darkcomet | 659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322

General

Target

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
Size

576KB
MD5

0e15cecaaca7ac6bd759d843e6250308
SHA1

bd8cc1af7c9fa3347ca25bb010490957a7e8852a
SHA256

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322
SHA512

318cf88c5e097d4a0cffb58440327dca8668ad3d5d06111ad336064f27ee9a2ae056973aa48084cda25248b077a2e9685b2748979d84f7f4438e2fb1fc555d24
SSDEEP

12288:+NWPkHlUkErBuxQ4uzi6d6dL/yiXLzeMdK6io8levy0FhVlpzkzDDoSS:+NWPkHlUfBgpuPdWzyuDTifgyWlt

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/2212-0-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
C:\Users\Admin\AppData\Roaming\mcsft.exe	UPX
behavioral1/memory/2212-48-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral1/memory/2744-46-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral1/memory/2840-56-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-55-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-53-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-65-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-64-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-63-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-62-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-61-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-60-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-59-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2744-58-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral1/memory/2840-66-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-67-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-68-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-69-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-70-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-71-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-72-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-73-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-74-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-75-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-76-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-77-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-78-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-79-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral1/memory/2840-80-0x0000000000400000-0x00000000004B5000-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

2744 mcsft.exe
2840 mcsft.exe

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

pid	process
2744	mcsft.exe
2840	mcsft.exe

Loads dropped DLL 6 IoCs

Processes:

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exemcsft.exe

pid	process
2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
2744	mcsft.exe

UPX packed file 30 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\mcsft.exe	upx
behavioral1/memory/2212-48-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2744-46-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2840-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-65-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2744-58-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral1/memory/2840-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-76-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-79-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-80-0x0000000000400000-0x00000000004B5000-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-1-5-21-268080393-3149932598-1824759070-1000\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 2744 set thread context of 2840 2744 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 2744 set thread context of 2840	2744	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 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
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	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	2840	mcsft.exe
Token: SeSecurityPrivilege	2840	mcsft.exe
Token: SeTakeOwnershipPrivilege	2840	mcsft.exe
Token: SeLoadDriverPrivilege	2840	mcsft.exe
Token: SeSystemProfilePrivilege	2840	mcsft.exe
Token: SeSystemtimePrivilege	2840	mcsft.exe
Token: SeProfSingleProcessPrivilege	2840	mcsft.exe
Token: SeIncBasePriorityPrivilege	2840	mcsft.exe
Token: SeCreatePagefilePrivilege	2840	mcsft.exe
Token: SeBackupPrivilege	2840	mcsft.exe
Token: SeRestorePrivilege	2840	mcsft.exe
Token: SeShutdownPrivilege	2840	mcsft.exe
Token: SeDebugPrivilege	2840	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2840	mcsft.exe
Token: SeChangeNotifyPrivilege	2840	mcsft.exe
Token: SeRemoteShutdownPrivilege	2840	mcsft.exe
Token: SeUndockPrivilege	2840	mcsft.exe
Token: SeManageVolumePrivilege	2840	mcsft.exe
Token: SeImpersonatePrivilege	2840	mcsft.exe
Token: SeCreateGlobalPrivilege	2840	mcsft.exe
Token: 33	2840	mcsft.exe
Token: 34	2840	mcsft.exe
Token: 35	2840	mcsft.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exemcsft.exemcsft.exe

pid process

2212 659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
2744 mcsft.exe
2840 mcsft.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.execmd.exemcsft.exe

description	pid	process	target process
PID 2212 wrote to memory of 2780	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	cmd.exe
PID 2212 wrote to memory of 2780	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	cmd.exe
PID 2212 wrote to memory of 2780	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	cmd.exe
PID 2212 wrote to memory of 2780	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	cmd.exe
PID 2780 wrote to memory of 2648	2780	cmd.exe	reg.exe
PID 2780 wrote to memory of 2648	2780	cmd.exe	reg.exe
PID 2780 wrote to memory of 2648	2780	cmd.exe	reg.exe
PID 2780 wrote to memory of 2648	2780	cmd.exe	reg.exe
PID 2212 wrote to memory of 2744	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	mcsft.exe
PID 2212 wrote to memory of 2744	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	mcsft.exe
PID 2212 wrote to memory of 2744	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	mcsft.exe
PID 2212 wrote to memory of 2744	2212	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe
PID 2744 wrote to memory of 2840	2744	mcsft.exe	mcsft.exe

C:\Users\Admin\AppData\Local\Temp\659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
"C:\Users\Admin\AppData\Local\Temp\659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2212

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\oeMkG.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:2780

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:2648

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:2744

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:2840

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

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

MD5
f9c750f0b0dd97118209ef908abd9635

SHA1
b2ce290d13a81de4843e2ac3b82323285768ed8f

SHA256
42800d224ebbd19127a02de869a258f0144c619e18b86559f8e199155855128e

SHA512
00a4ec0cdeaecd1893767322b6fb8b4c9bb5e6a04b489eb2ccba86dfb88202f43eaa66ccdb68991fe7afef6d63475f5785feda7070a71244c75355c1bdcc4aac

Download Submit
memory/2212-0-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2212-43-0x0000000003B60000-0x0000000003F28000-memory.dmp

Filesize
3.8MB

Download
memory/2212-48-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2212-45-0x0000000003B60000-0x0000000003F28000-memory.dmp

Filesize
3.8MB

Download
memory/2212-44-0x0000000003B60000-0x0000000003F28000-memory.dmp

Filesize
3.8MB

Download
memory/2744-46-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2744-58-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/2840-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-65-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-66-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-75-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-76-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-77-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-79-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-80-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads