asyncrat | 81f8466583c0a4edff411a3c7a4b2a82a3ef97ebe1f03c3df99500e70c95a399

General

Target

b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
Size

243KB
MD5

d88a06a393582a79ab6da48982ec87ae
SHA1

e5cc4271431fa138f4594847c20a5be3f6c919e4
SHA256

b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537
SHA512

41c75993633bf8d1f2dd9ab956ed40510a1d7678214a5311aed096c0e4678d6df57542908c4329f2424e9cb488f15cd554b06b151e909f7c70e4ce9d9a9191ac
SSDEEP

3072:KHkVhd52JYWsfVrhbjAY1GSEuywqamd/4bWSHqYubGtHshmRgSPG9oMNLxb:KHkVhd52JdYhbt1GCE2bUwZe+PElNh

Score

10^/10

asyncrat venomrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

89.23.100.93:4449

Mutex

oonrejgwedvxwse

Attributes

delay
1
install
true
install_file
calc.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/2692-1-0x00000000002C0000-0x00000000002D8000-memory.dmp	VenomRAT
behavioral1/memory/2692-5-0x0000000000400000-0x000000000043F000-memory.dmp	VenomRAT
behavioral1/memory/2624-21-0x0000000000230000-0x0000000000248000-memory.dmp	VenomRAT

Venomrat family
venomrat

Executes dropped EXE 1 IoCs

pid	Process
2624	calc.exe

Loads dropped DLL 2 IoCs

pid	Process
2816	cmd.exe
2816	cmd.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2716	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
2608	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
2624	calc.exe
2624	calc.exe
2624	calc.exe
2624	calc.exe
2624	calc.exe
2624	calc.exe
2624	calc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
Token: SeDebugPrivilege	2624	calc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2624	calc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 2560	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	31
PID 2692 wrote to memory of 2560	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	31
PID 2692 wrote to memory of 2560	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	31
PID 2692 wrote to memory of 2560	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	31
PID 2692 wrote to memory of 2816	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	33
PID 2692 wrote to memory of 2816	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	33
PID 2692 wrote to memory of 2816	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	33
PID 2692 wrote to memory of 2816	2692	b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe	33
PID 2816 wrote to memory of 2716	2816	cmd.exe	35
PID 2816 wrote to memory of 2716	2816	cmd.exe	35
PID 2816 wrote to memory of 2716	2816	cmd.exe	35
PID 2816 wrote to memory of 2716	2816	cmd.exe	35
PID 2560 wrote to memory of 2608	2560	cmd.exe	36
PID 2560 wrote to memory of 2608	2560	cmd.exe	36
PID 2560 wrote to memory of 2608	2560	cmd.exe	36
PID 2560 wrote to memory of 2608	2560	cmd.exe	36
PID 2816 wrote to memory of 2624	2816	cmd.exe	37
PID 2816 wrote to memory of 2624	2816	cmd.exe	37
PID 2816 wrote to memory of 2624	2816	cmd.exe	37
PID 2816 wrote to memory of 2624	2816	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe
"C:\Users\Admin\AppData\Local\Temp\b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "calc" /tr '"C:\Users\Admin\AppData\Roaming\calc.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2560
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "calc" /tr '"C:\Users\Admin\AppData\Roaming\calc.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2608
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3572.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2716
- - C:\Users\Admin\AppData\Roaming\calc.exe
    "C:\Users\Admin\AppData\Roaming\calc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2624

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3572.tmp.bat

Filesize
148B

MD5
78d1b5b9c41d6f5218997456d264f695

SHA1
7e9ef405b8dfcc45f55cbfa737abecc999fefa7d

SHA256
07d43faef6f1b22d2bf23dfa697f6e21c1dfdc769338776ffe9094cf2b3043ff

SHA512
b37c655c785b9ed63908b793f7c40eae4ccc8f4a7d34e69cec0e8627f0ff39f3315c8620dcf3352cd844c563764f6572b373129ba0b113d7840b5d0f3b9fffdc

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
\Users\Admin\AppData\Roaming\calc.exe

Filesize
243KB

MD5
d88a06a393582a79ab6da48982ec87ae

SHA1
e5cc4271431fa138f4594847c20a5be3f6c919e4

SHA256
b037843ef212f9907c4c2f22167379db44aa02d7c647c53278b4d8d784343537

SHA512
41c75993633bf8d1f2dd9ab956ed40510a1d7678214a5311aed096c0e4678d6df57542908c4329f2424e9cb488f15cd554b06b151e909f7c70e4ce9d9a9191ac

Download Submit
memory/2624-21-0x0000000000230000-0x0000000000248000-memory.dmp

Filesize
96KB

Download
memory/2692-0-0x000000000041E000-0x0000000000420000-memory.dmp

Filesize
8KB

Download
memory/2692-1-0x00000000002C0000-0x00000000002D8000-memory.dmp

Filesize
96KB

Download
memory/2692-5-0x0000000000400000-0x000000000043F000-memory.dmp

Filesize
252KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads