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) 28 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1604-0-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
C:\Users\Admin\AppData\Roaming\mcsft.txt	UPX
behavioral2/memory/1604-29-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral2/memory/5048-32-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-35-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-39-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/1176-38-0x0000000000400000-0x00000000007C8000-memory.dmp	UPX
behavioral2/memory/5048-36-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-40-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-43-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-42-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-41-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-44-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-45-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-46-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-47-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-48-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-49-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-50-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-51-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-52-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-53-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-54-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-55-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-56-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-57-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-58-0x0000000000400000-0x00000000004B5000-memory.dmp	UPX
behavioral2/memory/5048-59-0x0000000000400000-0x00000000004B5000-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

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

T1012

System Information Discovery

T1082

Processes:

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe

Executes dropped EXE 2 IoCs

Processes:

mcsft.exemcsft.exe

pid process

1176 mcsft.exe
5048 mcsft.exe

pid	process
1176	mcsft.exe
5048	mcsft.exe

UPX packed file 28 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1604-0-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\mcsft.txt	upx
behavioral2/memory/1604-29-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral2/memory/5048-32-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-35-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-39-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1176-38-0x0000000000400000-0x00000000007C8000-memory.dmp	upx
behavioral2/memory/5048-36-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-40-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-43-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-42-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-41-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-44-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-45-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-47-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-49-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/5048-59-0x0000000000400000-0x00000000004B5000-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-1-5-21-2539840389-1261165778-1087677076-1000\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 1176 set thread context of 5048 1176 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 1176 set thread context of 5048	1176	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\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 24 IoCs

Processes:

mcsft.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	5048	mcsft.exe
Token: SeSecurityPrivilege	5048	mcsft.exe
Token: SeTakeOwnershipPrivilege	5048	mcsft.exe
Token: SeLoadDriverPrivilege	5048	mcsft.exe
Token: SeSystemProfilePrivilege	5048	mcsft.exe
Token: SeSystemtimePrivilege	5048	mcsft.exe
Token: SeProfSingleProcessPrivilege	5048	mcsft.exe
Token: SeIncBasePriorityPrivilege	5048	mcsft.exe
Token: SeCreatePagefilePrivilege	5048	mcsft.exe
Token: SeBackupPrivilege	5048	mcsft.exe
Token: SeRestorePrivilege	5048	mcsft.exe
Token: SeShutdownPrivilege	5048	mcsft.exe
Token: SeDebugPrivilege	5048	mcsft.exe
Token: SeSystemEnvironmentPrivilege	5048	mcsft.exe
Token: SeChangeNotifyPrivilege	5048	mcsft.exe
Token: SeRemoteShutdownPrivilege	5048	mcsft.exe
Token: SeUndockPrivilege	5048	mcsft.exe
Token: SeManageVolumePrivilege	5048	mcsft.exe
Token: SeImpersonatePrivilege	5048	mcsft.exe
Token: SeCreateGlobalPrivilege	5048	mcsft.exe
Token: 33	5048	mcsft.exe
Token: 34	5048	mcsft.exe
Token: 35	5048	mcsft.exe
Token: 36	5048	mcsft.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exemcsft.exemcsft.exe

pid process

1604 659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
1176 mcsft.exe
5048 mcsft.exe

pid	process
1604	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
1176	mcsft.exe
5048	mcsft.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.execmd.exemcsft.exe

description	pid	process	target process
PID 1604 wrote to memory of 4644	1604	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	cmd.exe
PID 1604 wrote to memory of 4644	1604	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	cmd.exe
PID 1604 wrote to memory of 4644	1604	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	cmd.exe
PID 4644 wrote to memory of 1336	4644	cmd.exe	reg.exe
PID 4644 wrote to memory of 1336	4644	cmd.exe	reg.exe
PID 4644 wrote to memory of 1336	4644	cmd.exe	reg.exe
PID 1604 wrote to memory of 1176	1604	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	mcsft.exe
PID 1604 wrote to memory of 1176	1604	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	mcsft.exe
PID 1604 wrote to memory of 1176	1604	659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe
PID 1176 wrote to memory of 5048	1176	mcsft.exe	mcsft.exe

C:\Users\Admin\AppData\Local\Temp\659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe
"C:\Users\Admin\AppData\Local\Temp\659dd6e2496712db5654e3fa91076a3b909770a1ae1a73575a8be87e8b6da322.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Axhgp.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:4644

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:1336

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:1176

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:5048

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

4

T1012

System Information Discovery

5

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\Axhgp.txt
Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

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

MD5
7d18699745549266fbb740cace158baf

SHA1
6ad276fdc186834f423a815b6247ab494330a583

SHA256
686f66db55131c544f72e70c0c8e9031d1cda75ac6587071574e38b8b5926b30

SHA512
d8e9668367cdd240cc1f1f1c2748b86e42c064db98a0b87c7e0e79c20956f2012c3382dea4ad4a1498b3f3b3039e17e0e65a6f48e41f828746b9c1ac3a11f1ef

Download Submit
memory/1176-38-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/1604-29-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/1604-0-0x0000000000400000-0x00000000007C8000-memory.dmp

Filesize
3.8MB

Download
memory/5048-45-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-47-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-35-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-36-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-40-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-43-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-42-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-41-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-44-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-32-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-46-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-39-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-48-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-49-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-50-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-51-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-52-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-54-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/5048-59-0x0000000000400000-0x00000000004B5000-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