asyncrat | a2026da11259eef54d6162eafef538d915895fcd42d42dae5d0c65c975c07145

General

Target

Infected.exe
Size

63KB
MD5

c8b877cb0d39bd95d7069f5b4c23612a
SHA1

5fb64bfb87b525c12d424baeb3128ddcde85a4de
SHA256

a2026da11259eef54d6162eafef538d915895fcd42d42dae5d0c65c975c07145
SHA512

0b1fb239a7eaad73e9d965e5ffa9b8ad0ebf44e5e799ffb0570eafa4c4895d936619321bf577d89ff6c31b338854d667fafc8317bfea40c7f9a7d6fe397bcab0
SSDEEP

768:tYtz5i7QHEU78j8C8A+Xi+azcBRL5JTk1+T4KSBGHmDbD/ph0oXcpBSuZCdpqKYC:tGIgE8ddSJYUbdh9XuZCdpqKmY7

Score

10^/10

asyncrat default rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

consumer-cms.gl.at.ply.gg:2155

Attributes

delay
1
install
true
install_file
SteamWebHelper.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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\SteamWebHelper.exe	family_asyncrat

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

Infected.exeSteamWebHelper.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Infected.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	SteamWebHelper.exe

Executes dropped EXE 1 IoCs

Processes:

SteamWebHelper.exe

pid process

3500 SteamWebHelper.exe
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

228 timeout.exe
4648 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

Processes:

schtasks.exe

pid process

184 schtasks.exe

pid	process
3500	SteamWebHelper.exe

pid	process
228	timeout.exe
4648	timeout.exe

pid	process
184	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Infected.exeSteamWebHelper.exe

pid	process
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
2640	Infected.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe
3500	SteamWebHelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Infected.exeSteamWebHelper.exe

description pid process

Token: SeDebugPrivilege 2640 Infected.exe
Token: SeDebugPrivilege 3500 SteamWebHelper.exe

description	pid	process
Token: SeDebugPrivilege	2640	Infected.exe
Token: SeDebugPrivilege	3500	SteamWebHelper.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Infected.execmd.execmd.exeSteamWebHelper.execmd.execmd.exe

description	pid	process	target process
PID 2640 wrote to memory of 2940	2640	Infected.exe	cmd.exe
PID 2640 wrote to memory of 2940	2640	Infected.exe	cmd.exe
PID 2640 wrote to memory of 2740	2640	Infected.exe	cmd.exe
PID 2640 wrote to memory of 2740	2640	Infected.exe	cmd.exe
PID 2940 wrote to memory of 184	2940	cmd.exe	schtasks.exe
PID 2940 wrote to memory of 184	2940	cmd.exe	schtasks.exe
PID 2740 wrote to memory of 228	2740	cmd.exe	timeout.exe
PID 2740 wrote to memory of 228	2740	cmd.exe	timeout.exe
PID 2740 wrote to memory of 3500	2740	cmd.exe	SteamWebHelper.exe
PID 2740 wrote to memory of 3500	2740	cmd.exe	SteamWebHelper.exe
PID 3500 wrote to memory of 2196	3500	SteamWebHelper.exe	cmd.exe
PID 3500 wrote to memory of 2196	3500	SteamWebHelper.exe	cmd.exe
PID 3500 wrote to memory of 1368	3500	SteamWebHelper.exe	cmd.exe
PID 3500 wrote to memory of 1368	3500	SteamWebHelper.exe	cmd.exe
PID 1368 wrote to memory of 4648	1368	cmd.exe	timeout.exe
PID 1368 wrote to memory of 4648	1368	cmd.exe	timeout.exe
PID 2196 wrote to memory of 1968	2196	cmd.exe	schtasks.exe
PID 2196 wrote to memory of 1968	2196	cmd.exe	schtasks.exe

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\Infected.exe
"C:\Users\Admin\AppData\Local\Temp\Infected.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "SteamWebHelper" /tr '"C:\Users\Admin\AppData\Roaming\SteamWebHelper.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2940
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "SteamWebHelper" /tr '"C:\Users\Admin\AppData\Roaming\SteamWebHelper.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:184
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9182.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2740
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:228
- - C:\Users\Admin\AppData\Roaming\SteamWebHelper.exe
    "C:\Users\Admin\AppData\Roaming\SteamWebHelper.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3500
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "SteamWebHelper"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2196
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /delete /f /tn "SteamWebHelper"
        5⤵
        
        PID:1968
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1BAC.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1368
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:4648

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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1BAC.tmp.bat

Filesize
163B

MD5
d097643a3709bec458b77adf8a821f23

SHA1
49bfb42a061cf26dc6faa299f07aa4214c24f3db

SHA256
7941ab053d3073a87644431c41e5d0053a959a6c0e3112b33546fef5cfc4d5e6

SHA512
e4520f8d2b6cbf0845705df54e7b5fd2e6cb562d9ff3f555af4feaa8b84300061910ffe967952792bdebda2d8813aeefe4837e3670e603ccdf0455b7d1d45800

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9182.tmp.bat

Filesize
158B

MD5
58f60d5cd21b7bc8194e3a6d36dd0001

SHA1
d378cffa27e70b9a76676904d1cd097d3528f7dc

SHA256
e39a2d9c2c34367702d8f357551f67b5b574ec2f0a1896dd6031bf446e8c6fb5

SHA512
e2d24f737395cf19dacda22b87902b26d6881a2ab93a8b1e3f86b6888ec840cab80a9f378a90e192fa1164b3607aedda5c5eecd658a13cc58ab07c8cba0965ea

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

Filesize
63KB

MD5
c8b877cb0d39bd95d7069f5b4c23612a

SHA1
5fb64bfb87b525c12d424baeb3128ddcde85a4de

SHA256
a2026da11259eef54d6162eafef538d915895fcd42d42dae5d0c65c975c07145

SHA512
0b1fb239a7eaad73e9d965e5ffa9b8ad0ebf44e5e799ffb0570eafa4c4895d936619321bf577d89ff6c31b338854d667fafc8317bfea40c7f9a7d6fe397bcab0

Download Submit
memory/2640-7-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/2640-8-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/2640-1-0x0000000000BB0000-0x0000000000BC6000-memory.dmp

Filesize
88KB

Download
memory/2640-2-0x00007FFD78110000-0x00007FFD78BD1000-memory.dmp

Filesize
10.8MB

Download
memory/2640-0-0x00007FFD78113000-0x00007FFD78115000-memory.dmp

Filesize
8KB

Download
memory/3500-15-0x000000001CFB0000-0x000000001D026000-memory.dmp

Filesize
472KB

Download
memory/3500-16-0x000000001ACD0000-0x000000001AD02000-memory.dmp

Filesize
200KB

Download
memory/3500-17-0x000000001AD00000-0x000000001AD1E000-memory.dmp

Filesize
120KB

Download
memory/3500-18-0x000000001E5C0000-0x000000001E614000-memory.dmp

Filesize
336KB

Download
memory/3500-19-0x000000001E5B0000-0x000000001E5C0000-memory.dmp

Filesize
64KB

Download
memory/3500-20-0x0000000000930000-0x0000000000994000-memory.dmp

Filesize
400KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads