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Analysis
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max time kernel
136s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
24/11/2022, 11:39
Static task
static1
Behavioral task
behavioral1
Sample
dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe
Resource
win10v2004-20220812-en
General
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Target
dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe
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Size
1015KB
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MD5
eeaad0018cda28981b2459b48280f8ee
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SHA1
12b7929a92a899c4f89ba036875838fc31bcb120
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SHA256
dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5
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SHA512
b925a80136d32fcd48b995da701c51c8d2acc26470b5ea0822826eb6cbaa43d6a33a6ec1bfeafc14f655b7c8631acb1b59b3acb8525b240daedf19447a67e0d3
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SSDEEP
12288:uaWzgMg7v3qnCiMErQohh0F4CCJ8lny/Qg8r69oGE15jSsFZyoopBWCD+z:ZaHMv6Corjqny/QgSsoRNFZyo5C2
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 behavioral2/memory/2652-133-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/2652-143-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/2652-145-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral2/memory/2652-152-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/4384-150-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral2/memory/4384-151-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 2 IoCs
resource yara_rule behavioral2/memory/4384-150-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral2/memory/4384-151-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
resource yara_rule behavioral2/memory/4412-138-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4412-140-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4412-141-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4412-142-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral2/memory/4384-147-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/4384-149-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/4384-150-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral2/memory/4384-151-0x0000000000400000-0x000000000041F000-memory.dmp upx -
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-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4892 set thread context of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 2652 set thread context of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 set thread context of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe -
Suspicious use of SendNotifyMessage 4 IoCs
pid Process 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 4892 wrote to memory of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 4892 wrote to memory of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 4892 wrote to memory of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 4892 wrote to memory of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 4892 wrote to memory of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 4892 wrote to memory of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 4892 wrote to memory of 2652 4892 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 79 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4412 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 80 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83 PID 2652 wrote to memory of 4384 2652 dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe"C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4892 -
C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe"C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2652 -
C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe/scomma "C:\Users\Admin\AppData\Local\Temp\5LnDIzHofc.ini"3⤵PID:4412
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C:\Users\Admin\AppData\Local\Temp\dec3a084d5781efaece6ac3a4bfc9ecbf42f76e92602b618ecd50b1886b035d5.exe/scomma "C:\Users\Admin\AppData\Local\Temp\SXzWPhdNjN.ini"3⤵
- Accesses Microsoft Outlook accounts
PID:4384
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
5B
MD5d1ea279fb5559c020a1b4137dc4de237
SHA1db6f8988af46b56216a6f0daf95ab8c9bdb57400
SHA256fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba
SHA512720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3