Analysis
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max time kernel
144s -
max time network
147s -
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, 20:04
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
2.4MB
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MD5
16c118a776884aa39017377479bff653
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SHA1
6a10ae2c3381d28c19441136bbe53f7236577c04
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SHA256
c341c01907a7d5ab9730a516e66189bfb194017fd727ed9f3e5301894907d476
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SHA512
6bbe610aa1a785673daabe6fc41181ebf17530d27186760180259842b39034c7999f8ccde80d3a04ebf94ee4161feb6694fb6f8bab91b9d06fe118dc122b1c4d
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SSDEEP
49152:q2P4+/YFrUauYKW9uplz7rSqMC2mmCLVaROh4E2ss3Bg2BnMUxVkBaFwnm:rP4+/Y7rKegjMCH7LVaEr2tBFBMUxVkq
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 2444 is-298JI.tmp 3436 gusearcher85.exe 3840 TYTwi22IOYVlQ.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 2444 is-298JI.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-TAVD1.tmp is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-0GQ73.tmp is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-G50A5.tmp is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-5CFSM.tmp is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-N28BP.tmp is-298JI.tmp File opened for modification C:\Program Files (x86)\guSearcher\unins000.dat is-298JI.tmp File created C:\Program Files (x86)\guSearcher\unins000.dat is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-RE0K3.tmp is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-SCPBN.tmp is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-R9R9K.tmp is-298JI.tmp File created C:\Program Files (x86)\guSearcher\is-LCFRK.tmp is-298JI.tmp File opened for modification C:\Program Files (x86)\guSearcher\gusearcher85.exe is-298JI.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 4148 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3436 gusearcher85.exe 3436 gusearcher85.exe 3436 gusearcher85.exe 3436 gusearcher85.exe 3436 gusearcher85.exe 3436 gusearcher85.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4148 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 1492 wrote to memory of 2444 1492 file.exe 84 PID 1492 wrote to memory of 2444 1492 file.exe 84 PID 1492 wrote to memory of 2444 1492 file.exe 84 PID 2444 wrote to memory of 3436 2444 is-298JI.tmp 85 PID 2444 wrote to memory of 3436 2444 is-298JI.tmp 85 PID 2444 wrote to memory of 3436 2444 is-298JI.tmp 85 PID 3436 wrote to memory of 3840 3436 gusearcher85.exe 89 PID 3436 wrote to memory of 3840 3436 gusearcher85.exe 89 PID 3436 wrote to memory of 3840 3436 gusearcher85.exe 89 PID 3436 wrote to memory of 1560 3436 gusearcher85.exe 95 PID 3436 wrote to memory of 1560 3436 gusearcher85.exe 95 PID 3436 wrote to memory of 1560 3436 gusearcher85.exe 95 PID 1560 wrote to memory of 4148 1560 cmd.exe 97 PID 1560 wrote to memory of 4148 1560 cmd.exe 97 PID 1560 wrote to memory of 4148 1560 cmd.exe 97
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:1492 -
C:\Users\Admin\AppData\Local\Temp\is-A0GQ9.tmp\is-298JI.tmp"C:\Users\Admin\AppData\Local\Temp\is-A0GQ9.tmp\is-298JI.tmp" /SL4 $C01CA "C:\Users\Admin\AppData\Local\Temp\file.exe" 2238694 3184642⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2444 -
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:3436 -
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\TYTwi22IOYVlQ.exe4⤵
- Executes dropped EXE
PID:3840
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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:1560 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "gusearcher85.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4148
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.2MB
MD585287db451234c24888f04928526dc8a
SHA1e143bb226a26d579c1b3c04c0fcc3d562dd061aa
SHA2567ce1000a5d528f10e4c9c1f6ed64a655ed3c905793826a60cf6087d41dda5ada
SHA5121694e8ead5da08ec260d36ba72e67c28439ac5b49fbf6222f99a07f1a78c3d6e8675d63aea27b1f1ddb61d558500667fb4c170fd583eabfc6ddb4b10df8379b6
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Filesize
3.2MB
MD585287db451234c24888f04928526dc8a
SHA1e143bb226a26d579c1b3c04c0fcc3d562dd061aa
SHA2567ce1000a5d528f10e4c9c1f6ed64a655ed3c905793826a60cf6087d41dda5ada
SHA5121694e8ead5da08ec260d36ba72e67c28439ac5b49fbf6222f99a07f1a78c3d6e8675d63aea27b1f1ddb61d558500667fb4c170fd583eabfc6ddb4b10df8379b6
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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