asyncrat | eec8598a29a582b073df5c4832428cdd5cb276ea4cfb05a04e4de58a421717f8

Analysis

max time kernel
138s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 10:30

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General

Target

lossless scaling/Lossless Scaling.exe
Size

155KB
MD5

1e808d8b288c31d55e634bc603a430d6
SHA1

3093591b8bbc5afd41ba87462463bdd6c212b9c2
SHA256

c12832690c5c9e50e87718129836aa54dae18be18985aed6ad8fe8ddb94b0b43
SHA512

5ea49656e808859eb04a049f7f0617206e5b75e065dd8a15349a91cfe57fd94ca1906a1eedef802612c3e3b419257870d40e3c835e68ef0ca4150efdbe22660c
SSDEEP

3072:z/6p7RATueBb6sKGyLY1hhhhhhhhhhhhhhhhhhhhhhhOCD:z/6pWTuet1V1hhhhhhhhhhhhhhhhhhhX

Score

10^/10

asyncrat default discovery evasion execution rat trojan

Malware Config

Extracted

Family

asyncrat

Version

A 14

Botnet

Default

Egypt2.camdvr.org:301

Mutex

MaterxMutex_Egypt2

Attributes

delay
3
install
false
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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Lossless Scaling.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1280 set thread context of 2240	1280	powershell.exe	103

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
848	powershell.exe
1280	powershell.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 4 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	Lossless Scaling.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aspnet_compiler.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
3380	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2240	aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
848	powershell.exe
848	powershell.exe
2520	LosslessScaling.exe
2520	LosslessScaling.exe
1280	powershell.exe
1280	powershell.exe
2240	aspnet_compiler.exe
2520	LosslessScaling.exe
2520	LosslessScaling.exe
2520	LosslessScaling.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	848	powershell.exe
Token: SeDebugPrivilege	2520	LosslessScaling.exe
Token: SeDebugPrivilege	1280	powershell.exe
Token: SeDebugPrivilege	2240	aspnet_compiler.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2520	LosslessScaling.exe
2240	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 848	3944	Lossless Scaling.exe	83
PID 3944 wrote to memory of 848	3944	Lossless Scaling.exe	83
PID 3944 wrote to memory of 848	3944	Lossless Scaling.exe	83
PID 3944 wrote to memory of 2520	3944	Lossless Scaling.exe	85
PID 3944 wrote to memory of 2520	3944	Lossless Scaling.exe	85
PID 848 wrote to memory of 3380	848	powershell.exe	86
PID 848 wrote to memory of 3380	848	powershell.exe	86
PID 848 wrote to memory of 3380	848	powershell.exe	86
PID 4668 wrote to memory of 1280	4668	WScript.exe	101
PID 4668 wrote to memory of 1280	4668	WScript.exe	101
PID 1280 wrote to memory of 2240	1280	powershell.exe	103
PID 1280 wrote to memory of 2240	1280	powershell.exe	103
PID 1280 wrote to memory of 2240	1280	powershell.exe	103
PID 1280 wrote to memory of 2240	1280	powershell.exe	103
PID 1280 wrote to memory of 2240	1280	powershell.exe	103
PID 1280 wrote to memory of 2240	1280	powershell.exe	103
PID 1280 wrote to memory of 2240	1280	powershell.exe	103
PID 1280 wrote to memory of 2240	1280	powershell.exe	103

C:\Users\Admin\AppData\Local\Temp\lossless scaling\Lossless Scaling.exe
"C:\Users\Admin\AppData\Local\Temp\lossless scaling\Lossless Scaling.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Public\language\en-US\hiberfil.ps1"
  2⤵
  - UAC bypass
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:848
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /create /tn administartor /SC minute /MO 2 /tr C:\Users\Public\IObitUnlocker\Loader.vbs /RL HIGHEST
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3380
- C:\Users\Admin\AppData\Local\Temp\lossless scaling\language\uk-UA\LosslessScaling.exe
  "C:\Users\Admin\AppData\Local\Temp\lossless scaling\language\uk-UA\LosslessScaling.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2520

C:\Windows\System32\WScript.exe
C:\Windows\System32\WScript.exe "C:\Users\Public\IObitUnlocker\Loader.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4668
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass iex([IO.File]::ReadAllText('C:\Users\Public\IObitUnlocker\Report.ps1'))
  2⤵
  - Suspicious use of SetThreadContext
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2240

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

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Lossless Scaling\Settings.xml

Filesize
2KB

MD5
45fed0a3bcbc889ca99d0c5943210e7e

SHA1
602584366a413cb9ae459b6c3231190cd787241e

SHA256
9812fe8104a86e693d6baa02a4cdb56ea9a4aedb500b050346eb5ec6bda8dd09

SHA512
d0728fcce9484daedb2c9552ee2a818f7cccbeb1e9bca24a1c4fc1ca6e8c181c46cdc89670bfee3d6ad219ea6f69750bd03f776af4f9e4667872c66c11dbd255

