Analysis
-
max time kernel
130s -
max time network
133s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
20/11/2022, 20:32
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
General
-
Target
file.exe
-
Size
2.4MB
-
MD5
7b668440803e4e9e55c2fe7ea57066db
-
SHA1
dfa2b36a314c7ef56700e955720c9c4f0a6a7d8d
-
SHA256
5a042f9d24f109b1a9a2a23fb68378dac92c30bbabb037239408f3f3fa92bed2
-
SHA512
c7bf7c59aeb9534aa0aacac4db62dee6fa8b3a4c350ba781db8a0259120a45aff2b64437a6780347ee3d15c036f2b9a95b183fef733270d55b79e9808a2a71e4
-
SSDEEP
49152:q2CU3arjtTbLhI3nL44MVvlVLdqE62Q2Gi3X+k9jjdzxbKjJhVavutUxVkBaFwnm:rR3cTK3L44+NeGQ6Xv9FxihVaGtUxVkq
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
-
Executes dropped EXE 3 IoCs
pid Process 2456 is-6JT6F.tmp 2808 gusearcher85.exe 3488 eJwYgEs3e.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 gusearcher85.exe -
Loads dropped DLL 1 IoCs
pid Process 2456 is-6JT6F.tmp -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Drops file in Program Files directory 12 IoCs
description ioc Process File created C:\Program Files (x86)\guSearcher\is-A3OL0.tmp is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-1P6TC.tmp is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-A9PPT.tmp is-6JT6F.tmp File opened for modification C:\Program Files (x86)\guSearcher\unins000.dat is-6JT6F.tmp File opened for modification C:\Program Files (x86)\guSearcher\gusearcher85.exe is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\unins000.dat is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-LO2HB.tmp is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-EJ5GJ.tmp is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-KGPDV.tmp is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-U2H1J.tmp is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-A96DR.tmp is-6JT6F.tmp File created C:\Program Files (x86)\guSearcher\is-BV4S6.tmp is-6JT6F.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Kills process with taskkill 1 IoCs
pid Process 1884 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2808 gusearcher85.exe 2808 gusearcher85.exe 2808 gusearcher85.exe 2808 gusearcher85.exe 2808 gusearcher85.exe 2808 gusearcher85.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1884 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4528 wrote to memory of 2456 4528 file.exe 76 PID 4528 wrote to memory of 2456 4528 file.exe 76 PID 4528 wrote to memory of 2456 4528 file.exe 76 PID 2456 wrote to memory of 2808 2456 is-6JT6F.tmp 77 PID 2456 wrote to memory of 2808 2456 is-6JT6F.tmp 77 PID 2456 wrote to memory of 2808 2456 is-6JT6F.tmp 77 PID 2808 wrote to memory of 3488 2808 gusearcher85.exe 78 PID 2808 wrote to memory of 3488 2808 gusearcher85.exe 78 PID 2808 wrote to memory of 3488 2808 gusearcher85.exe 78 PID 2808 wrote to memory of 1064 2808 gusearcher85.exe 84 PID 2808 wrote to memory of 1064 2808 gusearcher85.exe 84 PID 2808 wrote to memory of 1064 2808 gusearcher85.exe 84 PID 1064 wrote to memory of 1884 1064 cmd.exe 86 PID 1064 wrote to memory of 1884 1064 cmd.exe 86 PID 1064 wrote to memory of 1884 1064 cmd.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4528 -
C:\Users\Admin\AppData\Local\Temp\is-D3QQI.tmp\is-6JT6F.tmp"C:\Users\Admin\AppData\Local\Temp\is-D3QQI.tmp\is-6JT6F.tmp" /SL4 $80032 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2240260 3184642⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2456 -
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:2808 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\eJwYgEs3e.exe4⤵
- Executes dropped EXE
PID:3488
-
-
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:1064 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "gusearcher85.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1884
-
-
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
3.2MB
MD55df6b382dfaba0f2bce400d5ce648e65
SHA168a345a0b16251d9f1548bf1b491f3287fe51db0
SHA2569b0e2f759366e650d66c5a293eda8bb4f37b4d17129a6c564ec9b04843abcaa4
SHA5125c30e9f1ad3ddd0bea5afcb3282d6dba5c747a3a727e841660b2e2ea20c8511635c84082d0f1ed75544f40dcc23d4109bffdb1fb696419a9545ad003b13f1fa7
-
Filesize
3.2MB
MD55df6b382dfaba0f2bce400d5ce648e65
SHA168a345a0b16251d9f1548bf1b491f3287fe51db0
SHA2569b0e2f759366e650d66c5a293eda8bb4f37b4d17129a6c564ec9b04843abcaa4
SHA5125c30e9f1ad3ddd0bea5afcb3282d6dba5c747a3a727e841660b2e2ea20c8511635c84082d0f1ed75544f40dcc23d4109bffdb1fb696419a9545ad003b13f1fa7
-
Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
-
Filesize
917KB
MD5f4d82ac5ccb900eb1ced5e8b69fac0c7
SHA1b43f8fa853706d5732c4d77b7a509977ebe78ea3
SHA256a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff
SHA51226fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c
-
Filesize
917KB
MD5f4d82ac5ccb900eb1ced5e8b69fac0c7
SHA1b43f8fa853706d5732c4d77b7a509977ebe78ea3
SHA256a9881bd0cfd544279a707471babeed014cd134268f2e793cecb604d1f9a987ff
SHA51226fa609a47f7d57cc4b00bd861e7ad5441e4f891a76a50f3c8fed8a3ac51868641c1600fe50438c558f5fdd1ae790b1bbb286475e281a7fd46c5b892e110711c
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
-
Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c