Analysis
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max time kernel
132s -
max time network
110s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
08-05-2021 13:06
Static task
static1
Behavioral task
behavioral1
Sample
cvhost.exe
Resource
win7v20210408
General
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Target
cvhost.exe
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Size
6.1MB
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MD5
ca3a564e2dbaa4c15296d982286f9e19
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SHA1
e1aaabaf8e2e0e1709b82bcc9427b36465da2ce1
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SHA256
41b87704118429cf10614b868b6a0ebc3f3d85d2b154ee83101f01661636b4ee
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SHA512
29ab853dc5304ff69e48e65f8babe3858147a7d81035aba9a2aa2e12ae49ff7fea070ea45d8554e05fd4a9ccd72816e5605f7c42faa5810d113ddd7d2af0b1e0
Malware Config
Extracted
danabot
1827
3
192.210.198.12:443
192.236.147.83:443
184.95.51.175:443
184.95.51.183:443
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embedded_hash
AEF96B4D339B580ABB737F203C2D0F52
Signatures
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Blocklisted process makes network request 4 IoCs
Processes:
RUNDLL32.EXEflow pid process 10 644 RUNDLL32.EXE 17 644 RUNDLL32.EXE 18 644 RUNDLL32.EXE 19 644 RUNDLL32.EXE -
Deletes itself 1 IoCs
Processes:
rundll32.exepid process 2240 rundll32.exe -
Loads dropped DLL 2 IoCs
Processes:
rundll32.exeRUNDLL32.EXEpid process 2240 rundll32.exe 644 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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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 AdjustPrivilegeToken 2 IoCs
Processes:
rundll32.exeRUNDLL32.EXEdescription pid process Token: SeDebugPrivilege 2240 rundll32.exe Token: SeDebugPrivilege 644 RUNDLL32.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
cvhost.exerundll32.exedescription pid process target process PID 488 wrote to memory of 2240 488 cvhost.exe rundll32.exe PID 488 wrote to memory of 2240 488 cvhost.exe rundll32.exe PID 488 wrote to memory of 2240 488 cvhost.exe rundll32.exe PID 2240 wrote to memory of 644 2240 rundll32.exe RUNDLL32.EXE PID 2240 wrote to memory of 644 2240 rundll32.exe RUNDLL32.EXE PID 2240 wrote to memory of 644 2240 rundll32.exe RUNDLL32.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\cvhost.exe"C:\Users\Admin\AppData\Local\Temp\cvhost.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\system32\rundll32.exe C:\Users\Admin\AppData\Local\Temp\CVHOST~1.DLL,Z C:\Users\Admin\AppData\Local\Temp\cvhost.exe2⤵
- Deletes itself
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\RUNDLL32.EXEC:\Windows\system32\RUNDLL32.EXE C:\Users\Admin\AppData\Local\Temp\CVHOST~1.DLL,slNfZI0=3⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\CVHOST~1.DLLMD5
5b307ca1c9b7f71bb1a03d1c44692812
SHA1eff329a067a4c568779aa420c44471e1f79dce3b
SHA256beac9d6fefce24dd78c00fb20bba4b9f06840161d9ed4fb7bc3cac19640c2175
SHA512b695237385e4024e290c8d346eb707326a977ea2ad1daf8d689b8ff7227d1aa9ad566fdbee9b6820c982f86141ce157bb203f0f25e692162fba49bde3c1c2d7a
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\Users\Admin\AppData\Local\Temp\CVHOST~1.DLLMD5
5b307ca1c9b7f71bb1a03d1c44692812
SHA1eff329a067a4c568779aa420c44471e1f79dce3b
SHA256beac9d6fefce24dd78c00fb20bba4b9f06840161d9ed4fb7bc3cac19640c2175
SHA512b695237385e4024e290c8d346eb707326a977ea2ad1daf8d689b8ff7227d1aa9ad566fdbee9b6820c982f86141ce157bb203f0f25e692162fba49bde3c1c2d7a
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\Users\Admin\AppData\Local\Temp\CVHOST~1.DLLMD5
5b307ca1c9b7f71bb1a03d1c44692812
SHA1eff329a067a4c568779aa420c44471e1f79dce3b
SHA256beac9d6fefce24dd78c00fb20bba4b9f06840161d9ed4fb7bc3cac19640c2175
SHA512b695237385e4024e290c8d346eb707326a977ea2ad1daf8d689b8ff7227d1aa9ad566fdbee9b6820c982f86141ce157bb203f0f25e692162fba49bde3c1c2d7a
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memory/488-114-0x00000000066F0000-0x0000000006DF7000-memory.dmpFilesize
7.0MB
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memory/488-115-0x0000000000400000-0x00000000043E0000-memory.dmpFilesize
63.9MB
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memory/488-116-0x0000000005FE0000-0x0000000005FE1000-memory.dmpFilesize
4KB
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memory/644-122-0x0000000000000000-mapping.dmp
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memory/644-126-0x0000000004F51000-0x00000000055AF000-memory.dmpFilesize
6.4MB
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memory/2240-117-0x0000000000000000-mapping.dmp
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memory/2240-124-0x0000000004FA1000-0x00000000055FF000-memory.dmpFilesize
6.4MB
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memory/2240-128-0x0000000002FC0000-0x0000000002FC1000-memory.dmpFilesize
4KB