID 2448 wrote to memory of 2828	2448	cmd.exe	34
PID 2448 wrote to memory of 2828	2448	cmd.exe	34
PID 2944 wrote to memory of 3024	2944	cmd.exe	35
PID 2944 wrote to memory of 3024	2944	cmd.exe	35
PID 2944 wrote to memory of 3024	2944	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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Defender" /tr '"C:\Users\Admin\AppData\Roaming\Defender.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2448
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Defender" /tr '"C:\Users\Admin\AppData\Roaming\Defender.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2828
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3B5B.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2944
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2312
- - C:\Users\Admin\AppData\Roaming\Defender.exe
    "C:\Users\Admin\AppData\Roaming\Defender.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3024

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

2

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\Cab7226.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar8626.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3B5B.tmp.bat

Filesize
152B

MD5
533b3eeb64f50ea4cbd847ac06a35b44

SHA1
a32b5ea17726a4f9b92ab3a607c641be5229d86c

SHA256
af33c2af68a638e03df2916f4e9b750402596e4f287154713d56763bd1e0e551

SHA512
2ebf312c57048d5583b32052a3f07eff3ad9b50aedf6c5ae3208245299e9cb963516a59b93aa94343d24b94a0c0fc8eed557f532a5b76e9ac0c338563b9603d2

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

Filesize
74KB

MD5
ff9957be040ba821afc9248d7f3c9e74

SHA1
19bf5b47a05a06f8c448286979c17364df9b9d8a

SHA256
f0de46c374e87a43f8e8d977ed7920271beb883f0cc19492698301ea412498e5

SHA512
2b283049ffaecb665006453bf5757ea7adc95a678ded145285bf8529a824a1ec10d1e92c319553d436d4aea4e665fe995db6748a22fa72898faf8adbeef17703

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2124-0-0x000007FEF5E03000-0x000007FEF5E04000-memory.dmp

Filesize
4KB

Download
memory/2124-1-0x00000000013A0000-0x00000000013B8000-memory.dmp

Filesize
96KB

Download
memory/2124-3-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/2124-12-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/2124-14-0x000007FEF5E00000-0x000007FEF67EC000-memory.dmp

Filesize
9.9MB

Download
memory/3024-18-0x0000000000D20000-0x0000000000D38000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads