darkcomet | bc8da42f92d2a29fd7e3a9b8dc1ef9c39fadeca1580de5aa539c341d5f68ec25

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	mcsft.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe

Executes dropped EXE 2 IoCs

pid	Process
1924	mcsft.exe
2168	mcsft.exe

UPX packed file 16 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2168-31-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-34-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-35-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-36-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-37-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-41-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-39-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-38-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-40-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-42-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-44-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2168-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mcrosoft = "C:\\Users\\Admin\\AppData\\Roaming\\mcsft.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1924 set thread context of 2168	1924	mcsft.exe	90

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	mcsft.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	mcsft.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	mcsft.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2168	mcsft.exe
Token: SeSecurityPrivilege	2168	mcsft.exe
Token: SeTakeOwnershipPrivilege	2168	mcsft.exe
Token: SeLoadDriverPrivilege	2168	mcsft.exe
Token: SeSystemProfilePrivilege	2168	mcsft.exe
Token: SeSystemtimePrivilege	2168	mcsft.exe
Token: SeProfSingleProcessPrivilege	2168	mcsft.exe
Token: SeIncBasePriorityPrivilege	2168	mcsft.exe
Token: SeCreatePagefilePrivilege	2168	mcsft.exe
Token: SeBackupPrivilege	2168	mcsft.exe
Token: SeRestorePrivilege	2168	mcsft.exe
Token: SeShutdownPrivilege	2168	mcsft.exe
Token: SeDebugPrivilege	2168	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2168	mcsft.exe
Token: SeChangeNotifyPrivilege	2168	mcsft.exe
Token: SeRemoteShutdownPrivilege	2168	mcsft.exe
Token: SeUndockPrivilege	2168	mcsft.exe
Token: SeManageVolumePrivilege	2168	mcsft.exe
Token: SeImpersonatePrivilege	2168	mcsft.exe
Token: SeCreateGlobalPrivilege	2168	mcsft.exe
Token: 33	2168	mcsft.exe
Token: 34	2168	mcsft.exe
Token: 35	2168	mcsft.exe
Token: 36	2168	mcsft.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1836	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe
1924	mcsft.exe
2168	mcsft.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1836 wrote to memory of 5096	1836	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe	84
PID 1836 wrote to memory of 5096	1836	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe	84
PID 1836 wrote to memory of 5096	1836	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe	84
PID 5096 wrote to memory of 5028	5096	cmd.exe	88
PID 5096 wrote to memory of 5028	5096	cmd.exe	88
PID 5096 wrote to memory of 5028	5096	cmd.exe	88
PID 1836 wrote to memory of 1924	1836	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe	89
PID 1836 wrote to memory of 1924	1836	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe	89
PID 1836 wrote to memory of 1924	1836	710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe	89
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90
PID 1924 wrote to memory of 2168	1924	mcsft.exe	90

C:\Users\Admin\AppData\Local\Temp\710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe
"C:\Users\Admin\AppData\Local\Temp\710df045be4b3c20897855d6d18322e0_NeikiAnalytics.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\suyqZ.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5096
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\mcsft.exe" /f
    3⤵
    - Adds Run key to start application
    PID:5028
- C:\Users\Admin\AppData\Roaming\mcsft.exe
  "C:\Users\Admin\AppData\Roaming\mcsft.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2168

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

4

System Information Discovery

5