darkcomet | 2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a

General

Target

2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
Size

576KB
MD5

c6d93ca21e9d07f7afee7a0d1e2a6ed5
SHA1

7971d487e1cd227f61cc1ca2e5b93430ef4ccc09
SHA256

2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a
SHA512

24f3953fd998d1da00275d044854882c9a5772757e79f2f577a191f855d90b7437c0ba3de9e4265bb99e7bd8aecdb65fabcb092a8eafc0b68006724b3f0e1553
SSDEEP

12288:+NWPkHlUkErBuxQ4uzi6d6dL/yiXLzeMdK6io8levy0FhVlpzkzDDoSY:+NWPkHlUfBgpuPdWzyuDTifgyWlp

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

UPX dump on OEP (original entry point) 30 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2924-0-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
C:\Users\Admin\AppData\Roaming\mcsft.exe	UPX
behavioral1/memory/2684-46-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral1/memory/2924-44-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral1/memory/2544-57-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-56-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2684-55-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral1/memory/2544-58-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-59-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-54-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-63-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-62-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-61-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-60-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-51-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-64-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-66-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-67-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-68-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-69-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-70-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-71-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-72-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-73-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-74-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-75-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-76-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-77-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-78-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2544-79-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX

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

2684 mcsft.exe
2544 mcsft.exe

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

pid	process
2684	mcsft.exe
2544	mcsft.exe

Loads dropped DLL 6 IoCs

Processes:

2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exemcsft.exe

pid	process
2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
2684	mcsft.exe

UPX packed file 31 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2924-0-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\mcsft.exe	upx
behavioral1/memory/2684-46-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2924-45-0x0000000003940000-0x0000000003D08000-memory.dmp	upx
behavioral1/memory/2924-44-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2544-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2684-55-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2544-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-76-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-79-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\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 2684 set thread context of 2544 2684 mcsft.exe mcsft.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 2684 set thread context of 2544	2684	mcsft.exe	mcsft.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	2544	mcsft.exe
Token: SeSecurityPrivilege	2544	mcsft.exe
Token: SeTakeOwnershipPrivilege	2544	mcsft.exe
Token: SeLoadDriverPrivilege	2544	mcsft.exe
Token: SeSystemProfilePrivilege	2544	mcsft.exe
Token: SeSystemtimePrivilege	2544	mcsft.exe
Token: SeProfSingleProcessPrivilege	2544	mcsft.exe
Token: SeIncBasePriorityPrivilege	2544	mcsft.exe
Token: SeCreatePagefilePrivilege	2544	mcsft.exe
Token: SeBackupPrivilege	2544	mcsft.exe
Token: SeRestorePrivilege	2544	mcsft.exe
Token: SeShutdownPrivilege	2544	mcsft.exe
Token: SeDebugPrivilege	2544	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2544	mcsft.exe
Token: SeChangeNotifyPrivilege	2544	mcsft.exe
Token: SeRemoteShutdownPrivilege	2544	mcsft.exe
Token: SeUndockPrivilege	2544	mcsft.exe
Token: SeManageVolumePrivilege	2544	mcsft.exe
Token: SeImpersonatePrivilege	2544	mcsft.exe
Token: SeCreateGlobalPrivilege	2544	mcsft.exe
Token: 33	2544	mcsft.exe
Token: 34	2544	mcsft.exe
Token: 35	2544	mcsft.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exemcsft.exemcsft.exe

pid process

2924 2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
2684 mcsft.exe
2544 mcsft.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.execmd.exemcsft.exe

description	pid	process	target process
PID 2924 wrote to memory of 2876	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	cmd.exe
PID 2924 wrote to memory of 2876	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	cmd.exe
PID 2924 wrote to memory of 2876	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	cmd.exe
PID 2924 wrote to memory of 2876	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	cmd.exe
PID 2876 wrote to memory of 2568	2876	cmd.exe	reg.exe
PID 2876 wrote to memory of 2568	2876	cmd.exe	reg.exe
PID 2876 wrote to memory of 2568	2876	cmd.exe	reg.exe
PID 2876 wrote to memory of 2568	2876	cmd.exe	reg.exe
PID 2924 wrote to memory of 2684	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	mcsft.exe
PID 2924 wrote to memory of 2684	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	mcsft.exe
PID 2924 wrote to memory of 2684	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	mcsft.exe
PID 2924 wrote to memory of 2684	2924	2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe
PID 2684 wrote to memory of 2544	2684	mcsft.exe	mcsft.exe

C:\Users\Admin\AppData\Local\Temp\2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe
"C:\Users\Admin\AppData\Local\Temp\2eaa11604d593c1f1a7493f0e9d5e0523c156b5c53c5dccd6c5e2f925309cd2a.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2924

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\lIXfW.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:2876

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:2568

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
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2684

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:2544

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lIXfW.bat
Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

Download Submit
C:\Users\Admin\AppData\Roaming\mcsft.exe
Filesize
576KB

MD5
fbede359be9d473035e51f4ab9b01063

SHA1
825ea8c1af75179d4b9b555061f4a7f4de67c89b

SHA256
c095b30b9458a0739d6534aab7c30b9105c660bb8a3a84d7d7c3af02c48c5089

SHA512
039a7f8adc6aa9d1f3b832510ad835252f889f149532299013f7c2c756edab17859f4c3c4415d9e52f503df7c0632827a9d7af6904362a9cb180a8ea0b96b479

Download Submit
memory/2544-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-79-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-51-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-54-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-77-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-76-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-75-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-66-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2684-46-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2684-55-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2924-0-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2924-65-0x0000000003940000-0x0000000003D08000-memory.dmp

Filesize
3.8MB

Download
memory/2924-45-0x0000000003940000-0x0000000003D08000-memory.dmp

Filesize
3.8MB

Download
memory/2924-44-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads