Analysis
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max time kernel
88s -
max time network
107s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
08-03-2023 02:30
Static task
static1
Behavioral task
behavioral1
Sample
88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe
Resource
win10v2004-20230221-en
General
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Target
88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe
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Size
550KB
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MD5
da17fc5dd66861c9a11d1ea8c10a9b23
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SHA1
9a65b42fe775d5dd2f0a4c6969cddb449b24228c
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SHA256
88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3
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SHA512
04f2375f545bcef77cefbb5e306c553f5ac0bdffc3eda200e85167fffd19ea2988207b79eba4f2bb36cf20671436a597befb419256c15dd3e6ce5db66ec0aae6
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SSDEEP
12288:WMr+y90Aahimz7AuxqVlVWvo6dfmG85DXHhzjGU:wyZsVAuxYj+6DlH
Malware Config
Extracted
redline
fud
193.233.20.27:4123
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auth_value
cddc991efd6918ad5321d80dac884b40
Signatures
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description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection r5520jj.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" r5520jj.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1" r5520jj.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" r5520jj.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1" r5520jj.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" r5520jj.exe -
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine payload 18 IoCs
resource yara_rule behavioral1/memory/1172-183-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-184-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-186-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-188-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-190-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-192-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-194-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-196-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-198-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-200-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-202-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-204-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-206-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-208-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-210-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-212-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-214-0x0000000002630000-0x000000000266E000-memory.dmp family_redline behavioral1/memory/1172-216-0x0000000002630000-0x000000000266E000-memory.dmp family_redline -
Executes dropped EXE 2 IoCs
pid Process 2320 r5520jj.exe 1172 w90kz45.exe -
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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description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features r5520jj.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" r5520jj.exe -
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\"" 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Program crash 2 IoCs
pid pid_target Process procid_target 3568 2320 WerFault.exe 85 984 1172 WerFault.exe 90 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2320 r5520jj.exe 2320 r5520jj.exe 1172 w90kz45.exe 1172 w90kz45.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2320 r5520jj.exe Token: SeDebugPrivilege 1172 w90kz45.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 740 wrote to memory of 2320 740 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe 85 PID 740 wrote to memory of 2320 740 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe 85 PID 740 wrote to memory of 2320 740 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe 85 PID 740 wrote to memory of 1172 740 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe 90 PID 740 wrote to memory of 1172 740 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe 90 PID 740 wrote to memory of 1172 740 88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe"C:\Users\Admin\AppData\Local\Temp\88e2c224f157a4c5110c8ad9c703f79a4c92528bfabfb16b6e362a274157e1c3.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:740 -
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\r5520jj.exeC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\r5520jj.exe2⤵
- Modifies Windows Defender Real-time Protection settings
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2320 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 10843⤵
- Program crash
PID:3568
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C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\w90kz45.exeC:\Users\Admin\AppData\Local\Temp\IXP000.TMP\w90kz45.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1172 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1172 -s 13443⤵
- Program crash
PID:984
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2320 -ip 23201⤵PID:2964
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1172 -ip 11721⤵PID:2160
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
322KB
MD58141937b23cd1895e561d8e90fdeeff3
SHA16f810e9e480564f5837461f8ccdd07c951a1bece
SHA256ddda10348c77cf0a1539c3a42ce4f71e2c1895ab9b77348256e0a1f01c0936b6
SHA51240957cd33c4be1dab98ac0c40424c868aa3be6f6265fa28df050e5a4844ac6324acb93770bc6cb7cafedabc93fab9b9179a6e6525f6b3dd6fa9e31b4d5da5bec
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Filesize
322KB
MD58141937b23cd1895e561d8e90fdeeff3
SHA16f810e9e480564f5837461f8ccdd07c951a1bece
SHA256ddda10348c77cf0a1539c3a42ce4f71e2c1895ab9b77348256e0a1f01c0936b6
SHA51240957cd33c4be1dab98ac0c40424c868aa3be6f6265fa28df050e5a4844ac6324acb93770bc6cb7cafedabc93fab9b9179a6e6525f6b3dd6fa9e31b4d5da5bec
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Filesize
380KB
MD57703b533b6e72a90817e85a9fd1f7126
SHA1f4cc506f60b36ddf6474504989a9b171b1418570
SHA256f6660c406e330206727065c74443d77ab4689c53984e6c2158f130c03cd2e86d
SHA5123ee516734c6246d7b492af2a6ba3cae18d59d83cc281d75544b29918073a472b37d52ad6cf5c78bb36e81cc67e27d5cb2b0a1e6af098eaa4b5f5a3441f8ce031
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Filesize
380KB
MD57703b533b6e72a90817e85a9fd1f7126
SHA1f4cc506f60b36ddf6474504989a9b171b1418570
SHA256f6660c406e330206727065c74443d77ab4689c53984e6c2158f130c03cd2e86d
SHA5123ee516734c6246d7b492af2a6ba3cae18d59d83cc281d75544b29918073a472b37d52ad6cf5c78bb36e81cc67e27d5cb2b0a1e6af098eaa4b5f5a3441f8ce031