asyncrat | 37ae7583ac0a01843a6951421f3c1f5743d6b5c937c6b0c6d08552e27a40048b

Analysis

max time kernel
68s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2025, 19:44

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General

Target
XPR_Offensive Version2020 Update2/BlueEagleXPR.exe
Size 4.3MB
Sample250127-yf4m3ssrev
SHA256 a575e60cb9bfe0ce25567779ffd942cea73bb023b84a38d26fb930ab2bc64d7a
MD5 c4902cfc4c2ea6d2b3e4f385ae3cd1f6
SHA1 b9848b5eb85018801d690ddc7b264b07e89c52f4
SHA512 e642d4a68127b6a135c4bb0048a7208bf5e75e7f0a0bb2247b65238f78845f4c9c44ddc2729ba95486c5e88f7cfcd9359940b1d058cf33025621220d749523cf
SSDEEP 98304:rsT1KpK3AEv85NABo6bOeRU7ecKRQlJ1v0E+E78Gvzu1:Q4KwEvKQSeRU7eYLOEIGy
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat github discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

GitHub

127.0.0.1:650
127.0.0.1:10000
domain13.ddns.net:650
domain13.ddns.net:10000

Mutex

{76B6B781-3613-4A22-AE20-A66B9C12BB55}

Attributes

delay
1
install
true
install_file
svchost.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
behavioral4/files/0x0007000000023e21-13.dat	family_asyncrat

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2744	powershell.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	BlueEagleXPR.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	DCR.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\{C64E3C0C-3884-436D-9A18-C6801081CDF2}.lnk	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2916	1.36newl.exe
2476	DCR.exe
2064	BlueEagleXPR.exe
2624	svchost.exe

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 2 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	1.36newl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BlueEagleXPR.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3332	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
1592	schtasks.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
2744	powershell.exe
2744	powershell.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe
2476	DCR.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2064	BlueEagleXPR.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2916	1.36newl.exe
2916	1.36newl.exe
2916	1.36newl.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeDebugPrivilege	2476	DCR.exe
Token: SeDebugPrivilege	2624	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2064	BlueEagleXPR.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3112 wrote to memory of 2916	3112	BlueEagleXPR.exe	84
PID 3112 wrote to memory of 2916	3112	BlueEagleXPR.exe	84
PID 3112 wrote to memory of 2916	3112	BlueEagleXPR.exe	84
PID 3112 wrote to memory of 2476	3112	BlueEagleXPR.exe	85
PID 3112 wrote to memory of 2476	3112	BlueEagleXPR.exe	85
PID 2916 wrote to memory of 2544	2916	1.36newl.exe	86
PID 2916 wrote to memory of 2544	2916	1.36newl.exe	86
PID 2916 wrote to memory of 3832	2916	1.36newl.exe	89
PID 2916 wrote to memory of 3832	2916	1.36newl.exe	89
PID 3112 wrote to memory of 2064	3112	BlueEagleXPR.exe	87
PID 3112 wrote to memory of 2064	3112	BlueEagleXPR.exe	87
PID 3112 wrote to memory of 2064	3112	BlueEagleXPR.exe	87
PID 2544 wrote to memory of 2744	2544	cmd.exe	90
PID 2544 wrote to memory of 2744	2544	cmd.exe	90
PID 2476 wrote to memory of 4312	2476	DCR.exe	91
PID 2476 wrote to memory of 4312	2476	DCR.exe	91
PID 2476 wrote to memory of 4580	2476	DCR.exe	93
PID 2476 wrote to memory of 4580	2476	DCR.exe	93
PID 4312 wrote to memory of 1592	4312	cmd.exe	95
PID 4312 wrote to memory of 1592	4312	cmd.exe	95
PID 4580 wrote to memory of 3332	4580	cmd.exe	96
PID 4580 wrote to memory of 3332	4580	cmd.exe	96
PID 4580 wrote to memory of 2624	4580	cmd.exe	98
PID 4580 wrote to memory of 2624	4580	cmd.exe	98

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\XPR_Offensive Version2020 Update2\BlueEagleXPR.exe
"C:\Users\Admin\AppData\Local\Temp\XPR_Offensive Version2020 Update2\BlueEagleXPR.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3112
- C:\Users\Admin\AppData\Local\Temp\1.36newl.exe
  "C:\Users\Admin\AppData\Local\Temp\1.36newl.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\SYSTEM32\cmd.exe
    cmd.exe /c powershell.exe Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Win_log_Data\Folder1'
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2544
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Win_log_Data\Folder1'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2744
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    - Drops startup file
    PID:3832
- C:\Users\Admin\AppData\Local\Temp\DCR.exe
  "C:\Users\Admin\AppData\Local\Temp\DCR.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2476
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4312
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1592
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp94FC.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4580
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:3332
  - - C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:2624
- C:\Users\Admin\AppData\Local\Temp\BlueEagleXPR.exe
  "C:\Users\Admin\AppData\Local\Temp\BlueEagleXPR.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of FindShellTrayWindow
  PID:2064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

