asyncrat | caf642fb3b0b025f018be00082dfc2c068a57c75fb0f1efa63e04b9ab0f4e654

Resubmissions

12-07-2024 05:11

240712-fvphlascrf 10

Analysis

max time kernel
38s
max time network
39s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
12-07-2024 05:11

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General

Target

updater.exe
Size

58KB
MD5

ee5b9ebce290a31f433d2f0a7c0a68c7
SHA1

bf43d58541c0414d688c32a3e5ad6e26adb61139
SHA256

caf642fb3b0b025f018be00082dfc2c068a57c75fb0f1efa63e04b9ab0f4e654
SHA512

36aa1ca70e064dd78b0722e6510c79d8d5896c2986edd53323d3776d37c46a14a359f2292009218c5e9efb4aef3b4a71198da1298197d5c4509415d32f5a695b
SSDEEP

1536:muyCNTAGL2JXJd6KmbU42bSaNTAnrq4dY90+Yp:muyeTAGL2JXJQKmI42bSFnrq4n+Yp

Score

10^/10

asyncrat niggers rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Niggers

Mutex

bSO9sTEW154P

Attributes

delay
5
install
true
install_file
updater.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/Hbm5qNCB

aes.plain

Signatures

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/0x00080000000120f9-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2596	updater.exe

Loads dropped DLL 1 IoCs

pid	Process
2740	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

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
2900	timeout.exe
2020	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
2860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1952	updater.exe
1952	updater.exe
1952	updater.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1952	updater.exe
Token: SeDebugPrivilege	2596	updater.exe
Token: SeDebugPrivilege	2596	updater.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 2236	1952	updater.exe	31
PID 1952 wrote to memory of 2236	1952	updater.exe	31
PID 1952 wrote to memory of 2236	1952	updater.exe	31
PID 1952 wrote to memory of 2236	1952	updater.exe	31
PID 1952 wrote to memory of 2740	1952	updater.exe	33
PID 1952 wrote to memory of 2740	1952	updater.exe	33
PID 1952 wrote to memory of 2740	1952	updater.exe	33
PID 1952 wrote to memory of 2740	1952	updater.exe	33
PID 2236 wrote to memory of 2860	2236	cmd.exe	35
PID 2236 wrote to memory of 2860	2236	cmd.exe	35
PID 2236 wrote to memory of 2860	2236	cmd.exe	35
PID 2236 wrote to memory of 2860	2236	cmd.exe	35
PID 2740 wrote to memory of 2900	2740	cmd.exe	36
PID 2740 wrote to memory of 2900	2740	cmd.exe	36
PID 2740 wrote to memory of 2900	2740	cmd.exe	36
PID 2740 wrote to memory of 2900	2740	cmd.exe	36
PID 2740 wrote to memory of 2596	2740	cmd.exe	37
PID 2740 wrote to memory of 2596	2740	cmd.exe	37
PID 2740 wrote to memory of 2596	2740	cmd.exe	37
PID 2740 wrote to memory of 2596	2740	cmd.exe	37
PID 2740 wrote to memory of 2596	2740	cmd.exe	37
PID 2740 wrote to memory of 2596	2740	cmd.exe	37
PID 2740 wrote to memory of 2596	2740	cmd.exe	37
PID 2596 wrote to memory of 1528	2596	updater.exe	39
PID 2596 wrote to memory of 1528	2596	updater.exe	39
PID 2596 wrote to memory of 1528	2596	updater.exe	39
PID 2596 wrote to memory of 1528	2596	updater.exe	39
PID 2596 wrote to memory of 1584	2596	updater.exe	41
PID 2596 wrote to memory of 1584	2596	updater.exe	41
PID 2596 wrote to memory of 1584	2596	updater.exe	41
PID 2596 wrote to memory of 1584	2596	updater.exe	41
PID 1528 wrote to memory of 1556	1528	cmd.exe	43
PID 1528 wrote to memory of 1556	1528	cmd.exe	43
PID 1528 wrote to memory of 1556	1528	cmd.exe	43
PID 1528 wrote to memory of 1556	1528	cmd.exe	43
PID 1584 wrote to memory of 2020	1584	cmd.exe	44
PID 1584 wrote to memory of 2020	1584	cmd.exe	44
PID 1584 wrote to memory of 2020	1584	cmd.exe	44
PID 1584 wrote to memory of 2020	1584	cmd.exe	44

C:\Users\Admin\AppData\Local\Temp\updater.exe
"C:\Users\Admin\AppData\Local\Temp\updater.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "updater" /tr '"C:\Users\Admin\AppData\Roaming\updater.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2236
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "updater" /tr '"C:\Users\Admin\AppData\Roaming\updater.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2860
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB220.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2740
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2900
- - C:\Users\Admin\AppData\Roaming\updater.exe
    "C:\Users\Admin\AppData\Roaming\updater.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2596
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "updater"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1528
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /delete /f /tn "updater"
        5⤵
        
        PID:1556
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2850.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1584
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:2020

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabE2F2.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar2773.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2850.tmp.bat

Filesize
156B

MD5
3d1dab840c3c306527843056c651b09e

SHA1
0afb2769e74ea4271f23d6a45a0fd204cff75228

SHA256
244a13dbcf4466c2e5a4824eb5f1686442184555f6ab9cefe376f5bca1c7dbdb

SHA512
a63d8076f2da9fe75079914892d8ae21302e6e8f10abb985df6d9cdf53912670ce441f90756defa60860b909c584a0edc3d5298c3714e695dff8c99aa6ebe354

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB220.tmp.bat

Filesize
151B

MD5
d4dab85f6f422c5e047dca6bd2276699

SHA1
4118c49bc382d12e71e79cdb4b6be1ae0eadc01a

SHA256
5bde00ba7719c20c5432f00c68052ff507051f8a6521ff830596d2d210a78b3e

SHA512
082eaf05f327ea6b0e3a93e31429898035a07233e662afe7ebdf1f92b99407430d401e032adf5d1713fc30a66d446cd05a61c835033c0d05ed299b9a71cd150f

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

Filesize
58KB

MD5
ee5b9ebce290a31f433d2f0a7c0a68c7

SHA1
bf43d58541c0414d688c32a3e5ad6e26adb61139

SHA256
caf642fb3b0b025f018be00082dfc2c068a57c75fb0f1efa63e04b9ab0f4e654

SHA512
36aa1ca70e064dd78b0722e6510c79d8d5896c2986edd53323d3776d37c46a14a359f2292009218c5e9efb4aef3b4a71198da1298197d5c4509415d32f5a695b

Download Submit
memory/1952-0-0x000000007427E000-0x000000007427F000-memory.dmp

Filesize
4KB

Download
memory/1952-1-0x0000000000E70000-0x0000000000E84000-memory.dmp

Filesize
80KB

Download
memory/1952-2-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download
memory/1952-12-0x0000000074270000-0x000000007495E000-memory.dmp

Filesize
6.9MB

Download
memory/2596-16-0x0000000001010000-0x0000000001024000-memory.dmp

Filesize
80KB

Download
memory/2596-33-0x0000000005480000-0x00000000054E4000-memory.dmp

Filesize
400KB

Download