Analysis
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max time kernel
136s -
max time network
156s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
21/03/2023, 13:26
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/1196-54-0x00000000001B0000-0x00000000001C2000-memory.dmp asyncrat behavioral1/memory/1196-55-0x000000001B220000-0x000000001B2A0000-memory.dmp asyncrat behavioral1/files/0x002000000000f683-66.dat asyncrat behavioral1/files/0x002000000000f683-67.dat asyncrat behavioral1/memory/1388-68-0x0000000000BA0000-0x0000000000BB2000-memory.dmp asyncrat behavioral1/memory/1388-69-0x0000000000420000-0x00000000004A0000-memory.dmp asyncrat -
Executes dropped EXE 1 IoCs
pid Process 1388 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 712 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 828 timeout.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe Token: SeDebugPrivilege 1388 Microsoft Services.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1196 wrote to memory of 860 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 27 PID 1196 wrote to memory of 860 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 27 PID 1196 wrote to memory of 860 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 27 PID 860 wrote to memory of 712 860 cmd.exe 29 PID 860 wrote to memory of 712 860 cmd.exe 29 PID 860 wrote to memory of 712 860 cmd.exe 29 PID 1196 wrote to memory of 1748 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 30 PID 1196 wrote to memory of 1748 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 30 PID 1196 wrote to memory of 1748 1196 c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3.exe 30 PID 1748 wrote to memory of 828 1748 cmd.exe 32 PID 1748 wrote to memory of 828 1748 cmd.exe 32 PID 1748 wrote to memory of 828 1748 cmd.exe 32 PID 1748 wrote to memory of 1388 1748 cmd.exe 33 PID 1748 wrote to memory of 1388 1748 cmd.exe 33 PID 1748 wrote to memory of 1388 1748 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:1196 -
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:860 -
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:712
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpEEA4.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:1748 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:828
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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:1388
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
162B
MD5a0c4dbd8171b25def4dd6b440110a194
SHA1ff5fa174fa1fd86cd101c4e58cfd81d0d0d06d62
SHA2564dc0db246e42c8343404587ea61b7857f86aa87e287aa8f2f00ea909d7624714
SHA512be7c082fadc57ed2edc7fcc879d053dbd39f543b395f63a88695923be04cd6cd6f29cdb0c1d3bb947967d021434e4ebe24b3f34b733bec9bd12b7db58a435716
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Filesize
162B
MD5a0c4dbd8171b25def4dd6b440110a194
SHA1ff5fa174fa1fd86cd101c4e58cfd81d0d0d06d62
SHA2564dc0db246e42c8343404587ea61b7857f86aa87e287aa8f2f00ea909d7624714
SHA512be7c082fadc57ed2edc7fcc879d053dbd39f543b395f63a88695923be04cd6cd6f29cdb0c1d3bb947967d021434e4ebe24b3f34b733bec9bd12b7db58a435716
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Filesize
48KB
MD50c2353b8b6923a16f523944d6514bb8f
SHA1d66baa60bcfbc057466b3ca0ef3076c5fd02210b
SHA256c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
SHA512857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d
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Filesize
48KB
MD50c2353b8b6923a16f523944d6514bb8f
SHA1d66baa60bcfbc057466b3ca0ef3076c5fd02210b
SHA256c69b81e6499b64d01ed7b231985f9061e8553309cbd64b00d1699e71d58fd4c3
SHA512857a0dbf2cd41349d72df6a68ad4743bd1d0b2cbdf245be4e3abda10e0323678beb5d0b78ebd968db751a3de58b924e792f64cc6ca1e7b0f27b42869179c979d