Analysis
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max time kernel
119s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
21-03-2024 17:31
Static task
static1
Behavioral task
behavioral1
Sample
dc35c41440704458ed7a60c0ac026f62.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
dc35c41440704458ed7a60c0ac026f62.exe
Resource
win10v2004-20240319-en
General
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Target
dc35c41440704458ed7a60c0ac026f62.exe
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Size
408KB
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MD5
dc35c41440704458ed7a60c0ac026f62
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SHA1
28459a2a602943fb5f44cb7424061c390fefb502
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SHA256
4d4e7a37101a9fa0810a3ff324a87c302a1328dcaeae6a9c637752e871a1a678
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SHA512
f522adf75f7915caf3a87551f4704303ddde487da920c6a2a762d4fc821f5c6749b2496cdd5b5193252eb97f01cdcc3dc77584be90e6833e32f2410b955f8081
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SSDEEP
6144:v7l/Mts0sXrneChRWcSUEC8ctAom2C+do4ON1ZA0bYQpBuLGlY+6iPHS/ei:hMSeChscpEBctA2Q11aPQ3/6/ei
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 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1664-365-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer C:\Users\Admin\AppData\Local\Temp\EXIEY.exe family_isrstealer C:\Users\Admin\AppData\Local\Temp\EXIEY.exe family_isrstealer behavioral1/memory/1664-535-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer behavioral1/memory/1664-538-0x0000000000400000-0x0000000000459000-memory.dmp family_isrstealer -
NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral1/memory/2732-424-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView behavioral1/memory/2732-428-0x0000000000400000-0x0000000000454000-memory.dmp WebBrowserPassView -
Nirsoft 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2732-424-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft behavioral1/memory/2732-428-0x0000000000400000-0x0000000000454000-memory.dmp Nirsoft -
Executes dropped EXE 3 IoCs
Processes:
EXIEY.exeEXIEY.exeEXIEY.exepid process 896 EXIEY.exe 2608 EXIEY.exe 2732 EXIEY.exe -
Loads dropped DLL 7 IoCs
Processes:
dc35c41440704458ed7a60c0ac026f62.exeEXIEY.exeEXIEY.exepid process 1664 dc35c41440704458ed7a60c0ac026f62.exe 1664 dc35c41440704458ed7a60c0ac026f62.exe 1664 dc35c41440704458ed7a60c0ac026f62.exe 1664 dc35c41440704458ed7a60c0ac026f62.exe 1664 dc35c41440704458ed7a60c0ac026f62.exe 896 EXIEY.exe 2608 EXIEY.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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Processes:
resource yara_rule behavioral1/memory/1664-360-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral1/memory/1664-365-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral1/memory/1664-535-0x0000000000400000-0x0000000000459000-memory.dmp upx behavioral1/memory/1664-538-0x0000000000400000-0x0000000000459000-memory.dmp upx -
Suspicious use of SetThreadContext 3 IoCs
Processes:
dc35c41440704458ed7a60c0ac026f62.exeEXIEY.exeEXIEY.exedescription pid process target process PID 2236 set thread context of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 896 set thread context of 2608 896 EXIEY.exe EXIEY.exe PID 2608 set thread context of 2732 2608 EXIEY.exe EXIEY.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Processes:
EXIEY.exedescription ioc process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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 EXIEY.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 EXIEY.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 EXIEY.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8 EXIEY.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
EXIEY.exepid process 896 EXIEY.exe 896 EXIEY.exe 896 EXIEY.exe 896 EXIEY.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
dc35c41440704458ed7a60c0ac026f62.exedc35c41440704458ed7a60c0ac026f62.exeEXIEY.exepid process 2236 dc35c41440704458ed7a60c0ac026f62.exe 1664 dc35c41440704458ed7a60c0ac026f62.exe 896 EXIEY.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
dc35c41440704458ed7a60c0ac026f62.exedc35c41440704458ed7a60c0ac026f62.exeEXIEY.exeEXIEY.exedescription pid process target process PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 2236 wrote to memory of 1664 2236 dc35c41440704458ed7a60c0ac026f62.exe dc35c41440704458ed7a60c0ac026f62.exe PID 1664 wrote to memory of 896 1664 dc35c41440704458ed7a60c0ac026f62.exe EXIEY.exe PID 1664 wrote to memory of 896 1664 dc35c41440704458ed7a60c0ac026f62.exe EXIEY.exe PID 1664 wrote to memory of 896 1664 dc35c41440704458ed7a60c0ac026f62.exe EXIEY.exe PID 1664 wrote to memory of 896 1664 dc35c41440704458ed7a60c0ac026f62.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 896 wrote to memory of 2608 896 EXIEY.exe EXIEY.exe PID 2608 wrote to memory of 2732 2608 EXIEY.exe EXIEY.exe PID 2608 wrote to memory of 2732 2608 EXIEY.exe EXIEY.exe PID 2608 wrote to memory of 2732 2608 EXIEY.exe EXIEY.exe PID 2608 wrote to memory of 2732 2608 EXIEY.exe EXIEY.exe PID 2608 wrote to memory of 2732 2608 EXIEY.exe EXIEY.exe PID 2608 wrote to memory of 2732 2608 EXIEY.exe EXIEY.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\dc35c41440704458ed7a60c0ac026f62.exe"C:\Users\Admin\AppData\Local\Temp\dc35c41440704458ed7a60c0ac026f62.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2236 -
C:\Users\Admin\AppData\Local\Temp\dc35c41440704458ed7a60c0ac026f62.exe"C:\Users\Admin\AppData\Local\Temp\dc35c41440704458ed7a60c0ac026f62.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1664 -
C:\Users\Admin\AppData\Local\Temp\EXIEY.exe"C:\Users\Admin\AppData\Local\Temp\EXIEY.exe"3⤵
- 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:896 -
C:\Users\Admin\AppData\Local\Temp\EXIEY.exe"C:\Users\Admin\AppData\Local\Temp\EXIEY.exe"4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2608 -
C:\Users\Admin\AppData\Local\Temp\EXIEY.exe"C:\Users\Admin\AppData\Local\Temp\EXIEY.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp5⤵
- Executes dropped EXE
PID:2732
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD5753df6889fd7410a2e9fe333da83a429
SHA13c425f16e8267186061dd48ac1c77c122962456e
SHA256b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
SHA5129d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444
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Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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Filesize
320KB
MD5ccc2260269cb43ddadda9444e3d112f7
SHA1ddab46acc12d7c60a15fa363f88030f1dd539fcb
SHA2568ca1bd039407381c33fb7ab570b6e95b0ce64b0d5ef64a1968f9b55647cc1911
SHA512787d0b4f5d89b840a4917c78e46f963c8c96a96ec005b45d085222ef307c2a76f074c4a65ca033b038e1b7d1419c7cd3c5c5f3075c3ea24e546c68bdd7643fde
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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Filesize
175KB
MD5dd73cead4b93366cf3465c8cd32e2796
SHA174546226dfe9ceb8184651e920d1dbfb432b314e
SHA256a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22
SHA512ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63