asyncrat | 9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 20:59

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General

Target

JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe
Size

300.0MB
MD5

09d3660e122050f7daeef7650eaf4d5f
SHA1

485b17fdead4fd0917266739f905593d8d82bb43
SHA256

9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997
SHA512

a6d83a17d34c3050e957bb4f9d0d672b0ea9c129377e0ed0409a75f8d73cb4ad7368f076a5b303805a6a734e3ad6098003b570de60702ef498d62880382452ec
SSDEEP

3145728:ex1MFn6eC4YVC4m5oih6p7UUUUUMMTeD9GGtg:Gm5osTj5

Score

10^/10

asyncrat feb-25-fri discovery rat

Malware Config

Extracted

Family

asyncrat

Version

VenomRAT 5.0.3

Botnet

FEB-25-FRI

feb23-pandor.duckdns.org:25045

Mutex

we4320fmef

Attributes

delay
0
install
false
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

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	filera.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	filera.exe

Executes dropped EXE 2 IoCs

pid	Process
724	filera.exe
2908	filera.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 372 set thread context of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 724 set thread context of 1012	724	filera.exe	102
PID 2908 set thread context of 4620	2908	filera.exe	109

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 15 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	filera.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.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	filera.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1252	schtasks.exe
2444	schtasks.exe
1336	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4840	RegAsm.exe
Token: SeDebugPrivilege	1012	RegAsm.exe
Token: SeDebugPrivilege	4620	RegAsm.exe

Suspicious use of WriteProcessMemory 51 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 2808	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	90
PID 372 wrote to memory of 2808	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	90
PID 372 wrote to memory of 2808	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	90
PID 372 wrote to memory of 4828	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	92
PID 372 wrote to memory of 4828	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	92
PID 372 wrote to memory of 4828	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	92
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 372 wrote to memory of 4840	372	JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe	94
PID 2808 wrote to memory of 1252	2808	cmd.exe	95
PID 2808 wrote to memory of 1252	2808	cmd.exe	95
PID 2808 wrote to memory of 1252	2808	cmd.exe	95
PID 724 wrote to memory of 3572	724	filera.exe	98
PID 724 wrote to memory of 3572	724	filera.exe	98
PID 724 wrote to memory of 3572	724	filera.exe	98
PID 724 wrote to memory of 4072	724	filera.exe	100
PID 724 wrote to memory of 4072	724	filera.exe	100
PID 724 wrote to memory of 4072	724	filera.exe	100
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 724 wrote to memory of 1012	724	filera.exe	102
PID 3572 wrote to memory of 2444	3572	cmd.exe	103
PID 3572 wrote to memory of 2444	3572	cmd.exe	103
PID 3572 wrote to memory of 2444	3572	cmd.exe	103
PID 2908 wrote to memory of 2716	2908	filera.exe	105
PID 2908 wrote to memory of 2716	2908	filera.exe	105
PID 2908 wrote to memory of 2716	2908	filera.exe	105
PID 2908 wrote to memory of 4760	2908	filera.exe	107
PID 2908 wrote to memory of 4760	2908	filera.exe	107
PID 2908 wrote to memory of 4760	2908	filera.exe	107
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2908 wrote to memory of 4620	2908	filera.exe	109
PID 2716 wrote to memory of 1336	2716	cmd.exe	110
PID 2716 wrote to memory of 1336	2716	cmd.exe	110
PID 2716 wrote to memory of 1336	2716	cmd.exe	110

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:372
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nadnasia" /tr "'C:\Users\Admin\AppData\Roaming\filera.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2808
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nadnasia" /tr "'C:\Users\Admin\AppData\Roaming\filera.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9a108a80f5b5b3894ff5fdd573b626fdce87e467814c769382b8d9ab6c7d6997.exe" "C:\Users\Admin\AppData\Roaming\filera.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4828
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4840

C:\Users\Admin\AppData\Roaming\filera.exe
C:\Users\Admin\AppData\Roaming\filera.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nadnasia" /tr "'C:\Users\Admin\AppData\Roaming\filera.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3572
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nadnasia" /tr "'C:\Users\Admin\AppData\Roaming\filera.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\filera.exe" "C:\Users\Admin\AppData\Roaming\filera.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4072
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1012

C:\Users\Admin\AppData\Roaming\filera.exe
C:\Users\Admin\AppData\Roaming\filera.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nadnasia" /tr "'C:\Users\Admin\AppData\Roaming\filera.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nadnasia" /tr "'C:\Users\Admin\AppData\Roaming\filera.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\filera.exe" "C:\Users\Admin\AppData\Roaming\filera.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4760
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RegAsm.exe.log

Filesize
425B

MD5
4eaca4566b22b01cd3bc115b9b0b2196

SHA1
e743e0792c19f71740416e7b3c061d9f1336bf94

SHA256
34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

SHA512
bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\filera.exe.log

Filesize
805B

MD5
4b74e933d78bd5e8fb1cc4653fb2133c

SHA1
f6e931eec700fa325bd40c3adc6f1c0eba806066

SHA256
fd99bed17853f5ad196ca6d4a62f5e2405fbdf5b98cbf45af8b7cef83e4bcec3

SHA512
b56ff89eff1a757a87dcb875206ae92d39ffdb5adf638600c21bc7c76ff4cc25502ae1060716488c7ed1641f8cdfad2a320443b7b4d9f09808eb86eb87f351ec

Download Submit
memory/372-6-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/372-3-0x0000000005950000-0x00000000059E2000-memory.dmp

Filesize
584KB

Download
memory/372-4-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/372-5-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/372-0-0x00000000750CE000-0x00000000750CF000-memory.dmp

Filesize
4KB

Download
memory/372-7-0x0000000005CA0000-0x0000000005CBA000-memory.dmp

Filesize
104KB

Download
memory/372-13-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/372-2-0x0000000005E10000-0x00000000063B4000-memory.dmp

Filesize
5.6MB

Download
memory/372-1-0x0000000000D70000-0x0000000000E56000-memory.dmp

Filesize
920KB

Download
memory/4840-12-0x0000000000730000-0x0000000000746000-memory.dmp

Filesize
88KB

Download
memory/4840-15-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/4840-14-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download
memory/4840-16-0x00000000750C0000-0x0000000075870000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads