Analysis
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max time kernel
142s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
29/12/2022, 12:16
Static task
static1
Behavioral task
behavioral1
Sample
121c8d638b96a43eb3c2fb623e467536.exe
Resource
win7-20220812-en
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
nymaim
45.139.105.171
85.31.46.167
Signatures
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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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 121c8d638b96a43eb3c2fb623e467536.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 10 IoCs
pid pid_target Process procid_target 4844 2268 WerFault.exe 79 4116 2268 WerFault.exe 79 3340 2268 WerFault.exe 79 1096 2268 WerFault.exe 79 4756 2268 WerFault.exe 79 1632 2268 WerFault.exe 79 4400 2268 WerFault.exe 79 1920 2268 WerFault.exe 79 2144 2268 WerFault.exe 79 3148 2268 WerFault.exe 79 -
Kills process with taskkill 1 IoCs
pid Process 1268 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1268 taskkill.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2268 wrote to memory of 2760 2268 121c8d638b96a43eb3c2fb623e467536.exe 98 PID 2268 wrote to memory of 2760 2268 121c8d638b96a43eb3c2fb623e467536.exe 98 PID 2268 wrote to memory of 2760 2268 121c8d638b96a43eb3c2fb623e467536.exe 98 PID 2760 wrote to memory of 1268 2760 cmd.exe 101 PID 2760 wrote to memory of 1268 2760 cmd.exe 101 PID 2760 wrote to memory of 1268 2760 cmd.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"C:\Users\Admin\AppData\Local\Temp\121c8d638b96a43eb3c2fb623e467536.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2268 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 4562⤵
- Program crash
PID:4844
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 7722⤵
- Program crash
PID:4116
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 8122⤵
- Program crash
PID:3340
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 8122⤵
- Program crash
PID:1096
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 7722⤵
- Program crash
PID:4756
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 9282⤵
- Program crash
PID:1632
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 10202⤵
- Program crash
PID:4400
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 10882⤵
- Program crash
PID:1920
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 13562⤵
- Program crash
PID:2144
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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⤵
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "121c8d638b96a43eb3c2fb623e467536.exe" /f3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1268
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 4682⤵
- Program crash
PID:3148
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2268 -ip 22681⤵PID:2640
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 2268 -ip 22681⤵PID:2252
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2268 -ip 22681⤵PID:5108
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2268 -ip 22681⤵PID:1192
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2268 -ip 22681⤵PID:1360
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2268 -ip 22681⤵PID:4436
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2268 -ip 22681⤵PID:4232
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 608 -p 2268 -ip 22681⤵PID:4984
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 624 -p 2268 -ip 22681⤵PID:4416
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 652 -p 2268 -ip 22681⤵PID:3248