Analysis
-
max time kernel
77s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
29/12/2022, 12:23
Static task
static1
Behavioral task
behavioral1
Sample
aad7787a0a697a883ada1a7e82ca9050.exe
Resource
win7-20220812-en
General
-
Target
aad7787a0a697a883ada1a7e82ca9050.exe
-
Size
1.9MB
-
MD5
aad7787a0a697a883ada1a7e82ca9050
-
SHA1
ad8b712f43a7f9847fcf7a705a8e3274041116fb
-
SHA256
40d054629a498bc0d0d9f21d241d719da13b6d873aa6ad1dcb7ef95c3170d620
-
SHA512
27ec87c05933bf0e6ac116c1d9048d8fa0fced4595abba267a5a700565cac4e8c197212cd89633866aeda1d65697f8ef906c9f8f0cd8ea3bfa5b916f4c4e7163
-
SSDEEP
49152:oivUC1KsdLBlgMn1/oqE1hGzsO/TLu7FlaBSX9SNG:oiM8KslBlJoqEuLcA0B
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
-
Executes dropped EXE 3 IoCs
pid Process 4736 is-PLVTS.tmp 4340 SplitFiles124.exe 2700 WWCIsnXXe.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation SplitFiles124.exe -
Loads dropped DLL 1 IoCs
pid Process 4736 is-PLVTS.tmp -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Drops file in Program Files directory 17 IoCs
description ioc Process File created C:\Program Files (x86)\Split Files\language\is-3171G.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-LIBAL.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-MD8CS.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\is-APIFH.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\is-7TI4R.tmp is-PLVTS.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles124.exe is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-MNIB6.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-T55HG.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\is-DBOCS.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\is-KHVT4.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-9A0TT.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-ECDE5.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-LSU4S.tmp is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\language\is-28TK4.tmp is-PLVTS.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-PLVTS.tmp File created C:\Program Files (x86)\Split Files\is-JMIP3.tmp is-PLVTS.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Kills process with taskkill 1 IoCs
pid Process 4152 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4340 SplitFiles124.exe 4340 SplitFiles124.exe 4340 SplitFiles124.exe 4340 SplitFiles124.exe 4340 SplitFiles124.exe 4340 SplitFiles124.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4152 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1712 wrote to memory of 4736 1712 aad7787a0a697a883ada1a7e82ca9050.exe 81 PID 1712 wrote to memory of 4736 1712 aad7787a0a697a883ada1a7e82ca9050.exe 81 PID 1712 wrote to memory of 4736 1712 aad7787a0a697a883ada1a7e82ca9050.exe 81 PID 4736 wrote to memory of 4340 4736 is-PLVTS.tmp 82 PID 4736 wrote to memory of 4340 4736 is-PLVTS.tmp 82 PID 4736 wrote to memory of 4340 4736 is-PLVTS.tmp 82 PID 4340 wrote to memory of 2700 4340 SplitFiles124.exe 83 PID 4340 wrote to memory of 2700 4340 SplitFiles124.exe 83 PID 4340 wrote to memory of 2700 4340 SplitFiles124.exe 83 PID 4340 wrote to memory of 3596 4340 SplitFiles124.exe 91 PID 4340 wrote to memory of 3596 4340 SplitFiles124.exe 91 PID 4340 wrote to memory of 3596 4340 SplitFiles124.exe 91 PID 3596 wrote to memory of 4152 3596 cmd.exe 93 PID 3596 wrote to memory of 4152 3596 cmd.exe 93 PID 3596 wrote to memory of 4152 3596 cmd.exe 93
Processes
-
C:\Users\Admin\AppData\Local\Temp\aad7787a0a697a883ada1a7e82ca9050.exe"C:\Users\Admin\AppData\Local\Temp\aad7787a0a697a883ada1a7e82ca9050.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1712 -
C:\Users\Admin\AppData\Local\Temp\is-FKQNJ.tmp\is-PLVTS.tmp"C:\Users\Admin\AppData\Local\Temp\is-FKQNJ.tmp\is-PLVTS.tmp" /SL4 $701CA "C:\Users\Admin\AppData\Local\Temp\aad7787a0a697a883ada1a7e82ca9050.exe" 1781150 967682⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4736 -
C:\Program Files (x86)\Split Files\SplitFiles124.exe"C:\Program Files (x86)\Split Files\SplitFiles124.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4340 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\WWCIsnXXe.exe4⤵
- Executes dropped EXE
PID:2700
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles124.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles124.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:3596 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles124.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4152
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
3.3MB
MD506fec979118967cee23ba7b10e41efd5
SHA1ac1e55d9058671eb34af7a3b6bdfdea9b74125f6
SHA2568c2aad572700b50f3b3792b4a1827ed036e68502f02d1230e19cc4d3896a25df
SHA512d7fa49c0e92bdaa430a31ae52cfd384f804f7753a1ec9c52d981ba0bcccae6258563fff3faa03ac1bb849f249d88514d10a75e06c5e98f12cd0264023750db85
-
Filesize
3.3MB
MD506fec979118967cee23ba7b10e41efd5
SHA1ac1e55d9058671eb34af7a3b6bdfdea9b74125f6
SHA2568c2aad572700b50f3b3792b4a1827ed036e68502f02d1230e19cc4d3896a25df
SHA512d7fa49c0e92bdaa430a31ae52cfd384f804f7753a1ec9c52d981ba0bcccae6258563fff3faa03ac1bb849f249d88514d10a75e06c5e98f12cd0264023750db85
-
Filesize
688KB
MD5807603f3a565337ee2ac3e819b25ee58
SHA15cc4e6c82fbdda6697a1117561f23731d51baacd
SHA256682dd0a4ea6b0d763a1adb14def8657518a4879e454c7ece43505910dd448423
SHA512252831b5fe5869c0abd25f246fe161e5b8218e9c54231fa9c5c78d5ffe6ff0c8e3d1f9ea3316f74b47ce372f1f8f06edd8e147711633f4028acd0cf7d5cd946d
-
Filesize
688KB
MD5807603f3a565337ee2ac3e819b25ee58
SHA15cc4e6c82fbdda6697a1117561f23731d51baacd
SHA256682dd0a4ea6b0d763a1adb14def8657518a4879e454c7ece43505910dd448423
SHA512252831b5fe5869c0abd25f246fe161e5b8218e9c54231fa9c5c78d5ffe6ff0c8e3d1f9ea3316f74b47ce372f1f8f06edd8e147711633f4028acd0cf7d5cd946d
-
Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c