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Analysis
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max time kernel
94s -
max time network
114s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
18/04/2024, 06:13
Static task
static1
Behavioral task
behavioral1
Sample
f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe
Resource
win10v2004-20240412-en
General
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Target
f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe
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Size
1.3MB
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MD5
f76d8260aeef01c0040deb7e4987aced
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SHA1
52794a6360e479738a7c418a3e8275378239ef33
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SHA256
e8cd0ef98abb8b7f8c3a7c05c7e1748963d0e4c23ef29d0dc350ed1373833a7c
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SHA512
0f4bccb9fa5457255847dd1c6fbccc64cb82a057fd2daf47f7fdb83b6363d82b81b0bed75830bb4a15ee7ec9342dbce5628d5867d9b827b18879d6fad978c426
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SSDEEP
24576:TNR2zaQBt37/CZ0w1PeWnzqhqCC6+PEDdZp/K/LsOBQ8tcp/:yUsrC6aEpZpbZ
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 3 IoCs
resource yara_rule behavioral2/memory/1416-0-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1416-2-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/1416-21-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/2284-20-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral2/memory/2284-19-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 2 IoCs
resource yara_rule behavioral2/memory/2284-20-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral2/memory/2284-19-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
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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resource yara_rule behavioral2/memory/876-5-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/876-7-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/876-9-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/876-11-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/876-10-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/2284-14-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/2284-16-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/2284-18-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/2284-20-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/2284-19-0x0000000000400000-0x000000000041F000-memory.dmp upx -
Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts RegAsm.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\I7ak1YeiVt_4Udke = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe" f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 2168 set thread context of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 1416 set thread context of 876 1416 RegAsm.exe 93 PID 1416 set thread context of 2284 1416 RegAsm.exe 94 -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1416 RegAsm.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 2168 wrote to memory of 1416 2168 f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe 92 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 876 1416 RegAsm.exe 93 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94 PID 1416 wrote to memory of 2284 1416 RegAsm.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f76d8260aeef01c0040deb7e4987aced_JaffaCakes118.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1416 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe/scomma "C:\Users\Admin\AppData\Local\Temp\47ICxFp7rk.ini"3⤵PID:876
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe/scomma "C:\Users\Admin\AppData\Local\Temp\u9DY80IbPK.ini"3⤵
- Accesses Microsoft Outlook accounts
PID:2284
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
5B
MD5d1ea279fb5559c020a1b4137dc4de237
SHA1db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3