Analysis
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max time kernel
299s -
max time network
299s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
19-04-2021 05:24
Static task
static1
Behavioral task
behavioral1
Sample
Sirus.exe
Resource
win10v20210408
Behavioral task
behavioral2
Sample
Sirus.exe
Resource
win10v20210410
General
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Target
Sirus.exe
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Size
1.6MB
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MD5
bc56db19b52ed6319e02a3aff17e8ccb
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SHA1
ef9cd9d631d5d8f384b22debdf520d6f9b06e1ff
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SHA256
a0edc967ba879922c1ed23b608445e025aa7ef48291146c4a963a6d5546c8f6c
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SHA512
dc05f4351a00e55db70154d0650a8fdddd63aa5cd8741645ad5b3397bbdc67f10cef521d9a8a2f7a2c64dd80a048a7e0a484982e1bfcdc7c360ba771cbe03017
Malware Config
Extracted
raccoon
1a329a10c40d1d7de968ac01620072546be15062
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url4cnc
https://tttttt.me/jrrand0mer
Signatures
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Executes dropped EXE 2 IoCs
Processes:
GoXN0tfqkP.exeGoXN0tfqkP.exepid process 4044 GoXN0tfqkP.exe 1688 GoXN0tfqkP.exe -
Loads dropped DLL 6 IoCs
Processes:
Sirus.exepid process 1192 Sirus.exe 1192 Sirus.exe 1192 Sirus.exe 1192 Sirus.exe 1192 Sirus.exe 1192 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 2 IoCs
Processes:
Sirus.exeGoXN0tfqkP.exedescription pid process target process PID 3984 set thread context of 1192 3984 Sirus.exe Sirus.exe PID 4044 set thread context of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.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 2 IoCs
Processes:
Sirus.exepid process 3984 Sirus.exe 3984 Sirus.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Sirus.exeGoXN0tfqkP.exedescription pid process Token: SeDebugPrivilege 3984 Sirus.exe Token: SeDebugPrivilege 1688 GoXN0tfqkP.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
Sirus.exeSirus.exeGoXN0tfqkP.exedescription pid process target process PID 3984 wrote to memory of 1228 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1228 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1228 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 3984 wrote to memory of 1192 3984 Sirus.exe Sirus.exe PID 1192 wrote to memory of 4044 1192 Sirus.exe GoXN0tfqkP.exe PID 1192 wrote to memory of 4044 1192 Sirus.exe GoXN0tfqkP.exe PID 1192 wrote to memory of 4044 1192 Sirus.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.exe PID 4044 wrote to memory of 1688 4044 GoXN0tfqkP.exe GoXN0tfqkP.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Sirus.exe"{path}"2⤵
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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\GoXN0tfqkP.exe"C:\Users\Admin\AppData\Local\Temp\GoXN0tfqkP.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\GoXN0tfqkP.exe"{path}"4⤵
- 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\Microsoft\CLR_v4.0_32\UsageLogs\GoXN0tfqkP.exe.logMD5
0c2899d7c6746f42d5bbe088c777f94c
SHA1622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1
SHA2565b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458
SHA512ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078
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C:\Users\Admin\AppData\Local\Temp\GoXN0tfqkP.exeMD5
6ae21549fb8869f8da1acec258c48e0b
SHA1aed533b121fbbb481e598bc3e73cb90556db55f3
SHA25680fff049a91ba68ca61e228c88dd80d16e416ab54fd66c87c5c5ea2e85d44b58
SHA512abd624fb7181436abe539166e4030a6982f3c572bb341105fb237787e7485c5a9e7a289e58b9e2346f37eeeadcb4f82fb816d2aa3a5b4a97082238279d198136
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C:\Users\Admin\AppData\Local\Temp\GoXN0tfqkP.exeMD5
6ae21549fb8869f8da1acec258c48e0b
SHA1aed533b121fbbb481e598bc3e73cb90556db55f3
SHA25680fff049a91ba68ca61e228c88dd80d16e416ab54fd66c87c5c5ea2e85d44b58
SHA512abd624fb7181436abe539166e4030a6982f3c572bb341105fb237787e7485c5a9e7a289e58b9e2346f37eeeadcb4f82fb816d2aa3a5b4a97082238279d198136
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C:\Users\Admin\AppData\Local\Temp\GoXN0tfqkP.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/1192-125-0x0000000000400000-0x0000000000492000-memory.dmpFilesize
584KB
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memory/1192-126-0x000000000043DC5B-mapping.dmp
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memory/1192-127-0x0000000000400000-0x0000000000492000-memory.dmpFilesize
584KB
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memory/1688-147-0x0000000000400000-0x000000000041C000-memory.dmpFilesize
112KB
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memory/1688-148-0x000000000041654A-mapping.dmp
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memory/1688-153-0x00000000056B0000-0x00000000056B1000-memory.dmpFilesize
4KB
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memory/1688-154-0x0000000005160000-0x0000000005161000-memory.dmpFilesize
4KB
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memory/1688-155-0x00000000051C0000-0x00000000051C1000-memory.dmpFilesize
4KB
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memory/1688-156-0x0000000005200000-0x0000000005201000-memory.dmpFilesize
4KB
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memory/1688-157-0x0000000005470000-0x0000000005471000-memory.dmpFilesize
4KB
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memory/1688-158-0x00000000050A0000-0x00000000056A6000-memory.dmpFilesize
6.0MB
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memory/3984-118-0x0000000005120000-0x0000000005121000-memory.dmpFilesize
4KB
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memory/3984-119-0x00000000050C0000-0x00000000050C1000-memory.dmpFilesize
4KB
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memory/3984-124-0x0000000009B30000-0x0000000009BF0000-memory.dmpFilesize
768KB
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memory/3984-120-0x0000000004FD0000-0x0000000004FD1000-memory.dmpFilesize
4KB
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memory/3984-121-0x00000000055C0000-0x00000000055C5000-memory.dmpFilesize
20KB
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memory/3984-122-0x0000000008890000-0x0000000008891000-memory.dmpFilesize
4KB
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memory/3984-114-0x00000000006D0000-0x00000000006D1000-memory.dmpFilesize
4KB
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memory/3984-117-0x0000000005170000-0x0000000005171000-memory.dmpFilesize
4KB
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memory/3984-116-0x00000000055D0000-0x00000000055D1000-memory.dmpFilesize
4KB
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memory/3984-123-0x0000000009E30000-0x0000000009F1A000-memory.dmpFilesize
936KB
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memory/4044-134-0x0000000000000000-mapping.dmp
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memory/4044-146-0x000000000F380000-0x000000000F3C2000-memory.dmpFilesize
264KB
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memory/4044-145-0x0000000004A30000-0x0000000004ABF000-memory.dmpFilesize
572KB
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memory/4044-144-0x0000000007500000-0x00000000079FE000-memory.dmpFilesize
5.0MB
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memory/4044-137-0x00000000006D0000-0x00000000006D1000-memory.dmpFilesize
4KB