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Analysis
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max time kernel
98s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
06/01/2023, 21:32
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
1.8MB
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MD5
d9be361b1f8bb4936005a74914fbe6f5
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SHA1
f537cd6a48c521499193c8278e1f84fc3f8ac9f7
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SHA256
e028ab3888d547deb1fc53fabd694a15d735f28bf68ac36b23d67ae9d2bb25d6
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SHA512
124ea8ab60b5d34de7694ff67483f78f3161fa9efd62cda6a07832c84a39498567a23884a65f4f321ac29d0f28957db55b1c50c300ee44c67de2009cede21de6
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SSDEEP
49152:Aixz0zjpivo4sD1FcflzKv1sBUpwci8Ptk4VRAlNpi:AixSiQFDbccdsBeVtao
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 2124 is-T8QOI.tmp 4568 PlitFiles132.exe 5092 YPYVpixJTqc6j.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation PlitFiles132.exe -
Loads dropped DLL 1 IoCs
pid Process 2124 is-T8QOI.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
description ioc Process File created C:\Program Files (x86)\Split Files\is-JBG5A.tmp is-T8QOI.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\is-O4QNQ.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-FIPNG.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-U471O.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-1U6OA.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-LMJM2.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-DCJ1F.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-SPHET.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\is-TIVI7.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\is-4V3A1.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\is-H2LH8.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-230AD.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-VEF4V.tmp is-T8QOI.tmp File created C:\Program Files (x86)\Split Files\language\is-0TM8N.tmp is-T8QOI.tmp File opened for modification C:\Program Files (x86)\Split Files\PlitFiles132.exe is-T8QOI.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
pid Process 872 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4568 PlitFiles132.exe 4568 PlitFiles132.exe 4568 PlitFiles132.exe 4568 PlitFiles132.exe 4568 PlitFiles132.exe 4568 PlitFiles132.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 872 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4820 wrote to memory of 2124 4820 file.exe 81 PID 4820 wrote to memory of 2124 4820 file.exe 81 PID 4820 wrote to memory of 2124 4820 file.exe 81 PID 2124 wrote to memory of 4568 2124 is-T8QOI.tmp 82 PID 2124 wrote to memory of 4568 2124 is-T8QOI.tmp 82 PID 2124 wrote to memory of 4568 2124 is-T8QOI.tmp 82 PID 4568 wrote to memory of 5092 4568 PlitFiles132.exe 83 PID 4568 wrote to memory of 5092 4568 PlitFiles132.exe 83 PID 4568 wrote to memory of 5092 4568 PlitFiles132.exe 83 PID 4568 wrote to memory of 440 4568 PlitFiles132.exe 91 PID 4568 wrote to memory of 440 4568 PlitFiles132.exe 91 PID 4568 wrote to memory of 440 4568 PlitFiles132.exe 91 PID 440 wrote to memory of 872 440 cmd.exe 93 PID 440 wrote to memory of 872 440 cmd.exe 93 PID 440 wrote to memory of 872 440 cmd.exe 93
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:4820 -
C:\Users\Admin\AppData\Local\Temp\is-KHF8V.tmp\is-T8QOI.tmp"C:\Users\Admin\AppData\Local\Temp\is-KHF8V.tmp\is-T8QOI.tmp" /SL4 $701F8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1609505 967682⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2124 -
C:\Program Files (x86)\Split Files\PlitFiles132.exe"C:\Program Files (x86)\Split Files\PlitFiles132.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4568 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\YPYVpixJTqc6j.exe
- Executes dropped EXE
PID:5092
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "PlitFiles132.exe" /f & erase "C:\Program Files (x86)\Split Files\PlitFiles132.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:440 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PlitFiles132.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:872
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD533cfcce0a158901607d20a5a3e8b8f03
SHA11d24ceb8c75c1818a484c60b39e26293c9bf2ff4
SHA25653aaa6ae501fdeea6a00f9a5a15a7f36e9b6b0158cde2c703c11240a4e02b52a
SHA512c33fce3b85fc55db17ce37e1004348a99400fb5811605598f7f25a6fd07c0fdc2905c9c90c5e38c762adeadb0f71dd8ade5b91c5340649b0ec6ee7ff7c543100
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Filesize
3.1MB
MD533cfcce0a158901607d20a5a3e8b8f03
SHA11d24ceb8c75c1818a484c60b39e26293c9bf2ff4
SHA25653aaa6ae501fdeea6a00f9a5a15a7f36e9b6b0158cde2c703c11240a4e02b52a
SHA512c33fce3b85fc55db17ce37e1004348a99400fb5811605598f7f25a6fd07c0fdc2905c9c90c5e38c762adeadb0f71dd8ade5b91c5340649b0ec6ee7ff7c543100
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Filesize
688KB
MD5825e351a0f8f4c0765f2362966ac3122
SHA1b7776ed8bd5cb15d6f6a12805de3394012b3f8c1
SHA256d55e786215fe7ec096087dbf7a3558397768ad50f0182f474d2a3ce6ed772405
SHA512775613f17bdfa13bfb99660f517d7b1fdd31acc268304a184fc86cc339c987e2d020c313a685c22fb406422137ffc4c999b7988951ade37c2990b898b0fb9f43
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Filesize
688KB
MD5825e351a0f8f4c0765f2362966ac3122
SHA1b7776ed8bd5cb15d6f6a12805de3394012b3f8c1
SHA256d55e786215fe7ec096087dbf7a3558397768ad50f0182f474d2a3ce6ed772405
SHA512775613f17bdfa13bfb99660f517d7b1fdd31acc268304a184fc86cc339c987e2d020c313a685c22fb406422137ffc4c999b7988951ade37c2990b898b0fb9f43
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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