asyncrat | cf4921a55199c27c24e4fbacc4a3e90d4d5249e4aeb4de2eafe56d395cdfbde4

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
07/02/2023, 22:59

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Report Analysis Logs

General

Target
Report.ps1
Size 162KB
Sample230207-2ydfdsga92
SHA256 cf4921a55199c27c24e4fbacc4a3e90d4d5249e4aeb4de2eafe56d395cdfbde4
MD5 79396e0c781e2c31d4ec0cd97d434d86
SHA1 588a5243362892c4cbbb9fc42d1dbb454687e5a1
SHA512 603d635af42d83cb3ffa4e59b2d822f69047ef5d3fdbb3cd3f80cf08bcd766a3ab531d5966ac8bedaed4f4112b24b19b2cbbae21d2a74a70de744fa7b6c1a179
SSDEEP 3072:oN2A/QIyO2MjD9L8mtvDNOQkowmGcA63Ap9:oN2A/QIypMjD9L1xUowmGcA63Ap9
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat osaya&tefa persistence rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

OsaYa&Tefa

osostata.com:7777

Mutex

AsyncMutex_Other

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/4668-134-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral2/memory/4668-135-0x0000000000410A5E-mapping.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run	msedge.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1480 set thread context of 4668	1480	powershell.exe	84

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\1360c244-7d97-4ece-b0d5-6c0254a218d9.tmp	setup.exe
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\SetupMetrics\20230208000124.pma	setup.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	msedge.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1480	powershell.exe
1480	powershell.exe
4668	RegSvcs.exe
4996	msedge.exe
4996	msedge.exe
5016	msedge.exe
5016	msedge.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
4668	RegSvcs.exe
3780	identity_helper.exe
3780	identity_helper.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs

pid	Process
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1480	powershell.exe
Token: SeDebugPrivilege	4668	RegSvcs.exe

Suspicious use of FindShellTrayWindow 27 IoCs

pid	Process
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe

Suspicious use of SendNotifyMessage 24 IoCs

pid	Process
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe
5016	msedge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4668	RegSvcs.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 1480 wrote to memory of 4668	1480	powershell.exe	84
PID 5016 wrote to memory of 4616	5016	msedge.exe	95
PID 5016 wrote to memory of 4616	5016	msedge.exe	95
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 464	5016	msedge.exe	98
PID 5016 wrote to memory of 4996	5016	msedge.exe	99
PID 5016 wrote to memory of 4996	5016	msedge.exe	99
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100
PID 5016 wrote to memory of 1856	5016	msedge.exe	100

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Report.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4668

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
1⤵
- Adds Run key to start application
- Enumerates system info in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ff8b4c646f8,0x7ff8b4c64708,0x7ff8b4c64718
  2⤵
  PID:4616
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2200 /prefetch:2
  2⤵
  PID:464
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2348 /prefetch:3
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4996
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2736 /prefetch:8
  2⤵
  PID:1856
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3392 /prefetch:1
  2⤵
  PID:412
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3780 /prefetch:1
  2⤵
  PID:4824
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3800 /prefetch:1
  2⤵
  PID:4716
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=4756 /prefetch:8
  2⤵
  PID:1896
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5796 /prefetch:8
  2⤵
  PID:4244
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5816 /prefetch:1
  2⤵
  PID:2348
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6312 /prefetch:8
  2⤵
  PID:3496
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --configure-user-settings --verbose-logging --system-level --msedge --force-configure-user-settings
  2⤵
  - Drops file in Program Files directory
  PID:3196
- - C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\TEMP\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\Installer\setup.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0x244,0x248,0x24c,0x220,0x250,0x7ff60de45460,0x7ff60de45470,0x7ff60de45480
    3⤵
    PID:2504
- C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6312 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:3780
- C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2160,3552410050912532284,2257406825782833440,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6212 /prefetch:1
  2⤵
  PID:6076

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3752

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1480-141-0x00007FF8B3180000-0x00007FF8B3C41000-memory.dmp

Download

memory/1480-132-0x000001B5A47C0000-0x000001B5A47E2000-memory.dmp

Download

memory/1480-133-0x00007FF8B3180000-0x00007FF8B3C41000-memory.dmp

Download

memory/4668-138-0x00000000056E0000-0x00000000056EA000-memory.dmp

Download

memory/4668-143-0x0000000007010000-0x000000000702E000-memory.dmp

Download

memory/4668-142-0x0000000007030000-0x00000000070A6000-memory.dmp

Download

memory/4668-140-0x0000000006840000-0x00000000068A6000-memory.dmp

Download

memory/4668-139-0x00000000067A0000-0x000000000683C000-memory.dmp

Download

memory/4668-137-0x0000000005700000-0x0000000005792000-memory.dmp

Download

memory/4668-136-0x0000000005AD0000-0x0000000006074000-memory.dmp

Download

memory/4668-134-0x0000000000400000-0x0000000000416000-memory.dmp

Download