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Analysis
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max time kernel
91s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
07/11/2022, 05:47
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
2.7MB
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MD5
dc0c966d39b5a65d7486be5b965e1ecf
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SHA1
2f1f9fe78c20109b2b489829da9c295df56c0b7c
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SHA256
50a0af15bb8891e45e3836ec3d3bd057745dfc9a483dca3bee8235fde518f8fb
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SHA512
b503d8fb76bbf92b99c0a9b92f135be7cbdb39e38ccc221e48e29bf6afa046dd9629ceb8b3a13598a6bcf64029d6dcf1b696dff86987f91502a8c8a873e8ce7b
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SSDEEP
49152:Z2nz+UHQyIb9WIZ05CnZH0bCt4kAc439rnUUdbHmsM1rDgCZ7PpxRc5A5hq:MLKbd0AnZuCt4kv41nFb+SwRzDq
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3496 is-K7JUQ.tmp 4964 fvsearcher72.exe 3540 c2gszhDqKLZ.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation fvsearcher72.exe -
Loads dropped DLL 1 IoCs
pid Process 3496 is-K7JUQ.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 12 IoCs
description ioc Process File created C:\Program Files (x86)\fvSearcher\is-DKLOL.tmp is-K7JUQ.tmp File opened for modification C:\Program Files (x86)\fvSearcher\unins000.dat is-K7JUQ.tmp File opened for modification C:\Program Files (x86)\fvSearcher\fvsearcher72.exe is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-9AVR7.tmp is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-012GP.tmp is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-FOP7S.tmp is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-UH1JG.tmp is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-0ARRG.tmp is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\unins000.dat is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-TI1TO.tmp is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-RJ56V.tmp is-K7JUQ.tmp File created C:\Program Files (x86)\fvSearcher\is-KB06G.tmp is-K7JUQ.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 1444 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4964 fvsearcher72.exe 4964 fvsearcher72.exe 4964 fvsearcher72.exe 4964 fvsearcher72.exe 4964 fvsearcher72.exe 4964 fvsearcher72.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1444 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4460 wrote to memory of 3496 4460 file.exe 81 PID 4460 wrote to memory of 3496 4460 file.exe 81 PID 4460 wrote to memory of 3496 4460 file.exe 81 PID 3496 wrote to memory of 4964 3496 is-K7JUQ.tmp 82 PID 3496 wrote to memory of 4964 3496 is-K7JUQ.tmp 82 PID 3496 wrote to memory of 4964 3496 is-K7JUQ.tmp 82 PID 4964 wrote to memory of 3540 4964 fvsearcher72.exe 85 PID 4964 wrote to memory of 3540 4964 fvsearcher72.exe 85 PID 4964 wrote to memory of 3540 4964 fvsearcher72.exe 85 PID 4964 wrote to memory of 1424 4964 fvsearcher72.exe 91 PID 4964 wrote to memory of 1424 4964 fvsearcher72.exe 91 PID 4964 wrote to memory of 1424 4964 fvsearcher72.exe 91 PID 1424 wrote to memory of 1444 1424 cmd.exe 93 PID 1424 wrote to memory of 1444 1424 cmd.exe 93 PID 1424 wrote to memory of 1444 1424 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:4460 -
C:\Users\Admin\AppData\Local\Temp\is-D133P.tmp\is-K7JUQ.tmp"C:\Users\Admin\AppData\Local\Temp\is-D133P.tmp\is-K7JUQ.tmp" /SL4 $701CA "C:\Users\Admin\AppData\Local\Temp\file.exe" 2564567 527362⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3496 -
C:\Program Files (x86)\fvSearcher\fvsearcher72.exe"C:\Program Files (x86)\fvSearcher\fvsearcher72.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4964 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\c2gszhDqKLZ.exe
- Executes dropped EXE
PID:3540
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "fvsearcher72.exe" /f & erase "C:\Program Files (x86)\fvSearcher\fvsearcher72.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1424 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "fvsearcher72.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1444
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
4.1MB
MD50b4ea3272ef8f58ec3212e78be10c195
SHA1c00015913a306e8928ba6bcc9cb9e2f4f4b32dd6
SHA256e6fcbfd883b05752d596b5cda43c3a3a156733580c8f9cd1dd389e8b4492b72d
SHA512927b2f7e52ba3705bd78018997a8358c048aa8ee4788d633181eddb1e419e2b95e71f87515fc0e958c0a5a70986557c021cc41c34347cf020d1e30d5c11196aa
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Filesize
4.1MB
MD50b4ea3272ef8f58ec3212e78be10c195
SHA1c00015913a306e8928ba6bcc9cb9e2f4f4b32dd6
SHA256e6fcbfd883b05752d596b5cda43c3a3a156733580c8f9cd1dd389e8b4492b72d
SHA512927b2f7e52ba3705bd78018997a8358c048aa8ee4788d633181eddb1e419e2b95e71f87515fc0e958c0a5a70986557c021cc41c34347cf020d1e30d5c11196aa
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Filesize
657KB
MD57cd12c54a9751ca6eee6ab0c85fb68f5
SHA176562e9b7888b6d20d67addb5a90b68b54a51987
SHA256e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
SHA51227ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
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Filesize
657KB
MD57cd12c54a9751ca6eee6ab0c85fb68f5
SHA176562e9b7888b6d20d67addb5a90b68b54a51987
SHA256e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
SHA51227ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
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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