darkcomet | 26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422

General

Target

26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
Size

559KB
MD5

38e231e0d35c22835aa17d526fe32150
SHA1

dda6917b40f8ad09266fbad549c0e2368d8c34c0
SHA256

26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422
SHA512

8c915daa82f13f386c749ce965159a4d8fe24197764ae571a215ed449084fdce373c229424cf30b898dfa6761253d4a670186c79b7742c7d1ebee41fbc0aea61
SSDEEP

12288:x+xOrozCCYaCphtIYJb6lzOqPpFOblme0pLLsbii9cWDeO7HtoNmKzoST:COEzCFaCpAYJbwzOqPUlvOsmi9c8SlR

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

mcsft.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate mcsft.exe
Executes dropped EXE 2 IoCs

Processes:

mcsft.exemcsft.exe

pid process

3052 mcsft.exe
2744 mcsft.exe

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

pid	process
3052	mcsft.exe
2744	mcsft.exe

Loads dropped DLL 6 IoCs

Processes:

26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exemcsft.exe

pid	process
2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
3052	mcsft.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoft = "C:\\Users\\Admin\\AppData\\Roaming\\mcsft.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

mcsft.exe

description pid process target process

PID 3052 set thread context of 2744 3052 mcsft.exe mcsft.exe

description	pid	process	target process
PID 3052 set thread context of 2744	3052	mcsft.exe	mcsft.exe

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2344-0-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\mcsft.exe	upx
behavioral1/memory/3052-45-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2344-44-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2744-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/3052-55-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2744-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-72-0x0000000000400000-0x00000000004B5000-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 5 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

Processes:

reg.exemcsft.exemcsft.exe26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcsft.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

mcsft.exe

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
T1012

System Information Discovery
T1082

Processes:

mcsft.exe

description ioc process

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

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

Suspicious use of AdjustPrivilegeToken 23 IoCs

Processes:

mcsft.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2744	mcsft.exe
Token: SeSecurityPrivilege	2744	mcsft.exe
Token: SeTakeOwnershipPrivilege	2744	mcsft.exe
Token: SeLoadDriverPrivilege	2744	mcsft.exe
Token: SeSystemProfilePrivilege	2744	mcsft.exe
Token: SeSystemtimePrivilege	2744	mcsft.exe
Token: SeProfSingleProcessPrivilege	2744	mcsft.exe
Token: SeIncBasePriorityPrivilege	2744	mcsft.exe
Token: SeCreatePagefilePrivilege	2744	mcsft.exe
Token: SeBackupPrivilege	2744	mcsft.exe
Token: SeRestorePrivilege	2744	mcsft.exe
Token: SeShutdownPrivilege	2744	mcsft.exe
Token: SeDebugPrivilege	2744	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2744	mcsft.exe
Token: SeChangeNotifyPrivilege	2744	mcsft.exe
Token: SeRemoteShutdownPrivilege	2744	mcsft.exe
Token: SeUndockPrivilege	2744	mcsft.exe
Token: SeManageVolumePrivilege	2744	mcsft.exe
Token: SeImpersonatePrivilege	2744	mcsft.exe
Token: SeCreateGlobalPrivilege	2744	mcsft.exe
Token: 33	2744	mcsft.exe
Token: 34	2744	mcsft.exe
Token: 35	2744	mcsft.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exemcsft.exemcsft.exe

pid process

2344 26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
3052 mcsft.exe
2744 mcsft.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.execmd.exemcsft.exe

description	pid	process	target process
PID 2344 wrote to memory of 2952	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	cmd.exe
PID 2344 wrote to memory of 2952	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	cmd.exe
PID 2344 wrote to memory of 2952	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	cmd.exe
PID 2344 wrote to memory of 2952	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	cmd.exe
PID 2952 wrote to memory of 2992	2952	cmd.exe	reg.exe
PID 2952 wrote to memory of 2992	2952	cmd.exe	reg.exe
PID 2952 wrote to memory of 2992	2952	cmd.exe	reg.exe
PID 2952 wrote to memory of 2992	2952	cmd.exe	reg.exe
PID 2344 wrote to memory of 3052	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	mcsft.exe
PID 2344 wrote to memory of 3052	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	mcsft.exe
PID 2344 wrote to memory of 3052	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	mcsft.exe
PID 2344 wrote to memory of 3052	2344	26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe
PID 3052 wrote to memory of 2744	3052	mcsft.exe	mcsft.exe

C:\Users\Admin\AppData\Local\Temp\26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe
"C:\Users\Admin\AppData\Local\Temp\26790a40a15ed51294738eadfc0ba540d109cadd195ea7d12c56b4fd6ef50422N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\CiQvw.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2952
- - 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
    - System Location Discovery: System Language Discovery
    PID:2992
- C:\Users\Admin\AppData\Roaming\mcsft.exe
  "C:\Users\Admin\AppData\Roaming\mcsft.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\CiQvw.bat

Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

Download Submit
C:\Users\Admin\AppData\Roaming\mcsft.exe

Filesize
559KB

MD5
9b718c657659201feadef03acba5650f

SHA1
f2693a23d78f45386ad35395a4f7499af1d609f9

SHA256
3103b0efc4661e6058968edebcc85f9287bdd1b8a4333cfc7c18a39daace82c0

SHA512
1ce1e2d643207793b9fd0bc5f977de7e0b624762fd1255f45097df492459a4a75b1fad9e9676d152e2f2e06564501f3769a013e58eff9065f6e85d450aaea382

Download Submit
memory/2344-0-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2344-63-0x0000000003150000-0x0000000003518000-memory.dmp

Filesize
3.8MB

Download
memory/2344-44-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2744-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-54-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-51-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2744-66-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/3052-45-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/3052-50-0x0000000002C10000-0x0000000002FD8000-memory.dmp

Filesize
3.8MB

Download
memory/3052-55-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads