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Analysis
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max time kernel
143s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
01/02/2024, 18:12
Static task
static1
Behavioral task
behavioral1
Sample
878c566de276df6679ec513a6450f4b2.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
878c566de276df6679ec513a6450f4b2.exe
Resource
win10v2004-20231215-en
General
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Target
878c566de276df6679ec513a6450f4b2.exe
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Size
185KB
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MD5
878c566de276df6679ec513a6450f4b2
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SHA1
f2034a88a23cc38d6bf6aa8faa9173bc6b715b50
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SHA256
7df76a319373b547219b28e7222c97527bf6589ca2fa617e683517e98978d059
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SHA512
7257d443497fb78933208f5ae61e969dcd0eb46478901b2666e7299e3a5bee2e5a40396dbf4a03d693bf0e416ab7ba8160b81ed31fa0b497e606d80fb25cc867
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SSDEEP
3072:3k1qCmOEVlxJJLf8Lk8TpUjwIdunWQrHbMsKJDVHi+mvUQwKizTDLyn6OYBQfmzN:3k1ZmOgxJJ43dOdunX7MPJDVC+g6zjaG
Malware Config
Signatures
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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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation 878c566de276df6679ec513a6450f4b2.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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resource yara_rule behavioral2/memory/1056-1-0x0000000000400000-0x0000000000495000-memory.dmp upx behavioral2/memory/1056-2-0x0000000000400000-0x0000000000495000-memory.dmp upx behavioral2/memory/1056-3-0x0000000000400000-0x0000000000495000-memory.dmp upx behavioral2/memory/1056-4-0x0000000000400000-0x0000000000495000-memory.dmp upx behavioral2/memory/1056-5-0x0000000000400000-0x0000000000495000-memory.dmp upx behavioral2/memory/1056-6-0x0000000000400000-0x0000000000495000-memory.dmp upx behavioral2/memory/1056-9-0x0000000000400000-0x0000000000495000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\WINAG = "C:\\Users\\Admin\\AppData\\Local\\Temp\\878c566de276df6679ec513a6450f4b2.exe /cs:1 " 878c566de276df6679ec513a6450f4b2.exe Set value (str) \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WINAG = "\"C:\\4f534f8\\WinADGuard.exe\" /s" 878c566de276df6679ec513a6450f4b2.exe -
Checks for any installed AV software in registry 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Eset\Nod\ 878c566de276df6679ec513a6450f4b2.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Kills process with taskkill 1 IoCs
pid Process 3136 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3136 taskkill.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1056 wrote to memory of 3136 1056 878c566de276df6679ec513a6450f4b2.exe 87 PID 1056 wrote to memory of 3136 1056 878c566de276df6679ec513a6450f4b2.exe 87 PID 1056 wrote to memory of 3136 1056 878c566de276df6679ec513a6450f4b2.exe 87 PID 1056 wrote to memory of 4864 1056 878c566de276df6679ec513a6450f4b2.exe 97 PID 1056 wrote to memory of 4864 1056 878c566de276df6679ec513a6450f4b2.exe 97 PID 1056 wrote to memory of 4864 1056 878c566de276df6679ec513a6450f4b2.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\878c566de276df6679ec513a6450f4b2.exe"C:\Users\Admin\AppData\Local\Temp\878c566de276df6679ec513a6450f4b2.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Checks for any installed AV software in registry
- Suspicious use of WriteProcessMemory
PID:1056 -
C:\Windows\SysWOW64\taskkill.exe"C:\Windows\System32\taskkill.exe" /F /IM MSASCui* /IM avg* /IM ash* /IM McSA*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3136
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\del.bat" >> NUL2⤵PID:4864
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
183B
MD5822e76592870b80729cf9824146a042d
SHA1d1b4b6e5cc9de93cc653df6c277cf47727c6b79f
SHA256f38d8764fb335a2d68dae5f73a26d21639ab0a43508a3f9ce28f60c1f930d445
SHA512a32001b5269e06f1d424d9ebc30ba60930ab790e0d863970dc482b877f3694bf6f6401b335793ff85cf3047356560f9c8b5781a8d5aa170228794b8079bf2e5e