darkcomet | 4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d

Analysis

max time kernel
150s
max time network
124s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02-01-2025 22:54

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General

Target

4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
Size

589KB
MD5

d3897ba54f556a71936e1028c40e092c
SHA1

4c2ffb75cea1c906eaff076406c4e917f21fd459
SHA256

4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d
SHA512

c8a20733d173fdce060b3baad8ee035b5cf1fee7a63ad6fb8cdb7f7bf5db3a50e12e17322581196e1b294bbb751c9cdeca6a1624f660bcae1d131cf938e106f0
SSDEEP

12288:9ffLtEIQIu7k5sscLsD5iZqHyscNExmj1NT5BzYQR8NxOz8Y5oSX:9fTOIQIu7k5DzvLxm5Bl8sH

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

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

Executes dropped EXE 3 IoCs

pid	Process
2360	mcsft.exe
2824	mcsft.exe
2840	mcsft.exe

Loads dropped DLL 6 IoCs

pid	Process
2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
2360	mcsft.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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 2 IoCs

description	pid	Process	procid_target
PID 2360 set thread context of 2824	2360	mcsft.exe	34
PID 2360 set thread context of 2840	2360	mcsft.exe	35

UPX packed file 34 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/files/0x0009000000016d3f-30.dat	upx
behavioral1/memory/2188-47-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2824-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-53-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-58-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2840-60-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2840-63-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2840-62-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2360-64-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/2824-68-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-70-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-72-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-71-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2840-76-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2824-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-79-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-81-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-83-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-85-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-87-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-89-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-91-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-93-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-95-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-97-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-99-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2824-101-0x0000000000400000-0x00000000004B5000-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 6 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
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	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

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

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2824	mcsft.exe
Token: SeSecurityPrivilege	2824	mcsft.exe
Token: SeTakeOwnershipPrivilege	2824	mcsft.exe
Token: SeLoadDriverPrivilege	2824	mcsft.exe
Token: SeSystemProfilePrivilege	2824	mcsft.exe
Token: SeSystemtimePrivilege	2824	mcsft.exe
Token: SeProfSingleProcessPrivilege	2824	mcsft.exe
Token: SeIncBasePriorityPrivilege	2824	mcsft.exe
Token: SeCreatePagefilePrivilege	2824	mcsft.exe
Token: SeBackupPrivilege	2824	mcsft.exe
Token: SeRestorePrivilege	2824	mcsft.exe
Token: SeShutdownPrivilege	2824	mcsft.exe
Token: SeDebugPrivilege	2824	mcsft.exe
Token: SeSystemEnvironmentPrivilege	2824	mcsft.exe
Token: SeChangeNotifyPrivilege	2824	mcsft.exe
Token: SeRemoteShutdownPrivilege	2824	mcsft.exe
Token: SeUndockPrivilege	2824	mcsft.exe
Token: SeManageVolumePrivilege	2824	mcsft.exe
Token: SeImpersonatePrivilege	2824	mcsft.exe
Token: SeCreateGlobalPrivilege	2824	mcsft.exe
Token: 33	2824	mcsft.exe
Token: 34	2824	mcsft.exe
Token: 35	2824	mcsft.exe
Token: SeDebugPrivilege	2840	mcsft.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
2360	mcsft.exe
2840	mcsft.exe
2824	mcsft.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2584	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	30
PID 2188 wrote to memory of 2584	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	30
PID 2188 wrote to memory of 2584	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	30
PID 2188 wrote to memory of 2584	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	30
PID 2584 wrote to memory of 2760	2584	cmd.exe	32
PID 2584 wrote to memory of 2760	2584	cmd.exe	32
PID 2584 wrote to memory of 2760	2584	cmd.exe	32
PID 2584 wrote to memory of 2760	2584	cmd.exe	32
PID 2188 wrote to memory of 2360	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	33
PID 2188 wrote to memory of 2360	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	33
PID 2188 wrote to memory of 2360	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	33
PID 2188 wrote to memory of 2360	2188	4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe	33
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2824	2360	mcsft.exe	34
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35
PID 2360 wrote to memory of 2840	2360	mcsft.exe	35

C:\Users\Admin\AppData\Local\Temp\4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe
"C:\Users\Admin\AppData\Local\Temp\4f26e70c7e309f54cb1b41511a649c04969d34048154278fe63749951edfbd7d.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\cKhDp.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2584
- - 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:2760
- 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:2360
- - 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:2824
- - C:\Users\Admin\AppData\Roaming\mcsft.exe
    C:\Users\Admin\AppData\Roaming\mcsft.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

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

Filesize
589KB

MD5
bea59374367264e1b13481cf75679763

SHA1
cf7aba88f9ce2e8f95466d9f26451b039f59dc60

SHA256
1b6c1292fbce91a8d9bb0d3e3e7269abb01c5d04398e4807d1c9b90d09e51d9c

SHA512
0b2ef9fbe88c20b25e22df4e2ef2c01ccd94a742c8853dad4b7044e42e3a97b3c7e0a176f5713b16f19a6387be9a30658f10b2fbae374691a4875842482a49ba

Download Submit
memory/2188-44-0x00000000033A0000-0x000000000378A000-memory.dmp

Filesize
3.9MB

Download
memory/2188-43-0x00000000033A0000-0x000000000378A000-memory.dmp

Filesize
3.9MB

Download
memory/2188-42-0x00000000033A0000-0x000000000378A000-memory.dmp

Filesize
3.9MB

Download
memory/2188-47-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2188-0-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2360-64-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2360-52-0x0000000002B00000-0x0000000002EEA000-memory.dmp

Filesize
3.9MB

Download
memory/2824-67-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-57-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-101-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-99-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-97-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-95-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-68-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-70-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-72-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-71-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-53-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-93-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-77-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-79-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-81-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-83-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-85-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-87-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-89-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2824-91-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2840-76-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2840-62-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2840-63-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2840-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2840-58-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads