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Analysis
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max time kernel
100s -
max time network
104s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
28/11/2022, 17:32
Static task
static1
Behavioral task
behavioral1
Sample
a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe
Resource
win10v2004-20220812-en
General
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Target
a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe
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Size
1005KB
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MD5
2d7e8e8cdeeaca9f5027dee94d7c1d5d
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SHA1
676ce435617ad00f570feaef0074c30d0526ba4b
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SHA256
a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68
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SHA512
54ffa24395e8dd73dd0bb448c15b53ad465254ab694a924919d2aab297381ed39d1a01da77d1192c90e0816b4e80abc5d445966a1efa5f75bbfcb6cd8677d93b
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SSDEEP
24576:YgWEXtey6BxhWU5951duuNACzX/QmLTt2Dp49JRxkHOh:/WWoBHx51dBNAit2N49Nk
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 6 IoCs
resource yara_rule behavioral1/memory/1368-60-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral1/memory/1368-62-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral1/memory/1368-63-0x0000000000401180-mapping.dmp family_isrstealer behavioral1/memory/1368-74-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral1/memory/1368-79-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral1/memory/1368-87-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral1/memory/268-85-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral1/memory/268-86-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 2 IoCs
resource yara_rule behavioral1/memory/268-85-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral1/memory/268-86-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
resource yara_rule behavioral1/memory/1692-68-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/1692-72-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/1692-73-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/1692-75-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/1692-76-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/268-80-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/268-84-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/268-85-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/268-86-0x0000000000400000-0x000000000041F000-memory.dmp upx -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 2036 set thread context of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 1368 set thread context of 1692 1368 vbc.exe 29 PID 1368 set thread context of 268 1368 vbc.exe 32 -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1368 vbc.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 2036 wrote to memory of 1368 2036 a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe 28 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 1692 1368 vbc.exe 29 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32 PID 1368 wrote to memory of 268 1368 vbc.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe"C:\Users\Admin\AppData\Local\Temp\a98b92e0f48f383d15b39290e98069fb13ec3bc52451cbc927b6988e99126f68.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1368 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe/scomma "C:\Users\Admin\AppData\Local\Temp\qwTnnqelYn.ini"3⤵PID:1692
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe/scomma "C:\Users\Admin\AppData\Local\Temp\dSkb6qUumD.ini"3⤵
- Accesses Microsoft Outlook accounts
PID:268
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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