Analysis
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max time kernel
91s -
max time network
146s -
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 10:17
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
5b83bf855019ed25fdff053e3328156f
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SHA1
c5f28311c239d5eeee6a6ce1caf946b4b08a2f33
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SHA256
fd73f0045f8d52d8c353c0624f8bb0c880e0df30fade5978d32280d109f579f2
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SHA512
7cd2ac79b94f5d8a2192cb042c88b9b4028cadce9676579f71acc0938111c6ddb06bdb3ecb022646edc8c0260220245274e14c7ee3798199f4048e6420292a80
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SSDEEP
24576:R20hNiO1gCsjUo/sFWOfqeyDlkOQ31vavkvN7GefvB8Z0Skl5l/Hld:R2vOpsjV0FRuib1iMl7hHy4l5V
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.exeIOGH0sCj6LCLRc.exepid process 4872 file.tmp 4076 KitFiles136.exe 3196 IOGH0sCj6LCLRc.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 4872 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-L2I9H.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-NT034.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-R8EU9.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-E4TQC.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-3BHEH.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-1TLQQ.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-5ME2A.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-VHJ2H.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-47999.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-FRP9O.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-MPCHT.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-4FOET.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-ENRAP.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-VQFNA.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 2504 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4076 KitFiles136.exe 4076 KitFiles136.exe 4076 KitFiles136.exe 4076 KitFiles136.exe 4076 KitFiles136.exe 4076 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 2504 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4488 wrote to memory of 4872 4488 file.exe file.tmp PID 4488 wrote to memory of 4872 4488 file.exe file.tmp PID 4488 wrote to memory of 4872 4488 file.exe file.tmp PID 4872 wrote to memory of 4076 4872 file.tmp KitFiles136.exe PID 4872 wrote to memory of 4076 4872 file.tmp KitFiles136.exe PID 4872 wrote to memory of 4076 4872 file.tmp KitFiles136.exe PID 4076 wrote to memory of 3196 4076 KitFiles136.exe IOGH0sCj6LCLRc.exe PID 4076 wrote to memory of 3196 4076 KitFiles136.exe IOGH0sCj6LCLRc.exe PID 4076 wrote to memory of 3196 4076 KitFiles136.exe IOGH0sCj6LCLRc.exe PID 4076 wrote to memory of 3892 4076 KitFiles136.exe cmd.exe PID 4076 wrote to memory of 3892 4076 KitFiles136.exe cmd.exe PID 4076 wrote to memory of 3892 4076 KitFiles136.exe cmd.exe PID 3892 wrote to memory of 2504 3892 cmd.exe taskkill.exe PID 3892 wrote to memory of 2504 3892 cmd.exe taskkill.exe PID 3892 wrote to memory of 2504 3892 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:4488 -
C:\Users\Admin\AppData\Local\Temp\is-8IQBB.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-8IQBB.tmp\file.tmp" /SL5="$A0170,883070,51712,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:4872 -
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:4076 -
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\IOGH0sCj6LCLRc.exe4⤵
- Executes dropped EXE
PID:3196 -
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:3892 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2504
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5b124fa84e6b12e6a27ed738b85a48f78
SHA1f6af6ccb0c6d104fb57873fdf828bc983e28fdb8
SHA25652a4e0892706e4c67d8b93f9e6bd16f2789202571c1aa1b0935065522d28e86e
SHA5125fc4729d5053d9e742316a8dd0e438534301c18d103ef546327ab178b3eb2e25ad6003ba7b93f8327524976868923d5f515874f56b2ff331d14fd0add360c91d
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Filesize
1.6MB
MD5b124fa84e6b12e6a27ed738b85a48f78
SHA1f6af6ccb0c6d104fb57873fdf828bc983e28fdb8
SHA25652a4e0892706e4c67d8b93f9e6bd16f2789202571c1aa1b0935065522d28e86e
SHA5125fc4729d5053d9e742316a8dd0e438534301c18d103ef546327ab178b3eb2e25ad6003ba7b93f8327524976868923d5f515874f56b2ff331d14fd0add360c91d
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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