darkcomet | 98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46f

General

Target

98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
Size

559KB
MD5

aa94785e80b031c008cd48a2ec031700
SHA1

3d112a45f1ed4545389316fa46bab4aae713f741
SHA256

98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46f
SHA512

14a1b393d29a0f05014d200084c4742c627a23ebe2bbdea804f57382672f4cf1b2202c9c5421dae0860d5492dd5b860e28440ad930117626271b08ee98cdea6c
SSDEEP

12288:x+xOrozCCYaCphtIYJb6lzOqPpFOblme0pLLsbii9cWDeO7HtoNmKzoSd:COEzCFaCpAYJbwzOqPUlvOsmi9c8SlH

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

2180 mcsft.exe
2864 mcsft.exe

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

pid	process
2180	mcsft.exe
2864	mcsft.exe

Loads dropped DLL 6 IoCs

Processes:

98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exemcsft.exe

pid	process
2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
2180	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-1-5-21-1846800975-3917212583-2893086201-1000\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 2180 set thread context of 2864 2180 mcsft.exe mcsft.exe

description	pid	process	target process
PID 2180 set thread context of 2864	2180	mcsft.exe	mcsft.exe

UPX packed file 21 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\mcsft.exe	upx
behavioral1/memory/2180-46-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2108-48-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2864-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2180-59-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2864-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-76-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2864-78-0x0000000000400000-0x00000000004B5000-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:

cmd.exereg.exemcsft.exemcsft.exe98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
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	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.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 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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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	2864	mcsft.exe
Token: SeSecurityPrivilege	2864	mcsft.exe
Token: SeTakeOwnershipPrivilege	2864	mcsft.exe
Token: SeLoadDriverPrivilege	2864	mcsft.exe
Token: SeSystemProfilePrivilege	2864	mcsft.exe
Token: SeSystemtimePrivilege	2864	mcsft.exe
Token: SeProfSingleProcessPrivilege	2864	mcsft.exe
Token: SeIncBasePriorityPrivilege	2864	mcsft.exe
Token: SeCreatePagefilePrivilege	2864	mcsft.exe
Token: SeBackupPrivilege	2864	mcsft.exe
Token: SeRestorePrivilege	2864	mcsft.exe
Token: SeShutdownPrivilege	2864	mcsft.exe
Token: SeDebugPrivilege	2864	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2864	mcsft.exe
Token: SeChangeNotifyPrivilege	2864	mcsft.exe
Token: SeRemoteShutdownPrivilege	2864	mcsft.exe
Token: SeUndockPrivilege	2864	mcsft.exe
Token: SeManageVolumePrivilege	2864	mcsft.exe
Token: SeImpersonatePrivilege	2864	mcsft.exe
Token: SeCreateGlobalPrivilege	2864	mcsft.exe
Token: 33	2864	mcsft.exe
Token: 34	2864	mcsft.exe
Token: 35	2864	mcsft.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exemcsft.exemcsft.exe

pid process

2108 98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
2180 mcsft.exe
2864 mcsft.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.execmd.exemcsft.exe

description	pid	process	target process
PID 2108 wrote to memory of 2420	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	cmd.exe
PID 2108 wrote to memory of 2420	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	cmd.exe
PID 2108 wrote to memory of 2420	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	cmd.exe
PID 2108 wrote to memory of 2420	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	cmd.exe
PID 2420 wrote to memory of 2820	2420	cmd.exe	reg.exe
PID 2420 wrote to memory of 2820	2420	cmd.exe	reg.exe
PID 2420 wrote to memory of 2820	2420	cmd.exe	reg.exe
PID 2420 wrote to memory of 2820	2420	cmd.exe	reg.exe
PID 2108 wrote to memory of 2180	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	mcsft.exe
PID 2108 wrote to memory of 2180	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	mcsft.exe
PID 2108 wrote to memory of 2180	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	mcsft.exe
PID 2108 wrote to memory of 2180	2108	98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe
PID 2180 wrote to memory of 2864	2180	mcsft.exe	mcsft.exe

C:\Users\Admin\AppData\Local\Temp\98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe
"C:\Users\Admin\AppData\Local\Temp\98eea43fdcd2e6ca209c33f5ede4d38ec4fbe9e03134fa5d6e2e35138cddd46fN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\ToCRi.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2420
- - 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:2820
- 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:2180
- - 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:2864

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

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Downloads

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

Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

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

Filesize
559KB

MD5
e2f1cc8556b48f4d24f0acfd81ccb333

SHA1
52d4377cb65334360e5bb862f98080d59e0ba28a

SHA256
d5ef964a79372107c72fec6cb397ae22281cf856561781a94f8341e166d082eb

SHA512
88d644a4271d1e326798959c721046e4e9e772c4b9c111e432229075137b72f739d97c2f968107496821ac3032f875bb0aa94bb802128a738694fe1569121756

Download Submit
memory/2108-0-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2108-44-0x00000000038B0000-0x0000000003C78000-memory.dmp

Filesize
3.8MB

Download
memory/2108-43-0x00000000038B0000-0x0000000003C78000-memory.dmp

Filesize
3.8MB

Download
memory/2108-48-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2108-42-0x00000000038B0000-0x0000000003C78000-memory.dmp

Filesize
3.8MB

Download
memory/2180-46-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2180-53-0x00000000029A0000-0x0000000002D68000-memory.dmp

Filesize
3.8MB

Download
memory/2180-59-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2864-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-65-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-54-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-66-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-76-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2864-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads