Analysis
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max time kernel
146s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2023 14:16
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
0f2f19aa9f0e608f028a9f491de8ab02
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SHA1
97c76b4ba28c21c1a2d20ee34168f4bc8dfa17dc
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SHA256
8db7101f2a59a4502f8baea68d4d5576f5ac0f4690b5690beb7b3a0a5e0496f0
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SHA512
e7458eecbb88382a26ee834c92918f408b9d81a06c25c8b76ee4f1d11539a7a2a1face4ba066cc8bb328154c322019b094857dcb65d2ad21d4e91c261f0ed9e7
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SSDEEP
24576:R20HGjvh2nxzvn4mPILWXyZ100/9XraoztV3xSkl5l/Hld:R2HMntv7EWCZ10sXraozr3Vl5V
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.exetepIPJM.exepid process 2652 file.tmp 3416 KitFiles136.exe 2536 tepIPJM.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 2652 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-PT2G7.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-6S8SF.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-BMB53.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-LUGNT.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-5994R.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-G0PMH.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-KKK3J.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-LDAP7.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-BFPJB.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-NH4O6.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-KH1AJ.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat 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\language\is-END6R.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-V11N6.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-4V0BP.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 1256 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 3416 KitFiles136.exe 3416 KitFiles136.exe 3416 KitFiles136.exe 3416 KitFiles136.exe 3416 KitFiles136.exe 3416 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 1256 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4816 wrote to memory of 2652 4816 file.exe file.tmp PID 4816 wrote to memory of 2652 4816 file.exe file.tmp PID 4816 wrote to memory of 2652 4816 file.exe file.tmp PID 2652 wrote to memory of 3416 2652 file.tmp KitFiles136.exe PID 2652 wrote to memory of 3416 2652 file.tmp KitFiles136.exe PID 2652 wrote to memory of 3416 2652 file.tmp KitFiles136.exe PID 3416 wrote to memory of 2536 3416 KitFiles136.exe tepIPJM.exe PID 3416 wrote to memory of 2536 3416 KitFiles136.exe tepIPJM.exe PID 3416 wrote to memory of 2536 3416 KitFiles136.exe tepIPJM.exe PID 3416 wrote to memory of 4832 3416 KitFiles136.exe cmd.exe PID 3416 wrote to memory of 4832 3416 KitFiles136.exe cmd.exe PID 3416 wrote to memory of 4832 3416 KitFiles136.exe cmd.exe PID 4832 wrote to memory of 1256 4832 cmd.exe taskkill.exe PID 4832 wrote to memory of 1256 4832 cmd.exe taskkill.exe PID 4832 wrote to memory of 1256 4832 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:4816 -
C:\Users\Admin\AppData\Local\Temp\is-0T107.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-0T107.tmp\file.tmp" /SL5="$801BE,940139,51712,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:2652 -
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:3416 -
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\tepIPJM.exe4⤵
- Executes dropped EXE
PID:2536 -
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:4832 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1256
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.7MB
MD591d9e8c7b095d4e56b868f930df3ded4
SHA1c2700bd1fabc88c8db97ee13887cf38104681d12
SHA256cf1dfb0c58c83b2a6a34d22e7a4226efc3f1e8c7e1e724f82556254eb569574f
SHA51254035d3f273cd0181163b3473bdadad62f7fbc02f28c44ec5fe0d02ddc7e8d5e85d0af4953d85b1fbfc3b9d72ab66f8b80a9a8d6260964c4c370688d46088469
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Filesize
1.7MB
MD591d9e8c7b095d4e56b868f930df3ded4
SHA1c2700bd1fabc88c8db97ee13887cf38104681d12
SHA256cf1dfb0c58c83b2a6a34d22e7a4226efc3f1e8c7e1e724f82556254eb569574f
SHA51254035d3f273cd0181163b3473bdadad62f7fbc02f28c44ec5fe0d02ddc7e8d5e85d0af4953d85b1fbfc3b9d72ab66f8b80a9a8d6260964c4c370688d46088469
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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