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Analysis
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max time kernel
120s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
25/12/2024, 18:52
Behavioral task
behavioral1
Sample
b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe
Resource
win10v2004-20241007-en
General
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Target
b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe
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Size
29KB
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MD5
b50ec30a22302a4c2fa1a9ce2c21b045
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SHA1
911ab0f8f2878cf90ff5e55daa7c7bad479ee312
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SHA256
b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec
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SHA512
a1eeebb061d3d2e3ed6f2dd24614ba69e8d51c1eebb265b96bde19cdd0a14934c96e5206e829b4883f496aa52d5bd9e02dc2d9b4bd9f0f8a8de24eb7da12c5cf
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SSDEEP
768:AEwHupU99d2JE0jNJJ83+8zzqgTdVY9/EhZ:AEwVs+0jNDY1qi/q8D
Malware Config
Signatures
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Detects MyDoom family 8 IoCs
resource yara_rule behavioral2/memory/4048-13-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom behavioral2/memory/4048-27-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom behavioral2/memory/4048-95-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom behavioral2/memory/4048-113-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom behavioral2/memory/4048-135-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom behavioral2/memory/4048-153-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom behavioral2/memory/4048-175-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom behavioral2/memory/4048-190-0x0000000000500000-0x0000000000510200-memory.dmp family_mydoom -
Mydoom family
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Executes dropped EXE 1 IoCs
pid Process 828 services.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\JavaVM = "C:\\Windows\\java.exe" b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Services = "C:\\Windows\\services.exe" services.exe -
resource yara_rule behavioral2/memory/4048-0-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/files/0x0007000000023ca6-4.dat upx behavioral2/memory/828-5-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/4048-13-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-15-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/828-16-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/828-21-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/828-26-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/4048-27-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-28-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/files/0x0009000000023cad-41.dat upx behavioral2/memory/4048-95-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-96-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/4048-113-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-114-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/4048-135-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-136-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/828-145-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/4048-153-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-154-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/4048-175-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-176-0x0000000000400000-0x0000000000408000-memory.dmp upx behavioral2/memory/4048-190-0x0000000000500000-0x0000000000510200-memory.dmp upx behavioral2/memory/828-191-0x0000000000400000-0x0000000000408000-memory.dmp upx -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\services.exe b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe File opened for modification C:\Windows\java.exe b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe File created C:\Windows\java.exe b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language services.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4048 wrote to memory of 828 4048 b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe 82 PID 4048 wrote to memory of 828 4048 b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe 82 PID 4048 wrote to memory of 828 4048 b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe"C:\Users\Admin\AppData\Local\Temp\b5a491a73cb47e0815b8843bf87a09a80538ccd0f5c946fbb7469814053877ec.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4048 -
C:\Windows\services.exe"C:\Windows\services.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
PID:828
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
25B
MD58ba61a16b71609a08bfa35bc213fce49
SHA18374dddcc6b2ede14b0ea00a5870a11b57ced33f
SHA2566aa63394c1f5e705b1e89c55ff19eed71957e735c3831a845ff62f74824e13f1
SHA5125855f5b2a78877f7a27ff92eaaa900d81d02486e6e2ea81d80b6f6cf1fe254350444980017e00cdeecdd3c67b86e7acc90cd2d77f06210bdd1d7b1a71d262df1
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Filesize
312B
MD5c15952329e9cd008b41f979b6c76b9a2
SHA153c58cc742b5a0273df8d01ba2779a979c1ff967
SHA2565d065a88f9a1fb565c2d70e87148d469dd9dcbbefea4ccc8c181745eda748ab7
SHA5126aecdd949abcd2cb54e2fe3e1171ee47c247aa3980a0847b9934f506ef9b2d3180831adf6554c68b0621f9f9f3cd88767ef9487bc6e51cecd6a8857099a7b296
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Filesize
29KB
MD596074fe915a3055a63db9243e8375da7
SHA105360eac750eb827821bd9d3e4614f9a34239c88
SHA256b067c666222ccb43b1e678b9cd0be44d0558532f03429e0c55de1fe63ab4140b
SHA5129af845aa49a7e43988d7149e7d206c5fdb98fd992dee53c1e5ab06255469d41e597a51bd96187bac69e73e8feb5244f7f8dda27bd371989c71939928107c1fa5
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Filesize
320B
MD530655de9ff68b4d971abcb54f273b421
SHA1697d8d23fe00edda29e6aa85b655030991134216
SHA2569da2dceb65767523b1dd20a9f4a09c34f688763a4dfc08f91271b8d2b31f6aad
SHA512ce7d58e1723a570b680be37623f3711857a9b45a363cd0d672a55838aa852b062a134f5e1f40ece8384bbbc17241742774c0481f3437d7a48b8a9388936fd467
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Filesize
320B
MD5bcdd3e55582c5a877acff72c1f894a8a
SHA12d34868e35f225293e7952eed7e34265dc025c91
SHA256210bcedd49860032c4505ee8ca76bcc05425a61424f2c492c17f9f322ecc17ce
SHA51231102263beb678c3cdba726426b9e55387ed7eeebfe4e0bf12c34acf64b069ada78c8b47d90d932e6baa1153c0c831db66dcdb16135ea62b112c2166c8f71ef6
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Filesize
8KB
MD5b0fe74719b1b647e2056641931907f4a
SHA1e858c206d2d1542a79936cb00d85da853bfc95e2
SHA256bf316f51d0c345d61eaee3940791b64e81f676e3bca42bad61073227bee6653c
SHA5129c82e88264696d0dadef9c0442ad8d1183e48f0fb355a4fc9bf4fa5db4e27745039f98b1fd1febff620a5ded6dd493227f00d7d2e74b19757685aa8655f921c2