Analysis
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max time kernel
91s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
03/12/2022, 22:03
Static task
static1
Behavioral task
behavioral1
Sample
b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe
Resource
win7-20220812-en
General
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Target
b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe
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Size
2.2MB
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MD5
c5fcfd940abec10abe17dd896b8eb0ca
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SHA1
60c15295d99d48fc94125408c40139afcc286ca6
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SHA256
b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb
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SHA512
e05dc8bbbeabeff5cb421b89cf498412be9407de57c944d8b6a1276c319b526c4b1dcc9db4cc9c80fd3ffd7a8e04ac328a59fd4008d6870de5d778b011df0909
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SSDEEP
49152:cquKrjrpWOc3ski6pQNs1eVWhmxdt3WDGHDmZGzSAG5cyG:cquMnKFpQOm4mx/WDGKDXcyG
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 2068 is-KILBR.tmp 4460 PrintFolders.exe 3980 Hxs3Hesqijo.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation PrintFolders.exe -
Loads dropped DLL 1 IoCs
pid Process 2068 is-KILBR.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 9 IoCs
description ioc Process File created C:\Program Files (x86)\PrintFolders\unins000.dat is-KILBR.tmp File created C:\Program Files (x86)\PrintFolders\is-FELB3.tmp is-KILBR.tmp File created C:\Program Files (x86)\PrintFolders\is-MI5M7.tmp is-KILBR.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-KILBR.tmp File created C:\Program Files (x86)\PrintFolders\is-R2KEE.tmp is-KILBR.tmp File created C:\Program Files (x86)\PrintFolders\is-U2R3D.tmp is-KILBR.tmp File created C:\Program Files (x86)\PrintFolders\is-CTS1D.tmp is-KILBR.tmp File created C:\Program Files (x86)\PrintFolders\is-V471L.tmp is-KILBR.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-KILBR.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 1816 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4460 PrintFolders.exe 4460 PrintFolders.exe 4460 PrintFolders.exe 4460 PrintFolders.exe 4460 PrintFolders.exe 4460 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1816 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4708 wrote to memory of 2068 4708 b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe 81 PID 4708 wrote to memory of 2068 4708 b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe 81 PID 4708 wrote to memory of 2068 4708 b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe 81 PID 2068 wrote to memory of 4460 2068 is-KILBR.tmp 82 PID 2068 wrote to memory of 4460 2068 is-KILBR.tmp 82 PID 2068 wrote to memory of 4460 2068 is-KILBR.tmp 82 PID 4460 wrote to memory of 3980 4460 PrintFolders.exe 83 PID 4460 wrote to memory of 3980 4460 PrintFolders.exe 83 PID 4460 wrote to memory of 3980 4460 PrintFolders.exe 83 PID 4460 wrote to memory of 5084 4460 PrintFolders.exe 92 PID 4460 wrote to memory of 5084 4460 PrintFolders.exe 92 PID 4460 wrote to memory of 5084 4460 PrintFolders.exe 92 PID 5084 wrote to memory of 1816 5084 cmd.exe 94 PID 5084 wrote to memory of 1816 5084 cmd.exe 94 PID 5084 wrote to memory of 1816 5084 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe"C:\Users\Admin\AppData\Local\Temp\b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4708 -
C:\Users\Admin\AppData\Local\Temp\is-MCBI3.tmp\is-KILBR.tmp"C:\Users\Admin\AppData\Local\Temp\is-MCBI3.tmp\is-KILBR.tmp" /SL4 $60090 "C:\Users\Admin\AppData\Local\Temp\b98d180d0b6527a802ac339baa2744524ecd4fb0b80d3bda56e8ea2497dd79cb.exe" 2040003 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Program Files (x86)\PrintFolders\PrintFolders.exe"C:\Program Files (x86)\PrintFolders\PrintFolders.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4460 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\Hxs3Hesqijo.exe4⤵
- Executes dropped EXE
PID:3980
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:5084 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1816
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.4MB
MD5f2f109e75711b44a84006b8c415dc2d4
SHA1c3c32154c34ad8049cd5489870aab6db885dfa5a
SHA256db7519d9212654fb0daa34476c332cf2c35124b8d700b3311aed069ed9658b97
SHA512d5266f44850989f91f7349f99fc40821b598b1c943b8b07207c241dda263a62807885b73d3526c197bd963f30750b9c85a3e45e97161a1733680609043d42f76
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Filesize
3.4MB
MD5f2f109e75711b44a84006b8c415dc2d4
SHA1c3c32154c34ad8049cd5489870aab6db885dfa5a
SHA256db7519d9212654fb0daa34476c332cf2c35124b8d700b3311aed069ed9658b97
SHA512d5266f44850989f91f7349f99fc40821b598b1c943b8b07207c241dda263a62807885b73d3526c197bd963f30750b9c85a3e45e97161a1733680609043d42f76
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Filesize
643KB
MD5363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1a4cdb756698ed28f522956166a6292e9e309dd9c
SHA256b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
SHA512b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
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Filesize
643KB
MD5363a4d2aa5d6cf5cbb2267cccf0c4436
SHA1a4cdb756698ed28f522956166a6292e9e309dd9c
SHA256b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021
SHA512b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c