Analysis
-
max time kernel
91s -
max time network
153s -
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 19:47
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
-
Target
file.exe
-
Size
1.1MB
-
MD5
1d68569c35fe83a6757aaa19953871be
-
SHA1
8dfdee1d4e6876c41bb656a99c129f73aa40ae40
-
SHA256
1387d634fa1ace36b555b559263e2484fdaf2acf03c816957b61aeba82da103e
-
SHA512
20b14ae5b573d87c8de7d74da5f5f28ca272a62bf5e8cc422fb59448c4487c698196f67aa316e8462c824543bef48e68d5ca76b675df95d2551d08d9c706d21b
-
SSDEEP
24576:R20r4L9rDikvVd6nuk6mRbpCUA3enby8IPJB6Uy6OSkl5l/Hld:R2f9XbrxkcnebyHJhy6Ml5V
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
-
Executes dropped EXE 3 IoCs
Processes:
file.tmpKitFiles136.exeJlZHw7oYnwh.exepid process 4936 file.tmp 4580 KitFiles136.exe 2860 JlZHw7oYnwh.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 4936 file.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
Processes:
file.tmpdescription ioc process File created C:\Program Files (x86)\Split Files\is-TR3MU.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-B5DOU.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-FE355.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-IP39H.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-UFNQJ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-KVLL4.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-EI215.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-6KV4H.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\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\language\is-BBH31.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-S51MR.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-ITRCH.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-6DEST.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-O8MO0.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-UU35N.tmp file.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
Processes:
taskkill.exepid process 492 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4580 KitFiles136.exe 4580 KitFiles136.exe 4580 KitFiles136.exe 4580 KitFiles136.exe 4580 KitFiles136.exe 4580 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 492 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 3372 wrote to memory of 4936 3372 file.exe file.tmp PID 3372 wrote to memory of 4936 3372 file.exe file.tmp PID 3372 wrote to memory of 4936 3372 file.exe file.tmp PID 4936 wrote to memory of 4580 4936 file.tmp KitFiles136.exe PID 4936 wrote to memory of 4580 4936 file.tmp KitFiles136.exe PID 4936 wrote to memory of 4580 4936 file.tmp KitFiles136.exe PID 4580 wrote to memory of 2860 4580 KitFiles136.exe JlZHw7oYnwh.exe PID 4580 wrote to memory of 2860 4580 KitFiles136.exe JlZHw7oYnwh.exe PID 4580 wrote to memory of 2860 4580 KitFiles136.exe JlZHw7oYnwh.exe PID 4580 wrote to memory of 4528 4580 KitFiles136.exe cmd.exe PID 4580 wrote to memory of 4528 4580 KitFiles136.exe cmd.exe PID 4580 wrote to memory of 4528 4580 KitFiles136.exe cmd.exe PID 4528 wrote to memory of 492 4528 cmd.exe taskkill.exe PID 4528 wrote to memory of 492 4528 cmd.exe taskkill.exe PID 4528 wrote to memory of 492 4528 cmd.exe taskkill.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3372 -
C:\Users\Admin\AppData\Local\Temp\is-EDQA1.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-EDQA1.tmp\file.tmp" /SL5="$7005E,889384,51712,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:4936 -
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:4580 -
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\JlZHw7oYnwh.exe4⤵
- Executes dropped EXE
PID:2860 -
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:4528 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:492
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1.6MB
MD57a1b35288ea46e2ed61d38a457d8959f
SHA16aeaae836ab422503493a2bfcf3f8d4e92e975df
SHA256dd0c6a6681c98768b0413a3d0d261fda7160f1a599c13ec3af33fef009fc66d9
SHA51213b0cb2cc0746ecd34eeff4f556c16d4658b5696808d0eff60af44cb4b967e6298bef376b0b7f16238b9a025e60164049c9bed051350c827313b3bcd033ad4b0
-
Filesize
1.6MB
MD57a1b35288ea46e2ed61d38a457d8959f
SHA16aeaae836ab422503493a2bfcf3f8d4e92e975df
SHA256dd0c6a6681c98768b0413a3d0d261fda7160f1a599c13ec3af33fef009fc66d9
SHA51213b0cb2cc0746ecd34eeff4f556c16d4658b5696808d0eff60af44cb4b967e6298bef376b0b7f16238b9a025e60164049c9bed051350c827313b3bcd033ad4b0
-
Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
-
Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
-
Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c