Analysis
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max time kernel
134s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
25-05-2024 16:10
Static task
static1
Behavioral task
behavioral1
Sample
cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe
Resource
win10v2004-20240426-en
General
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Target
cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe
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Size
2.0MB
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MD5
5137939894b504bb63a816f49780919d
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SHA1
e6cfa193d5223e879cd99218dfcae8764d33795d
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SHA256
cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f
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SHA512
01d07389cdeb40dcdb855d89e6873c14e5d125ab69a33af0cace7bb105a9531eebb1bd8efaf1b1189cae79f846b9d4e53b20665ebf88e743571f1ee463fe916a
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SSDEEP
49152:s4K3x1vU6JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex186tIuoITsdZ
Malware Config
Extracted
stealc
Extracted
vidar
https://steamcommunity.com/profiles/76561199689717899
https://t.me/copterwin
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
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Detect Vidar Stealer 9 IoCs
Processes:
resource yara_rule behavioral1/memory/4828-2-0x0000000004070000-0x00000000041B9000-memory.dmp family_vidar_v7 behavioral1/memory/2328-8-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2328-9-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2328-4-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2328-19-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2328-20-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2328-37-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2328-38-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 behavioral1/memory/2328-39-0x0000000000400000-0x0000000000646000-memory.dmp family_vidar_v7 -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
kat3383.tmppid process 2328 kat3383.tmp -
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:
cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exedescription pid process target process PID 4828 set thread context of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp -
Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
kat3383.tmpdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat3383.tmp -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
kat3383.tmppid process 2328 kat3383.tmp 2328 kat3383.tmp -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exedescription pid process target process PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp PID 4828 wrote to memory of 2328 4828 cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe kat3383.tmp
Processes
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C:\Users\Admin\AppData\Local\Temp\cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe"C:\Users\Admin\AppData\Local\Temp\cfa92c12e3a2dc7cff90e260a02ae1bbe75f98ee9923d14e3c9e49137570b43f.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4828 -
C:\Users\Admin\AppData\Local\Temp\kat3383.tmpC:\Users\Admin\AppData\Local\Temp\kat3383.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:2328
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\kat3383.tmpFilesize
861KB
MD566064dbdb70a5eb15ebf3bf65aba254b
SHA10284fd320f99f62aca800fb1251eff4c31ec4ed7
SHA2566a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795
SHA512b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f
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memory/2328-4-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2328-8-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2328-9-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2328-19-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2328-20-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2328-22-0x00000000283F0000-0x000000002864F000-memory.dmpFilesize
2.4MB
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memory/2328-37-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2328-38-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/2328-39-0x0000000000400000-0x0000000000646000-memory.dmpFilesize
2.3MB
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memory/4828-10-0x0000000000400000-0x000000000060C000-memory.dmpFilesize
2.0MB
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memory/4828-2-0x0000000004070000-0x00000000041B9000-memory.dmpFilesize
1.3MB
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memory/4828-0-0x00000000007E0000-0x00000000007E1000-memory.dmpFilesize
4KB