Analysis
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max time kernel
111s -
max time network
131s -
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 05:31
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
1.2MB
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MD5
0b7009e914c74632b75d77264a183a5b
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SHA1
61463df0e4c92de87633c0fd93944f2078309a8a
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SHA256
c349b85e0403676346aa59fc646e38519352254898b157e7a029516d9caebe33
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SHA512
615c9a128dbefde1a88dd989fd466d128e807c1471b44d7b25f73779959bb14d078951d61e8dfe4a30153f4dc53de4d7b3c4d096adf829f47f34864474148a11
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SSDEEP
24576:R20oPYF4XYo0nO9xDhgHRyEsOLMMcOtCRwHdGAMIRZaEu9qISfY5AUSkl5l/Hld:R222oo0O9UHcuCiaT/b5Pl5V
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.exeeU5Sg.exepid process 1540 file.tmp 4944 KitFiles136.exe 1412 eU5Sg.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 1540 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-SHAEF.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-835EJ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-V9IVT.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\is-FBOSJ.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-MNM1N.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-OOT7F.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-U8LKO.tmp file.tmp File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\language\is-3STGE.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-DU897.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-PL81R.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\language\is-1IOCF.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-HLERO.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-1EE3C.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-UHS3V.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 3872 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe 4944 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3872 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4260 wrote to memory of 1540 4260 file.exe file.tmp PID 4260 wrote to memory of 1540 4260 file.exe file.tmp PID 4260 wrote to memory of 1540 4260 file.exe file.tmp PID 1540 wrote to memory of 4944 1540 file.tmp KitFiles136.exe PID 1540 wrote to memory of 4944 1540 file.tmp KitFiles136.exe PID 1540 wrote to memory of 4944 1540 file.tmp KitFiles136.exe PID 4944 wrote to memory of 1412 4944 KitFiles136.exe eU5Sg.exe PID 4944 wrote to memory of 1412 4944 KitFiles136.exe eU5Sg.exe PID 4944 wrote to memory of 1412 4944 KitFiles136.exe eU5Sg.exe PID 4944 wrote to memory of 2776 4944 KitFiles136.exe cmd.exe PID 4944 wrote to memory of 2776 4944 KitFiles136.exe cmd.exe PID 4944 wrote to memory of 2776 4944 KitFiles136.exe cmd.exe PID 2776 wrote to memory of 3872 2776 cmd.exe taskkill.exe PID 2776 wrote to memory of 3872 2776 cmd.exe taskkill.exe PID 2776 wrote to memory of 3872 2776 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:4260 -
C:\Users\Admin\AppData\Local\Temp\is-72UU6.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-72UU6.tmp\file.tmp" /SL5="$E0056,1059530,51712,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:1540 -
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:4944 -
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\eU5Sg.exe4⤵
- Executes dropped EXE
PID:1412 -
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:2776 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3872
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.8MB
MD50c49ae802bad68b492635040502c98f1
SHA1492abb68e236a20e9d1b2e96cffc741da419f1ca
SHA256cdd9c9a3fcec22db15340673df39776459bef299758cb80166bb4315130c408d
SHA51226d5348db15505df5c8e518ee43c4391570047d32133041c598dbd7e38b5e1c32ab2bba1a725e82fb5895bbf143e2a5d7ea38a21cbdef7b3c89476a394215f62
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Filesize
1.8MB
MD50c49ae802bad68b492635040502c98f1
SHA1492abb68e236a20e9d1b2e96cffc741da419f1ca
SHA256cdd9c9a3fcec22db15340673df39776459bef299758cb80166bb4315130c408d
SHA51226d5348db15505df5c8e518ee43c4391570047d32133041c598dbd7e38b5e1c32ab2bba1a725e82fb5895bbf143e2a5d7ea38a21cbdef7b3c89476a394215f62
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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