Analysis
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max time kernel
90s -
max time network
148s -
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 06:16
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
1a025469f90579ddfbf636deb5d00e6d
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SHA1
395bfa67f35a4cf7153117dcfc9e1611f25cd50e
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SHA256
6028b27b45f325390fdfa919e99696fb6ca1475df0f2e375bbc263566cc8d011
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SHA512
77138ef6c7054f368bc7e0728c3facdb6c21e2ca39d093def73e22994527123b3d421bfe4b5ffbdd227005719bcad75370fc1b9db5b01f42f666d001478c245b
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SSDEEP
24576:R20AcJ+qotzyHksJTpc0jnj4b71NzdO63PRseLM8Skl5l/Hld:R2G9isVpBjM3h/RtMKl5V
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.exe7b6LDEHiPepT.exepid process 4636 file.tmp 3996 KitFiles136.exe 1484 7b6LDEHiPepT.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 4636 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-HAF4F.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-0VNQV.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-R54VP.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-HVG15.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-B4FP5.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\language\is-J611R.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-VCIOO.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-499FN.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-QMDQN.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-STQOC.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-RATE8.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-BIOSQ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-FC9B2.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-J7TLV.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 4560 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 3996 KitFiles136.exe 3996 KitFiles136.exe 3996 KitFiles136.exe 3996 KitFiles136.exe 3996 KitFiles136.exe 3996 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4560 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 2620 wrote to memory of 4636 2620 file.exe file.tmp PID 2620 wrote to memory of 4636 2620 file.exe file.tmp PID 2620 wrote to memory of 4636 2620 file.exe file.tmp PID 4636 wrote to memory of 3996 4636 file.tmp KitFiles136.exe PID 4636 wrote to memory of 3996 4636 file.tmp KitFiles136.exe PID 4636 wrote to memory of 3996 4636 file.tmp KitFiles136.exe PID 3996 wrote to memory of 1484 3996 KitFiles136.exe 7b6LDEHiPepT.exe PID 3996 wrote to memory of 1484 3996 KitFiles136.exe 7b6LDEHiPepT.exe PID 3996 wrote to memory of 1484 3996 KitFiles136.exe 7b6LDEHiPepT.exe PID 3996 wrote to memory of 4044 3996 KitFiles136.exe cmd.exe PID 3996 wrote to memory of 4044 3996 KitFiles136.exe cmd.exe PID 3996 wrote to memory of 4044 3996 KitFiles136.exe cmd.exe PID 4044 wrote to memory of 4560 4044 cmd.exe taskkill.exe PID 4044 wrote to memory of 4560 4044 cmd.exe taskkill.exe PID 4044 wrote to memory of 4560 4044 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:2620 -
C:\Users\Admin\AppData\Local\Temp\is-147E7.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-147E7.tmp\file.tmp" /SL5="$F014C,855021,51712,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:4636 -
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:3996 -
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\7b6LDEHiPepT.exe4⤵
- Executes dropped EXE
PID:1484 -
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:4044 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4560
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5aef02b3e7402910472a8aec8b5892ba1
SHA13159f0011e764cac88a3bd79ee166ee612a80c7d
SHA25678c85a2739827e422ef34ad9c43ecb69adeca3ca01a04b2ab745783613665f1c
SHA51285c5a4bac9e6b8890eaa9bfee550750d8d40ee76dbd346b86ab36911198c89270c13ee993f85b0e50f03385864c88e118faab812ba62105e96138d1829cc165c
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Filesize
1.6MB
MD5aef02b3e7402910472a8aec8b5892ba1
SHA13159f0011e764cac88a3bd79ee166ee612a80c7d
SHA25678c85a2739827e422ef34ad9c43ecb69adeca3ca01a04b2ab745783613665f1c
SHA51285c5a4bac9e6b8890eaa9bfee550750d8d40ee76dbd346b86ab36911198c89270c13ee993f85b0e50f03385864c88e118faab812ba62105e96138d1829cc165c
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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