Analysis
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max time kernel
122s -
max time network
124s -
platform
windows7_x64 -
resource
win7-en-20211014 -
submitted
24-10-2021 00:05
Static task
static1
Behavioral task
behavioral1
Sample
FoxMod.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
FoxMod.exe
Resource
win10-en-20210920
General
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Target
FoxMod.exe
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Size
167KB
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MD5
bd1acb871aedede6c07f0e21f149851a
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SHA1
37ab454591228a86261ebf617dc760f124d8581d
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SHA256
0ac33d8c3cbc892f96da5a1fcbd912f21aa77c464fea12d57651494404831225
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SHA512
07890b9eb3ef6b89c306348607aab9f78ae529a0581cb737324f4daaee22cfa58146385414679f9c977ef19ca75e35138ef7a733861a586049ac40090d9b4be6
Malware Config
Signatures
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine Payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/576-60-0x0000000000400000-0x0000000000420000-memory.dmp family_redline behavioral1/memory/576-61-0x0000000000400000-0x0000000000420000-memory.dmp family_redline behavioral1/memory/576-62-0x0000000000400000-0x0000000000420000-memory.dmp family_redline behavioral1/memory/576-63-0x000000000041A19E-mapping.dmp family_redline behavioral1/memory/576-65-0x0000000000400000-0x0000000000420000-memory.dmp family_redline -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
fl.exepid process 1344 fl.exe -
Loads dropped DLL 2 IoCs
Processes:
RegAsm.exepid process 576 RegAsm.exe 576 RegAsm.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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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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Suspicious use of SetThreadContext 1 IoCs
Processes:
FoxMod.exedescription pid process target process PID 1140 set thread context of 576 1140 FoxMod.exe RegAsm.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
RegAsm.exepid process 576 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
RegAsm.exefl.exedescription pid process Token: SeDebugPrivilege 576 RegAsm.exe Token: SeDebugPrivilege 1344 fl.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
FoxMod.exeRegAsm.exedescription pid process target process PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 1140 wrote to memory of 576 1140 FoxMod.exe RegAsm.exe PID 576 wrote to memory of 1344 576 RegAsm.exe fl.exe PID 576 wrote to memory of 1344 576 RegAsm.exe fl.exe PID 576 wrote to memory of 1344 576 RegAsm.exe fl.exe PID 576 wrote to memory of 1344 576 RegAsm.exe fl.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\FoxMod.exe"C:\Users\Admin\AppData\Local\Temp\FoxMod.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe#cmd2⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\fl.exe"C:\Users\Admin\AppData\Local\Temp\fl.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\fl.exeMD5
bfeeb414fba5fb951e96f0e6c24785f0
SHA1f1518514fb4398cc988f90b0239404653aa989ac
SHA2565b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8
SHA51279f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e
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C:\Users\Admin\AppData\Local\Temp\fl.exeMD5
bfeeb414fba5fb951e96f0e6c24785f0
SHA1f1518514fb4398cc988f90b0239404653aa989ac
SHA2565b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8
SHA51279f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e
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\Users\Admin\AppData\Local\Temp\fl.exeMD5
bfeeb414fba5fb951e96f0e6c24785f0
SHA1f1518514fb4398cc988f90b0239404653aa989ac
SHA2565b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8
SHA51279f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e
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\Users\Admin\AppData\Local\Temp\fl.exeMD5
bfeeb414fba5fb951e96f0e6c24785f0
SHA1f1518514fb4398cc988f90b0239404653aa989ac
SHA2565b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8
SHA51279f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e
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memory/576-61-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/576-62-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/576-63-0x000000000041A19E-mapping.dmp
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memory/576-64-0x0000000075191000-0x0000000075193000-memory.dmpFilesize
8KB
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memory/576-65-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/576-67-0x0000000000430000-0x0000000000431000-memory.dmpFilesize
4KB
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memory/576-60-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/576-59-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/576-58-0x0000000000400000-0x0000000000420000-memory.dmpFilesize
128KB
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memory/1140-57-0x000000001B3E0000-0x000000001B3E2000-memory.dmpFilesize
8KB
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memory/1140-55-0x0000000000A30000-0x0000000000A31000-memory.dmpFilesize
4KB
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memory/1344-70-0x0000000000000000-mapping.dmp
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memory/1344-73-0x00000000008C0000-0x00000000008C1000-memory.dmpFilesize
4KB
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memory/1344-75-0x000000001C5B0000-0x000000001C8F4000-memory.dmpFilesize
3.3MB
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memory/1344-76-0x000000001BF60000-0x000000001BF62000-memory.dmpFilesize
8KB
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memory/1344-77-0x000000001BF66000-0x000000001BF85000-memory.dmpFilesize
124KB
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memory/1344-78-0x000000001C1B0000-0x000000001C4E7000-memory.dmpFilesize
3.2MB
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memory/1344-79-0x000000001F5F0000-0x000000001F859000-memory.dmpFilesize
2.4MB
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memory/1344-80-0x000000001BF85000-0x000000001BF86000-memory.dmpFilesize
4KB