Analysis
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max time kernel
153s -
max time network
129s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
22/01/2024, 19:32
Behavioral task
behavioral1
Sample
UniAccChecker.exe
Resource
win7-20231215-en
General
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Target
UniAccChecker.exe
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Size
63KB
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MD5
e40435c6df1a16aad70fcb8582228bc3
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SHA1
8d5a1a1213b6680cfe3cb59aa0383ae8a91d5141
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SHA256
6148afd882ab17b41c7e5d92569d55426ef18bec0c45335529ca66c0ae19efdd
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SHA512
f7e33a06735e0297c06d3875010bc065471ce44ff86466cdf36c7773f4c3b1e9aef96c00efbf162976f695e50f06e7729f995a63a9de6335e0dcb36e7a19da2b
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SSDEEP
1536:UJ/t/dSJYUbdh9IM1b+uFg6CinpqKmY7:U3/YYUbd3Zg6Ci0z
Malware Config
Extracted
asyncrat
Default
127.0.0.1:3232
吾吾owlΒiH1XNبmש吉E迪yاqCX
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delay
1
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install
true
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install_file
GoogleChromeUpd.exe
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install_folder
%AppData%
Signatures
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Async RAT payload 4 IoCs
resource yara_rule behavioral1/memory/1016-0-0x0000000001140000-0x0000000001156000-memory.dmp asyncrat behavioral1/files/0x0009000000012270-16.dat asyncrat behavioral1/memory/2724-18-0x0000000000BB0000-0x0000000000BC6000-memory.dmp asyncrat behavioral1/memory/2724-20-0x000000001B1F0000-0x000000001B270000-memory.dmp asyncrat -
Executes dropped EXE 1 IoCs
pid Process 2724 GoogleChromeUpd.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 2832 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 2904 timeout.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1016 UniAccChecker.exe 1016 UniAccChecker.exe 1016 UniAccChecker.exe 1016 UniAccChecker.exe 1016 UniAccChecker.exe 1016 UniAccChecker.exe 1016 UniAccChecker.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe 2724 GoogleChromeUpd.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1016 UniAccChecker.exe Token: SeDebugPrivilege 1016 UniAccChecker.exe Token: SeDebugPrivilege 2724 GoogleChromeUpd.exe Token: SeDebugPrivilege 2724 GoogleChromeUpd.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1016 wrote to memory of 2300 1016 UniAccChecker.exe 29 PID 1016 wrote to memory of 2300 1016 UniAccChecker.exe 29 PID 1016 wrote to memory of 2300 1016 UniAccChecker.exe 29 PID 1016 wrote to memory of 2784 1016 UniAccChecker.exe 32 PID 1016 wrote to memory of 2784 1016 UniAccChecker.exe 32 PID 1016 wrote to memory of 2784 1016 UniAccChecker.exe 32 PID 2784 wrote to memory of 2904 2784 cmd.exe 33 PID 2784 wrote to memory of 2904 2784 cmd.exe 33 PID 2784 wrote to memory of 2904 2784 cmd.exe 33 PID 2300 wrote to memory of 2832 2300 cmd.exe 34 PID 2300 wrote to memory of 2832 2300 cmd.exe 34 PID 2300 wrote to memory of 2832 2300 cmd.exe 34 PID 2784 wrote to memory of 2724 2784 cmd.exe 35 PID 2784 wrote to memory of 2724 2784 cmd.exe 35 PID 2784 wrote to memory of 2724 2784 cmd.exe 35 -
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\UniAccChecker.exe"C:\Users\Admin\AppData\Local\Temp\UniAccChecker.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1016 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "GoogleChromeUpd" /tr '"C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
PID:2300 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "GoogleChromeUpd" /tr '"C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe"'3⤵
- Creates scheduled task(s)
PID:2832
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp7E83.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:2784 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:2904
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C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe"C:\Users\Admin\AppData\Roaming\GoogleChromeUpd.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2724
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
159B
MD50f22e5336c09acf8ff1a702c842b1fc9
SHA1929c137aba16114adbbccb1148ba17d5bdcdacc7
SHA256d66f37898c41cc218a3f15f792c4c4993af5076c92ef4eb92b88196f8cb85ed2
SHA5125a3c462de74b028430f021a6b7dbd5bf45ade0d04862ce564deaf1f2912d2b7758e736a746bffdd96bf7567e91815401e41670e6a8f2a5156625a7adc4c186c2
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Filesize
63KB
MD5e40435c6df1a16aad70fcb8582228bc3
SHA18d5a1a1213b6680cfe3cb59aa0383ae8a91d5141
SHA2566148afd882ab17b41c7e5d92569d55426ef18bec0c45335529ca66c0ae19efdd
SHA512f7e33a06735e0297c06d3875010bc065471ce44ff86466cdf36c7773f4c3b1e9aef96c00efbf162976f695e50f06e7729f995a63a9de6335e0dcb36e7a19da2b