Analysis
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max time kernel
91s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
29/12/2022, 03:49
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
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Target
file.exe
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Size
1.8MB
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MD5
96757e2b793503f1cf50e83e0c8158b3
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SHA1
0e81c657f632530055f976cb7f8de7245afe9762
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SHA256
e1e7b51b3fd1919a8fbd6deef2c1d1e8378c5d02a33610da31009c005b2bb64d
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SHA512
3157c38edc91bc3aa4c0060c1b747467320dba78ae6a06791701ea3946a2d5edea15f8d937dc6dc275f29e2af908eaab4a4803044fd13fd6336bda9373e11364
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SSDEEP
24576:CpniMxYPigDGbDDO1XXHZuRWQIEUYbbLtL+hUb1rtuKwPQ1LT4+ZlJruoPpMqa7B:gi9YDqNXHMsqEW3Rw2A4DuoPpMv7NL
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 780 is-5N9AN.tmp 1140 SplitFiles124.exe 2784 N4ZzEMeML.exe -
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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation SplitFiles124.exe -
Loads dropped DLL 1 IoCs
pid Process 780 is-5N9AN.tmp -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 17 IoCs
description ioc Process File created C:\Program Files (x86)\Split Files\unins000.dat is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\is-NEIDF.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-C5DI1.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-JSHS0.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\is-A2NVM.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-ORI78.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-0FC9U.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-18L80.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\is-CO3F4.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-B6FMI.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-K8PS5.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-JRRQ9.tmp is-5N9AN.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles124.exe is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\is-5G51I.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\language\is-MTB8L.tmp is-5N9AN.tmp File created C:\Program Files (x86)\Split Files\is-FS7EG.tmp is-5N9AN.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-5N9AN.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
pid Process 2288 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1140 SplitFiles124.exe 1140 SplitFiles124.exe 1140 SplitFiles124.exe 1140 SplitFiles124.exe 1140 SplitFiles124.exe 1140 SplitFiles124.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2288 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2420 wrote to memory of 780 2420 file.exe 82 PID 2420 wrote to memory of 780 2420 file.exe 82 PID 2420 wrote to memory of 780 2420 file.exe 82 PID 780 wrote to memory of 1140 780 is-5N9AN.tmp 83 PID 780 wrote to memory of 1140 780 is-5N9AN.tmp 83 PID 780 wrote to memory of 1140 780 is-5N9AN.tmp 83 PID 1140 wrote to memory of 2784 1140 SplitFiles124.exe 87 PID 1140 wrote to memory of 2784 1140 SplitFiles124.exe 87 PID 1140 wrote to memory of 2784 1140 SplitFiles124.exe 87 PID 1140 wrote to memory of 2632 1140 SplitFiles124.exe 92 PID 1140 wrote to memory of 2632 1140 SplitFiles124.exe 92 PID 1140 wrote to memory of 2632 1140 SplitFiles124.exe 92 PID 2632 wrote to memory of 2288 2632 cmd.exe 94 PID 2632 wrote to memory of 2288 2632 cmd.exe 94 PID 2632 wrote to memory of 2288 2632 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2420 -
C:\Users\Admin\AppData\Local\Temp\is-QB85N.tmp\is-5N9AN.tmp"C:\Users\Admin\AppData\Local\Temp\is-QB85N.tmp\is-5N9AN.tmp" /SL4 $701D8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1588479 967682⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:780 -
C:\Program Files (x86)\Split Files\SplitFiles124.exe"C:\Program Files (x86)\Split Files\SplitFiles124.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1140 -
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\N4ZzEMeML.exe4⤵
- Executes dropped EXE
PID:2784
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles124.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles124.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:2632 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles124.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2288
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD530af2330d59fdc942c3fc9169d2c562d
SHA19558de6dc2846f85a601d2c629afba6ac22482a7
SHA256bbc1e7d208cdc7a998588a662623f065fd52f32b16fec963c89ea02d9227d03c
SHA5128af5c5c196ab65461b8d92b1ae7faaaff62a404a456af9c782cf90b470aea94d8b58ad9fe85f4cb1011f9884fec17577dd702944695f4462ecd53faf180fa4d0
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Filesize
3.1MB
MD530af2330d59fdc942c3fc9169d2c562d
SHA19558de6dc2846f85a601d2c629afba6ac22482a7
SHA256bbc1e7d208cdc7a998588a662623f065fd52f32b16fec963c89ea02d9227d03c
SHA5128af5c5c196ab65461b8d92b1ae7faaaff62a404a456af9c782cf90b470aea94d8b58ad9fe85f4cb1011f9884fec17577dd702944695f4462ecd53faf180fa4d0
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
688KB
MD5807603f3a565337ee2ac3e819b25ee58
SHA15cc4e6c82fbdda6697a1117561f23731d51baacd
SHA256682dd0a4ea6b0d763a1adb14def8657518a4879e454c7ece43505910dd448423
SHA512252831b5fe5869c0abd25f246fe161e5b8218e9c54231fa9c5c78d5ffe6ff0c8e3d1f9ea3316f74b47ce372f1f8f06edd8e147711633f4028acd0cf7d5cd946d
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Filesize
688KB
MD5807603f3a565337ee2ac3e819b25ee58
SHA15cc4e6c82fbdda6697a1117561f23731d51baacd
SHA256682dd0a4ea6b0d763a1adb14def8657518a4879e454c7ece43505910dd448423
SHA512252831b5fe5869c0abd25f246fe161e5b8218e9c54231fa9c5c78d5ffe6ff0c8e3d1f9ea3316f74b47ce372f1f8f06edd8e147711633f4028acd0cf7d5cd946d
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c