Analysis
-
max time kernel
130s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
21/03/2023, 14:31
Behavioral task
behavioral1
Sample
c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe
Resource
win7-20230220-en
General
-
Target
c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe
-
Size
48KB
-
MD5
0c2353b8b6923a16f523944d6514bb8f
-
SHA1
d66baa60bcfbc057466b3ca0ef3076c5fd02210b
-
SHA256
c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
-
SHA512
857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d
-
SSDEEP
768:OV9TQo2oIL4+M0+Li4ciiyYb1ge6eez+/vEgK/J8AmVc6KN:OVpQoVsbRbSlnz+/nkJ8AmVclN
Malware Config
Extracted
asyncrat
1.0.7
Default
127.0.0.1:8809
thebest39393.ddns.net:8809
DcRatMutex_qwqdanchun
-
delay
1
-
install
true
-
install_file
Microsoft Services.exe
-
install_folder
%AppData%
Signatures
-
Async RAT payload 3 IoCs
resource yara_rule behavioral2/memory/3716-133-0x0000000000C30000-0x0000000000C42000-memory.dmp asyncrat behavioral2/files/0x00020000000230fc-141.dat asyncrat behavioral2/files/0x00020000000230fc-142.dat asyncrat -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Control Panel\International\Geo\Nation c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe -
Executes dropped EXE 1 IoCs
pid Process 3688 Microsoft Services.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2916 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 756 timeout.exe -
Suspicious behavior: EnumeratesProcesses 23 IoCs
pid Process 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe Token: SeDebugPrivilege 3688 Microsoft Services.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 3716 wrote to memory of 3776 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 86 PID 3716 wrote to memory of 3776 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 86 PID 3716 wrote to memory of 3240 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 88 PID 3716 wrote to memory of 3240 3716 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 88 PID 3240 wrote to memory of 756 3240 cmd.exe 90 PID 3240 wrote to memory of 756 3240 cmd.exe 90 PID 3776 wrote to memory of 2916 3776 cmd.exe 91 PID 3776 wrote to memory of 2916 3776 cmd.exe 91 PID 3240 wrote to memory of 3688 3240 cmd.exe 95 PID 3240 wrote to memory of 3688 3240 cmd.exe 95 -
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.
Processes
-
C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe"C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3716 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Microsoft Services" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
PID:3776 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "Microsoft Services" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"'3⤵
- Creates scheduled task(s)
PID:2916
-
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB77D.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:3240 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:756
-
-
C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"C:\Users\Admin\AppData\Roaming\Microsoft Services.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3688
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
162B
MD55ca716bcb3f7a33e29b325b61d67dbd7
SHA1b2671dad9b36d778611cf2239794102342d9c4c0
SHA2563fc9801c82ecace3781a149c9b270d8ac00fd8ba37563fda87b8c6f736fda2e9
SHA512f74abd29a27e414f15760f78e161eadea0bb5ed18b65aaea36fe8d95f9ca276053a961d26383f327d3ea9df52759bb08ec6ac9e21d864e6ae406eb926745c4ac
-
Filesize
48KB
MD50c2353b8b6923a16f523944d6514bb8f
SHA1d66baa60bcfbc057466b3ca0ef3076c5fd02210b
SHA256c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
SHA512857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d
-
Filesize
48KB
MD50c2353b8b6923a16f523944d6514bb8f
SHA1d66baa60bcfbc057466b3ca0ef3076c5fd02210b
SHA256c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
SHA512857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d