Analysis
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max time kernel
145s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
30/11/2022, 19:01
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
2.0MB
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MD5
e63dbb34fa1a27d16da50e32f197b815
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SHA1
caf320da59ba5317a7cc3a2bff1b1bf3d2ef5522
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SHA256
9250c83d88932c3ac2c2b24dd9c1d1bef596c82c08da9b9d1800f3949a794938
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SHA512
4832e69ac20d469a5707835e59e2dcf5ed8e55912e06297b20bdc96a35214644cb55c3b4780ab8ca77e4f4d2afdc0f14a877e1dc40c1352bcf70f4b933948d48
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SSDEEP
49152:w//lxYBiyu9CIEGv7FH/TfU6KbdTKRyHFL9SKmsutZpAG5cyB:wlhIU7NTKtUKmhzXcyB
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3852 is-JM7FL.tmp 3524 PrintFolders.exe 480 kF1Jhij.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 3852 is-JM7FL.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-ECGKN.tmp is-JM7FL.tmp File created C:\Program Files (x86)\PrintFolders\is-JAH7M.tmp is-JM7FL.tmp File created C:\Program Files (x86)\PrintFolders\is-OACNC.tmp is-JM7FL.tmp File created C:\Program Files (x86)\PrintFolders\is-8HKI3.tmp is-JM7FL.tmp File opened for modification C:\Program Files (x86)\PrintFolders\unins000.dat is-JM7FL.tmp File created C:\Program Files (x86)\PrintFolders\unins000.dat is-JM7FL.tmp File created C:\Program Files (x86)\PrintFolders\is-1J01P.tmp is-JM7FL.tmp File created C:\Program Files (x86)\PrintFolders\is-K7CKD.tmp is-JM7FL.tmp File opened for modification C:\Program Files (x86)\PrintFolders\PrintFolders.exe is-JM7FL.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 2748 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3524 PrintFolders.exe 3524 PrintFolders.exe 3524 PrintFolders.exe 3524 PrintFolders.exe 3524 PrintFolders.exe 3524 PrintFolders.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3524 PrintFolders.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2748 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 4760 wrote to memory of 3852 4760 file.exe 80 PID 4760 wrote to memory of 3852 4760 file.exe 80 PID 4760 wrote to memory of 3852 4760 file.exe 80 PID 3852 wrote to memory of 3524 3852 is-JM7FL.tmp 81 PID 3852 wrote to memory of 3524 3852 is-JM7FL.tmp 81 PID 3852 wrote to memory of 3524 3852 is-JM7FL.tmp 81 PID 3524 wrote to memory of 480 3524 PrintFolders.exe 82 PID 3524 wrote to memory of 480 3524 PrintFolders.exe 82 PID 3524 wrote to memory of 480 3524 PrintFolders.exe 82 PID 3524 wrote to memory of 1340 3524 PrintFolders.exe 85 PID 3524 wrote to memory of 1340 3524 PrintFolders.exe 85 PID 3524 wrote to memory of 1340 3524 PrintFolders.exe 85 PID 1340 wrote to memory of 2748 1340 cmd.exe 87 PID 1340 wrote to memory of 2748 1340 cmd.exe 87 PID 1340 wrote to memory of 2748 1340 cmd.exe 87
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:4760 -
C:\Users\Admin\AppData\Local\Temp\is-JMJAU.tmp\is-JM7FL.tmp"C:\Users\Admin\AppData\Local\Temp\is-JMJAU.tmp\is-JM7FL.tmp" /SL4 $F01DC "C:\Users\Admin\AppData\Local\Temp\file.exe" 1905875 517122⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3852 -
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:3524 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\kF1Jhij.exe4⤵
- Executes dropped EXE
PID:480
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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:1340 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "PrintFolders.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2748
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.1MB
MD586b2b234c0879a65f04a20b9905c8744
SHA1ec28b6f834158aaa8a477a6b50ca973c6990e595
SHA256f6cabac33d9db35d1ac0445bf1906629332b0f18b67590aae68a04a2308efe6d
SHA512f903e5bf8e87a4b0735a309513fb7f0e8e82abb833dd61dc04ae35cbbc4f3c14bb3b2a0ac6b6cafe7ba6f708c448d0fa8757e9131007e5917596a2a16626696b
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Filesize
3.1MB
MD586b2b234c0879a65f04a20b9905c8744
SHA1ec28b6f834158aaa8a477a6b50ca973c6990e595
SHA256f6cabac33d9db35d1ac0445bf1906629332b0f18b67590aae68a04a2308efe6d
SHA512f903e5bf8e87a4b0735a309513fb7f0e8e82abb833dd61dc04ae35cbbc4f3c14bb3b2a0ac6b6cafe7ba6f708c448d0fa8757e9131007e5917596a2a16626696b
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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