Analysis
-
max time kernel
50s -
max time network
140s -
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 06:47
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
-
Target
file.exe
-
Size
1.1MB
-
MD5
54dbe37ae557f3fabab6e75b02148109
-
SHA1
2686ef3d3aeb3ca80f44782d4ada27b174a1bf79
-
SHA256
69d03b41e1e490d7370330057004ccd9cf80c85d50b07bb1bca194fc85b27a56
-
SHA512
aa1a7f5ec91b55f000641beaac721a1edfbc85d3e46e8126e0ed5fd2dcb25cead7f47d7e5c533f9760573f4e1245ba21479f2ab380aedc7b5a9b296dfe9539b5
-
SSDEEP
24576:R20TiUTvG72VPJjVgYczoG8eqgkmrRNmZ8Qb/VSkl5l/Hld:R2BCGmJeh9kmiOe/Bl5V
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
-
Executes dropped EXE 3 IoCs
Processes:
file.tmpKitFiles136.exeu2fXWK.exepid process 3008 file.tmp 2192 KitFiles136.exe 1484 u2fXWK.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 3008 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-JTFJ8.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-OAPQM.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-K1H1S.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-2USCR.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-2LM7Q.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-FM43S.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-NHCF4.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-P5HMB.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-05DAR.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-T3GA4.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-HUIPE.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\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-A3B0R.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-JP943.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-C25PR.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\KitFiles136.exe 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 616 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 2192 KitFiles136.exe 2192 KitFiles136.exe 2192 KitFiles136.exe 2192 KitFiles136.exe 2192 KitFiles136.exe 2192 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 616 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 1296 wrote to memory of 3008 1296 file.exe file.tmp PID 1296 wrote to memory of 3008 1296 file.exe file.tmp PID 1296 wrote to memory of 3008 1296 file.exe file.tmp PID 3008 wrote to memory of 2192 3008 file.tmp KitFiles136.exe PID 3008 wrote to memory of 2192 3008 file.tmp KitFiles136.exe PID 3008 wrote to memory of 2192 3008 file.tmp KitFiles136.exe PID 2192 wrote to memory of 1484 2192 KitFiles136.exe u2fXWK.exe PID 2192 wrote to memory of 1484 2192 KitFiles136.exe u2fXWK.exe PID 2192 wrote to memory of 1484 2192 KitFiles136.exe u2fXWK.exe PID 2192 wrote to memory of 4388 2192 KitFiles136.exe cmd.exe PID 2192 wrote to memory of 4388 2192 KitFiles136.exe cmd.exe PID 2192 wrote to memory of 4388 2192 KitFiles136.exe cmd.exe PID 4388 wrote to memory of 616 4388 cmd.exe taskkill.exe PID 4388 wrote to memory of 616 4388 cmd.exe taskkill.exe PID 4388 wrote to memory of 616 4388 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:1296 -
C:\Users\Admin\AppData\Local\Temp\is-SJK5J.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-SJK5J.tmp\file.tmp" /SL5="$9002C,885357,51712,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:3008 -
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:2192 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\u2fXWK.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:4388 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:616
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1.6MB
MD5728702fb5abde2da94eb33f44c4f9ce4
SHA1cc93dd52fc1b1e582ddb05a4cca08a0246bc6dcd
SHA256f147ead16fe6aa5dec309c2a6799ee2f7ab527794b3bcf2f1a3622124e21353a
SHA512524b9b5fdfb54205109efc2800159339ad87b2b82e64ab8d878278474148f4c4bf76a81cc1eb9a78f3a6c7ab17209e03ce22d370e68767afb3feb901608314bc
-
Filesize
1.6MB
MD5728702fb5abde2da94eb33f44c4f9ce4
SHA1cc93dd52fc1b1e582ddb05a4cca08a0246bc6dcd
SHA256f147ead16fe6aa5dec309c2a6799ee2f7ab527794b3bcf2f1a3622124e21353a
SHA512524b9b5fdfb54205109efc2800159339ad87b2b82e64ab8d878278474148f4c4bf76a81cc1eb9a78f3a6c7ab17209e03ce22d370e68767afb3feb901608314bc
-
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