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Analysis
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max time kernel
142s -
max time network
147s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
09/07/2024, 21:31
Static task
static1
Behavioral task
behavioral1
Sample
3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe
Resource
win10v2004-20240709-en
General
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Target
3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe
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Size
90KB
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MD5
2028d19fdf91b38e6c8428af41fc9bd4
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SHA1
333df9c2f10fc40c130c186d8537451ae166e8e9
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SHA256
3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb
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SHA512
023bc68a4e5928eb5ace07a8bc3935e294e649bcfe5c4c7e2b1846af9f8bbef145968480e5ee2b52c3b09c14a1210e61f75bd8b067306f9152d3b1e7cc62ea72
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SSDEEP
1536:1MIPgEm56wnbkKC2ZyBJU066lwLCRVEB+nR/y8cmNrEIviCOzuajkrDl9HNSj1:11PgEOng1d66jRVa+n4NmNNouukrD7Hg
Malware Config
Signatures
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Blocklisted process makes network request 10 IoCs
flow pid Process 4 2740 rundll32.exe 7 2740 rundll32.exe 8 2740 rundll32.exe 9 2740 rundll32.exe 10 2740 rundll32.exe 13 2740 rundll32.exe 14 2740 rundll32.exe 15 2740 rundll32.exe 17 2740 rundll32.exe 18 2740 rundll32.exe -
Deletes itself 1 IoCs
pid Process 2260 dhxuk.exe -
Executes dropped EXE 1 IoCs
pid Process 2260 dhxuk.exe -
Loads dropped DLL 3 IoCs
pid Process 2552 cmd.exe 2552 cmd.exe 2740 rundll32.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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resource yara_rule behavioral1/files/0x0009000000016cb2-13.dat upx behavioral1/memory/2740-15-0x0000000010000000-0x0000000010022000-memory.dmp upx behavioral1/memory/2740-16-0x0000000010000000-0x0000000010022000-memory.dmp upx behavioral1/memory/2740-20-0x0000000010000000-0x0000000010022000-memory.dmp upx behavioral1/memory/2740-21-0x0000000010000000-0x0000000010022000-memory.dmp upx behavioral1/memory/2740-22-0x0000000010000000-0x0000000010022000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\eqoom\\vhvxuvs.hxv\",crc32" rundll32.exe -
Enumerates connected drives 3 TTPs 23 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\b: rundll32.exe File opened (read-only) \??\t: rundll32.exe File opened (read-only) \??\x: rundll32.exe File opened (read-only) \??\r: rundll32.exe File opened (read-only) \??\u: rundll32.exe File opened (read-only) \??\e: rundll32.exe File opened (read-only) \??\h: rundll32.exe File opened (read-only) \??\i: rundll32.exe File opened (read-only) \??\l: rundll32.exe File opened (read-only) \??\n: rundll32.exe File opened (read-only) \??\o: rundll32.exe File opened (read-only) \??\w: rundll32.exe File opened (read-only) \??\z: rundll32.exe File opened (read-only) \??\a: rundll32.exe File opened (read-only) \??\g: rundll32.exe File opened (read-only) \??\m: rundll32.exe File opened (read-only) \??\p: rundll32.exe File opened (read-only) \??\q: rundll32.exe File opened (read-only) \??\v: rundll32.exe File opened (read-only) \??\j: rundll32.exe File opened (read-only) \??\k: rundll32.exe File opened (read-only) \??\s: rundll32.exe File opened (read-only) \??\y: rundll32.exe -
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PHYSICALDRIVE0 rundll32.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString rundll32.exe -
Kills process with taskkill 1 IoCs
pid Process 2828 taskkill.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2540 PING.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2740 rundll32.exe 2740 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2740 rundll32.exe Token: SeDebugPrivilege 2828 taskkill.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2280 3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe 2260 dhxuk.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 2280 wrote to memory of 2552 2280 3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe 30 PID 2280 wrote to memory of 2552 2280 3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe 30 PID 2280 wrote to memory of 2552 2280 3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe 30 PID 2280 wrote to memory of 2552 2280 3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe 30 PID 2552 wrote to memory of 2540 2552 cmd.exe 32 PID 2552 wrote to memory of 2540 2552 cmd.exe 32 PID 2552 wrote to memory of 2540 2552 cmd.exe 32 PID 2552 wrote to memory of 2540 2552 cmd.exe 32 PID 2552 wrote to memory of 2260 2552 cmd.exe 33 PID 2552 wrote to memory of 2260 2552 cmd.exe 33 PID 2552 wrote to memory of 2260 2552 cmd.exe 33 PID 2552 wrote to memory of 2260 2552 cmd.exe 33 PID 2260 wrote to memory of 2740 2260 dhxuk.exe 34 PID 2260 wrote to memory of 2740 2260 dhxuk.exe 34 PID 2260 wrote to memory of 2740 2260 dhxuk.exe 34 PID 2260 wrote to memory of 2740 2260 dhxuk.exe 34 PID 2260 wrote to memory of 2740 2260 dhxuk.exe 34 PID 2260 wrote to memory of 2740 2260 dhxuk.exe 34 PID 2260 wrote to memory of 2740 2260 dhxuk.exe 34 PID 2740 wrote to memory of 2828 2740 rundll32.exe 35 PID 2740 wrote to memory of 2828 2740 rundll32.exe 35 PID 2740 wrote to memory of 2828 2740 rundll32.exe 35 PID 2740 wrote to memory of 2828 2740 rundll32.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2280 -
C:\Windows\SysWOW64\cmd.execmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dhxuk.exe "C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2552 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 23⤵
- Runs ping.exe
PID:2540
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C:\Users\Admin\AppData\Local\Temp\dhxuk.exeC:\Users\Admin\AppData\Local\Temp\\dhxuk.exe "C:\Users\Admin\AppData\Local\Temp\3fbd7c1594fafa70c2d92ba842273a0c076ff94f97af222e03eff0f69af8d2eb.exe"3⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2260 -
\??\c:\windows\SysWOW64\rundll32.exec:\windows\system32\rundll32.exe "c:\eqoom\vhvxuvs.hxv",crc32 C:\Users\Admin\AppData\Local\Temp\dhxuk.exe4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740 -
\??\c:\windows\SysWOW64\taskkill.exetaskkill /f /im attrib.exe5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2828
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
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Filesize
57KB
MD52f53f49e01f09d6e6064871eec1955cd
SHA1a6e1a6e5c2080d0fb2f7a872e3902a8a4a1a9b5f
SHA256964e4dd2532d540bb61d3c7ccc833f2358d8cd6b2eabc3a2d51183a18b59f82d
SHA5122cb98030c3df7417c04f796f78f23f96d381871d9c7ae4a14116764e915b2e2f56b9b3a6fb76fedc50a17788de9538fc7954a7b73bf17e4be43e1fc1a06bc218
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Filesize
91KB
MD52f5c1cc5b8957fa58df80236177d0ace
SHA138d4a09cf034e837e142cdf4da2bcef21bfbc622
SHA2565bc6963cb9023468712cb663714e81967ee1c18fffcd7fe88e1d9831b71555fe
SHA5120a5363f09dd3d4afc1bb0c0ad856da870bd785734b7e5122c91f3a0b8b3ccfd1ec88a2373badfb180ce1c02bd4ad9391e206d6ce7ee3002fa618d130c6a430ef