Analysis
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max time kernel
71s -
max time network
92s -
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 15:17
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
d2fe007d530fe809610e65bcd2e4a2aa
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SHA1
27763d970154e5ba8db33e84e2a9aa4968b38f05
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SHA256
f8df4c7f545254d02dc3205296d02bcc870b645dce72e26a8bad566b79e5be22
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SHA512
b281a3f19a464c445c6e15592771e3b565d084ecc35c6f1ccdcc93e16741c75bb791de2644174b6ecc458aacf143addb85fad546fba0eb2a60db376ad5ebe6ac
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SSDEEP
24576:R20OLrKJewdUmx71DObX+duCNMXOSKQNf0tg7Skl5l/Hld:R232Jt5d0jMM+SLCgXl5V
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.exe9zuk468wA.exepid process 2952 file.tmp 2704 KitFiles136.exe 1576 9zuk468wA.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 2952 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\language\is-708N5.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-EO0CD.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-A2H2L.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-D2OV3.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-HRNR8.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-LKT9T.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-IIR1M.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-OBA8H.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-3061E.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-RDVIM.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-3EAQ0.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\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-C6D6L.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-G4AQF.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-53EE8.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat 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 4624 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 2704 KitFiles136.exe 2704 KitFiles136.exe 2704 KitFiles136.exe 2704 KitFiles136.exe 2704 KitFiles136.exe 2704 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4624 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 2312 wrote to memory of 2952 2312 file.exe file.tmp PID 2312 wrote to memory of 2952 2312 file.exe file.tmp PID 2312 wrote to memory of 2952 2312 file.exe file.tmp PID 2952 wrote to memory of 2704 2952 file.tmp KitFiles136.exe PID 2952 wrote to memory of 2704 2952 file.tmp KitFiles136.exe PID 2952 wrote to memory of 2704 2952 file.tmp KitFiles136.exe PID 2704 wrote to memory of 1576 2704 KitFiles136.exe 9zuk468wA.exe PID 2704 wrote to memory of 1576 2704 KitFiles136.exe 9zuk468wA.exe PID 2704 wrote to memory of 1576 2704 KitFiles136.exe 9zuk468wA.exe PID 2704 wrote to memory of 3540 2704 KitFiles136.exe cmd.exe PID 2704 wrote to memory of 3540 2704 KitFiles136.exe cmd.exe PID 2704 wrote to memory of 3540 2704 KitFiles136.exe cmd.exe PID 3540 wrote to memory of 4624 3540 cmd.exe taskkill.exe PID 3540 wrote to memory of 4624 3540 cmd.exe taskkill.exe PID 3540 wrote to memory of 4624 3540 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:2312 -
C:\Users\Admin\AppData\Local\Temp\is-5B9FT.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-5B9FT.tmp\file.tmp" /SL5="$C01CA,864152,51712,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:2952 -
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:2704 -
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\9zuk468wA.exe4⤵
- Executes dropped EXE
PID:1576 -
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:3540 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4624
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5e2c2e91b0e2ee026be05ef15afdd0e0d
SHA19e96ada56caf8b09d5dd3c69c94e68d1ebfd2ca9
SHA25667d1b424d220df92a76a8e215784c92aa633bccac91e0b96f60ca6cbd323030d
SHA512d8acf54663fac47c5ef6ac4626d55f37a10979d383733c28e3aaf43257b79e1044f740c59a7d3b23bd880c1fb4f330a29abe7ce81e0a8fa0538e4a71ac628edd
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Filesize
1.6MB
MD5e2c2e91b0e2ee026be05ef15afdd0e0d
SHA19e96ada56caf8b09d5dd3c69c94e68d1ebfd2ca9
SHA25667d1b424d220df92a76a8e215784c92aa633bccac91e0b96f60ca6cbd323030d
SHA512d8acf54663fac47c5ef6ac4626d55f37a10979d383733c28e3aaf43257b79e1044f740c59a7d3b23bd880c1fb4f330a29abe7ce81e0a8fa0538e4a71ac628edd
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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