Analysis
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max time kernel
43s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
29/12/2022, 12:16
Static task
static1
Behavioral task
behavioral1
Sample
121c8d638b96a43eb3c2fb623e467536.exe
Resource
win7-20220812-en
6 signatures
150 seconds
General
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Target
121c8d638b96a43eb3c2fb623e467536.exe
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Size
371KB
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MD5
121c8d638b96a43eb3c2fb623e467536
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SHA1
51ce2503b96428fd2c647816728e7ba8b97ae1ec
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SHA256
3c476ad15acd041a55c25fe36c6eb40b5f4112d3bb5bc36ca1c619a9269c20bc
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SHA512
73b076553727885b8d94fd92b9e33e23a4f97d98ec2453be78acda53ebafd6f9a9c11e56be0ef23c87cc535432ab885c03a84b55f25acb80bc2e0928be72fb63
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SSDEEP
6144:VkUXaLyOOZ/7mXe5Bm0O7lcd5UcJmL6CKPT9YfYAuw7n1HbwZoV9J:hK2XKO5k0O7mucYOCKb9fAuw7
Malware Config
Extracted
Family
nymaim
C2
45.139.105.171
85.31.46.167
Signatures
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Deletes itself 1 IoCs
pid Process 892 cmd.exe -
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 268 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 268 taskkill.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 560 wrote to memory of 892 560 121c8d638b96a43eb3c2fb623e467536.exe 30 PID 560 wrote to memory of 892 560 121c8d638b96a43eb3c2fb623e467536.exe 30 PID 560 wrote to memory of 892 560 121c8d638b96a43eb3c2fb623e467536.exe 30 PID 560 wrote to memory of 892 560 121c8d638b96a43eb3c2fb623e467536.exe 30 PID 892 wrote to memory of 268 892 cmd.exe 32 PID 892 wrote to memory of 268 892 cmd.exe 32 PID 892 wrote to memory of 268 892 cmd.exe 32 PID 892 wrote to memory of 268 892 cmd.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:560 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "121c8d638b96a43eb3c2fb623e467536.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe" & exit2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:892 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "121c8d638b96a43eb3c2fb623e467536.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:268
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