asyncrat | df9d5a6d4edf1baf28fe59cc742cb980dfba7613a17b50c5a75f3fdd756bbc54

General

Target

89bc2f3d54f79215dd8f427e8edabfc0N.exe
Size

74KB
MD5

89bc2f3d54f79215dd8f427e8edabfc0
SHA1

1e371498d6bd602ecaf595e1f12ab2ffa82c761c
SHA256

df9d5a6d4edf1baf28fe59cc742cb980dfba7613a17b50c5a75f3fdd756bbc54
SHA512

119a3361e3f6c046c2b98090fa4b7eb08477cb266325df3af2978e8c14e768da63122d4d51bbb674eb78c9866945188312e3fdad6fe093f26188ea922f289595
SSDEEP

1536:OU/ccx0dxCKg6PMVSUiLsiIyTH1bR/SjSwDQzcqLVclN:OU0cx0f9g6PMVtiFTH1bR6WEQbBY

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

C2

94.156.69.242:5000

Mutex

rufrwqqzhtx

Attributes

delay
1
install
true
install_file
WinUpdate.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/1872-1-0x0000000000260000-0x0000000000278000-memory.dmp	VenomRAT
behavioral1/files/0x0008000000016aa4-17.dat	VenomRAT
behavioral1/memory/2788-18-0x0000000001110000-0x0000000001128000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0008000000016aa4-17.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2788	WinUpdate.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2660	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
2248	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe
1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe
1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe
2788	WinUpdate.exe
2788	WinUpdate.exe
2788	WinUpdate.exe
2788	WinUpdate.exe
2788	WinUpdate.exe
2788	WinUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe
Token: SeDebugPrivilege	2788	WinUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2788	WinUpdate.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 2460	1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe	31
PID 1872 wrote to memory of 2460	1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe	31
PID 1872 wrote to memory of 2460	1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe	31
PID 1872 wrote to memory of 2296	1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe	32
PID 1872 wrote to memory of 2296	1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe	32
PID 1872 wrote to memory of 2296	1872	89bc2f3d54f79215dd8f427e8edabfc0N.exe	32
PID 2460 wrote to memory of 2248	2460	cmd.exe	35
PID 2460 wrote to memory of 2248	2460	cmd.exe	35
PID 2460 wrote to memory of 2248	2460	cmd.exe	35
PID 2296 wrote to memory of 2660	2296	cmd.exe	36
PID 2296 wrote to memory of 2660	2296	cmd.exe	36
PID 2296 wrote to memory of 2660	2296	cmd.exe	36
PID 2296 wrote to memory of 2788	2296	cmd.exe	37
PID 2296 wrote to memory of 2788	2296	cmd.exe	37
PID 2296 wrote to memory of 2788	2296	cmd.exe	37

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\89bc2f3d54f79215dd8f427e8edabfc0N.exe
"C:\Users\Admin\AppData\Local\Temp\89bc2f3d54f79215dd8f427e8edabfc0N.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2460
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WinUpdate" /tr '"C:\Users\Admin\AppData\Roaming\WinUpdate.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2248
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpDCF7.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2296
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2660
- - C:\Users\Admin\AppData\Roaming\WinUpdate.exe
    "C:\Users\Admin\AppData\Roaming\WinUpdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2788

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDCF7.tmp.bat

Filesize
153B

MD5
ae47d1b82e7e2ce80a942a9deab80559

SHA1
b669dc98334e4812622ce0dea4de58d917bd9500

SHA256
b94e6a76eba4d87df936d50abe7d7774fe60e27c1a7fecf0cba6ac082f4d703d

SHA512
31dcada6361f4105b3344ab8d0d62876265706267aa93255eaa0297ad661216f4751b4e2da86e1f746b1af0fdd20086eae07ef914480d78d5e2ae2af49a5a3ef

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

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

Filesize
74KB

MD5
89bc2f3d54f79215dd8f427e8edabfc0

SHA1
1e371498d6bd602ecaf595e1f12ab2ffa82c761c

SHA256
df9d5a6d4edf1baf28fe59cc742cb980dfba7613a17b50c5a75f3fdd756bbc54

SHA512
119a3361e3f6c046c2b98090fa4b7eb08477cb266325df3af2978e8c14e768da63122d4d51bbb674eb78c9866945188312e3fdad6fe093f26188ea922f289595

Download Submit
memory/1872-0-0x000007FEF6153000-0x000007FEF6154000-memory.dmp

Filesize
4KB

Download
memory/1872-1-0x0000000000260000-0x0000000000278000-memory.dmp

Filesize
96KB

Download
memory/1872-3-0x000007FEF6150000-0x000007FEF6B3C000-memory.dmp

Filesize
9.9MB

Download
memory/1872-12-0x000007FEF6150000-0x000007FEF6B3C000-memory.dmp

Filesize
9.9MB

Download
memory/1872-13-0x000007FEF6150000-0x000007FEF6B3C000-memory.dmp

Filesize
9.9MB

Download
memory/2788-18-0x0000000001110000-0x0000000001128000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads