Analysis
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max time kernel
118s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
26-12-2023 13:24
Static task
static1
Behavioral task
behavioral1
Sample
723a1496ac20595d955bbc575f61ff38.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
723a1496ac20595d955bbc575f61ff38.exe
Resource
win10v2004-20231215-en
General
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Target
723a1496ac20595d955bbc575f61ff38.exe
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Size
400KB
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MD5
723a1496ac20595d955bbc575f61ff38
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SHA1
d59a78036ee7395f352ae2e40ed59d739d481704
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SHA256
45c658ef310219f5a5ab81c9ef0095b9cb076403531874c35296e0a975962193
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SHA512
d931c295ae0d4d9c564becb977b3ac8f2fd84275db99a32f79450d8b766c9c1f5fff7f50fe4293540a30a8f6c31d71eff5a8c9d311f7c56b1ce03dc2af454c34
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SSDEEP
6144:aoffjUCgjgXbZxx/XHTNmF1WWC04Wzva6X:aAIibZX4004UXX
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 4 IoCs
resource yara_rule behavioral1/memory/1904-6-0x0000000000400000-0x0000000000414000-memory.dmp family_isrstealer behavioral1/memory/1904-10-0x0000000000400000-0x0000000000414000-memory.dmp family_isrstealer behavioral1/memory/1904-15-0x0000000000400000-0x0000000000414000-memory.dmp family_isrstealer behavioral1/memory/1904-17-0x0000000000400000-0x0000000000414000-memory.dmp family_isrstealer -
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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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2644 set thread context of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1904 723a1496ac20595d955bbc575f61ff38.exe 1904 723a1496ac20595d955bbc575f61ff38.exe 1904 723a1496ac20595d955bbc575f61ff38.exe 1904 723a1496ac20595d955bbc575f61ff38.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2644 723a1496ac20595d955bbc575f61ff38.exe 1904 723a1496ac20595d955bbc575f61ff38.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28 PID 2644 wrote to memory of 1904 2644 723a1496ac20595d955bbc575f61ff38.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\723a1496ac20595d955bbc575f61ff38.exe"C:\Users\Admin\AppData\Local\Temp\723a1496ac20595d955bbc575f61ff38.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2644 -
C:\Users\Admin\AppData\Local\Temp\723a1496ac20595d955bbc575f61ff38.exe
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:1904
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