darkcomet | e270f2c865490cdfd709732746bb109a17c3869fc7332b453d8fcb723d739140

Analysis

max time kernel
164s
max time network
146s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
13-10-2023 01:11

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Size

658KB
MD5

cea317bf984e8642317f2ea6700f0f40
SHA1

b1e4a6444e78df514e7f9907b4dea4b84483d6a0
SHA256

e270f2c865490cdfd709732746bb109a17c3869fc7332b453d8fcb723d739140
SHA512

101e3a26832a3231e0bd1fe747aa41f6f329fea5f77eba19507def0de21802de3663208d54e7ead59d0e51cc0412372245521b181f525216a0593b242055971b
SSDEEP

12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hI:KZ1xuVVjfFoynPaVBUR8f+kN10EBC

Score

10^/10

darkcomet guest16 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:200

Mutex

DC_MUTEX-2FTZLRG

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
VK2SGSf1AiHA
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	cea317bf984e8642317f2ea6700f0f40exe_JC.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2768	attrib.exe
2764	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2500	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-607259312-1573743425-2763420908-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	cea317bf984e8642317f2ea6700f0f40exe_JC.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2500	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeSecurityPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeTakeOwnershipPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeLoadDriverPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeSystemProfilePrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeSystemtimePrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeProfSingleProcessPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeIncBasePriorityPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeCreatePagefilePrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeBackupPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeRestorePrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeShutdownPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeDebugPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeSystemEnvironmentPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeChangeNotifyPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeRemoteShutdownPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeUndockPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeManageVolumePrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeImpersonatePrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeCreateGlobalPrivilege	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: 33	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: 34	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: 35	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe
Token: SeIncreaseQuotaPrivilege	2500	msdcsc.exe
Token: SeSecurityPrivilege	2500	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2500	msdcsc.exe
Token: SeLoadDriverPrivilege	2500	msdcsc.exe
Token: SeSystemProfilePrivilege	2500	msdcsc.exe
Token: SeSystemtimePrivilege	2500	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2500	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2500	msdcsc.exe
Token: SeCreatePagefilePrivilege	2500	msdcsc.exe
Token: SeBackupPrivilege	2500	msdcsc.exe
Token: SeRestorePrivilege	2500	msdcsc.exe
Token: SeShutdownPrivilege	2500	msdcsc.exe
Token: SeDebugPrivilege	2500	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2500	msdcsc.exe
Token: SeChangeNotifyPrivilege	2500	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2500	msdcsc.exe
Token: SeUndockPrivilege	2500	msdcsc.exe
Token: SeManageVolumePrivilege	2500	msdcsc.exe
Token: SeImpersonatePrivilege	2500	msdcsc.exe
Token: SeCreateGlobalPrivilege	2500	msdcsc.exe
Token: 33	2500	msdcsc.exe
Token: 34	2500	msdcsc.exe
Token: 35	2500	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2500	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 2708	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	28
PID 1364 wrote to memory of 2708	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	28
PID 1364 wrote to memory of 2708	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	28
PID 1364 wrote to memory of 2708	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	28
PID 1364 wrote to memory of 2792	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	30
PID 1364 wrote to memory of 2792	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	30
PID 1364 wrote to memory of 2792	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	30
PID 1364 wrote to memory of 2792	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	30
PID 2792 wrote to memory of 2768	2792	cmd.exe	33
PID 2792 wrote to memory of 2768	2792	cmd.exe	33
PID 2792 wrote to memory of 2768	2792	cmd.exe	33
PID 2792 wrote to memory of 2768	2792	cmd.exe	33
PID 2708 wrote to memory of 2764	2708	cmd.exe	32
PID 2708 wrote to memory of 2764	2708	cmd.exe	32
PID 2708 wrote to memory of 2764	2708	cmd.exe	32
PID 2708 wrote to memory of 2764	2708	cmd.exe	32
PID 1364 wrote to memory of 2500	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	36
PID 1364 wrote to memory of 2500	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	36
PID 1364 wrote to memory of 2500	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	36
PID 1364 wrote to memory of 2500	1364	cea317bf984e8642317f2ea6700f0f40exe_JC.exe	36
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37
PID 2500 wrote to memory of 2984	2500	msdcsc.exe	37

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2764	attrib.exe
2768	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cea317bf984e8642317f2ea6700f0f40exe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\cea317bf984e8642317f2ea6700f0f40exe_JC.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\cea317bf984e8642317f2ea6700f0f40exe_JC.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\cea317bf984e8642317f2ea6700f0f40exe_JC.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2768
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2500
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
cea317bf984e8642317f2ea6700f0f40

SHA1
b1e4a6444e78df514e7f9907b4dea4b84483d6a0

SHA256
e270f2c865490cdfd709732746bb109a17c3869fc7332b453d8fcb723d739140

SHA512
101e3a26832a3231e0bd1fe747aa41f6f329fea5f77eba19507def0de21802de3663208d54e7ead59d0e51cc0412372245521b181f525216a0593b242055971b

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
cea317bf984e8642317f2ea6700f0f40

SHA1
b1e4a6444e78df514e7f9907b4dea4b84483d6a0

SHA256
e270f2c865490cdfd709732746bb109a17c3869fc7332b453d8fcb723d739140

SHA512
101e3a26832a3231e0bd1fe747aa41f6f329fea5f77eba19507def0de21802de3663208d54e7ead59d0e51cc0412372245521b181f525216a0593b242055971b

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
cea317bf984e8642317f2ea6700f0f40

SHA1
b1e4a6444e78df514e7f9907b4dea4b84483d6a0

SHA256
e270f2c865490cdfd709732746bb109a17c3869fc7332b453d8fcb723d739140

SHA512
101e3a26832a3231e0bd1fe747aa41f6f329fea5f77eba19507def0de21802de3663208d54e7ead59d0e51cc0412372245521b181f525216a0593b242055971b

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
cea317bf984e8642317f2ea6700f0f40

SHA1
b1e4a6444e78df514e7f9907b4dea4b84483d6a0

SHA256
e270f2c865490cdfd709732746bb109a17c3869fc7332b453d8fcb723d739140

SHA512
101e3a26832a3231e0bd1fe747aa41f6f329fea5f77eba19507def0de21802de3663208d54e7ead59d0e51cc0412372245521b181f525216a0593b242055971b

Download Submit
\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
658KB

MD5
cea317bf984e8642317f2ea6700f0f40

SHA1
b1e4a6444e78df514e7f9907b4dea4b84483d6a0

SHA256
e270f2c865490cdfd709732746bb109a17c3869fc7332b453d8fcb723d739140

SHA512
101e3a26832a3231e0bd1fe747aa41f6f329fea5f77eba19507def0de21802de3663208d54e7ead59d0e51cc0412372245521b181f525216a0593b242055971b

Download Submit
memory/1364-43-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1364-0-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2500-44-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2500-11-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2500-45-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-46-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-47-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-48-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-49-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-50-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-53-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2500-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2984-42-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2984-13-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads