Analysis
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max time kernel
91s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2023 07:17
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
1.1MB
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MD5
a5572238befa34a9bf4504320430c8c7
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SHA1
c7e65b96cf20413d48bf75a51213b9308ea1574c
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SHA256
eb36907f40e26aa64046f1ce3806bfd010b1589c81da26498aab66bd1818d9ec
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SHA512
471dfa37a25645f061345597d693dbfb52e6211700fba658e26d86340c74c52ae9261381b6821c4ee0a9d8e23e353e35bd3f55f3dabb98d32cb84528255f36af
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SSDEEP
24576:R203Nxje9P+cmPdlu0eUZRG4ZOJp2XzPGsAFPdJsuGSkl5l/Hld:R2gA1+pHuZU3ZOJp0NwPdJsu0l5V
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.exedsr0K.exepid process 624 file.tmp 1968 KitFiles136.exe 3608 dsr0K.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 624 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\is-2A9SE.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-IKLCK.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-BRIVP.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-06EM2.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-GAH5B.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-3HO0K.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-5RGB5.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-1CJ08.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-Q83AQ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-FBAQA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-CJ510.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-3NULI.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-HTFOA.tmp file.tmp File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-K2CHV.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\KitFiles136.exe 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 4968 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 1968 KitFiles136.exe 1968 KitFiles136.exe 1968 KitFiles136.exe 1968 KitFiles136.exe 1968 KitFiles136.exe 1968 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4968 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 2340 wrote to memory of 624 2340 file.exe file.tmp PID 2340 wrote to memory of 624 2340 file.exe file.tmp PID 2340 wrote to memory of 624 2340 file.exe file.tmp PID 624 wrote to memory of 1968 624 file.tmp KitFiles136.exe PID 624 wrote to memory of 1968 624 file.tmp KitFiles136.exe PID 624 wrote to memory of 1968 624 file.tmp KitFiles136.exe PID 1968 wrote to memory of 3608 1968 KitFiles136.exe dsr0K.exe PID 1968 wrote to memory of 3608 1968 KitFiles136.exe dsr0K.exe PID 1968 wrote to memory of 3608 1968 KitFiles136.exe dsr0K.exe PID 1968 wrote to memory of 4788 1968 KitFiles136.exe cmd.exe PID 1968 wrote to memory of 4788 1968 KitFiles136.exe cmd.exe PID 1968 wrote to memory of 4788 1968 KitFiles136.exe cmd.exe PID 4788 wrote to memory of 4968 4788 cmd.exe taskkill.exe PID 4788 wrote to memory of 4968 4788 cmd.exe taskkill.exe PID 4788 wrote to memory of 4968 4788 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:2340 -
C:\Users\Admin\AppData\Local\Temp\is-79EIE.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-79EIE.tmp\file.tmp" /SL5="$501C4,912556,51712,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:624 -
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:1968 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\dsr0K.exe4⤵
- Executes dropped EXE
PID:3608 -
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:4788 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4968
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.6MB
MD57db9f2aa187763080299ca47acb35ab7
SHA11a1dd5b24127420f726727ed40f5b5039769b3eb
SHA2565bb14521b52cd8341082711e7a59b85e4ba493fe4e36dfb856ad10ed496970c4
SHA51256df59c7e5806f80fdcfeb6e993a7d9c3397dd771c97515fe98a9f727a19a03aad16f792baa83c35fe24c28021ae20147ca40d1d79261bcdcf1a4f977e21ebf5
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Filesize
1.6MB
MD57db9f2aa187763080299ca47acb35ab7
SHA11a1dd5b24127420f726727ed40f5b5039769b3eb
SHA2565bb14521b52cd8341082711e7a59b85e4ba493fe4e36dfb856ad10ed496970c4
SHA51256df59c7e5806f80fdcfeb6e993a7d9c3397dd771c97515fe98a9f727a19a03aad16f792baa83c35fe24c28021ae20147ca40d1d79261bcdcf1a4f977e21ebf5
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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
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c