asyncrat | d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8

General

Target
d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
Size 45KB
Sample260702-s92spahs2t
SHA256 d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8
MD5 7e449e31f832de950802ef0e2b13ea9a
SHA1 fa5b87c6fdab653e5b496f9b2a01de34714f21ed
SHA512 acb07e694dd387f2e865d07dc82bfa0f99ec3ea606f1ef2d332d345793876c2798d953fa18d64b9f3d5ae189c870db57e8bb4aeb6d854f92f883000a8e0bf972
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVJpt0CCM+d4CvS8PIkXjbSgX3iusG4xUXnOU2iyB7G:MuBGJTPho2Q/CFWBkzbVXS+4xUXShdEx
TLSH
T1AD233B0037D8C12BF2BE4B78A9F26145867AF5737603D64E1CC451DB5B23FC68A42AE9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

vida-nova-design.com:80
vida-nova-design.com:22
vida-nova-design.com:8080
vida-nova-design.com:8880
vida-nova-design.com:2052
vida-nova-design.com:2082
vida-nova-design.com:2086
vida-nova-design.com:2095
vida-nova-design.com:443
vida-nova-design.com:2053
vida-nova-design.com:2083
vida-nova-design.com:2087
vida-nova-design.com:2096
vida-nova-design.com:8443
www.vida-nova-design.com:80
www.vida-nova-design.com:22
www.vida-nova-design.com:8080
www.vida-nova-design.com:8880
www.vida-nova-design.com:2052
www.vida-nova-design.com:2082
www.vida-nova-design.com:2086
www.vida-nova-design.com:2095
www.vida-nova-design.com:443
www.vida-nova-design.com:2053
www.vida-nova-design.com:2083
www.vida-nova-design.com:2087
www.vida-nova-design.com:2096
www.vida-nova-design.com:8443
malware.vida-nova-design.com:80
malware.vida-nova-design.com:22
malware.vida-nova-design.com:8080
malware.vida-nova-design.com:8880
malware.vida-nova-design.com:2052
malware.vida-nova-design.com:2082
malware.vida-nova-design.com:2086
malware.vida-nova-design.com:2095
malware.vida-nova-design.com:443
malware.vida-nova-design.com:2053
malware.vida-nova-design.com:2083
malware.vida-nova-design.com:2087
malware.vida-nova-design.com:2096
malware.vida-nova-design.com:8443

Mutex

6Lvq2mTFm7GR

Attributes

delay
0
install
true
install_file
w2mb.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000300000001e6de-8.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 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-1-5-21-1788976790-1541110888-1636651838-1000\Control Panel\International\Geo\Nation	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe

Executes dropped EXE 2 IoCs

pid	Process
1916	w2mb.exe
3808	w2mb.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 7 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	w2mb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	w2mb.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1492	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
3264	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
Token: SeDebugPrivilege	1916	w2mb.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2376	2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe	87
PID 2212 wrote to memory of 4360	2212	d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe	89
PID 2376 wrote to memory of 3264	2376	cmd.exe	91
PID 4360 wrote to memory of 1492	4360	cmd.exe	92
PID 4360 wrote to memory of 3808	4360	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe
"C:\Users\Admin\AppData\Local\Temp\d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "w2mb" /tr '"C:\Users\Admin\AppData\Roaming\w2mb.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2376
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "w2mb" /tr '"C:\Users\Admin\AppData\Roaming\w2mb.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3264
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp529F.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4360
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1492
- - C:\Users\Admin\AppData\Roaming\w2mb.exe
    "C:\Users\Admin\AppData\Roaming\w2mb.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3808

C:\Users\Admin\AppData\Roaming\w2mb.exe
"C:\Users\Admin\AppData\Roaming\w2mb.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1916

Network

MITRE ATT&CK Enterprise v16

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

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp529F.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp529F.tmp.bat
Size 148B
SHA256 0dcea2e29a997ee76b614ce16457c4594408bc683d27be6cad595fec865a4ae1
MD5 7f0babc1e5ab3e855daf2766032bdf02
SHA1 ca34b9cc5d580a5d808602c5b685888888235973
SHA512 05595fb8953afcbafb68d6ab75f04b1f842fd06503146a4d4915e6761820269c19071fceaf0c10fe498697102c0873abbb8eca8107328d15e4dac88ee28158cb
TLSH
T18DC02B5751C6FA0E380A145303FADA8C91B26C2E3F80BB50C344450F128048AF8DD341
MD5 SHA1 SHA512 TLSH

Submit Download

w2mb.exe

Path C:\Users\Admin\AppData\Roaming\w2mb.exe
Size 45KB
SHA256 d9139f14adb853c8793f7067ae8f5bbf8d00e9382f7d4b33f9161d4b4053a3a8
MD5 7e449e31f832de950802ef0e2b13ea9a
SHA1 fa5b87c6fdab653e5b496f9b2a01de34714f21ed
SHA512 acb07e694dd387f2e865d07dc82bfa0f99ec3ea606f1ef2d332d345793876c2798d953fa18d64b9f3d5ae189c870db57e8bb4aeb6d854f92f883000a8e0bf972
SSDEEP 768:MuBGJTP0BQ0UWUWHaimo2qVJpt0CCM+d4CvS8PIkXjbSgX3iusG4xUXnOU2iyB7G:MuBGJTPho2Q/CFWBkzbVXS+4xUXShdEx
TLSH
T1AD233B0037D8C12BF2BE4B78A9F26145867AF5737603D64E1CC451DB5B23FC68A42AE9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1916-10-0x0000000002FA0000-0x0000000002FB0000-memory.dmp

Download

memory/1916-13-0x0000000002FA0000-0x0000000002FB0000-memory.dmp

Download

memory/2212-0-0x0000000000440000-0x0000000000452000-memory.dmp

Download

memory/2212-1-0x0000000002900000-0x0000000002910000-memory.dmp

Download

memory/2212-2-0x0000000004E70000-0x0000000004F0C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads