Analysis
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max time kernel
90s -
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
10-01-2023 20:16
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
1.1MB
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MD5
2200204ebce3f2e6989b6db4e0708559
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SHA1
bac6e3721ba603db196c7a8fe62b02228c17b4a6
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SHA256
8a1c8d042480fed0604f237feacb36113eea56cdb091b0607491f532ce9248ad
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SHA512
345b7076cfa9e760e6fdd49987d9208e1575256a59645ca37bdafb540648487a05dbd9d24b6e7e7f336f817ea132131e434fb45d4a64871a6ab45bf58e3d20f6
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SSDEEP
24576:R20v54lUg1+uSCrpjGQT4Fu2ekgybTLt4cbLISkl5l/Hld:R2GGU4+uVr9Tlw9tkl5V
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.exe8BgCgNK.exepid process 4716 file.tmp 4728 KitFiles136.exe 1312 8BgCgNK.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 4716 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\language\is-CGIIT.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-T7G16.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-5PDH4.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-8HTRB.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-RJQK8.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-OUS48.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-E7BRT.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-K9SIG.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-E43OG.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-ICCEQ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-G88TK.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-U1MGH.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\language\is-64A1N.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-3H800.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 4720 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4728 KitFiles136.exe 4728 KitFiles136.exe 4728 KitFiles136.exe 4728 KitFiles136.exe 4728 KitFiles136.exe 4728 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4720 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 432 wrote to memory of 4716 432 file.exe file.tmp PID 432 wrote to memory of 4716 432 file.exe file.tmp PID 432 wrote to memory of 4716 432 file.exe file.tmp PID 4716 wrote to memory of 4728 4716 file.tmp KitFiles136.exe PID 4716 wrote to memory of 4728 4716 file.tmp KitFiles136.exe PID 4716 wrote to memory of 4728 4716 file.tmp KitFiles136.exe PID 4728 wrote to memory of 1312 4728 KitFiles136.exe 8BgCgNK.exe PID 4728 wrote to memory of 1312 4728 KitFiles136.exe 8BgCgNK.exe PID 4728 wrote to memory of 1312 4728 KitFiles136.exe 8BgCgNK.exe PID 4728 wrote to memory of 3696 4728 KitFiles136.exe cmd.exe PID 4728 wrote to memory of 3696 4728 KitFiles136.exe cmd.exe PID 4728 wrote to memory of 3696 4728 KitFiles136.exe cmd.exe PID 3696 wrote to memory of 4720 3696 cmd.exe taskkill.exe PID 3696 wrote to memory of 4720 3696 cmd.exe taskkill.exe PID 3696 wrote to memory of 4720 3696 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:432 -
C:\Users\Admin\AppData\Local\Temp\is-S5H06.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-S5H06.tmp\file.tmp" /SL5="$B01D8,918595,51712,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:4716 -
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:4728 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\8BgCgNK.exe4⤵
- Executes dropped EXE
PID:1312 -
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:3696 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4720
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.7MB
MD5b617de7cc6a6275762cae1147e465414
SHA16c1a8c438bd8c4f094179a6b13224835884bd9c9
SHA256803a3e54ffe40c74cafa95aa62a77e335eb9ac97dd7aae762380a9be6593eff2
SHA512e838a8c5b9916fa86fcd3776195a34361a7572b2c9186685b75d259a24c2e63f13040a4fc8a05b690671d3b1ff341dd3578f4f53887fb97d2ca51464a79d8859
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Filesize
1.7MB
MD5b617de7cc6a6275762cae1147e465414
SHA16c1a8c438bd8c4f094179a6b13224835884bd9c9
SHA256803a3e54ffe40c74cafa95aa62a77e335eb9ac97dd7aae762380a9be6593eff2
SHA512e838a8c5b9916fa86fcd3776195a34361a7572b2c9186685b75d259a24c2e63f13040a4fc8a05b690671d3b1ff341dd3578f4f53887fb97d2ca51464a79d8859
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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