Analysis
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max time kernel
142s -
max time network
152s -
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 11:18
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
5f7b012c3efaa44fb1c8d93fa20be9f2
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SHA1
437c91c31278549dbc5ce301fbbcf2c534664772
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SHA256
94a59ed3c974c12c403e8f87790fb700d51d2f22e01a479dc160099152722845
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SHA512
afd5fcce442508c012fc7b90716a02f249410e7f2ac4ca9890ccbaa35eb4e11a9b667b5522b919074963f00cd40ccb5b6c3fb3b656d8bf20806cbfab88166fbd
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SSDEEP
24576:R20BBpEp105zP1A44XgbeVkQlQknQ59Hw7kvKZSSkl5l/Hld:R2qg10NdA/X7VkQlQAQ9H/v2ol5V
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.exeDSztAsgM.exepid process 1960 file.tmp 4496 KitFiles136.exe 1364 DSztAsgM.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 1960 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-N4813.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-KTG74.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-MGPTS.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-KI741.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-K45JI.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-NDPHV.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-13IMK.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\language\is-DI2LH.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-HB484.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-LMLKI.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-S4MEI.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-5PVJ8.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-2KH7U.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-5HG49.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 3136 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 4496 KitFiles136.exe 4496 KitFiles136.exe 4496 KitFiles136.exe 4496 KitFiles136.exe 4496 KitFiles136.exe 4496 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 3136 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 2352 wrote to memory of 1960 2352 file.exe file.tmp PID 2352 wrote to memory of 1960 2352 file.exe file.tmp PID 2352 wrote to memory of 1960 2352 file.exe file.tmp PID 1960 wrote to memory of 4496 1960 file.tmp KitFiles136.exe PID 1960 wrote to memory of 4496 1960 file.tmp KitFiles136.exe PID 1960 wrote to memory of 4496 1960 file.tmp KitFiles136.exe PID 4496 wrote to memory of 1364 4496 KitFiles136.exe DSztAsgM.exe PID 4496 wrote to memory of 1364 4496 KitFiles136.exe DSztAsgM.exe PID 4496 wrote to memory of 1364 4496 KitFiles136.exe DSztAsgM.exe PID 4496 wrote to memory of 4548 4496 KitFiles136.exe cmd.exe PID 4496 wrote to memory of 4548 4496 KitFiles136.exe cmd.exe PID 4496 wrote to memory of 4548 4496 KitFiles136.exe cmd.exe PID 4548 wrote to memory of 3136 4548 cmd.exe taskkill.exe PID 4548 wrote to memory of 3136 4548 cmd.exe taskkill.exe PID 4548 wrote to memory of 3136 4548 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:2352 -
C:\Users\Admin\AppData\Local\Temp\is-VV7GN.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-VV7GN.tmp\file.tmp" /SL5="$90054,855316,51712,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:1960 -
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:4496 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\DSztAsgM.exe4⤵
- Executes dropped EXE
PID:1364 -
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:4548 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3136
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5dfec8a87f073009872365bb0fdd10460
SHA1d550029b41c257715833ff610161887f444b8967
SHA256b8749be6d4a0415664d7e27c7a2fd4a97836bb6eb5236fdd6346eff943768ccd
SHA512b9038e11c15456b15f21529284c24413f03af261e8e32e01f3de02e01d4fbd443e72ddf4bf12a87647efa12e6dcd8e770def44ba841c33babfbd2ee89cef8617
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Filesize
1.6MB
MD5dfec8a87f073009872365bb0fdd10460
SHA1d550029b41c257715833ff610161887f444b8967
SHA256b8749be6d4a0415664d7e27c7a2fd4a97836bb6eb5236fdd6346eff943768ccd
SHA512b9038e11c15456b15f21529284c24413f03af261e8e32e01f3de02e01d4fbd443e72ddf4bf12a87647efa12e6dcd8e770def44ba841c33babfbd2ee89cef8617
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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