Analysis
-
max time kernel
151s -
max time network
144s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
17-11-2020 12:15
Static task
static1
Behavioral task
behavioral1
Sample
a20873c234b2d2c5af626ff4e1f4c6c4.exe
Resource
win7v20201028
General
-
Target
a20873c234b2d2c5af626ff4e1f4c6c4.exe
-
Size
252KB
-
MD5
0a6d39443f4e9faebb2675ff08435bc7
-
SHA1
6a70c0db2a49e608b456e615cbf734d6df93a5dd
-
SHA256
dc659e2a3ae9c87215da2d9ad649553c5471987a7b4e143226a8142fb934f52d
-
SHA512
68d7271a822d2b1307bba0ab80a8eace0c56f33195bdef076bcbcac44eaaf3459b71da832cad49f1512516b862b536cce6a8c2ee50700bbba6ecc100e358ab5a
Malware Config
Extracted
darkcomet
Guest16
ximer2020.ddns.net:1604
DC_MUTEX-4U0HFC0
-
InstallPath
MSDCSC\msdcsc.exe
-
gencode
aDFqoxfKfrcR
-
install
true
-
offline_keylogger
true
-
password
82121020202222
-
persistence
true
-
reg_key
MicroUpdate
Signatures
-
Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
a20873c234b2d2c5af626ff4e1f4c6c4.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" a20873c234b2d2c5af626ff4e1f4c6c4.exe -
Executes dropped EXE 1 IoCs
Processes:
msdcsc.exepid process 1500 msdcsc.exe -
Processes:
resource yara_rule \Users\Admin\Documents\MSDCSC\msdcsc.exe upx \Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx C:\Users\Admin\Documents\MSDCSC\msdcsc.exe upx behavioral1/memory/1896-8-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral1/memory/1896-11-0x0000000000400000-0x00000000004B7000-memory.dmp upx behavioral1/memory/1896-10-0x0000000000400000-0x00000000004B7000-memory.dmp upx -
Deletes itself 1 IoCs
Processes:
notepad.exepid process 1852 notepad.exe -
Loads dropped DLL 2 IoCs
Processes:
a20873c234b2d2c5af626ff4e1f4c6c4.exepid process 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe -
Adds Run key to start application 2 TTPs 3 IoCs
Processes:
a20873c234b2d2c5af626ff4e1f4c6c4.exemsdcsc.exeiexplore.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" a20873c234b2d2c5af626ff4e1f4c6c4.exe Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" msdcsc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe" iexplore.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
msdcsc.exedescription pid process target process PID 1500 set thread context of 1896 1500 msdcsc.exe iexplore.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
iexplore.exepid process 1896 iexplore.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
a20873c234b2d2c5af626ff4e1f4c6c4.exemsdcsc.exeiexplore.exedescription pid process Token: SeIncreaseQuotaPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeSecurityPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeTakeOwnershipPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeLoadDriverPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeSystemProfilePrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeSystemtimePrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeProfSingleProcessPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeIncBasePriorityPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeCreatePagefilePrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeBackupPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeRestorePrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeShutdownPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeDebugPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeSystemEnvironmentPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeChangeNotifyPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeRemoteShutdownPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeUndockPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeManageVolumePrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeImpersonatePrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeCreateGlobalPrivilege 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: 33 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: 34 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: 35 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe Token: SeIncreaseQuotaPrivilege 1500 msdcsc.exe Token: SeSecurityPrivilege 1500 msdcsc.exe Token: SeTakeOwnershipPrivilege 1500 msdcsc.exe Token: SeLoadDriverPrivilege 1500 msdcsc.exe Token: SeSystemProfilePrivilege 1500 msdcsc.exe Token: SeSystemtimePrivilege 1500 msdcsc.exe Token: SeProfSingleProcessPrivilege 1500 msdcsc.exe Token: SeIncBasePriorityPrivilege 1500 msdcsc.exe Token: SeCreatePagefilePrivilege 1500 msdcsc.exe Token: SeBackupPrivilege 1500 msdcsc.exe Token: SeRestorePrivilege 1500 msdcsc.exe Token: SeShutdownPrivilege 1500 msdcsc.exe Token: SeDebugPrivilege 1500 msdcsc.exe Token: SeSystemEnvironmentPrivilege 1500 msdcsc.exe Token: SeChangeNotifyPrivilege 1500 msdcsc.exe Token: SeRemoteShutdownPrivilege 1500 msdcsc.exe Token: SeUndockPrivilege 1500 msdcsc.exe Token: