Resubmissions
08-05-2023 12:04
230508-n83alscc6v 1014-02-2023 12:24
230214-pljenacf6s 114-02-2023 12:00
230214-n6rq4adb47 1014-02-2023 11:52
230214-n1s2zace3s 1024-01-2023 09:45
230124-lrfn6sad97 10Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
08-05-2023 12:04
Static task
static1
Behavioral task
behavioral1
Sample
8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe
Resource
win10v2004-20230220-en
General
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Target
8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe
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Size
232KB
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MD5
f6254a206b59207201f38f69fb018932
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SHA1
4109d2edf584ce7f8104410eaa02ddae1aa37117
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SHA256
8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45
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SHA512
bf6ab8ed99b730a364affed3f341387d82a5fed4ae052f4e897726adae2e963182083a3ba6fa52dfa6f2bd9cc9c3b92643279f46bebf931288545938da5a01b6
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SSDEEP
3072:aIGGLok59Gt+ECvLFwyvBnlS1g/tK8MJ2LJDhzLrcSb54VIcVTuh:TLoYC+rK+ztK8MY3bIr
Malware Config
Extracted
tofsee
svartalfheim.top
jotunheim.name
Signatures
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Creates new service(s) 1 TTPs
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Modifies Windows Firewall 1 TTPs 1 IoCs
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Sets service image path in registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ezimypwz\ImagePath = "C:\\Windows\\SysWOW64\\ezimypwz\\icemicib.exe" svchost.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe -
Executes dropped EXE 1 IoCs
Processes:
icemicib.exepid process 1780 icemicib.exe -
Drops file in System32 directory 1 IoCs
Processes:
svchost.exedescription ioc process File created C:\Windows\SysWOW64\config\systemprofile:.repos svchost.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
icemicib.exedescription pid process target process PID 1780 set thread context of 3324 1780 icemicib.exe svchost.exe -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exesc.exesc.exepid process 112 sc.exe 4264 sc.exe 4580 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 3152 4380 WerFault.exe 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe 4320 1780 WerFault.exe icemicib.exe -
Modifies data under HKEY_USERS 2 IoCs
Processes:
svchost.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Control Panel\Buses svchost.exe Set value (data) \REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 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 svchost.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exeicemicib.exedescription pid process target process PID 4380 wrote to memory of 4436 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe cmd.exe PID 4380 wrote to memory of 4436 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe cmd.exe PID 4380 wrote to memory of 4436 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe cmd.exe PID 4380 wrote to memory of 4936 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe cmd.exe PID 4380 wrote to memory of 4936 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe cmd.exe PID 4380 wrote to memory of 4936 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe cmd.exe PID 4380 wrote to memory of 4580 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 4580 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 4580 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 112 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 112 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 112 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 4264 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 4264 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 4264 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe sc.exe PID 4380 wrote to memory of 4868 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe netsh.exe PID 4380 wrote to memory of 4868 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe netsh.exe PID 4380 wrote to memory of 4868 4380 8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe netsh.exe PID 1780 wrote to memory of 3324 1780 icemicib.exe svchost.exe PID 1780 wrote to memory of 3324 1780 icemicib.exe svchost.exe PID 1780 wrote to memory of 3324 1780 icemicib.exe svchost.exe PID 1780 wrote to memory of 3324 1780 icemicib.exe svchost.exe PID 1780 wrote to memory of 3324 1780 icemicib.exe svchost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe"C:\Users\Admin\AppData\Local\Temp\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ezimypwz\2⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\icemicib.exe" C:\Windows\SysWOW64\ezimypwz\2⤵
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create ezimypwz binPath= "C:\Windows\SysWOW64\ezimypwz\icemicib.exe /d\"C:\Users\Admin\AppData\Local\Temp\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description ezimypwz "wifi internet conection"2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start ezimypwz2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul2⤵
- Modifies Windows Firewall
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 6562⤵
- Program crash
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C:\Windows\SysWOW64\ezimypwz\icemicib.exeC:\Windows\SysWOW64\ezimypwz\icemicib.exe /d"C:\Users\Admin\AppData\Local\Temp\8bfa1accffb316ba6411badba264e55b04bbe73ec58c79e85f7e523bf1ecdc45.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Drops file in System32 directory
- Modifies data under HKEY_USERS
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1780 -s 5162⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4380 -ip 43801⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1780 -ip 17801⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\icemicib.exeFilesize
10.4MB
MD5f07ae1b88278ff4cf472d4aa1c3ac70e
SHA1e327744f44eaec52d06132d8411659d173513fe0
SHA25687c2cd21e6f90fe388553dec8bf65a49ea526deeede7fe496f98f6cc7441c156
SHA512453d2b22d63a02c93437bccf62d871b47ed89cb383063e7b01baa5b5b8f7b44ffcbd72ae3fd89cede26e9cc64f120dfc0ec386a13e4999d14be51008273c1452
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C:\Windows\SysWOW64\ezimypwz\icemicib.exeFilesize
10.4MB
MD5f07ae1b88278ff4cf472d4aa1c3ac70e
SHA1e327744f44eaec52d06132d8411659d173513fe0
SHA25687c2cd21e6f90fe388553dec8bf65a49ea526deeede7fe496f98f6cc7441c156
SHA512453d2b22d63a02c93437bccf62d871b47ed89cb383063e7b01baa5b5b8f7b44ffcbd72ae3fd89cede26e9cc64f120dfc0ec386a13e4999d14be51008273c1452
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memory/1780-144-0x0000000000400000-0x000000000045E000-memory.dmpFilesize
376KB
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memory/3324-140-0x0000000000720000-0x0000000000735000-memory.dmpFilesize
84KB
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memory/3324-143-0x0000000000720000-0x0000000000735000-memory.dmpFilesize
84KB
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memory/3324-145-0x0000000000720000-0x0000000000735000-memory.dmpFilesize
84KB
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memory/3324-146-0x0000000000720000-0x0000000000735000-memory.dmpFilesize
84KB
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memory/3324-147-0x0000000000720000-0x0000000000735000-memory.dmpFilesize
84KB
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memory/4380-135-0x0000000002050000-0x0000000002063000-memory.dmpFilesize
76KB
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memory/4380-139-0x0000000000400000-0x000000000045E000-memory.dmpFilesize
376KB