Analysis
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max time kernel
145s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
20/11/2022, 18:48
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
2.2MB
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MD5
f1b4b5cb154d5f463c0ef1076c405319
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SHA1
493a432a07537b4a4348320a4f75f50aee7727ba
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SHA256
ec96cd51c61b92da5164b561a0452bc4eb55670d5a4899d614e41bdd7413ae60
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SHA512
26a70fb17d176200aa03767f5a55d2498d444c424608e2c9507c14a207d8fd263d36b74159820228e37bed322eaef32e898d5acde7fd28ce752751319f129e61
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SSDEEP
49152:q2RMD1ICUAsklC9pUZFU6MVz/frtaVfggYdtqUv7UxVkBaFwnm:rwLUAscCQXbmBaJgh7bUxVkB04m
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4880 is-LEVFV.tmp 4524 gusearcher85.exe 4052 i99r3xe.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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation gusearcher85.exe -
Loads dropped DLL 1 IoCs
pid Process 4880 is-LEVFV.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)\guSearcher\is-HQ38S.tmp is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\unins000.dat is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-7ND1B.tmp is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-86A1C.tmp is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-G6VJK.tmp is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-G8MEK.tmp is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-R4UFQ.tmp is-LEVFV.tmp File opened for modification C:\Program Files (x86)\guSearcher\unins000.dat is-LEVFV.tmp File opened for modification C:\Program Files (x86)\guSearcher\gusearcher85.exe is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-Q6NIK.tmp is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-0334A.tmp is-LEVFV.tmp File created C:\Program Files (x86)\guSearcher\is-REOH6.tmp is-LEVFV.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 2360 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4524 gusearcher85.exe 4524 gusearcher85.exe 4524 gusearcher85.exe 4524 gusearcher85.exe 4524 gusearcher85.exe 4524 gusearcher85.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2360 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 2288 wrote to memory of 4880 2288 file.exe 83 PID 2288 wrote to memory of 4880 2288 file.exe 83 PID 2288 wrote to memory of 4880 2288 file.exe 83 PID 4880 wrote to memory of 4524 4880 is-LEVFV.tmp 84 PID 4880 wrote to memory of 4524 4880 is-LEVFV.tmp 84 PID 4880 wrote to memory of 4524 4880 is-LEVFV.tmp 84 PID 4524 wrote to memory of 4052 4524 gusearcher85.exe 88 PID 4524 wrote to memory of 4052 4524 gusearcher85.exe 88 PID 4524 wrote to memory of 4052 4524 gusearcher85.exe 88 PID 4524 wrote to memory of 3248 4524 gusearcher85.exe 93 PID 4524 wrote to memory of 3248 4524 gusearcher85.exe 93 PID 4524 wrote to memory of 3248 4524 gusearcher85.exe 93 PID 3248 wrote to memory of 2360 3248 cmd.exe 95 PID 3248 wrote to memory of 2360 3248 cmd.exe 95 PID 3248 wrote to memory of 2360 3248 cmd.exe 95
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:2288 -
C:\Users\Admin\AppData\Local\Temp\is-P48QV.tmp\is-LEVFV.tmp"C:\Users\Admin\AppData\Local\Temp\is-P48QV.tmp\is-LEVFV.tmp" /SL4 $701DA "C:\Users\Admin\AppData\Local\Temp\file.exe" 2072366 3184642⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4880 -
C:\Program Files (x86)\guSearcher\gusearcher85.exe"C:\Program Files (x86)\guSearcher\gusearcher85.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4524 -
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\i99r3xe.exe4⤵
- Executes dropped EXE
PID:4052
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "gusearcher85.exe" /f & erase "C:\Program Files (x86)\guSearcher\gusearcher85.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:3248 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "gusearcher85.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2360
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.0MB
MD5f7b7453aeeda424568ca169cf33adb5c
SHA1fdaff6fbde28e1cd842a1a4d62e929f6320f6eb5
SHA2568b35d1536d0eaefb5ca9a05503b58875860fdb2634c4cddb1247aff58fd1c53e
SHA512fa212edab5bf789466bf87092c0f5cef3868eea6510ead6ed078da708e3a69f6cff2762440997e11ca0efe8e088d71e8b9a95ba08210719c3c9863f1b57ee080
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Filesize
3.0MB
MD5f7b7453aeeda424568ca169cf33adb5c
SHA1fdaff6fbde28e1cd842a1a4d62e929f6320f6eb5
SHA2568b35d1536d0eaefb5ca9a05503b58875860fdb2634c4cddb1247aff58fd1c53e
SHA512fa212edab5bf789466bf87092c0f5cef3868eea6510ead6ed078da708e3a69f6cff2762440997e11ca0efe8e088d71e8b9a95ba08210719c3c9863f1b57ee080
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
917KB
MD5f4d82ac5ccb900eb1ced5e8b69fac0c7
SHA1b43f8fa853706d5732c4d77b7a509977ebe78ea3
SHA256a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff
SHA51226fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c
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Filesize
917KB
MD5f4d82ac5ccb900eb1ced5e8b69fac0c7
SHA1b43f8fa853706d5732c4d77b7a509977ebe78ea3
SHA256a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff
SHA51226fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c