Analysis
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max time kernel
167s -
max time network
211s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 03:40
Static task
static1
Behavioral task
behavioral1
Sample
b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe
Resource
win10v2004-20221111-en
General
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Target
b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe
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Size
218KB
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MD5
bcafd7b7645e9934302fb83785a711ec
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SHA1
27eff28b3838667f402bbb31708cfb37b2ecc483
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SHA256
b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d
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SHA512
701fc5915ad5977f725c16ebff4b831879e90df587ef2a5ee8b1e9711efdcb6a43011c95e3abd2f3c146b528e3504925940c883f327f7dab75784f0f3382f2c6
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SSDEEP
6144:c8dNXSEqoFkV4UDr/l6lcb8uGtIC16m+9J:HqYkdr8SZw6R9J
Malware Config
Signatures
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Loads dropped DLL 4 IoCs
Processes:
b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exepid process 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
explorer.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\udezspaq = "\"C:\\Windows\\ykahetym.exe\"" explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run explorer.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exeb403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exedescription pid process target process PID 3276 set thread context of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 5048 set thread context of 4368 5048 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe explorer.exe -
Drops file in Windows directory 2 IoCs
Processes:
explorer.exedescription ioc process File opened for modification C:\Windows\ykahetym.exe explorer.exe File created C:\Windows\ykahetym.exe explorer.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 688 vssadmin.exe -
Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs
Processes:
explorer.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0" explorer.exe Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Internet Explorer\PhishingFilter explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0" explorer.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid process Token: SeBackupPrivilege 5084 vssvc.exe Token: SeRestorePrivilege 5084 vssvc.exe Token: SeAuditPrivilege 5084 vssvc.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exeb403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exeexplorer.exedescription pid process target process PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 3276 wrote to memory of 5048 3276 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe PID 5048 wrote to memory of 4368 5048 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe explorer.exe PID 5048 wrote to memory of 4368 5048 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe explorer.exe PID 5048 wrote to memory of 4368 5048 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe explorer.exe PID 5048 wrote to memory of 4368 5048 b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe explorer.exe PID 4368 wrote to memory of 688 4368 explorer.exe vssadmin.exe PID 4368 wrote to memory of 688 4368 explorer.exe vssadmin.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe"C:\Users\Admin\AppData\Local\Temp\b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe"C:\Users\Admin\AppData\Local\Temp\b403af902f115127cd9484244917b431ec9fd746feda7fb31e2724ff201e985d.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exe"C:\Windows\system32\explorer.exe"3⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer Phishing Filter
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet4⤵
- Interacts with shadow copies
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\ProgramData\aduqeliginopicah\01000000Filesize
218KB
MD5134428cab0b0b2f11889655db9c5e334
SHA13996707f723e59189333505ba59ee2d0be42912b
SHA256810e660a561c8c5f277263b66be8563a20c6b5d8b2e80047c222948ebb495c7a
SHA512546a53350f67f111142780a78ae0647919faa83d4d9c3633a1a8cc42df61a4e52ec1bfd8a93630387ae528aef40d2a7cf4d280e738c7813ab3cb59c53ba1b136
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C:\Users\Admin\AppData\Local\Temp\nse76D7.tmp\UserInfo.dllFilesize
4KB
MD5d9a3fc12d56726dde60c1ead1df366f7
SHA1f531768159c14f07ac896437445652b33750a237
SHA256401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a
SHA5126b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51
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C:\Users\Admin\AppData\Local\Temp\nse76D7.tmp\UserInfo.dllFilesize
4KB
MD5d9a3fc12d56726dde60c1ead1df366f7
SHA1f531768159c14f07ac896437445652b33750a237
SHA256401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a
SHA5126b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51
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C:\Users\Admin\AppData\Local\Temp\nse76D7.tmp\UserInfo.dllFilesize
4KB
MD5d9a3fc12d56726dde60c1ead1df366f7
SHA1f531768159c14f07ac896437445652b33750a237
SHA256401f1a02000ff7cf9853d964dcba77e6f0fa8e57256b11ed3c01171d7a97388a
SHA5126b06e3446df419151dd20cdb1d9c595fe9fb0972e7dfc50dadeea9f868d8ef0cd4cefcb18c7ebfc0d2a3e9171f8aa1f9fe762f54c374667f6060e8ce7e845f51
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C:\Users\Admin\AppData\Local\Temp\nse76D7.tmp\perches.dllFilesize
12KB
MD57798378f2c9c626736b5e3047fa9101c
SHA15d75a899a9d48f8cfb061e89a5e0696c6ad53d5f
SHA256a8143111f429e97aae802574743245ad3037dca568ba82d73fca7a5eb023d113
SHA512aa74fad8301dff30db8afd0dfef6ff8f571b89e4bf6822e57aa39c05b1b5c688853ac46442d951651cd27ef902ebb9d83c1ad36d5ce25f24caa089f335ec35f1
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memory/688-148-0x0000000000000000-mapping.dmp
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memory/4368-142-0x0000000001140000-0x000000000117C000-memory.dmpFilesize
240KB
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memory/4368-141-0x0000000000000000-mapping.dmp
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memory/4368-147-0x0000000001140000-0x000000000117C000-memory.dmpFilesize
240KB
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memory/5048-140-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/5048-139-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/5048-144-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/5048-146-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/5048-137-0x0000000000400000-0x000000000043A000-memory.dmpFilesize
232KB
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memory/5048-136-0x0000000000000000-mapping.dmp