Analysis
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max time kernel
89s -
max time network
149s -
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 13:02
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
General
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Target
file.exe
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Size
1.1MB
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MD5
1ea1db34446a49a5085b77779f3bb4f1
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SHA1
68a630b25dfb0c6791a67b9d80d4a923285a2619
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SHA256
11eaa39127adc0ab330219741d818d9fb4b7adc775bfb3cb03699d95d5a9dcf8
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SHA512
8761a40f49e181aa9ef3036221b513e7df5d2f2a689776eeca4c71f3c8a9122d29ad727ce69c5b27ac13283fed77d604c2d320f03c79f0d61b3b2df0f60274f6
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SSDEEP
24576:R20Ad20sUpNnz9db6cXh8PHHxtozig7Skl5l/Hld:R2r4uhdrX+PHxtoGol5V
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.exen0eDS.exepid process 1932 file.tmp 1900 KitFiles136.exe 5104 n0eDS.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 1932 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-UQBBK.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-INM41.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-ME3VM.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-VQA2M.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-CIDAS.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-TEMCU.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-788K6.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-HOBRH.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-SUS4G.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-S2GN5.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-2K17U.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\is-M3P1A.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-JJTI0.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-TA8QQ.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 3088 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 1900 KitFiles136.exe 1900 KitFiles136.exe 1900 KitFiles136.exe 1900 KitFiles136.exe 1900 KitFiles136.exe 1900 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3088 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4296 wrote to memory of 1932 4296 file.exe file.tmp PID 4296 wrote to memory of 1932 4296 file.exe file.tmp PID 4296 wrote to memory of 1932 4296 file.exe file.tmp PID 1932 wrote to memory of 1900 1932 file.tmp KitFiles136.exe PID 1932 wrote to memory of 1900 1932 file.tmp KitFiles136.exe PID 1932 wrote to memory of 1900 1932 file.tmp KitFiles136.exe PID 1900 wrote to memory of 5104 1900 KitFiles136.exe n0eDS.exe PID 1900 wrote to memory of 5104 1900 KitFiles136.exe n0eDS.exe PID 1900 wrote to memory of 5104 1900 KitFiles136.exe n0eDS.exe PID 1900 wrote to memory of 3008 1900 KitFiles136.exe cmd.exe PID 1900 wrote to memory of 3008 1900 KitFiles136.exe cmd.exe PID 1900 wrote to memory of 3008 1900 KitFiles136.exe cmd.exe PID 3008 wrote to memory of 3088 3008 cmd.exe taskkill.exe PID 3008 wrote to memory of 3088 3008 cmd.exe taskkill.exe PID 3008 wrote to memory of 3088 3008 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:4296 -
C:\Users\Admin\AppData\Local\Temp\is-IAG83.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-IAG83.tmp\file.tmp" /SL5="$80030,865597,51712,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:1932 -
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:1900 -
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\n0eDS.exe4⤵
- Executes dropped EXE
PID:5104 -
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:3008 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3088
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.6MB
MD51b51b6c47a3352667010cb0c9286049f
SHA18fa778f622494594b919da888367545a92017263
SHA256d84e1b3aa452fab7d6c3fdcf9dcefb8b717a24da54a8ede07e321d86b4de1f27
SHA51207e654c5018cbc1baf7a0eb11ab00d8e5631aad99e25b9070b0a5d99c7a495d13f4ce735dc46b2cd3d80b0aeed3cc30da3d2e6066ce3e031ac35758ff595572e
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Filesize
1.6MB
MD51b51b6c47a3352667010cb0c9286049f
SHA18fa778f622494594b919da888367545a92017263
SHA256d84e1b3aa452fab7d6c3fdcf9dcefb8b717a24da54a8ede07e321d86b4de1f27
SHA51207e654c5018cbc1baf7a0eb11ab00d8e5631aad99e25b9070b0a5d99c7a495d13f4ce735dc46b2cd3d80b0aeed3cc30da3d2e6066ce3e031ac35758ff595572e
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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