Analysis
- max time kernel
149s - max time network
137s - platform
windows10_x64 - resource
win10v200430 - submitted
15/07/2020, 14:47
Static task
static1
Behavioral task
behavioral1
Sample
Invoice For H sbc Payment Instruction.exe
Resource
win7
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Invoice For H sbc Payment Instruction.exe
Resource
win10v200430
windows10_x64
0 signatures
0 seconds
General
- Target Invoice For H sbc Payment Instruction.exe
- Size 340KB
- Sample200715-tajf5fb596
- SHA256 d0604fe76ff35e2311825f1822171208bd472c764dfbdbf45e20fad47f6a4472
- MD5 d94d1332d48398914da9f4b343c528e2
- SHA1 8743bccc3cd8c5732470d831f90e614764068171
- SHA512 33b1548584a316cb09bacfbb79bbce37800eb62441459766a75e943789c1c74bd991c549bc456a010826e87823145912f22ea9f3c6e745696c26b4066b48f5d0
- MD5 SHA1 SHA512
Score
8/10
Malware Config
Signatures
- Enumerates system info in registry 2 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe - Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Kxhcd\utpd0zjj45nkx.exe chkdsk.exe - System policy modification 1 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer chkdsk.exe -
description ioc Process Key created \Registry\User\S-1-5-21-1231583446-2617009595-2137880041-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 chkdsk.exe - Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 1732 wrote to memory of 3776 1732 Invoice For H sbc Payment Instruction.exe 68 PID 1732 wrote to memory of 3776 1732 Invoice For H sbc Payment Instruction.exe 68 PID 1732 wrote to memory of 3776 1732 Invoice For H sbc Payment Instruction.exe 68 PID 1732 wrote to memory of 3776 1732 Invoice For H sbc Payment Instruction.exe 68 PID 3000 wrote to memory of 2228 3000 Explorer.EXE 69 PID 3000 wrote to memory of 2228 3000 Explorer.EXE 69 PID 3000 wrote to memory of 2228 3000 Explorer.EXE 69 PID 2228 wrote to memory of 2132 2228 chkdsk.exe 70 PID 2228 wrote to memory of 2132 2228 chkdsk.exe 70 PID 2228 wrote to memory of 2132 2228 chkdsk.exe 70 PID 2228 wrote to memory of 3908 2228 chkdsk.exe 76 PID 2228 wrote to memory of 3908 2228 chkdsk.exe 76 PID 2228 wrote to memory of 3908 2228 chkdsk.exe 76 PID 2228 wrote to memory of 3444 2228 chkdsk.exe 78 PID 2228 wrote to memory of 3444 2228 chkdsk.exe 78 PID 2228 wrote to memory of 3444 2228 chkdsk.exe 78 - Suspicious behavior: MapViewOfSection 8 IoCs
pid Process 1732 Invoice For H sbc Payment Instruction.exe 3776 RegAsm.exe 3776 RegAsm.exe 3776 RegAsm.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1732 set thread context of 3776 1732 Invoice For H sbc Payment Instruction.exe 68 PID 3776 set thread context of 3000 3776 RegAsm.exe 56 PID 2228 set thread context of 3000 2228 chkdsk.exe 56 - Suspicious behavior: EnumeratesProcesses 56 IoCs
pid Process 3776 RegAsm.exe 3776 RegAsm.exe 3776 RegAsm.exe 3776 RegAsm.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe 2228 chkdsk.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HJdyTuap.exe Invoice For H sbc Payment Instruction.exe - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeDebugPrivilege 3776 RegAsm.exe Token: SeDebugPrivilege 2228 chkdsk.exe Token: SeShutdownPrivilege 3000 Explorer.EXE Token: SeCreatePagefilePrivilege 3000 Explorer.EXE Token: SeShutdownPrivilege 3000 Explorer.EXE Token: SeCreatePagefilePrivilege 3000 Explorer.EXE Token: SeShutdownPrivilege 3000 Explorer.EXE Token: SeCreatePagefilePrivilege 3000 Explorer.EXE Token: SeShutdownPrivilege 3000 Explorer.EXE Token: SeCreatePagefilePrivilege 3000 Explorer.EXE Token: SeShutdownPrivilege 3000 Explorer.EXE Token: SeCreatePagefilePrivilege 3000 Explorer.EXE - Adds policy Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run chkdsk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\LLM4U08XYJP8 = "C:\\Program Files (x86)\\Kxhcd\\utpd0zjj45nkx.exe" chkdsk.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of AdjustPrivilegeToken
PID:3000 -
C:\Users\Admin\AppData\Local\Temp\Invoice For H sbc Payment Instruction.exe"C:\Users\Admin\AppData\Local\Temp\Invoice For H sbc Payment Instruction.exe"2⤵
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Drops startup file
PID:1732 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3776
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C:\Windows\SysWOW64\chkdsk.exe"C:\Windows\SysWOW64\chkdsk.exe"2⤵
- Enumerates system info in registry
- Drops file in Program Files directory
- System policy modification
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Adds policy Run key to start application
PID:2228 -
C:\Windows\SysWOW64\cmd.exe/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵PID:2132
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C:\Windows\SysWOW64\cmd.exe/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V3⤵PID:3908
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵PID:3444
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