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
19KB

MD5
4a6a0fcadbda7a846269509609529f56

SHA1
7c862fda82aef4717f27483c0ef0acc9568d839e

SHA256
0e0318cb0f1929a8d264648d32b5d8b01f73aa21a78edd97c6136b4d3c1e1e39

SHA512
a448d16d276b1b3a50e4ecdf315500c915c39a0492cbea6ceb0fc78e6a2542bcc4b4df13f310e4f7923b39cf8c943db7ea61548a23b324b46e29428020d2dccd

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yeq2ntcw.k5e.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Public\IObitUnlocker\IObitUnlocker.dll

Filesize
71KB

MD5
e1a4327af3cd8ca866996f472f0ff93a

SHA1
cfea8426ef8fab4136055401152821a19f908d45

SHA256
5f0bc7d75f32981e0e704c2217ed423c9a355f19515a1603103cc55cf9d3b901

SHA512
745f1ec495869d2fa2722ecadcaa27ec1f005742c69110802e9e1d7600d680d077e9762a400799e38003a4671a2590ecf1c480c2e7586039ebcce6ed36662280

Download Submit
C:\Users\Public\IObitUnlocker\IObitUnlocker.exe

Filesize
2.3MB

MD5
9303575597168ef11790500b29279f56

SHA1
bfab0ea30c5959fda893b9ddc6a348a4f47f8677

SHA256
0a507a553010c19369f17b649c5ffe6060216480059062ff75241944cf729bd7

SHA512
8e9f7a98c0a0c90643403d4abccd8736d12ba6bef83679ccfd626e52e86ed7db6fe558c6ec48a88cf32967c00d66131f550ac64cc98cd73fd477f165694e68b0

Download Submit
C:\Users\Public\IObitUnlocker\IObitUnlocker.sys

Filesize
65KB

MD5
47aa03a10ac3a407f8f30f1088edcbc9

SHA1
b5d78a1d3ae93bd343c6d65e64c0945d1d558758

SHA256
c79a2bb050af6436b10b58ef04dbc7082df1513cec5934432004eb56fba05e66

SHA512
3402ca68b00ffd9e2551f97b3895990ee0274f14f117505c3588ea76c716488860ac2da07c1d9275bbc43eb87b88893c52fb04d15f1afe7b7bf7d9a524961101

Download Submit
C:\Users\Public\IObitUnlocker\Loader.vbs

Filesize
155B

MD5
3781eced7bdb501738a60e3f926ae42a

SHA1
c65ca3f8ee5fd4f6dad689cc43bde301a451ec2c

SHA256
b343abd677e362c3ae1e573bf7c43bf476a8e97e67d7758328a51f30daaf4d95

SHA512
854dc0f2b8d2d4bcb7bb736d2a9c7f70132d069aedffb0e0952fa2d3d57992ae8cda02ea49214f40f4a05b30ac6fea145901fe6c72f257b43c461be138ce6971

Download Submit
C:\Users\Public\IObitUnlocker\Report.ps1

Filesize
457KB

MD5
40e7960be05c7c1f64d7157235171ce6

SHA1
79df02a409ba3721415e3d2755e467c10f9c698e

SHA256
5db5a2e88209a2e2901c8e9e74ad794be31c035a583ec62e73b5e8e22d5df0f0

SHA512
6801ed81e4c87b1328906befb506d598ea3eeaec3a835744b3a681104efca02d92db5228189b9859741a380ec54fdf98048f37d690396cfb9b2a7cabe487e2e9

Download Submit
C:\Users\Public\language\en-US\hiberfil.ps1

Filesize
1KB

MD5
98a99e831c54087770d3fd89f2bb9913

SHA1
26754b638106f4e2c3bdff6780c574384a129972

SHA256
92360a7d4d9bc840a967a86f6bd3651d0d7fb5218d57e3edcd36ad897f908a44

SHA512
cae5a9b95ac842902166cf2d67114f311f6bd9227999654f733b2ef16e4daf8fa2ea5fb5908425243226217fe99e87ded7f9d600a2eb668fb3b4f7d4b0974df2

Download Submit
C:\Users\Public\language\en-US\pagefile.sys

Filesize
1.7MB

MD5
df3362c56b3925e0eb83e0a10fb448c7

SHA1
7b82a4de6af8f15994cfa1f179ebf5e0f302e503

SHA256
1de06a9918cdd9e8dd95953f1a6b937d490a6eb228b2a67e5a89b09feab810c3

SHA512
431dbbf045c8a62cacd7e8236ad343287c574b97684d941fe6f94e702fbb2a19675e1849220fa443616bfe2adec0e2218c42d75889333ca489f064e931891785

Download Submit
memory/848-63-0x0000000074EC0000-0x0000000074F0C000-memory.dmp

Filesize
304KB

Download
memory/848-89-0x00000000084E0000-0x000000000857C000-memory.dmp

Filesize
624KB

Download
memory/848-25-0x0000000005EE0000-0x0000000006234000-memory.dmp

Filesize
3.3MB

Download
memory/848-121-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/848-8-0x0000000002F00000-0x0000000002F36000-memory.dmp

