Analysis
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max time kernel
90s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2023 04:01
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
General
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Target
file.exe
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Size
1.1MB
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MD5
7de0d0e781a12576880e625330a7f042
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SHA1
f01e7c6a22c2dfc53861650442254cbf1d46bc63
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SHA256
b7ac4c38eb0254df7abebad1d91a4cb6a9ae89fc8f95a216acea5314681e217d
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SHA512
9efb715fff81b6590fbb7e0da4264a2b4bb21b3825875753edcdf976c85538cb597f13bddc26b9c8af06e6f9157e44729b07cdadbbe5d538438068778babeaab
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SSDEEP
12288:R20tQcyXjdnvuljIk5FRcu/YiJWj5iGkBLNreAE8WI/FWeXaQ5W5LSklMMdeLu/f:R20ycQdnmlzd/YsqirNrvsBSkl5l/Hld
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
Processes:
file.tmpKitFiles136.exeyWKVRaKXW4bc.exepid process 4440 file.tmp 3184 KitFiles136.exe 3220 yWKVRaKXW4bc.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
KitFiles136.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 4440 file.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
Processes:
file.tmpdescription ioc process File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-PAKC0.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\KitFiles136.exe file.tmp File created C:\Program Files (x86)\Split Files\is-DA6LA.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\language\is-ILLQ7.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-PQI5B.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-F7A9O.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-I79GE.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-F166U.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-TSPBN.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-H4SM0.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-72CIK.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-9A5A6.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-RU31L.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-RM0E3.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-17IG5.tmp file.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
Processes:
taskkill.exepid process 4288 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 3184 KitFiles136.exe 3184 KitFiles136.exe 3184 KitFiles136.exe 3184 KitFiles136.exe 3184 KitFiles136.exe 3184 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4288 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4880 wrote to memory of 4440 4880 file.exe file.tmp PID 4880 wrote to memory of 4440 4880 file.exe file.tmp PID 4880 wrote to memory of 4440 4880 file.exe file.tmp PID 4440 wrote to memory of 3184 4440 file.tmp KitFiles136.exe PID 4440 wrote to memory of 3184 4440 file.tmp KitFiles136.exe PID 4440 wrote to memory of 3184 4440 file.tmp KitFiles136.exe PID 3184 wrote to memory of 3220 3184 KitFiles136.exe yWKVRaKXW4bc.exe PID 3184 wrote to memory of 3220 3184 KitFiles136.exe yWKVRaKXW4bc.exe PID 3184 wrote to memory of 3220 3184 KitFiles136.exe yWKVRaKXW4bc.exe PID 3184 wrote to memory of 5032 3184 KitFiles136.exe cmd.exe PID 3184 wrote to memory of 5032 3184 KitFiles136.exe cmd.exe PID 3184 wrote to memory of 5032 3184 KitFiles136.exe cmd.exe PID 5032 wrote to memory of 4288 5032 cmd.exe taskkill.exe PID 5032 wrote to memory of 4288 5032 cmd.exe taskkill.exe PID 5032 wrote to memory of 4288 5032 cmd.exe taskkill.exe
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:4880 -
C:\Users\Admin\AppData\Local\Temp\is-V2BPH.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-V2BPH.tmp\file.tmp" /SL5="$801B8,862156,51712,C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4440 -
C:\Program Files (x86)\Split Files\KitFiles136.exe"C:\Program Files (x86)\Split Files\KitFiles136.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3184 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\yWKVRaKXW4bc.exe4⤵
- Executes dropped EXE
PID:3220 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "KitFiles136.exe" /f & erase "C:\Program Files (x86)\Split Files\KitFiles136.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:5032 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4288
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5aac01f605590f41e90f52ccf6bff2d3a
SHA11fa1dd4b450abc22430065ef5a00a5e5bd8c6d30
SHA256e5e1b88189c5b7e29b8932afc8cb3b3931973ea57ef268607af37454eec898b2
SHA512af8076033f27867f2dd19411a54ce810f8d3af593530b796d60bf710053d5a05ae2327e434a74e73aabefc67d25edd2efd1ad3611098c0d26eb89179f2df2c7a
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Filesize
1.6MB
MD5aac01f605590f41e90f52ccf6bff2d3a
SHA11fa1dd4b450abc22430065ef5a00a5e5bd8c6d30
SHA256e5e1b88189c5b7e29b8932afc8cb3b3931973ea57ef268607af37454eec898b2
SHA512af8076033f27867f2dd19411a54ce810f8d3af593530b796d60bf710053d5a05ae2327e434a74e73aabefc67d25edd2efd1ad3611098c0d26eb89179f2df2c7a
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
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Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c