Analysis
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max time kernel
76s -
max time network
144s -
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, 18:20
Static task
static1
Behavioral task
behavioral1
Sample
b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe
Resource
win10-20220901-en
Behavioral task
behavioral2
Sample
b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe
Resource
win7-20221111-en
General
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Target
b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe
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Size
2.2MB
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MD5
6bbc0008d0440bca202bfe1c4493984d
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SHA1
41592d8daa949d0beb2f0191fce447fcd693fcad
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SHA256
b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1
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SHA512
ce3dfc9949b53ee79709049f894d66fe9593aeccb7ebb22cebad9344a383b8d570d5c43106e5ee55897645023f8503f62aacc002cf2486d63f750250ae2da037
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SSDEEP
49152:q2Chz8BY/ZfCqAtexIpJivEyVL/zVUJS6PZkkSKUxVkBaFwnm:rCeNte4J4ZbzVbaDUxVkB04m
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3976 is-T4H6N.tmp 1140 gusearcher85.exe 3960 H1veXV.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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation gusearcher85.exe -
Loads dropped DLL 1 IoCs
pid Process 3976 is-T4H6N.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-G6Q89.tmp is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-K2R8D.tmp is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-OMQ8N.tmp is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-1SG1I.tmp is-T4H6N.tmp File opened for modification C:\Program Files (x86)\guSearcher\unins000.dat is-T4H6N.tmp File opened for modification C:\Program Files (x86)\guSearcher\gusearcher85.exe is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\unins000.dat is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-DD3G3.tmp is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-P0GGM.tmp is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-F5PST.tmp is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-RH4D9.tmp is-T4H6N.tmp File created C:\Program Files (x86)\guSearcher\is-HFEQQ.tmp is-T4H6N.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 4532 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1140 gusearcher85.exe 1140 gusearcher85.exe 1140 gusearcher85.exe 1140 gusearcher85.exe 1140 gusearcher85.exe 1140 gusearcher85.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4532 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4144 wrote to memory of 3976 4144 b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe 83 PID 4144 wrote to memory of 3976 4144 b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe 83 PID 4144 wrote to memory of 3976 4144 b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe 83 PID 3976 wrote to memory of 1140 3976 is-T4H6N.tmp 84 PID 3976 wrote to memory of 1140 3976 is-T4H6N.tmp 84 PID 3976 wrote to memory of 1140 3976 is-T4H6N.tmp 84 PID 1140 wrote to memory of 3960 1140 gusearcher85.exe 87 PID 1140 wrote to memory of 3960 1140 gusearcher85.exe 87 PID 1140 wrote to memory of 3960 1140 gusearcher85.exe 87 PID 1140 wrote to memory of 4484 1140 gusearcher85.exe 98 PID 1140 wrote to memory of 4484 1140 gusearcher85.exe 98 PID 1140 wrote to memory of 4484 1140 gusearcher85.exe 98 PID 4484 wrote to memory of 4532 4484 cmd.exe 100 PID 4484 wrote to memory of 4532 4484 cmd.exe 100 PID 4484 wrote to memory of 4532 4484 cmd.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe"C:\Users\Admin\AppData\Local\Temp\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4144 -
C:\Users\Admin\AppData\Local\Temp\is-MK6SJ.tmp\is-T4H6N.tmp"C:\Users\Admin\AppData\Local\Temp\is-MK6SJ.tmp\is-T4H6N.tmp" /SL4 $B0068 "C:\Users\Admin\AppData\Local\Temp\b16aad5012ae2abc97a24d99bf721a8331b24eb9faec56639d69964f34ba3bc1.exe" 2070822 3184642⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3976 -
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:1140 -
C:\Users\Admin\AppData\Roaming\{6eb576c0-6208-11ed-9190-806e6f6e6963}\H1veXV.exe4⤵
- Executes dropped EXE
PID:3960
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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:4484 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "gusearcher85.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4532
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3.0MB
MD50b4163b6681f0c12e45565eb3d303e42
SHA1a74e881abdb3baa13272c08aff447e807c362cd0
SHA256da4564fbfc705f4cace8a04cb5e6698a233572343bebf1a5fe79f52689adacad
SHA512c4e959e1818c4079f0540d64869d5f53a89156a6cdcfe1d9a219a064b04e5d4dd4ec37764135f2b740751fbb3a106ff2d7b5dc5f8cd3da72db81d3edca2232c9
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Filesize
3.0MB
MD50b4163b6681f0c12e45565eb3d303e42
SHA1a74e881abdb3baa13272c08aff447e807c362cd0
SHA256da4564fbfc705f4cace8a04cb5e6698a233572343bebf1a5fe79f52689adacad
SHA512c4e959e1818c4079f0540d64869d5f53a89156a6cdcfe1d9a219a064b04e5d4dd4ec37764135f2b740751fbb3a106ff2d7b5dc5f8cd3da72db81d3edca2232c9
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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