Analysis
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max time kernel
123s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
23/12/2022, 08:01
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
1.9MB
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MD5
bbb1e6ad1663a732e4b73326166e5e78
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SHA1
5e0930b3b97053d3783203e65cb1cd6e3e0ac9fb
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SHA256
ac0ef41c73a163519542052f911faf9f25f1f5efb726bc0aeb2fa0db237aeb62
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SHA512
68a8a0bf40d2471345791a227056386dfc2795583c0645842e6014bea4fbc7434ed916681ac031c7e3c084a6f073ac677950bf33e911fdd5a4b7828238f88564
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SSDEEP
49152:D+68X0/M3VStzfpO2NvTVwMhB+m2Vw0aTYfjuNWP7p3W:D+RX0E3VStzRO+vTyMhBF2Vw0agj4GdW
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3808 is-H0IAU.tmp 840 SplitFiles118.exe 4836 iB9rLK0.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 SplitFiles118.exe -
Loads dropped DLL 1 IoCs
pid Process 3808 is-H0IAU.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 17 IoCs
description ioc Process File created C:\Program Files (x86)\Split Files\language\is-S6QAO.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-71PO0.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-2HRBC.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-PPGMR.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\is-GBF2V.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\is-BMRFV.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-G922I.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-2U55P.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\is-P3JG9.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\is-4MU14.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\is-0CAUI.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-A4JD7.tmp is-H0IAU.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-B4425.tmp is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\language\is-LOU25.tmp is-H0IAU.tmp File opened for modification C:\Program Files (x86)\Split Files\SplitFiles118.exe is-H0IAU.tmp File created C:\Program Files (x86)\Split Files\unins000.dat is-H0IAU.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 3364 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 840 SplitFiles118.exe 840 SplitFiles118.exe 840 SplitFiles118.exe 840 SplitFiles118.exe 840 SplitFiles118.exe 840 SplitFiles118.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3364 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
description pid Process procid_target PID 5028 wrote to memory of 3808 5028 file.exe 81 PID 5028 wrote to memory of 3808 5028 file.exe 81 PID 5028 wrote to memory of 3808 5028 file.exe 81 PID 3808 wrote to memory of 840 3808 is-H0IAU.tmp 82 PID 3808 wrote to memory of 840 3808 is-H0IAU.tmp 82 PID 3808 wrote to memory of 840 3808 is-H0IAU.tmp 82 PID 840 wrote to memory of 4836 840 SplitFiles118.exe 83 PID 840 wrote to memory of 4836 840 SplitFiles118.exe 83 PID 840 wrote to memory of 4836 840 SplitFiles118.exe 83 PID 840 wrote to memory of 2568 840 SplitFiles118.exe 91 PID 840 wrote to memory of 2568 840 SplitFiles118.exe 91 PID 840 wrote to memory of 2568 840 SplitFiles118.exe 91 PID 2568 wrote to memory of 3364 2568 cmd.exe 93 PID 2568 wrote to memory of 3364 2568 cmd.exe 93 PID 2568 wrote to memory of 3364 2568 cmd.exe 93
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:5028 -
C:\Users\Admin\AppData\Local\Temp\is-H50R3.tmp\is-H0IAU.tmp"C:\Users\Admin\AppData\Local\Temp\is-H50R3.tmp\is-H0IAU.tmp" /SL4 $10006C "C:\Users\Admin\AppData\Local\Temp\file.exe" 1782872 1331202⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3808 -
C:\Program Files (x86)\Split Files\SplitFiles118.exe"C:\Program Files (x86)\Split Files\SplitFiles118.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:840 -
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\iB9rLK0.exe4⤵
- Executes dropped EXE
PID:4836
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles118.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles118.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:2568 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "SplitFiles118.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3364
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3.3MB
MD568f987ee572592c15f1e04387d510073
SHA18d5fcca50b46cf95d8c9a7e9cb8638b2c937bada
SHA256f567a869e1a300991ebc2b20f25e22848a8fc2d65848c77ac896528262529305
SHA5123fd02a001e035be114cdd3d176acd972469798bd61c3c85d8d69cf0fb7bedf6bfb633bab171a7d85cf30e5211b3cf568a34cf0843661c81f55ac62426f9dc664
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Filesize
3.3MB
MD568f987ee572592c15f1e04387d510073
SHA18d5fcca50b46cf95d8c9a7e9cb8638b2c937bada
SHA256f567a869e1a300991ebc2b20f25e22848a8fc2d65848c77ac896528262529305
SHA5123fd02a001e035be114cdd3d176acd972469798bd61c3c85d8d69cf0fb7bedf6bfb633bab171a7d85cf30e5211b3cf568a34cf0843661c81f55ac62426f9dc664
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
723KB
MD5703b4da86c2d38881230d26bc1051cb2
SHA113b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA25690b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b
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Filesize
723KB
MD5703b4da86c2d38881230d26bc1051cb2
SHA113b9e7582e94cb6e4f703bc08a28c53cdc003019
SHA25690b8f255f68be9f092608be15074b6fc3c4be724ae82dae5adb390307b121c89
SHA512e3d80bc78b41e24450effe46f713e9bf7fcd376141a3c6b3f20e3ec81c9c3ab85d300104b2dbbef9512f92a2b613dbc326899e442dc669490c1e192f79a7363b
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c