1.36newl.exe

Path C:\Users\Admin\AppData\Local\Temp\1.36newl.exe
Size 503KB
SHA256 aae8ec779c084ba4911f8a8ad409425bd8a12ec3b1300b703dbe6d04c0a6c835
MD5 7e3067bbd7db5801445cdf5d15e8fb2c
SHA1 b69f8ab65fa54dd6adc25294700770219c69a01f
SHA512 5fa05f8ac301f5cc2386e0efc07e1e18a5f9a8d0179474ba0a7129d6d99d444ba2caba5e7b2253ee472d93c4fbdc1dff66ab4d6dc43720b55e455bf2e7dcfa11
SSDEEP 6144:BRHP4vL3s5+CM6OW0nUBiwCCWfS34mbWMkRONOgbBpiEVBHl8ba2z7bSRBiL:BRHP63srM6AbCWfS34mSMkrCpPFBy
MD5 SHA1 SHA512 SSDEEP

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BlueEagleXPR.exe

Path C:\Users\Admin\AppData\Local\Temp\BlueEagleXPR.exe
Size 3.5MB
SHA256 e74c02f83666288c01a19550eee1b65dc239430937a9d0a6fe66bf00214260b4
MD5 80e3aad359566f5f10427722f2759658
SHA1 3b2b823296553ae1058135708d21c65805e2888c
SHA512 7893afea9514119a80b2872bde430254ac4621b867868f9907dd60418b25a79499d508e01020b16007f9a22e93404357b2e58c2049d502334dc41173ff0cb576
SSDEEP 49152:lCqvSyLA/1Sqhxr20oYBs/U1dMTi/y5DGi+ehgw5cotkgH5aXFcO1mGyMbA6q:8qqyw8qfipYBGK6l5LLse0R/M
MD5 SHA1 SHA512 SSDEEP

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DCR.exe

Path C:\Users\Admin\AppData\Local\Temp\DCR.exe
Size 47KB
SHA256 f564d475e501971f31b6c135313d6f7a01ec67b7ee8940426de0bf71bf6ec1b8
MD5 960ad3c9b4538926120d15cdd742a34d
SHA1 b3f306e088b3ec4557459f74297dad948b134f7c
SHA512 636af1ea3c266558959a2b3231c20c33d86fb628d4671771d53a6d5c4f52f3cd322b8f3462eaedb940c257f8b4fb870b3ba11ae7ce8e92d71884baa33955b4c8
SSDEEP 768:/mICljTILmCKi+DiW0fdjgLORp8Ao7ic7Yb4geZ4HobJVVmQb5qvEgK/JTZVc6KN:/mIYdmWKGLAeUbvOgcJVVmQbUnkJTZVS
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_2hjy3bor.hlb.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2hjy3bor.hlb.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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tmp94FC.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp94FC.tmp.bat
Size 151B
SHA256 19084df54d4c98463b7da247b1ae1a2a29dd5ce3fe2957ccacaf97f22c62ac9f
MD5 26f182fe7e2818ed5bcc662416562386
SHA1 942414851de0412ee297b5a1017f171533ad7520
SHA512 b13a9329418ee2c1d1cbd3ac7893cacf48db4d10a4bfaf92758a186da8b7de31fa66897e22473e21d9810526cbeaa6b0e0cbb5ed8e9b5263d7aed7501d5f8b62
MD5 SHA1 SHA512

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memory/2064-63-0x000000000BBD0000-0x000000000C174000-memory.dmp

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memory/2064-61-0x0000000007F20000-0x0000000008378000-memory.dmp

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memory/2064-73-0x0000000005CF0000-0x0000000005D46000-memory.dmp

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memory/2064-72-0x0000000005A30000-0x0000000005A3A000-memory.dmp

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memory/2064-64-0x000000000B6C0000-0x000000000B752000-memory.dmp

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memory/2064-47-0x0000000000DD0000-0x0000000001150000-memory.dmp

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memory/2064-62-0x000000000B480000-0x000000000B51C000-memory.dmp

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memory/2476-71-0x00007FF9A1C00000-0x00007FF9A26C1000-memory.dmp

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memory/2476-22-0x00007FF9A1C00000-0x00007FF9A26C1000-memory.dmp

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memory/2476-20-0x0000000000660000-0x0000000000672000-memory.dmp

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memory/2744-60-0x000002714A2C0000-0x000002714A2E2000-memory.dmp

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memory/3112-0-0x00007FF9A1C03000-0x00007FF9A1C05000-memory.dmp

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memory/3112-1-0x0000000000B70000-0x0000000000FBC000-memory.dmp

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memory/3832-50-0x0000000001000000-0x0000000001070000-memory.dmp

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memory/3832-49-0x0000000001000000-0x0000000001070000-memory.dmp

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memory/3832-35-0x0000000001000000-0x0000000001070000-memory.dmp

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memory/3832-44-0x0000000001000000-0x0000000001070000-memory.dmp

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memory/3832-43-0x0000000001000000-0x0000000001070000-memory.dmp

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memory/3832-31-0x0000000000970000-0x0000000000972000-memory.dmp

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