SeManageVolumePrivilege 1500 msdcsc.exe Token: SeImpersonatePrivilege 1500 msdcsc.exe Token: SeCreateGlobalPrivilege 1500 msdcsc.exe Token: 33 1500 msdcsc.exe Token: 34 1500 msdcsc.exe Token: 35 1500 msdcsc.exe Token: SeIncreaseQuotaPrivilege 1896 iexplore.exe Token: SeSecurityPrivilege 1896 iexplore.exe Token: SeTakeOwnershipPrivilege 1896 iexplore.exe Token: SeLoadDriverPrivilege 1896 iexplore.exe Token: SeSystemProfilePrivilege 1896 iexplore.exe Token: SeSystemtimePrivilege 1896 iexplore.exe Token: SeProfSingleProcessPrivilege 1896 iexplore.exe Token: SeIncBasePriorityPrivilege 1896 iexplore.exe Token: SeCreatePagefilePrivilege 1896 iexplore.exe Token: SeBackupPrivilege 1896 iexplore.exe Token: SeRestorePrivilege 1896 iexplore.exe Token: SeShutdownPrivilege 1896 iexplore.exe Token: SeDebugPrivilege 1896 iexplore.exe Token: SeSystemEnvironmentPrivilege 1896 iexplore.exe Token: SeChangeNotifyPrivilege 1896 iexplore.exe Token: SeRemoteShutdownPrivilege 1896 iexplore.exe Token: SeUndockPrivilege 1896 iexplore.exe Token: SeManageVolumePrivilege 1896 iexplore.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
iexplore.exepid process 1896 iexplore.exe -
Suspicious use of WriteProcessMemory 51 IoCs
Processes:
a20873c234b2d2c5af626ff4e1f4c6c4.exemsdcsc.exeiexplore.exedescription pid process target process PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1852 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe notepad.exe PID 1588 wrote to memory of 1500 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe msdcsc.exe PID 1588 wrote to memory of 1500 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe msdcsc.exe PID 1588 wrote to memory of 1500 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe msdcsc.exe PID 1588 wrote to memory of 1500 1588 a20873c234b2d2c5af626ff4e1f4c6c4.exe msdcsc.exe PID 1500 wrote to memory of 1896 1500 msdcsc.exe iexplore.exe PID 1500 wrote to memory of 1896 1500 msdcsc.exe iexplore.exe PID 1500 wrote to memory of 1896 1500 msdcsc.exe iexplore.exe PID 1500 wrote to memory of 1896 1500 msdcsc.exe iexplore.exe PID 1500 wrote to memory of 1896 1500 msdcsc.exe iexplore.exe PID 1500 wrote to memory of 1896 1500 msdcsc.exe iexplore.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe PID 1896 wrote to memory of 2036 1896 iexplore.exe notepad.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\a20873c234b2d2c5af626ff4e1f4c6c4.exe"C:\Users\Admin\AppData\Local\Temp\a20873c234b2d2c5af626ff4e1f4c6c4.exe"1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\notepad.exenotepad2⤵
- Deletes itself
-
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\Internet Explorer\iexplore.exe"C:\Program Files (x86)\Internet Explorer\iexplore.exe"3⤵
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\notepad.exenotepad4⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\Documents\MSDCSC\msdcsc.exeMD5
0a6d39443f4e9faebb2675ff08435bc7
SHA16a70c0db2a49e608b456e615cbf734d6df93a5dd
SHA256dc659e2a3ae9c87215da2d9ad649553c5471987a7b4e143226a8142fb934f52d
SHA51268d7271a822d2b1307bba0ab80a8eace0c56f33195bdef076bcbcac44eaaf3459b71da832cad49f1512516b862b536cce6a8c2ee50700bbba6ecc100e358ab5a
-
C:\Users\Admin\Documents\MSDCSC\msdcsc.exeMD5
0a6d39443f4e9faebb2675ff08435bc7
SHA16a70c0db2a49e608b456e615cbf734d6df93a5dd
SHA256dc659e2a3ae9c87215da2d9ad649553c5471987a7b4e143226a8142fb934f52d
SHA51268d7271a822d2b1307bba0ab80a8eace0c56f33195bdef076bcbcac44eaaf3459b71da832cad49f1512516b862b536cce6a8c2ee50700bbba6ecc100e358ab5a
-
\Users\Admin\Documents\MSDCSC\msdcsc.exeMD5
0a6d39443f4e9faebb2675ff08435bc7
SHA16a70c0db2a49e608b456e615cbf734d6df93a5dd
SHA256dc659e2a3ae9c87215da2d9ad649553c5471987a7b4e143226a8142fb934f52d
SHA51268d7271a822d2b1307bba0ab80a8eace0c56f33195bdef076bcbcac44eaaf3459b71da832cad49f1512516b862b536cce6a8c2ee50700bbba6ecc100e358ab5a
-
\Users\Admin\Documents\MSDCSC\msdcsc.exeMD5
0a6d39443f4e9faebb2675ff08435bc7
SHA16a70c0db2a49e608b456e615cbf734d6df93a5dd
SHA256dc659e2a3ae9c87215da2d9ad649553c5471987a7b4e143226a8142fb934f52d
SHA51268d7271a822d2b1307bba0ab80a8eace0c56f33195bdef076bcbcac44eaaf3459b71da832cad49f1512516b862b536cce6a8c2ee50700bbba6ecc100e358ab5a
-
memory/1500-5-0x0000000000000000-mapping.dmp
-
memory/1852-0-0x0000000000000000-mapping.dmp
-
memory/1852-2-0x0000000000000000-mapping.dmp
-
memory/1852-1-0x0000000000200000-0x0000000000201000-memory.dmpFilesize
4KB
-
memory/1896-9-0x00000000004B5820-mapping.dmp
-
memory/1896-8-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
-
memory/1896-11-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
-
memory/1896-10-0x0000000000400000-0x00000000004B7000-memory.dmpFilesize
732KB
-
memory/2036-14-0x0000000000000000-mapping.dmp
-
memory/2036-13-0x0000000000250000-0x0000000000251000-memory.dmpFilesize
4KB
-
memory/2036-12-0x0000000000000000-mapping.dmp