Filesize
216KB

Download
memory/848-29-0x00000000064E0000-0x00000000064FE000-memory.dmp

Filesize
120KB

Download
memory/848-30-0x0000000006510000-0x000000000655C000-memory.dmp

Filesize
304KB

Download
memory/848-10-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/848-9-0x00000000055E0000-0x0000000005C08000-memory.dmp

Filesize
6.2MB

Download
memory/848-12-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/848-90-0x0000000008580000-0x00000000086AC000-memory.dmp

Filesize
1.2MB

Download
memory/848-15-0x0000000005E70000-0x0000000005ED6000-memory.dmp

Filesize
408KB

Download
memory/848-14-0x0000000005E00000-0x0000000005E66000-memory.dmp

Filesize
408KB

Download
memory/848-88-0x0000000008240000-0x0000000008406000-memory.dmp

Filesize
1.8MB

Download
memory/848-13-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/848-84-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/848-83-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/848-44-0x0000000006A50000-0x0000000006A72000-memory.dmp

Filesize
136KB

Download
memory/848-43-0x0000000006A00000-0x0000000006A1A000-memory.dmp

Filesize
104KB

Download
memory/848-42-0x0000000007490000-0x0000000007526000-memory.dmp

Filesize
600KB

Download
memory/848-82-0x0000000007B30000-0x0000000007B38000-memory.dmp

Filesize
32KB

Download
memory/848-11-0x0000000005420000-0x0000000005442000-memory.dmp

Filesize
136KB

Download
memory/848-81-0x0000000008240000-0x000000000825A000-memory.dmp

Filesize
104KB

Download
memory/848-64-0x0000000070410000-0x0000000070764000-memory.dmp

Filesize
3.3MB

Download
memory/848-74-0x00000000078E0000-0x00000000078FE000-memory.dmp

Filesize
120KB

Download
memory/848-62-0x00000000078A0000-0x00000000078D2000-memory.dmp

Filesize
200KB

Download
memory/848-75-0x0000000007910000-0x00000000079B3000-memory.dmp

Filesize
652KB

Download
memory/848-76-0x0000000008780000-0x0000000008DFA000-memory.dmp

Filesize
6.5MB

Download
memory/848-77-0x0000000007A90000-0x0000000007A9A000-memory.dmp

Filesize
40KB

Download
memory/848-78-0x0000000007AA0000-0x0000000007AB1000-memory.dmp

Filesize
68KB

Download
memory/848-79-0x0000000007AF0000-0x0000000007AFE000-memory.dmp

Filesize
56KB

Download
memory/848-80-0x0000000007B00000-0x0000000007B14000-memory.dmp

Filesize
80KB

Download
memory/1280-123-0x0000018051BE0000-0x0000018051C02000-memory.dmp

Filesize
136KB

Download
memory/1280-135-0x0000018051DF0000-0x0000018051DFA000-memory.dmp

Filesize
40KB

Download
memory/2240-140-0x00000000052B0000-0x00000000052BA000-memory.dmp

Filesize
40KB

Download
memory/2240-139-0x00000000052D0000-0x0000000005362000-memory.dmp

Filesize
584KB

Download
memory/2240-136-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/2520-34-0x0000013942A80000-0x0000013942A88000-memory.dmp

Filesize
32KB

Download
memory/2520-32-0x00007FFFDA290000-0x00007FFFDAD51000-memory.dmp

Filesize
10.8MB

Download
memory/2520-38-0x000001395F260000-0x000001395F312000-memory.dmp

Filesize
712KB

Download
memory/2520-33-0x000001395CC70000-0x000001395CC96000-memory.dmp

Filesize
152KB

Download
memory/2520-35-0x0000013942A90000-0x0000013942A9A000-memory.dmp

Filesize
40KB

Download
memory/2520-39-0x000001395F3D0000-0x000001395F48A000-memory.dmp

Filesize
744KB

Download
memory/2520-31-0x000001395CB90000-0x000001395CC76000-memory.dmp

Filesize
920KB

Download
memory/2520-40-0x000001395F350000-0x000001395F388000-memory.dmp

Filesize
224KB

Download
memory/2520-28-0x0000013940DA0000-0x0000013940E94000-memory.dmp

Filesize
976KB

Download
memory/2520-46-0x000001395FAA0000-0x000001395FAAE000-memory.dmp

Filesize
56KB

Download
memory/2520-27-0x00007FFFDA293000-0x00007FFFDA295000-memory.dmp

Filesize
8KB

Download
memory/2520-86-0x00007FFFDA290000-0x00007FFFDAD51000-memory.dmp

Filesize
10.8MB

Download
memory/2520-41-0x000001395FB80000-0x000001395FB88000-memory.dmp

Filesize
32KB

Download
memory/2520-85-0x00007FFFDA293000-0x00007FFFDA295000-memory.dmp

Filesize
8KB

Download
memory/3944-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/3944-1-0x00000000003A0000-0x00000000003CC000-memory.dmp

Filesize
176KB

Download
memory/3944-2-0x0000000005380000-0x0000000005924000-memory.dmp

Filesize
5.6MB

Download