Analysis
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max time kernel
150s -
max time network
142s -
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, 21:04
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
2.2MB
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MD5
be4eabdf1eec80bc91bee98d0fa2168f
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SHA1
5a3518040fc8c7ee0e6ad577526fc3866e52cb41
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SHA256
4859c1553b67383a98d3a30eb689a1cd0b232fdca12cbe66313f4f191d4158cd
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SHA512
06c7877fedf349048eeaa350b9020c68079fb63a092af4fc2ce3aadea2b99f9aeb8d564ed60bf7eb6a1001cb60e62b52ae0d687a12faadf20c1a9d4b645489a2
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SSDEEP
49152:q2DHKE1UrN936qr96KLfwJFfa/gUxVkBaFwnm:r6r+sfwnfaIUxVkB04m
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 2256 is-HNB6L.tmp 1484 gusearcher85.exe 2524 PoTUEYSAkQ.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-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation gusearcher85.exe -
Loads dropped DLL 1 IoCs
pid Process 2256 is-HNB6L.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-CDKBN.tmp is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-L4O2Q.tmp is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-TORMT.tmp is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-EV9OP.tmp is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-NPP3C.tmp is-HNB6L.tmp File opened for modification C:\Program Files (x86)\guSearcher\unins000.dat is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\unins000.dat is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-LDR9H.tmp is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-JGIMH.tmp is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-U7L3D.tmp is-HNB6L.tmp File created C:\Program Files (x86)\guSearcher\is-0AQUJ.tmp is-HNB6L.tmp File opened for modification C:\Program Files (x86)\guSearcher\gusearcher85.exe is-HNB6L.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 1484 gusearcher85.exe 1484 gusearcher85.exe 1484 gusearcher85.exe 1484 gusearcher85.exe 1484 gusearcher85.exe 1484 gusearcher85.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 3712 wrote to memory of 2256 3712 file.exe 84 PID 3712 wrote to memory of 2256 3712 file.exe 84 PID 3712 wrote to memory of 2256 3712 file.exe 84 PID 2256 wrote to memory of 1484 2256 is-HNB6L.tmp 85 PID 2256 wrote to memory of 1484 2256 is-HNB6L.tmp 85 PID 2256 wrote to memory of 1484 2256 is-HNB6L.tmp 85 PID 1484 wrote to memory of 2524 1484 gusearcher85.exe 88 PID 1484 wrote to memory of 2524 1484 gusearcher85.exe 88 PID 1484 wrote to memory of 2524 1484 gusearcher85.exe 88 PID 1484 wrote to memory of 4408 1484 gusearcher85.exe 94 PID 1484 wrote to memory of 4408 1484 gusearcher85.exe 94 PID 1484 wrote to memory of 4408 1484 gusearcher85.exe 94 PID 4408 wrote to memory of 1444 4408 cmd.exe 96 PID 4408 wrote to memory of 1444 4408 cmd.exe 96 PID 4408 wrote to memory of 1444 4408 cmd.exe 96
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:3712 -
C:\Users\Admin\AppData\Local\Temp\is-DT7SP.tmp\is-HNB6L.tmp"C:\Users\Admin\AppData\Local\Temp\is-DT7SP.tmp\is-HNB6L.tmp" /SL4 $90054 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2069337 3184642⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2256 -
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:1484 -
C:\Users\Admin\AppData\Roaming\{6fe6a3c0-6208-11ed-b8c9-806e6f6e6963}\PoTUEYSAkQ.exe4⤵
- Executes dropped EXE
PID:2524
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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:4408 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "gusearcher85.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
3.0MB
MD54b288fa06a2ae5b5cafd670455c5f465
SHA159d7a5f80482fdce41e64edbe87c04c698d91533
SHA2563df88020a24b736b5b3e0aeb24d7938451a3dd42f275ab07d2b48283fb538d63
SHA51262591c0bf8bb0296e2adac48c1e59fa5b59b6a3c1b67cb23431e9225703cbff689ebd81e70f9b7f6331c93ab8dd83b2c2b2b85d4b2fa8637ac9ff3e53f25f786
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Filesize
3.0MB
MD54b288fa06a2ae5b5cafd670455c5f465
SHA159d7a5f80482fdce41e64edbe87c04c698d91533
SHA2563df88020a24b736b5b3e0aeb24d7938451a3dd42f275ab07d2b48283fb538d63
SHA51262591c0bf8bb0296e2adac48c1e59fa5b59b6a3c1b67cb23431e9225703cbff689ebd81e70f9b7f6331c93ab8dd83b2c2b2b85d4b2fa8637ac9ff3e53f25f786
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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