asyncrat | 2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea

Analysis

max time kernel
134s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16-08-2024 15:38

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General

Target

Quotation PO 11109.pdf.exe
Size

589KB
MD5

d53fc47751fa8ad0b613c489aa779bda
SHA1

ec14fabb10b9aa9f05344c03802294e114bb2af1
SHA256

2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea
SHA512

b6441aeff786d23401267f23960410614a2686e3d10b6f58c5e9042d7c2f48a4975383f2ec05cfc801faa39a3bbb6bb58161b5ec248252c89ab9bf6ef382e326
SSDEEP

12288:ToQyRAMIgF72A0ybuxRN750J4iWoM7+EgLHpP3V5Ua:uHIgF7Wybexo4iWoM7oHpP3TR

Score

10^/10

asyncrat reed discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

REED

bmh-global.myfirewall.org:15153

Mutex

2bL4M7bieVyn

Attributes

delay
10
install
true
install_file
windows manger.exe
install_folder
%Temp%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat 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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	Quotation PO 11109.pdf.exe

Executes dropped EXE 2 IoCs

pid	Process
2528	windows manger.exe
1120	windows manger.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4808 set thread context of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 2528 set thread context of 1120	2528	windows manger.exe	113

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 8 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	Quotation PO 11109.pdf.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windows manger.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windows manger.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotation PO 11109.pdf.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4524	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
3640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe
4816	Quotation PO 11109.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4816	Quotation PO 11109.pdf.exe
Token: SeDebugPrivilege	1120	windows manger.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4808 wrote to memory of 4816	4808	Quotation PO 11109.pdf.exe	102
PID 4816 wrote to memory of 1060	4816	Quotation PO 11109.pdf.exe	103
PID 4816 wrote to memory of 1060	4816	Quotation PO 11109.pdf.exe	103
PID 4816 wrote to memory of 1060	4816	Quotation PO 11109.pdf.exe	103
PID 4816 wrote to memory of 2892	4816	Quotation PO 11109.pdf.exe	105
PID 4816 wrote to memory of 2892	4816	Quotation PO 11109.pdf.exe	105
PID 4816 wrote to memory of 2892	4816	Quotation PO 11109.pdf.exe	105
PID 2892 wrote to memory of 4524	2892	cmd.exe	107
PID 2892 wrote to memory of 4524	2892	cmd.exe	107
PID 2892 wrote to memory of 4524	2892	cmd.exe	107
PID 1060 wrote to memory of 3640	1060	cmd.exe	108
PID 1060 wrote to memory of 3640	1060	cmd.exe	108
PID 1060 wrote to memory of 3640	1060	cmd.exe	108
PID 2892 wrote to memory of 2528	2892	cmd.exe	109
PID 2892 wrote to memory of 2528	2892	cmd.exe	109
PID 2892 wrote to memory of 2528	2892	cmd.exe	109
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113
PID 2528 wrote to memory of 1120	2528	windows manger.exe	113

C:\Users\Admin\AppData\Local\Temp\Quotation PO 11109.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation PO 11109.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Users\Admin\AppData\Local\Temp\Quotation PO 11109.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation PO 11109.pdf.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4816
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows manger" /tr '"C:\Users\Admin\AppData\Local\Temp\windows manger.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1060
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "windows manger" /tr '"C:\Users\Admin\AppData\Local\Temp\windows manger.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:3640
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9CC8.tmp.bat""
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2892
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:4524
  - - C:\Users\Admin\AppData\Local\Temp\windows manger.exe
      "C:\Users\Admin\AppData\Local\Temp\windows manger.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2528
    - - C:\Users\Admin\AppData\Local\Temp\windows manger.exe
        
        "C:\Users\Admin\AppData\Local\Temp\windows manger.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:1120

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1036,i,4356837537417149674,16553092232944545509,262144 --variations-seed-version --mojo-platform-channel-handle=4100 /prefetch:8
1⤵
PID:1056

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

Query Registry

T1012

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\Microsoft\CLR_v4.0_32\UsageLogs\Quotation PO 11109.pdf.exe.log

Filesize
1KB

MD5
7cad59aef5a93f093b6ba494f13f796f

SHA1
3cef97b77939bfc06dfd3946fc1a8cd159f67100

SHA256
1e1b444fe2d8772f6709b22b94bb5b0aa7fa590f6a693705d9bf1f2f71267a55

SHA512
8cedd03efec34c6226a01fd6b4831a689be16545ea6b849cd96f775e0722bfefd4b47f3dd8401d2080d341d4319f75995ece60de44352a1f86a2e5dc01e6210b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9CC8.tmp.bat

Filesize
161B

MD5
75a0f2f7b22359e011947a0ed8649418

SHA1
36ae5e08ce0c799665c5fabd62535c182bfa17d3

SHA256
7415e73a6e7b337465998e03ed7136e58257e884172b280f6bcec2e0d6af34f6

SHA512
7dd9b32d9cfc4ce78aa6623372c008d743b20dd1ca930e228acb61cbc6e42a0851e9c480d8f261b933661619bed93ae35598f45dd6677be886a1e0144ae0be3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\windows manger.exe

Filesize
589KB

MD5
d53fc47751fa8ad0b613c489aa779bda

SHA1
ec14fabb10b9aa9f05344c03802294e114bb2af1

SHA256
2328201990de5c77c0353c61e628c68a01aaef1d4566ef9816a1f0333562c5ea

SHA512
b6441aeff786d23401267f23960410614a2686e3d10b6f58c5e9042d7c2f48a4975383f2ec05cfc801faa39a3bbb6bb58161b5ec248252c89ab9bf6ef382e326

Download Submit
memory/2528-30-0x0000000005710000-0x0000000005726000-memory.dmp

Filesize
88KB

Download
memory/2528-29-0x0000000005EF0000-0x0000000006244000-memory.dmp

Filesize
3.3MB

Download
memory/4808-12-0x00000000099F0000-0x0000000009A44000-memory.dmp

Filesize
336KB

Download
memory/4808-5-0x00000000057B0000-0x00000000057BA000-memory.dmp

Filesize
40KB

Download
memory/4808-7-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4808-8-0x0000000007560000-0x000000000757E000-memory.dmp

Filesize
120KB

Download
memory/4808-9-0x000000007512E000-0x000000007512F000-memory.dmp

Filesize
4KB

Download
memory/4808-10-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4808-11-0x0000000005A50000-0x0000000005A66000-memory.dmp

Filesize
88KB

Download
memory/4808-0-0x000000007512E000-0x000000007512F000-memory.dmp

Filesize
4KB

Download
memory/4808-1-0x0000000000D20000-0x0000000000DB8000-memory.dmp

Filesize
608KB

Download
memory/4808-6-0x00000000063F0000-0x000000000648C000-memory.dmp

Filesize
624KB

Download
memory/4808-2-0x0000000005E40000-0x00000000063E4000-memory.dmp

Filesize
5.6MB

Download
memory/4808-17-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4808-3-0x00000000057E0000-0x0000000005872000-memory.dmp

Filesize
584KB

Download
memory/4808-4-0x0000000005A70000-0x0000000005DC4000-memory.dmp

Filesize
3.3MB

Download
memory/4816-20-0x0000000005840000-0x00000000058A6000-memory.dmp

Filesize
408KB

Download
memory/4816-24-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4816-19-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4816-18-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4816-16-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4816-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download