darkcomet | 23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264

Analysis

max time kernel
119s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06/11/2024, 10:17

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General

Target
23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Size 252KB
Sample241106-mbd13syfpm
SHA256 23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264
MD5 3e2d8dc667ca1f54e598579a058cae50
SHA1 7ba1170587bd92871fe5d231f84eb299bd028048
SHA512 3399b1696380b13a0797d52df7aef51c03e92cba9fb4b12477fa9a5b69adbf258e5d7609369282f36af4e7ccd1a4a2ee96ebfbcb198565bc8afebbbbad64db52
SSDEEP 6144:lcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQ:lcWkbgTYWnYnt/IDYhP
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

zadrot077.ddns.net:1604
192.168.1.105:1604

Mutex

DC_MUTEX-XAPUZP1

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
7Tp31A087dlB
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
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"	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.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
2424	attrib.exe
396	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe

Executes dropped EXE 1 IoCs

pid	Process
4904	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/544-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x000a000000023b7b-6.dat	upx
behavioral2/memory/4904-14-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/544-17-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4904-18-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4904-22-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4904-24-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4904-26-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4904-28-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4904-30-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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	msdcsc.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeSecurityPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeTakeOwnershipPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeLoadDriverPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeSystemProfilePrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeSystemtimePrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeProfSingleProcessPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeIncBasePriorityPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeCreatePagefilePrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeBackupPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeRestorePrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeShutdownPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeDebugPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeSystemEnvironmentPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeChangeNotifyPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeRemoteShutdownPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeUndockPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeManageVolumePrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeImpersonatePrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeCreateGlobalPrivilege	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: 33	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: 34	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: 35	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: 36	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
Token: SeIncreaseQuotaPrivilege	4904	msdcsc.exe
Token: SeSecurityPrivilege	4904	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4904	msdcsc.exe
Token: SeLoadDriverPrivilege	4904	msdcsc.exe
Token: SeSystemProfilePrivilege	4904	msdcsc.exe
Token: SeSystemtimePrivilege	4904	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4904	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4904	msdcsc.exe
Token: SeCreatePagefilePrivilege	4904	msdcsc.exe
Token: SeBackupPrivilege	4904	msdcsc.exe
Token: SeRestorePrivilege	4904	msdcsc.exe
Token: SeShutdownPrivilege	4904	msdcsc.exe
Token: SeDebugPrivilege	4904	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4904	msdcsc.exe
Token: SeChangeNotifyPrivilege	4904	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4904	msdcsc.exe
Token: SeUndockPrivilege	4904	msdcsc.exe
Token: SeManageVolumePrivilege	4904	msdcsc.exe
Token: SeImpersonatePrivilege	4904	msdcsc.exe
Token: SeCreateGlobalPrivilege	4904	msdcsc.exe
Token: 33	4904	msdcsc.exe
Token: 34	4904	msdcsc.exe
Token: 35	4904	msdcsc.exe
Token: 36	4904	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4904	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 544 wrote to memory of 3792	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	84
PID 544 wrote to memory of 3792	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	84
PID 544 wrote to memory of 3792	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	84
PID 544 wrote to memory of 1796	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	86
PID 544 wrote to memory of 1796	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	86
PID 544 wrote to memory of 1796	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	86
PID 544 wrote to memory of 4904	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	88
PID 544 wrote to memory of 4904	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	88
PID 544 wrote to memory of 4904	544	23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe	88
PID 1796 wrote to memory of 2424	1796	cmd.exe	89
PID 1796 wrote to memory of 2424	1796	cmd.exe	89
PID 1796 wrote to memory of 2424	1796	cmd.exe	89
PID 3792 wrote to memory of 396	3792	cmd.exe	91
PID 3792 wrote to memory of 396	3792	cmd.exe	91
PID 3792 wrote to memory of 396	3792	cmd.exe	91
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90
PID 4904 wrote to memory of 3880	4904	msdcsc.exe	90

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2424	attrib.exe
396	attrib.exe

C:\Users\Admin\AppData\Local\Temp\23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe
"C:\Users\Admin\AppData\Local\Temp\23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3792
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264N.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:396
- 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:1796
- - 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:2424
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4904
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3880

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

Query Registry

T1012

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

msdcsc.exe

Path C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
Size 252KB
SHA256 23e1ceefaa80c5e560dcfe6dc5f9e02f508a8bf7364c349b716711539c210264
MD5 3e2d8dc667ca1f54e598579a058cae50
SHA1 7ba1170587bd92871fe5d231f84eb299bd028048
SHA512 3399b1696380b13a0797d52df7aef51c03e92cba9fb4b12477fa9a5b69adbf258e5d7609369282f36af4e7ccd1a4a2ee96ebfbcb198565bc8afebbbbad64db52
SSDEEP 6144:lcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQ:lcWkbgTYWnYnt/IDYhP
MD5 SHA1 SHA512 SSDEEP

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memory/544-1-0x0000000000B20000-0x0000000000B21000-memory.dmp

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memory/544-0-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/544-17-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/3880-16-0x0000000000D40000-0x0000000000D41000-memory.dmp

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memory/4904-14-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4904-15-0x0000000000770000-0x0000000000771000-memory.dmp

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memory/4904-18-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4904-19-0x0000000000770000-0x0000000000771000-memory.dmp

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memory/4904-22-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4904-24-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4904-26-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4904-28-0x0000000000400000-0x00000000004B7000-memory.dmp

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memory/4904-30-0x0000000000400000-0x00000000004B7000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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