Analysis
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max time kernel
4294182s -
max time network
162s -
platform
windows7_x64 -
resource
win7-20220310-en -
submitted
15-03-2022 13:58
Static task
static1
Behavioral task
behavioral1
Sample
fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe
Resource
win7-20220310-en
Behavioral task
behavioral2
Sample
fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe
Resource
win10v2004-en-20220113
General
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Target
fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe
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Size
1.0MB
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MD5
831764a8fcbdc755f5b41a091f485c26
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SHA1
be4eb6388f79d7f11bcbfe9209ef4390d6ef14c7
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SHA256
fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c
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SHA512
19b4cc5454eda7089903b5276038efcf56ee1cb215dec06262329c33c4b7ff71c0a02a7e2bad878854dd4b31ae4ea43c2e393608e231cfcb123681ff67d2ec18
Malware Config
Signatures
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ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
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ISR Stealer Payload 2 IoCs
resource yara_rule behavioral1/memory/784-72-0x0000000000400000-0x0000000000470000-memory.dmp family_isrstealer behavioral1/memory/784-74-0x0000000000400000-0x0000000000470000-memory.dmp family_isrstealer -
NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral1/memory/468-148-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 3 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral1/memory/1152-114-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral1/memory/1152-138-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral1/memory/1152-147-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView -
Nirsoft 5 IoCs
resource yara_rule behavioral1/memory/1152-114-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral1/memory/1152-138-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral1/memory/1152-147-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral1/memory/1080-146-0x0000000000400000-0x0000000000426000-memory.dmp Nirsoft behavioral1/memory/468-148-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
Executes dropped EXE 6 IoCs
pid Process 2000 xDlKi.exe 784 cvtres.exe 988 cvtres.exe 1152 cvtres.exe 1080 cvtres.exe 468 cvtres.exe -
resource yara_rule behavioral1/memory/1080-120-0x0000000000400000-0x0000000000426000-memory.dmp upx behavioral1/memory/468-126-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/1080-131-0x0000000000400000-0x0000000000426000-memory.dmp upx behavioral1/memory/1080-137-0x0000000000400000-0x0000000000426000-memory.dmp upx behavioral1/memory/1080-146-0x0000000000400000-0x0000000000426000-memory.dmp upx behavioral1/memory/468-145-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/468-133-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/468-148-0x0000000000400000-0x000000000041F000-memory.dmp upx -
Loads dropped DLL 19 IoCs
pid Process 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 2000 xDlKi.exe 2000 xDlKi.exe 2000 xDlKi.exe 2000 xDlKi.exe 784 cvtres.exe 784 cvtres.exe 784 cvtres.exe 988 cvtres.exe 988 cvtres.exe 988 cvtres.exe 988 cvtres.exe 988 cvtres.exe 1080 cvtres.exe 1080 cvtres.exe 468 cvtres.exe 1152 cvtres.exe 1152 cvtres.exe 468 cvtres.exe -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts cvtres.exe -
Suspicious use of SetThreadContext 5 IoCs
description pid Process procid_target PID 2000 set thread context of 784 2000 xDlKi.exe 30 PID 784 set thread context of 988 784 cvtres.exe 31 PID 988 set thread context of 1152 988 cvtres.exe 32 PID 988 set thread context of 1080 988 cvtres.exe 33 PID 988 set thread context of 468 988 cvtres.exe 34 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 cvtres.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 cvtres.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 cvtres.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2000 xDlKi.exe 2000 xDlKi.exe 784 cvtres.exe 784 cvtres.exe 784 cvtres.exe 784 cvtres.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2000 xDlKi.exe Token: SeDebugPrivilege 1080 cvtres.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 784 cvtres.exe -
Suspicious use of WriteProcessMemory 60 IoCs
description pid Process procid_target PID 1660 wrote to memory of 2000 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 29 PID 1660 wrote to memory of 2000 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 29 PID 1660 wrote to memory of 2000 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 29 PID 1660 wrote to memory of 2000 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 29 PID 1660 wrote to memory of 2000 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 29 PID 1660 wrote to memory of 2000 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 29 PID 1660 wrote to memory of 2000 1660 fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe 29 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 2000 wrote to memory of 784 2000 xDlKi.exe 30 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 784 wrote to memory of 988 784 cvtres.exe 31 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1152 988 cvtres.exe 32 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 1080 988 cvtres.exe 33 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34 PID 988 wrote to memory of 468 988 cvtres.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe"C:\Users\Admin\AppData\Local\Temp\fb0de34718e9a60aba9c45ef7a3f2c1afb44b7b9568d8ef4c7c76f51904e5f5c.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1660 -
C:\Users\Admin\AppData\Local\Temp\xDlKi.exe"C:\Users\Admin\AppData\Local\Temp\xDlKi.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000 -
C:\Users\Admin\AppData\Local\Temp\cvtres.exeC:\Users\Admin\AppData\Local\Temp\\cvtres.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:784 -
C:\Users\Admin\AppData\Local\Temp\cvtres.exe"C:\Users\Admin\AppData\Local\Temp\cvtres.exe"4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:988 -
C:\Users\Admin\AppData\Local\Temp\cvtres.exe"C:\Users\Admin\AppData\Local\Temp\cvtres.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp5⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1152
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C:\Users\Admin\AppData\Local\Temp\cvtres.exe"C:\Users\Admin\AppData\Local\Temp\cvtres.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp5⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:1080
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C:\Users\Admin\AppData\Local\Temp\cvtres.exe"C:\Users\Admin\AppData\Local\Temp\cvtres.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp5⤵
- Executes dropped EXE
- Loads dropped DLL
- Accesses Microsoft Outlook accounts
PID:468
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