Analysis
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max time kernel
145s -
max time network
108s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
21/03/2023, 14:31
Behavioral task
behavioral1
Sample
c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe
Resource
win7-20230220-en
General
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Target
c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe
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Size
48KB
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MD5
0c2353b8b6923a16f523944d6514bb8f
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SHA1
d66baa60bcfbc057466b3ca0ef3076c5fd02210b
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SHA256
c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
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SHA512
857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d
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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
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delay
1
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install
true
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install_file
Microsoft Services.exe
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install_folder
%AppData%
Signatures
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Async RAT payload 6 IoCs
resource yara_rule behavioral1/memory/1368-54-0x0000000001200000-0x0000000001212000-memory.dmp asyncrat behavioral1/memory/1368-55-0x000000001B270000-0x000000001B2F0000-memory.dmp asyncrat behavioral1/files/0x000a00000001230a-66.dat asyncrat behavioral1/files/0x000a00000001230a-67.dat asyncrat behavioral1/memory/1952-68-0x00000000001D0000-0x00000000001E2000-memory.dmp asyncrat behavioral1/memory/1952-69-0x0000000000530000-0x00000000005B0000-memory.dmp asyncrat -
Executes dropped EXE 1 IoCs
pid Process 1952 Microsoft Services.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1748 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1140 timeout.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe Token: SeDebugPrivilege 1952 Microsoft Services.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1368 wrote to memory of 588 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 27 PID 1368 wrote to memory of 588 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 27 PID 1368 wrote to memory of 588 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 27 PID 1368 wrote to memory of 1880 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 29 PID 1368 wrote to memory of 1880 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 29 PID 1368 wrote to memory of 1880 1368 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 29 PID 588 wrote to memory of 1748 588 cmd.exe 31 PID 588 wrote to memory of 1748 588 cmd.exe 31 PID 588 wrote to memory of 1748 588 cmd.exe 31 PID 1880 wrote to memory of 1140 1880 cmd.exe 32 PID 1880 wrote to memory of 1140 1880 cmd.exe 32 PID 1880 wrote to memory of 1140 1880 cmd.exe 32 PID 1880 wrote to memory of 1952 1880 cmd.exe 33 PID 1880 wrote to memory of 1952 1880 cmd.exe 33 PID 1880 wrote to memory of 1952 1880 cmd.exe 33 -
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
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C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe"C:\Users\Admin\AppData\Local\Temp\c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1368 -
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:588 -
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:1748
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp42AC.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:1880 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:1140
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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:1952
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
162B
MD5e7bd34576e0f8037cd53b4f2b6499a95
SHA194b9487ab6228771b668d99ecea3c2cbf3fbe2e5
SHA25677db5c98c46e6a5eeaafc0239d8becfe1708570c2afd3ed22f77a1c41f3fadb3
SHA512567091eaeb2128546913f7f9387ae77e58b58021c8d8969a2d1d6a1faa22292e3099590314c6d41fb5c312b51fe1e43b76c8e92e88b1b79ce334085efcfe8bd6
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Filesize
162B
MD5e7bd34576e0f8037cd53b4f2b6499a95
SHA194b9487ab6228771b668d99ecea3c2cbf3fbe2e5
SHA25677db5c98c46e6a5eeaafc0239d8becfe1708570c2afd3ed22f77a1c41f3fadb3
SHA512567091eaeb2128546913f7f9387ae77e58b58021c8d8969a2d1d6a1faa22292e3099590314c6d41fb5c312b51fe1e43b76c8e92e88b1b79ce334085efcfe8bd6
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Filesize
48KB
MD50c2353b8b6923a16f523944d6514bb8f
SHA1d66baa60bcfbc057466b3ca0ef3076c5fd02210b
SHA256c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
SHA512857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d
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Filesize
48KB
MD50c2353b8b6923a16f523944d6514bb8f
SHA1d66baa60bcfbc057466b3ca0ef3076c5fd02210b
SHA256c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
SHA512857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d