darkcomet | 590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7

Analysis

max time kernel
150s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 22:35

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General

Target

590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
Size

589KB
MD5

feb3bbd1b1b556b513f1c7622129db35
SHA1

0180c1a39e58eef8b63264458713ae2a70743109
SHA256

590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7
SHA512

c2fa83ba464bbb6c81b3cac511176fdf010e3582b06f6481c1fcea50de9192a1b810ab918e09dfdfbd4a62d02ddf5f36395805c0b77aee11ff9082881c7f417a
SSDEEP

12288:9ffLtEIQIu7k5sscLsD5iZqHyscNExmj1NT5BzYQR8NxOz8Y5oSS:9fTOIQIu7k5DzvLxm5Bl8sC

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
2060	mcsft.exe
1860	mcsft.exe
1012	mcsft.exe

Loads dropped DLL 7 IoCs

pid	Process
1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
2060	mcsft.exe
2060	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-1-5-21-2039016743-699959520-214465309-1000\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 2060 set thread context of 1860	2060	mcsft.exe	32
PID 2060 set thread context of 1012	2060	mcsft.exe	33

UPX packed file 34 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1572-2-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/files/0x000800000001923e-27.dat	upx
behavioral1/memory/1860-64-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-63-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-61-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-60-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-59-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2060-51-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/1860-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1572-46-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/1012-65-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/1012-68-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/1012-69-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2060-71-0x0000000000400000-0x00000000007EA000-memory.dmp	upx
behavioral1/memory/1860-74-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-75-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1012-76-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/1860-78-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-80-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-82-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-84-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-86-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-88-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-90-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-92-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-94-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-96-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-98-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-100-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/1860-102-0x0000000000400000-0x00000000004B5000-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	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.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\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
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	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	1860	mcsft.exe
Token: SeSecurityPrivilege	1860	mcsft.exe
Token: SeTakeOwnershipPrivilege	1860	mcsft.exe
Token: SeLoadDriverPrivilege	1860	mcsft.exe
Token: SeSystemProfilePrivilege	1860	mcsft.exe
Token: SeSystemtimePrivilege	1860	mcsft.exe
Token: SeProfSingleProcessPrivilege	1860	mcsft.exe
Token: SeIncBasePriorityPrivilege	1860	mcsft.exe
Token: SeCreatePagefilePrivilege	1860	mcsft.exe
Token: SeBackupPrivilege	1860	mcsft.exe
Token: SeRestorePrivilege	1860	mcsft.exe
Token: SeShutdownPrivilege	1860	mcsft.exe
Token: SeDebugPrivilege	1860	mcsft.exe
Token: SeSystemEnvironmentPrivilege	1860	mcsft.exe
Token: SeChangeNotifyPrivilege	1860	mcsft.exe
Token: SeRemoteShutdownPrivilege	1860	mcsft.exe
Token: SeUndockPrivilege	1860	mcsft.exe
Token: SeManageVolumePrivilege	1860	mcsft.exe
Token: SeImpersonatePrivilege	1860	mcsft.exe
Token: SeCreateGlobalPrivilege	1860	mcsft.exe
Token: 33	1860	mcsft.exe
Token: 34	1860	mcsft.exe
Token: 35	1860	mcsft.exe
Token: SeDebugPrivilege	1012	mcsft.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
2060	mcsft.exe
1860	mcsft.exe
1012	mcsft.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 1496	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	28
PID 1572 wrote to memory of 1496	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	28
PID 1572 wrote to memory of 1496	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	28
PID 1572 wrote to memory of 1496	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	28
PID 1496 wrote to memory of 2088	1496	cmd.exe	30
PID 1496 wrote to memory of 2088	1496	cmd.exe	30
PID 1496 wrote to memory of 2088	1496	cmd.exe	30
PID 1496 wrote to memory of 2088	1496	cmd.exe	30
PID 1572 wrote to memory of 2060	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	31
PID 1572 wrote to memory of 2060	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	31
PID 1572 wrote to memory of 2060	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	31
PID 1572 wrote to memory of 2060	1572	590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe	31
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1860	2060	mcsft.exe	32
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33
PID 2060 wrote to memory of 1012	2060	mcsft.exe	33

C:\Users\Admin\AppData\Local\Temp\590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe
"C:\Users\Admin\AppData\Local\Temp\590df6fdad528c23590f0ff391995221d794ff1cb8a310edf71a274b1dd0b9b7.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1572
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\OzNrl.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1496
- - 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:2088
- 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:2060
- - 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:1860
- - 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:1012

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\OzNrl.bat

Filesize
135B

MD5
a5feca573884d76f559b996d45e8ad9a

SHA1
0e81a993f3af4e31d60653dc2513186f0495f1c8

SHA256
c98e20d46d6465febb5d29cfab51241521ea5d6cd621f5e18b9b7d6fbfac3f0f

SHA512
a9239648b5f15eac4d4151b6e1bdc81065eeaeb101404c2a0126f03bc87f1e6a57206bfa07a44379e9d3bba889e4497a9991ff41fb109099b01512df3dc3cbda

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

Filesize
589KB

MD5
788b15141c7fd2b0ffca9a96666e6098

SHA1
d8512372e06f46c33f83a473754c8df9432f880e

SHA256
a9be3826594c62be5e8173a2333b7888dfe4fba6105bce2bd1e745bb608ba21f

SHA512
92d15ab7abf3401b876ebbb530a1df13dd088190cca8f623cd1ef8ae14dc6cd1d75ec6e9815788ba7cfdc4f7afdc985c69bef5d31377081f7dc4d076fad905e7

Download Submit
memory/1012-76-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1012-69-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1012-68-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1012-65-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1572-46-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1572-44-0x0000000003A20000-0x0000000003E0A000-memory.dmp

Filesize
3.9MB

Download
memory/1572-43-0x0000000003A20000-0x0000000003E0A000-memory.dmp

Filesize
3.9MB

Download
memory/1572-2-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/1860-60-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-77-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-52-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-102-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-56-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-100-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-59-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-61-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-62-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-98-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-74-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-75-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-58-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-64-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-80-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-84-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-86-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-88-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-90-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-92-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-94-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1860-96-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2060-71-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download
memory/2060-55-0x0000000002C10000-0x0000000002FFA000-memory.dmp

Filesize
3.9MB

Download
memory/2060-51-0x0000000000400000-0x00000000007EA000-memory.dmp

Filesize
3.9MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads