Analysis
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max time kernel
88s -
max time network
152s -
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 14:46
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
1.0MB
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MD5
a95ae4a3f12b79b2264be0f82f31e696
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SHA1
6bf7c80bdca476b5fa2758afda0982b1926e3f6d
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SHA256
bed6130082fa125e8a11f5ef0f1a7906d9aa703e020c70c335a018ed6cc669d1
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SHA512
973d898fb8a0c1b77270d84e89d30ad49583a00044a5c4a1d5ac8032a453f8f2b6b7f5b9016561497ddbf0d438e44e596e0f7b79aba5e8fa9bc881919f6718ee
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SSDEEP
24576:R20HfaVhOQfMtVmEgLYvLO+HwTybmgkWtlx1sKk243Skl5l/Hld:R22mM3zgLYvLnwTybLkWfzkrl5V
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.exeMYq2l.exepid process 4784 file.tmp 4840 KitFiles136.exe 1196 MYq2l.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 4784 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-2BC6K.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-5S1QB.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-IM1RV.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-7E6V0.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-T233F.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-36NAB.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-RMJSR.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-B2SPO.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-PHB4K.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-QA543.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-O0M9V.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-LNTPA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-FLGC9.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\is-FA4FD.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 4116 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4840 KitFiles136.exe 4840 KitFiles136.exe 4840 KitFiles136.exe 4840 KitFiles136.exe 4840 KitFiles136.exe 4840 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4116 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4604 wrote to memory of 4784 4604 file.exe file.tmp PID 4604 wrote to memory of 4784 4604 file.exe file.tmp PID 4604 wrote to memory of 4784 4604 file.exe file.tmp PID 4784 wrote to memory of 4840 4784 file.tmp KitFiles136.exe PID 4784 wrote to memory of 4840 4784 file.tmp KitFiles136.exe PID 4784 wrote to memory of 4840 4784 file.tmp KitFiles136.exe PID 4840 wrote to memory of 1196 4840 KitFiles136.exe MYq2l.exe PID 4840 wrote to memory of 1196 4840 KitFiles136.exe MYq2l.exe PID 4840 wrote to memory of 1196 4840 KitFiles136.exe MYq2l.exe PID 4840 wrote to memory of 3480 4840 KitFiles136.exe cmd.exe PID 4840 wrote to memory of 3480 4840 KitFiles136.exe cmd.exe PID 4840 wrote to memory of 3480 4840 KitFiles136.exe cmd.exe PID 3480 wrote to memory of 4116 3480 cmd.exe taskkill.exe PID 3480 wrote to memory of 4116 3480 cmd.exe taskkill.exe PID 3480 wrote to memory of 4116 3480 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:4604 -
C:\Users\Admin\AppData\Local\Temp\is-MHVJT.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-MHVJT.tmp\file.tmp" /SL5="$A0032,851609,51712,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:4784 -
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:4840 -
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\MYq2l.exe4⤵
- Executes dropped EXE
PID:1196 -
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:3480 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4116
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5e7caf24fbaf256c9457a9a35ed0d1a34
SHA1801782162074e6df9909472b8067701860bd6a09
SHA2567d8b519289e6bb5593270e776c668a0ef0d0f9b3b31475fc62d7cb112f65706e
SHA5128e7da05a2d1b12d68fb02c3178f9cb9457a6bb16a6855681fb0e449b85ad705cd76f16363c31a19184252fdcbba54aa256c22128207546a971e128917df1c30e
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Filesize
1.6MB
MD5e7caf24fbaf256c9457a9a35ed0d1a34
SHA1801782162074e6df9909472b8067701860bd6a09
SHA2567d8b519289e6bb5593270e776c668a0ef0d0f9b3b31475fc62d7cb112f65706e
SHA5128e7da05a2d1b12d68fb02c3178f9cb9457a6bb16a6855681fb0e449b85ad705cd76f16363c31a19184252fdcbba54aa256c22128207546a971e128917df1c30e
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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