asyncrat | a2026da11259eef54d6162eafef538d915895fcd42d42dae5d0c65c975c07145

Analysis

max time kernel
65s
max time network
70s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
22-11-2024 05:57

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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

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

resource	yara_rule
behavioral1/files/0x0037000000018710-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2612	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

pid	Process
2548	timeout.exe
1972	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
2468	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1040	Infected.exe
1040	Infected.exe
1040	Infected.exe
1040	Infected.exe
1040	Infected.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe
2612	SteamWebHelper.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1040	Infected.exe
Token: SeDebugPrivilege	2612	SteamWebHelper.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 2876	1040	Infected.exe	30
PID 1040 wrote to memory of 2876	1040	Infected.exe	30
PID 1040 wrote to memory of 2876	1040	Infected.exe	30
PID 1040 wrote to memory of 3040	1040	Infected.exe	32
PID 1040 wrote to memory of 3040	1040	Infected.exe	32
PID 1040 wrote to memory of 3040	1040	Infected.exe	32
PID 3040 wrote to memory of 2548	3040	cmd.exe	34
PID 3040 wrote to memory of 2548	3040	cmd.exe	34
PID 3040 wrote to memory of 2548	3040	cmd.exe	34
PID 2876 wrote to memory of 2468	2876	cmd.exe	35
PID 2876 wrote to memory of 2468	2876	cmd.exe	35
PID 2876 wrote to memory of 2468	2876	cmd.exe	35
PID 3040 wrote to memory of 2612	3040	cmd.exe	36
PID 3040 wrote to memory of 2612	3040	cmd.exe	36
PID 3040 wrote to memory of 2612	3040	cmd.exe	36
PID 2612 wrote to memory of 2428	2612	SteamWebHelper.exe	37
PID 2612 wrote to memory of 2428	2612	SteamWebHelper.exe	37
PID 2612 wrote to memory of 2428	2612	SteamWebHelper.exe	37
PID 2612 wrote to memory of 2892	2612	SteamWebHelper.exe	39
PID 2612 wrote to memory of 2892	2612	SteamWebHelper.exe	39
PID 2612 wrote to memory of 2892	2612	SteamWebHelper.exe	39
PID 2428 wrote to memory of 2012	2428	cmd.exe	41
PID 2428 wrote to memory of 2012	2428	cmd.exe	41
PID 2428 wrote to memory of 2012	2428	cmd.exe	41
PID 2892 wrote to memory of 1972	2892	cmd.exe	42
PID 2892 wrote to memory of 1972	2892	cmd.exe	42
PID 2892 wrote to memory of 1972	2892	cmd.exe	42

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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1040
- 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:2876
- - 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:2468
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp76C5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2548
- - C:\Users\Admin\AppData\Roaming\SteamWebHelper.exe
    "C:\Users\Admin\AppData\Roaming\SteamWebHelper.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2612
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "SteamWebHelper"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2428
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /delete /f /tn "SteamWebHelper"
        5⤵
        
        PID:2012
  - - C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp620A.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2892
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:1972

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab911B.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp620A.tmp.bat

Filesize
163B

MD5
194683de3f285ad0be69c034e3545b2a

SHA1
b0fa08d8274795499f2ac52fd461e790018bb775

SHA256
ce4b4eb2bbca1e14f8df3fcd2af9b09f6539efded2e02f1346831b772d8bd9bc

SHA512
73fce77a3cb454e659e68436bd7f3a2b3cba3e04d73996dc645bfdbb144cc06cf08571eec2a285df289be675a86968d4805349589b94e6397cf520d52c999498

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp76C5.tmp.bat

Filesize
158B

MD5
aaa70a81d6f7a1130ab38b10b8e3c949

SHA1
5a2c1f85d8c82e3249d8ae57cac3684b38f3ad44

SHA256
903be6b96a67e0b83f38043aa2ecbb344121eb87d3fc2224883a19061d1d80c4

SHA512
d9f3f155b32ad3abee2bebc2f3191615f1ab82bee69d55e9d52240170713093e4b64a94037947afe7a48701f2cbbac8d0c69039adf0dca0e3b79bb3c0f0b48d3

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

Filesize
63KB

MD5
c8b877cb0d39bd95d7069f5b4c23612a

SHA1
5fb64bfb87b525c12d424baeb3128ddcde85a4de

SHA256
a2026da11259eef54d6162eafef538d915895fcd42d42dae5d0c65c975c07145

SHA512
0b1fb239a7eaad73e9d965e5ffa9b8ad0ebf44e5e799ffb0570eafa4c4895d936619321bf577d89ff6c31b338854d667fafc8317bfea40c7f9a7d6fe397bcab0

Download Submit
memory/1040-3-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/1040-12-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/1040-0-0x000007FEF64B3000-0x000007FEF64B4000-memory.dmp

Filesize
4KB

Download
memory/1040-2-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/1040-1-0x0000000000AD0000-0x0000000000AE6000-memory.dmp

Filesize
88KB

Download
memory/2612-17-0x0000000000AE0000-0x0000000000AF6000-memory.dmp

Filesize
88KB

Download
memory/2612-34-0x0000000000790000-0x00000000007E4000-memory.dmp

Filesize
336KB

Download
memory/2612-53-0x0000000000430000-0x0000000000440000-memory.dmp

Filesize
64KB

Download
memory/2612-54-0x00000000021B0000-0x0000000002214000-memory.dmp

Filesize
400KB

Download