Analysis
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max time kernel
91s -
max time network
140s -
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 20:47
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
8192cac8bbaa964230a593fcbc04e235
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SHA1
a7cf469af932294b0048f4a65c7d5dc43e5cc860
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SHA256
0e22c61847bddcb4c5c90b9895aa4782d1f0eabbcb3cd76b0132ad79dc6b707a
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SHA512
687c6dd4ea94b067032e94f3887af61f4f16dde5ef8dfedc7cbe70d4b1d00eb3309f275727fc9fe1f2519b39f4935a8e1c6d2e6d0d223cf581b3f76d38f3ee90
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SSDEEP
24576:R20kqsW1OWHp1Wbzar6rZYYGFJpC35qocSkl5l/Hld:R2kDoWfAar6NhAoql5V
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.exedLS79syS.exepid process 4856 file.tmp 4628 KitFiles136.exe 4640 dLS79syS.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 4856 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-5BLQ1.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-52EO2.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-TP67F.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-BLPPN.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-9ANP4.tmp file.tmp File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-97D79.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-48QFA.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-R1DQO.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\is-AAC6I.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-PT7D3.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-NBRLE.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-DFVNA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-PQL5Q.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-RTVUG.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 4448 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4628 KitFiles136.exe 4628 KitFiles136.exe 4628 KitFiles136.exe 4628 KitFiles136.exe 4628 KitFiles136.exe 4628 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4448 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 3124 wrote to memory of 4856 3124 file.exe file.tmp PID 3124 wrote to memory of 4856 3124 file.exe file.tmp PID 3124 wrote to memory of 4856 3124 file.exe file.tmp PID 4856 wrote to memory of 4628 4856 file.tmp KitFiles136.exe PID 4856 wrote to memory of 4628 4856 file.tmp KitFiles136.exe PID 4856 wrote to memory of 4628 4856 file.tmp KitFiles136.exe PID 4628 wrote to memory of 4640 4628 KitFiles136.exe dLS79syS.exe PID 4628 wrote to memory of 4640 4628 KitFiles136.exe dLS79syS.exe PID 4628 wrote to memory of 4640 4628 KitFiles136.exe dLS79syS.exe PID 4628 wrote to memory of 1056 4628 KitFiles136.exe cmd.exe PID 4628 wrote to memory of 1056 4628 KitFiles136.exe cmd.exe PID 4628 wrote to memory of 1056 4628 KitFiles136.exe cmd.exe PID 1056 wrote to memory of 4448 1056 cmd.exe taskkill.exe PID 1056 wrote to memory of 4448 1056 cmd.exe taskkill.exe PID 1056 wrote to memory of 4448 1056 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:3124 -
C:\Users\Admin\AppData\Local\Temp\is-5V7RL.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-5V7RL.tmp\file.tmp" /SL5="$801C4,870385,51712,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:4856 -
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:4628 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\dLS79syS.exe4⤵
- Executes dropped EXE
PID:4640 -
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:1056 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4448
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5a56819d8a1d61a1c0a9e648a1b81896d
SHA11664cc3eb4960b1b7af9d1ba78683d0fdb84ca0f
SHA256382440f343fb73dde568855372dadc457979334ad87242e6c0e9205167538e2e
SHA5126f2c903b7f2e616d5ac7bc23440d11b0abd2c8c76e2f7ece7f625a6d4949a112debde5d0d19378a8289b6e3a7fc0ebae651c73066585279b6dad9ff07b1edd7e
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Filesize
1.6MB
MD5a56819d8a1d61a1c0a9e648a1b81896d
SHA11664cc3eb4960b1b7af9d1ba78683d0fdb84ca0f
SHA256382440f343fb73dde568855372dadc457979334ad87242e6c0e9205167538e2e
SHA5126f2c903b7f2e616d5ac7bc23440d11b0abd2c8c76e2f7ece7f625a6d4949a112debde5d0d19378a8289b6e3a7fc0ebae651c73066585279b6dad9ff07b1edd7e
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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