darkcomet | ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4

Analysis

max time kernel
120s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 18:10

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General

Target

ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Size

658KB
MD5

d31a4bdd7b7c68f1f64e0f04e5d364f0
SHA1

40d702ff3cebd2a3bdab06fc907be09d34261b15
SHA256

ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4
SHA512

77279820d73c29c8ba387630487e4c9f09856c9ded4ff61368d437b68a76b4dc5a801f3dea1b46042b11480d2619d8f4356e3db30ae71184def2d2ecb855b7bc
SSDEEP

12288:e9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hx:qZ1xuVVjfFoynPaVBUR8f+kN10EBv

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

anonymousreal.no-ip.biz:200

Mutex

DC_MUTEX-S8ETPZZ

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
kVvg3ArjwPxT
install
true
offline_keylogger
true
persistence
true
reg_key
rundll32

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
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"	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.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
2208	attrib.exe
2692	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2704	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeSecurityPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeTakeOwnershipPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeLoadDriverPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeSystemProfilePrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeSystemtimePrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeProfSingleProcessPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeIncBasePriorityPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeCreatePagefilePrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeBackupPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeRestorePrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeShutdownPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeDebugPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeSystemEnvironmentPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeChangeNotifyPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeRemoteShutdownPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeUndockPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeManageVolumePrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeImpersonatePrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeCreateGlobalPrivilege	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: 33	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: 34	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: 35	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
Token: SeIncreaseQuotaPrivilege	2704	msdcsc.exe
Token: SeSecurityPrivilege	2704	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2704	msdcsc.exe
Token: SeLoadDriverPrivilege	2704	msdcsc.exe
Token: SeSystemProfilePrivilege	2704	msdcsc.exe
Token: SeSystemtimePrivilege	2704	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2704	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2704	msdcsc.exe
Token: SeCreatePagefilePrivilege	2704	msdcsc.exe
Token: SeBackupPrivilege	2704	msdcsc.exe
Token: SeRestorePrivilege	2704	msdcsc.exe
Token: SeShutdownPrivilege	2704	msdcsc.exe
Token: SeDebugPrivilege	2704	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2704	msdcsc.exe
Token: SeChangeNotifyPrivilege	2704	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2704	msdcsc.exe
Token: SeUndockPrivilege	2704	msdcsc.exe
Token: SeManageVolumePrivilege	2704	msdcsc.exe
Token: SeImpersonatePrivilege	2704	msdcsc.exe
Token: SeCreateGlobalPrivilege	2704	msdcsc.exe
Token: 33	2704	msdcsc.exe
Token: 34	2704	msdcsc.exe
Token: 35	2704	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2704	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 3064	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	30
PID 2400 wrote to memory of 3064	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	30
PID 2400 wrote to memory of 3064	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	30
PID 2400 wrote to memory of 3064	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	30
PID 2400 wrote to memory of 1100	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	31
PID 2400 wrote to memory of 1100	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	31
PID 2400 wrote to memory of 1100	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	31
PID 2400 wrote to memory of 1100	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	31
PID 3064 wrote to memory of 2208	3064	cmd.exe	34
PID 3064 wrote to memory of 2208	3064	cmd.exe	34
PID 3064 wrote to memory of 2208	3064	cmd.exe	34
PID 3064 wrote to memory of 2208	3064	cmd.exe	34
PID 1100 wrote to memory of 2692	1100	cmd.exe	35
PID 1100 wrote to memory of 2692	1100	cmd.exe	35
PID 1100 wrote to memory of 2692	1100	cmd.exe	35
PID 1100 wrote to memory of 2692	1100	cmd.exe	35
PID 2400 wrote to memory of 2704	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	36
PID 2400 wrote to memory of 2704	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	36
PID 2400 wrote to memory of 2704	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	36
PID 2400 wrote to memory of 2704	2400	ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe	36
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37
PID 2704 wrote to memory of 2820	2704	msdcsc.exe	37

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2208	attrib.exe
2692	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe
"C:\Users\Admin\AppData\Local\Temp\ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3064
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4N.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1100
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2692
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2820

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
658KB

MD5
d31a4bdd7b7c68f1f64e0f04e5d364f0

SHA1
40d702ff3cebd2a3bdab06fc907be09d34261b15

SHA256
ecde9dcd0af7dfaf2f9c9cd6e64bacfed2f7f205b939e6fe6266ecac3212f5e4

SHA512
77279820d73c29c8ba387630487e4c9f09856c9ded4ff61368d437b68a76b4dc5a801f3dea1b46042b11480d2619d8f4356e3db30ae71184def2d2ecb855b7bc

Download Submit
memory/2400-51-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2400-0-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/2704-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-53-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-54-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-57-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-58-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-59-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-60-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2704-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2820-50-0x0000000000210000-0x0000000000211000-memory.dmp

Filesize
4KB

Download
memory/2820-12-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads