Analysis
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max time kernel
43s -
max time network
44s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
16-04-2021 20:30
Behavioral task
behavioral1
Sample
Sirus.exe
Resource
win10v20210410
Behavioral task
behavioral2
Sample
Sirus.exe
Resource
win10v20210408
General
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Target
Sirus.exe
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Size
1.7MB
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MD5
d3752c9e4466ffa7dcf4b5a065e9c274
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SHA1
997d4d61d1691862f8aab10b94c9d654f2a65e3e
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SHA256
f6598f853f981a4bcb58922d3584833086de09b9a7a6f368ca56cda7677f8126
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SHA512
de0a9708836266b2ac06077ace01bc0d8cac53d94efcdf14e337f0bd29b7f985cf03465a5c6d7df1a8e2065a69bcb33f7f3aa0845a26be67e6a66852ef1a9f23
Malware Config
Extracted
raccoon
1a329a10c40d1d7de968ac01620072546be15062
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url4cnc
https://tttttt.me/jrrand0mer
Signatures
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Executes dropped EXE 1 IoCs
Processes:
N5po9kWjuR.exepid process 1220 N5po9kWjuR.exe -
Loads dropped DLL 6 IoCs
Processes:
Sirus.exepid process 3384 Sirus.exe 3384 Sirus.exe 3384 Sirus.exe 3384 Sirus.exe 3384 Sirus.exe 3384 Sirus.exe -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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:
Sirus.exedescription pid process target process PID 3176 set thread context of 3384 3176 Sirus.exe Sirus.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of WriteProcessMemory 12 IoCs
Processes:
Sirus.exeSirus.exedescription pid process target process PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3176 wrote to memory of 3384 3176 Sirus.exe Sirus.exe PID 3384 wrote to memory of 1220 3384 Sirus.exe N5po9kWjuR.exe PID 3384 wrote to memory of 1220 3384 Sirus.exe N5po9kWjuR.exe PID 3384 wrote to memory of 1220 3384 Sirus.exe N5po9kWjuR.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Sirus.exe"C:\Users\Admin\AppData\Local\Temp\Sirus.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Sirus.exe"{path}"2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\N5po9kWjuR.exe"C:\Users\Admin\AppData\Local\Temp\N5po9kWjuR.exe"3⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\N5po9kWjuR.exeMD5
6ae21549fb8869f8da1acec258c48e0b
SHA1aed533b121fbbb481e598bc3e73cb90556db55f3
SHA25680fff049a91ba68ca61e228c88dd80d16e416ab54fd66c87c5c5ea2e85d44b58
SHA512abd624fb7181436abe539166e4030a6982f3c572bb341105fb237787e7485c5a9e7a289e58b9e2346f37eeeadcb4f82fb816d2aa3a5b4a97082238279d198136
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C:\Users\Admin\AppData\Local\Temp\N5po9kWjuR.exeMD5
6ae21549fb8869f8da1acec258c48e0b
SHA1aed533b121fbbb481e598bc3e73cb90556db55f3
SHA25680fff049a91ba68ca61e228c88dd80d16e416ab54fd66c87c5c5ea2e85d44b58
SHA512abd624fb7181436abe539166e4030a6982f3c572bb341105fb237787e7485c5a9e7a289e58b9e2346f37eeeadcb4f82fb816d2aa3a5b4a97082238279d198136
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\Users\Admin\AppData\LocalLow\gC9tT2iQ3s\freebl3.dllMD5
60acd24430204ad2dc7f148b8cfe9bdc
SHA1989f377b9117d7cb21cbe92a4117f88f9c7693d9
SHA2569876c53134dbbec4dcca67581f53638eba3fea3a15491aa3cf2526b71032da97
SHA512626c36e9567f57fa8ec9c36d96cbadede9c6f6734a7305ecfb9f798952bbacdfa33a1b6c4999ba5b78897dc2ec6f91870f7ec25b2ceacbaee4be942fe881db01
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\Users\Admin\AppData\LocalLow\gC9tT2iQ3s\freebl3.dllMD5
60acd24430204ad2dc7f148b8cfe9bdc
SHA1989f377b9117d7cb21cbe92a4117f88f9c7693d9
SHA2569876c53134dbbec4dcca67581f53638eba3fea3a15491aa3cf2526b71032da97
SHA512626c36e9567f57fa8ec9c36d96cbadede9c6f6734a7305ecfb9f798952bbacdfa33a1b6c4999ba5b78897dc2ec6f91870f7ec25b2ceacbaee4be942fe881db01
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\Users\Admin\AppData\LocalLow\gC9tT2iQ3s\mozglue.dllMD5
eae9273f8cdcf9321c6c37c244773139
SHA18378e2a2f3635574c106eea8419b5eb00b8489b0
SHA256a0c6630d4012ae0311ff40f4f06911bcf1a23f7a4762ce219b8dffa012d188cc
SHA51206e43e484a89cea9ba9b9519828d38e7c64b040f44cdaeb321cbda574e7551b11fea139ce3538f387a0a39a3d8c4cba7f4cf03e4a3c98db85f8121c2212a9097
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\Users\Admin\AppData\LocalLow\gC9tT2iQ3s\nss3.dllMD5
02cc7b8ee30056d5912de54f1bdfc219
SHA1a6923da95705fb81e368ae48f93d28522ef552fb
SHA2561989526553fd1e1e49b0fea8036822ca062d3d39c4cab4a37846173d0f1753d5
SHA5120d5dfcf4fb19b27246fa799e339d67cd1b494427783f379267fb2d10d615ffb734711bab2c515062c078f990a44a36f2d15859b1dacd4143dcc35b5c0cee0ef5
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\Users\Admin\AppData\LocalLow\gC9tT2iQ3s\softokn3.dllMD5
4e8df049f3459fa94ab6ad387f3561ac
SHA106ed392bc29ad9d5fc05ee254c2625fd65925114
SHA25625a4dae37120426ab060ebb39b7030b3e7c1093cc34b0877f223b6843b651871
SHA5123dd4a86f83465989b2b30c240a7307edd1b92d5c1d5c57d47eff287dc9daa7bace157017908d82e00be90f08ff5badb68019ffc9d881440229dcea5038f61cd6
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\Users\Admin\AppData\LocalLow\sqlite3.dllMD5
f964811b68f9f1487c2b41e1aef576ce
SHA1b423959793f14b1416bc3b7051bed58a1034025f
SHA25683bc57dcf282264f2b00c21ce0339eac20fcb7401f7c5472c0cd0c014844e5f7
SHA512565b1a7291c6fcb63205907fcd9e72fc2e11ca945afc4468c378edba882e2f314c2ac21a7263880ff7d4b84c2a1678024c1ac9971ac1c1de2bfa4248ec0f98c4
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memory/1220-141-0x00000000072F0000-0x00000000077EE000-memory.dmpFilesize
5.0MB
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memory/1220-136-0x00000000004C0000-0x00000000004C1000-memory.dmpFilesize
4KB
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memory/1220-133-0x0000000000000000-mapping.dmp
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memory/3176-120-0x0000000006E00000-0x0000000006E01000-memory.dmpFilesize
4KB
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memory/3176-123-0x000000000B180000-0x000000000B211000-memory.dmpFilesize
580KB
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memory/3176-122-0x0000000008AE0000-0x0000000008B90000-memory.dmpFilesize
704KB
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memory/3176-121-0x0000000005640000-0x0000000005645000-memory.dmpFilesize
20KB
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memory/3176-114-0x0000000000660000-0x0000000000661000-memory.dmpFilesize
4KB
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memory/3176-119-0x0000000005260000-0x000000000575E000-memory.dmpFilesize
5.0MB
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memory/3176-118-0x0000000002C20000-0x0000000002C21000-memory.dmpFilesize
4KB
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memory/3176-117-0x00000000050D0000-0x00000000050D1000-memory.dmpFilesize
4KB
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memory/3176-116-0x0000000005760000-0x0000000005761000-memory.dmpFilesize
4KB
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memory/3384-126-0x0000000000400000-0x0000000000492000-memory.dmpFilesize
584KB
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memory/3384-125-0x000000000043DC5B-mapping.dmp
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memory/3384-124-0x0000000000400000-0x0000000000492000-memory.dmpFilesize
584KB