Analysis
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max time kernel
155s -
max time network
184s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
03/12/2022, 22:16
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
3.4MB
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MD5
89cbbbb5fd72c47fcb3a09147ed51eb2
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SHA1
5c2dbae6c631b904fb89d993719a71df9f5d97df
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SHA256
28f644c622dc19e5cb80b319adabbf437421f8de4076bff4a6e781b2e26bfaa7
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SHA512
d566ae4f73e285b4562cefffc0205f33e9b999e4fadf0f9f287e95181a001667c76d039b31602d5a7f653ef9c8f71baed1ffc6d508843705bf6cd228c8daa3ef
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SSDEEP
98304:scsaXH1TkzFV83AthOLLzijOji+SnJrMxbA6FXcyU:7XEf8JzcOjMoA6FXcyU
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 2352 is-RE554.tmp 2084 PrintFolders.exe 1360 7fJGQWcsYUc.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 PrintFolders.exe -
Loads dropped DLL 1 IoCs
pid Process 2352 is-RE554.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-RE554.tmp File created C:\Program Files (x86)\PrintFolders\is-T99UM.tmp is-RE554.tmp File created C:\Program Files (x86)\PrintFolders\is-TPL7C.tmp is-RE554.tmp File created C:\Program Files (x86)\PrintFolders\is-05VJ0.tmp is-RE554.tmp File created C:\Program Files (x86)\PrintFolders\is-AGKU8.tmp is-RE554.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-RE554.tmp File created C:\Program Files (x86)\PrintFolders\is-1GLEG.tmp is-RE554.tmp File created C:\Program Files (x86)\PrintFolders\is-VJLC7.tmp is-RE554.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-RE554.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 4112 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2084 PrintFolders.exe 2084 PrintFolders.exe 2084 PrintFolders.exe 2084 PrintFolders.exe 2084 PrintFolders.exe 2084 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2084 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4112 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 3356 wrote to memory of 2352 3356 file.exe 79 PID 3356 wrote to memory of 2352 3356 file.exe 79 PID 3356 wrote to memory of 2352 3356 file.exe 79 PID 2352 wrote to memory of 2084 2352 is-RE554.tmp 81 PID 2352 wrote to memory of 2084 2352 is-RE554.tmp 81 PID 2352 wrote to memory of 2084 2352 is-RE554.tmp 81 PID 2084 wrote to memory of 1360 2084 PrintFolders.exe 82 PID 2084 wrote to memory of 1360 2084 PrintFolders.exe 82 PID 2084 wrote to memory of 1360 2084 PrintFolders.exe 82 PID 2084 wrote to memory of 4144 2084 PrintFolders.exe 83 PID 2084 wrote to memory of 4144 2084 PrintFolders.exe 83 PID 2084 wrote to memory of 4144 2084 PrintFolders.exe 83 PID 4144 wrote to memory of 4112 4144 cmd.exe 85 PID 4144 wrote to memory of 4112 4144 cmd.exe 85 PID 4144 wrote to memory of 4112 4144 cmd.exe 85
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:3356 -
C:\Users\Admin\AppData\Local\Temp\is-LD73O.tmp\is-RE554.tmp"C:\Users\Admin\AppData\Local\Temp\is-LD73O.tmp\is-RE554.tmp" /SL4 $40074 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3331068 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2352 -
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 behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2084 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\7fJGQWcsYUc.exe4⤵
- Executes dropped EXE
PID:1360
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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:4144 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4112
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5.7MB
MD5fc4a1c43b91d2ec6789d1b31164a404c
SHA1ebdcb193410daf0f950a6b40b6d8ebf65043c25b
SHA256b450185373af9e252c81000ae1b6663a5ba669939417a38cdd1eb9d2dd0363d0
SHA51291daa68c62d764d023de51b8fae10d7806b922be8cd7e6437497c33b747ed9ee1415d8186a97222aae4e0135f175dd85afeb81efc66d6349255b71cde0bd6e78
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Filesize
5.7MB
MD5fc4a1c43b91d2ec6789d1b31164a404c
SHA1ebdcb193410daf0f950a6b40b6d8ebf65043c25b
SHA256b450185373af9e252c81000ae1b6663a5ba669939417a38cdd1eb9d2dd0363d0
SHA51291daa68c62d764d023de51b8fae10d7806b922be8cd7e6437497c33b747ed9ee1415d8186a97222aae4e0135f175dd85afeb81efc66d6349255b71cde0bd6e78
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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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
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c