Analysis
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max time kernel
90s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
04/12/2022, 01:02
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
General
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Target
file.exe
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Size
3.4MB
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MD5
304aea8386d0da915e7448efb4ac7d6c
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SHA1
8a768cce5eba814a85df00670d9283effa75da0d
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SHA256
f6483d7b512d9c1f5715a727ff3afc0d30e4b2fdf654c52efc8286824a31f328
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SHA512
8ffc2555dc3dbaa160f4f8aaa9c7bd0fc13d7ebaa250edf24655bc48dfcb76e10631adecba8875c2ae864832258d4ac2651addf56a32440ecc1650193b8a0b99
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SSDEEP
98304:4h4Jl8i5IdoneoCScV4+g90nlZKVaXcy8:qUl8pdoeRSc492ywXcy8
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4636 is-7H2TC.tmp 1292 PrintFolders.exe 1392 zEHFvVPqxHPA8.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 4636 is-7H2TC.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\is-RJNN8.tmp is-7H2TC.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-7H2TC.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-7H2TC.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-7H2TC.tmp File created C:\Program Files (x86)\PrintFolders\is-3BL9H.tmp is-7H2TC.tmp File created C:\Program Files (x86)\PrintFolders\is-7O2NI.tmp is-7H2TC.tmp File created C:\Program Files (x86)\PrintFolders\is-GF2O1.tmp is-7H2TC.tmp File created C:\Program Files (x86)\PrintFolders\is-N90II.tmp is-7H2TC.tmp File created C:\Program Files (x86)\PrintFolders\is-QLB5V.tmp is-7H2TC.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 3704 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1292 PrintFolders.exe 1292 PrintFolders.exe 1292 PrintFolders.exe 1292 PrintFolders.exe 1292 PrintFolders.exe 1292 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3704 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 384 wrote to memory of 4636 384 file.exe 80 PID 384 wrote to memory of 4636 384 file.exe 80 PID 384 wrote to memory of 4636 384 file.exe 80 PID 4636 wrote to memory of 1292 4636 is-7H2TC.tmp 81 PID 4636 wrote to memory of 1292 4636 is-7H2TC.tmp 81 PID 4636 wrote to memory of 1292 4636 is-7H2TC.tmp 81 PID 1292 wrote to memory of 1392 1292 PrintFolders.exe 82 PID 1292 wrote to memory of 1392 1292 PrintFolders.exe 82 PID 1292 wrote to memory of 1392 1292 PrintFolders.exe 82 PID 1292 wrote to memory of 748 1292 PrintFolders.exe 90 PID 1292 wrote to memory of 748 1292 PrintFolders.exe 90 PID 1292 wrote to memory of 748 1292 PrintFolders.exe 90 PID 748 wrote to memory of 3704 748 cmd.exe 92 PID 748 wrote to memory of 3704 748 cmd.exe 92 PID 748 wrote to memory of 3704 748 cmd.exe 92
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:384 -
C:\Users\Admin\AppData\Local\Temp\is-8N3V6.tmp\is-7H2TC.tmp"C:\Users\Admin\AppData\Local\Temp\is-8N3V6.tmp\is-7H2TC.tmp" /SL4 $40056 "C:\Users\Admin\AppData\Local\Temp\file.exe" 3361597 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4636 -
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:1292 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\zEHFvVPqxHPA8.exe4⤵
- Executes dropped EXE
PID:1392
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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:748 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3704
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
5.7MB
MD5c060e832f85902f44816bb87a529eaf1
SHA147b7b4e0fefe472edbe2db3da0357fb422e917be
SHA2560a7e6fd1c9389667ce867ef7a045ca3228f52d16b13964df358c80c308b10f2c
SHA51287418f7324cd6df6623963d7b0b536c7f63892fa277a4a4c4e3d5fbf1bcef0fda792e7033a86f8a2e65726fe521156180d6d2f2ae1aa22ef1fd4dc5164326f9f
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Filesize
5.7MB
MD5c060e832f85902f44816bb87a529eaf1
SHA147b7b4e0fefe472edbe2db3da0357fb422e917be
SHA2560a7e6fd1c9389667ce867ef7a045ca3228f52d16b13964df358c80c308b10f2c
SHA51287418f7324cd6df6623963d7b0b536c7f63892fa277a4a4c4e3d5fbf1bcef0fda792e7033a86f8a2e65726fe521156180d6d2f2ae1aa22ef1fd4dc5164326f9f
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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