Analysis
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max time kernel
90s -
max time network
98s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2023 18:33
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
1.2MB
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MD5
2ca9afd6621418b742f3afae4a009129
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SHA1
50d57b5da1586571ebb4946cda7c6b29bb9195a1
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SHA256
1ff520d10fec4cfdebd6f72b2aa8f3910b90eb706dd10044075599994a3a3aff
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SHA512
45764e5db0deeef07e11a095deeb511d2127bb95a2b582c010e892ddab7601f476122ebed6975fc998fae983c87b2d65e6627612fe234c8887aea2b01c3b4fbd
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SSDEEP
24576:R20VAky8Gi5svLpk5FSn0sVz9zGdZGH6h71nqQaSkl5l/Hld:R2zkr5O9kLA0sHCdZicqQgl5V
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.exeoKRGx11GAzg.exepid process 4868 file.tmp 260 KitFiles136.exe 4564 oKRGx11GAzg.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 4868 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-6D6GR.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-JILF4.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-R3T0R.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-R86MH.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-29HCJ.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-U4G51.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-EMAJ5.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-BP9MH.tmp file.tmp File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\language\is-6COIU.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\is-NNS0U.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-SCP75.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-6VKMT.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-QTJQ0.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-B8KFN.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 3720 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 260 KitFiles136.exe 260 KitFiles136.exe 260 KitFiles136.exe 260 KitFiles136.exe 260 KitFiles136.exe 260 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3720 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 1316 wrote to memory of 4868 1316 file.exe file.tmp PID 1316 wrote to memory of 4868 1316 file.exe file.tmp PID 1316 wrote to memory of 4868 1316 file.exe file.tmp PID 4868 wrote to memory of 260 4868 file.tmp KitFiles136.exe PID 4868 wrote to memory of 260 4868 file.tmp KitFiles136.exe PID 4868 wrote to memory of 260 4868 file.tmp KitFiles136.exe PID 260 wrote to memory of 4564 260 KitFiles136.exe oKRGx11GAzg.exe PID 260 wrote to memory of 4564 260 KitFiles136.exe oKRGx11GAzg.exe PID 260 wrote to memory of 4564 260 KitFiles136.exe oKRGx11GAzg.exe PID 260 wrote to memory of 1404 260 KitFiles136.exe cmd.exe PID 260 wrote to memory of 1404 260 KitFiles136.exe cmd.exe PID 260 wrote to memory of 1404 260 KitFiles136.exe cmd.exe PID 1404 wrote to memory of 3720 1404 cmd.exe taskkill.exe PID 1404 wrote to memory of 3720 1404 cmd.exe taskkill.exe PID 1404 wrote to memory of 3720 1404 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:1316 -
C:\Users\Admin\AppData\Local\Temp\is-GOV1M.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-GOV1M.tmp\file.tmp" /SL5="$D002E,1040127,51712,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:4868 -
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:260 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\oKRGx11GAzg.exe4⤵
- Executes dropped EXE
PID:4564 -
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:1404 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3720
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.8MB
MD5539e6dd04cbcb35ebb47df2744bb9629
SHA18a958c607352a2621a95bb2f6ecc04a5dfd9d8f6
SHA25696cf1709258e6d160acb75b04ffad88f9ba58119873a438c9c695df02310ea00
SHA512d787ea1473c2b36472ec18709c2a4776d6654a0f8739faf3718a9fed98a4674cf61ca925ba984c057aa3745773ab89e01bd2556353fc8e98676b5ec348ce5698
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Filesize
1.8MB
MD5539e6dd04cbcb35ebb47df2744bb9629
SHA18a958c607352a2621a95bb2f6ecc04a5dfd9d8f6
SHA25696cf1709258e6d160acb75b04ffad88f9ba58119873a438c9c695df02310ea00
SHA512d787ea1473c2b36472ec18709c2a4776d6654a0f8739faf3718a9fed98a4674cf61ca925ba984c057aa3745773ab89e01bd2556353fc8e98676b5ec348ce5698
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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