asyncrat | e8c8239e1c24546bdc63585199795cd83c07a7a4f00a9cf1bc705035198d2934

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
07-08-2024 02:22

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General

Target

ABA NEW ORDER No.2400228341.pdf.exe
Size

2.1MB
MD5

d9d0ba1c1cc0dd9243f36fba8b1147ad
SHA1

eae15f17ee26ede826b934733e16762cd61c89fa
SHA256

37f7dc1e5403ed4babd766ca88445f0c0fd555af19a5b669123660c262cc3f58
SHA512

304503d20998426c25f8f12ff9907831e0184b5ac911a0ce45addec385cac82dc070a56ad8630b404a41023fb56140dda9498d8f1a659a77df2b944ebb6da6b9
SSDEEP

6144:2TrjyPf1/pNLbtbTvspnI5p3YCmMuHrXOrfE8HiTAnnQUoJwS4LY5qhR:2TWBnjspnIb//XT7EAQPn4LJD

Score

10^/10

asyncrat 2money discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

2MONEY

twart.myfirewall.org:14143

Mutex

FEjYSsXzhpZixwA

Attributes

delay
20
install
true
install_file
svchost.exe
install_folder
%Temp%

aes.plain

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
2304	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2648	cmd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1908 set thread context of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31

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 6 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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2408	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
3048	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2360	regasm.exe
2360	regasm.exe
2360	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2360	regasm.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2360	1908	ABA NEW ORDER No.2400228341.pdf.exe	31
PID 1908 wrote to memory of 2052	1908	ABA NEW ORDER No.2400228341.pdf.exe	32
PID 1908 wrote to memory of 2052	1908	ABA NEW ORDER No.2400228341.pdf.exe	32
PID 1908 wrote to memory of 2052	1908	ABA NEW ORDER No.2400228341.pdf.exe	32
PID 2360 wrote to memory of 2776	2360	regasm.exe	35
PID 2360 wrote to memory of 2776	2360	regasm.exe	35
PID 2360 wrote to memory of 2776	2360	regasm.exe	35
PID 2360 wrote to memory of 2776	2360	regasm.exe	35
PID 2360 wrote to memory of 2648	2360	regasm.exe	37
PID 2360 wrote to memory of 2648	2360	regasm.exe	37
PID 2360 wrote to memory of 2648	2360	regasm.exe	37
PID 2360 wrote to memory of 2648	2360	regasm.exe	37
PID 2776 wrote to memory of 3048	2776	cmd.exe	39
PID 2776 wrote to memory of 3048	2776	cmd.exe	39
PID 2776 wrote to memory of 3048	2776	cmd.exe	39
PID 2776 wrote to memory of 3048	2776	cmd.exe	39
PID 2648 wrote to memory of 2408	2648	cmd.exe	40
PID 2648 wrote to memory of 2408	2648	cmd.exe	40
PID 2648 wrote to memory of 2408	2648	cmd.exe	40
PID 2648 wrote to memory of 2408	2648	cmd.exe	40
PID 2648 wrote to memory of 2304	2648	cmd.exe	41
PID 2648 wrote to memory of 2304	2648	cmd.exe	41
PID 2648 wrote to memory of 2304	2648	cmd.exe	41
PID 2648 wrote to memory of 2304	2648	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\ABA NEW ORDER No.2400228341.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\ABA NEW ORDER No.2400228341.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1908
- 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 behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Local\Temp\svchost.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2776
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Local\Temp\svchost.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3048
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1304.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2648
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2408
  - - C:\Users\Admin\AppData\Local\Temp\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:2304
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1908 -s 616
  2⤵
  PID:2052

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

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\Temp\tmp1304.tmp.bat

Filesize
154B

MD5
5ca417fe3f5e17edafc9988c524a7e30

SHA1
19d2ad3b783a71db06836e6a1fd87454b85b4921

SHA256
b92be8d13c6ff9ec088de5142370245164395d38765031c24938310afcaca28b

SHA512
0e4cb5f1a6da7237ef4639fde8e65dcf36238cd31b1affc8772b3c67d60ad4cce443600933aa8f169fb3768840d2e35916f7664229d33668cbed1efd9c9cd56a

Download Submit
\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
63KB

MD5
b58b926c3574d28d5b7fdd2ca3ec30d5

SHA1
d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

SHA256
6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

SHA512
b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

Download Submit
memory/1908-17-0x000007FEF5943000-0x000007FEF5944000-memory.dmp

Filesize
4KB

Download
memory/1908-1-0x00000000008E0000-0x00000000008EC000-memory.dmp

Filesize
48KB

Download
memory/1908-2-0x0000000000020000-0x0000000000026000-memory.dmp

Filesize
24KB

Download
memory/1908-3-0x000007FEF5940000-0x000007FEF632C000-memory.dmp

Filesize
9.9MB

Download
memory/1908-4-0x0000000000640000-0x00000000006A6000-memory.dmp

Filesize
408KB

Download
memory/1908-27-0x000007FEF5940000-0x000007FEF632C000-memory.dmp

Filesize
9.9MB

Download
memory/1908-0-0x000007FEF5943000-0x000007FEF5944000-memory.dmp

Filesize
4KB

Download
memory/2304-31-0x0000000001390000-0x00000000013A2000-memory.dmp

Filesize
72KB

Download
memory/2360-9-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-7-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2360-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2360-5-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

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