darkcomet | e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985

Analysis

max time kernel
149s
max time network
119s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
30-05-2024 09:35

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General

Target

e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Size

252KB
MD5

0fa267d2d604169d3abee4c73aa40b3d
SHA1

8aa8ac449c230c0a95748ee0a9fdbe523fae5c02
SHA256

e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985
SHA512

31bb94c1874baa86b6f3801bdf9077a52dd56e9ed4b9f1b74bac74ad8c52ae4915f4611fb17686e281f610791c73dec285b84c81f1a1bb935a7c21332ba07bd2
SSDEEP

6144:TcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQK3:TcWkbgTYWnYnt/IDYhPn

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:889

Mutex

DC_MUTEX-L2AZZ2B

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
o5X0ZUXE5GPx
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\\Documents\\MSDCSC\\msdcsc.exe"	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4"	msdcsc.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

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
2572	attrib.exe
2608	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2664	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe

UPX packed file 15 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/3000-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/files/0x0037000000015c9b-5.dat	upx
behavioral1/memory/2664-14-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3000-11-0x00000000042F0000-0x00000000043A7000-memory.dmp	upx
behavioral1/memory/3000-55-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-56-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-57-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-58-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-59-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-60-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-61-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-62-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2664-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.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-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.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
2664	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSecurityPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeTakeOwnershipPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeLoadDriverPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSystemProfilePrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSystemtimePrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeProfSingleProcessPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeIncBasePriorityPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeCreatePagefilePrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeBackupPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeRestorePrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeShutdownPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeDebugPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeSystemEnvironmentPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeChangeNotifyPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeRemoteShutdownPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeUndockPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeManageVolumePrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeImpersonatePrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeCreateGlobalPrivilege	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: 33	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: 34	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: 35	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
Token: SeIncreaseQuotaPrivilege	2664	msdcsc.exe
Token: SeSecurityPrivilege	2664	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2664	msdcsc.exe
Token: SeLoadDriverPrivilege	2664	msdcsc.exe
Token: SeSystemProfilePrivilege	2664	msdcsc.exe
Token: SeSystemtimePrivilege	2664	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2664	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2664	msdcsc.exe
Token: SeCreatePagefilePrivilege	2664	msdcsc.exe
Token: SeBackupPrivilege	2664	msdcsc.exe
Token: SeRestorePrivilege	2664	msdcsc.exe
Token: SeShutdownPrivilege	2664	msdcsc.exe
Token: SeDebugPrivilege	2664	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2664	msdcsc.exe
Token: SeChangeNotifyPrivilege	2664	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2664	msdcsc.exe
Token: SeUndockPrivilege	2664	msdcsc.exe
Token: SeManageVolumePrivilege	2664	msdcsc.exe
Token: SeImpersonatePrivilege	2664	msdcsc.exe
Token: SeCreateGlobalPrivilege	2664	msdcsc.exe
Token: 33	2664	msdcsc.exe
Token: 34	2664	msdcsc.exe
Token: 35	2664	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2664	msdcsc.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 3000 wrote to memory of 2968	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	28
PID 3000 wrote to memory of 2968	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	28
PID 3000 wrote to memory of 2968	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	28
PID 3000 wrote to memory of 2968	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	28
PID 3000 wrote to memory of 2644	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	29
PID 3000 wrote to memory of 2644	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	29
PID 3000 wrote to memory of 2644	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	29
PID 3000 wrote to memory of 2644	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	29
PID 2968 wrote to memory of 2572	2968	cmd.exe	32
PID 2968 wrote to memory of 2572	2968	cmd.exe	32
PID 2968 wrote to memory of 2572	2968	cmd.exe	32
PID 2968 wrote to memory of 2572	2968	cmd.exe	32
PID 2644 wrote to memory of 2608	2644	cmd.exe	33
PID 2644 wrote to memory of 2608	2644	cmd.exe	33
PID 2644 wrote to memory of 2608	2644	cmd.exe	33
PID 2644 wrote to memory of 2608	2644	cmd.exe	33
PID 3000 wrote to memory of 2664	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	34
PID 3000 wrote to memory of 2664	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	34
PID 3000 wrote to memory of 2664	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	34
PID 3000 wrote to memory of 2664	3000	e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe	34
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35
PID 2664 wrote to memory of 2340	2664	msdcsc.exe	35

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2572	attrib.exe
2608	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe
"C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2968
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2572
- 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:2644
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2608
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Windows security modification
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:2664
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:2340

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
252KB

MD5
0fa267d2d604169d3abee4c73aa40b3d

SHA1
8aa8ac449c230c0a95748ee0a9fdbe523fae5c02

SHA256
e876355ab68a62fac30be2454a7ecbb23eae3cba09107df79d211245d0769985

SHA512
31bb94c1874baa86b6f3801bdf9077a52dd56e9ed4b9f1b74bac74ad8c52ae4915f4611fb17686e281f610791c73dec285b84c81f1a1bb935a7c21332ba07bd2

Download Submit
memory/2340-54-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/2340-16-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2664-14-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-61-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-56-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-57-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-58-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-59-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2664-60-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3000-12-0x00000000042F0000-0x00000000043A7000-memory.dmp

Filesize
732KB

Download
memory/3000-55-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3000-11-0x00000000042F0000-0x00000000043A7000-memory.dmp

Filesize
732KB

Download
memory/3000-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3000-1-0x0000000000370000-0x0000000000371000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads