darkcomet | 2ab0496f028ab7d556cf1bedb6d9c1f576652e6db08f1bf466f1a67483934851

Analysis

max time kernel
149s
max time network
141s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
07-05-2024 04:25

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General

Target

65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe
Size

592KB
MD5

65db97bc471b2c790aaabb6f4501d8b0
SHA1

91ec31524c2de7edd03e924bac0271fedeef384a
SHA256

2ab0496f028ab7d556cf1bedb6d9c1f576652e6db08f1bf466f1a67483934851
SHA512

7fa17eda802868a631ecaa89941673d6d9c2db472c3622b99d119c894bafa13bdb16cc31aeecffc15c7e3641eabfdda7cea1c85ed37046defeda916fa421620b
SSDEEP

12288:wcWRJxhIUKofd9S88itJsL6s8GwUF81yn0FI/6IC0XoSY:TW/xhIUKofSytJsL6HUP0OHC9

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

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:

Soundcrd.exe

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

Executes dropped EXE 3 IoCs

Processes:

Soundcrd.exeSoundcrd.exeSoundcrd.exe

pid	Process
2856	Soundcrd.exe
2544	Soundcrd.exe
2972	Soundcrd.exe

Loads dropped DLL 5 IoCs

Processes:

65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe

pid	Process
2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe
2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe
2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe
2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe
2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe

UPX packed file 25 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2844-0-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/files/0x0035000000016126-27.dat	upx
behavioral1/memory/2856-46-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2844-48-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2544-54-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-52-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-55-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-56-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-57-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2972-59-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2544-58-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2856-60-0x0000000000400000-0x00000000007EB000-memory.dmp	upx
behavioral1/memory/2972-64-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2972-63-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2544-62-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-67-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-66-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-69-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2972-70-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2544-73-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-77-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-81-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-85-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-89-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2544-93-0x0000000000400000-0x00000000004B5000-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-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\Mcrosoftt = "C:\\Users\\Admin\\AppData\\Roaming\\Soundcrd.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Soundcrd.exe

description	pid	Process	procid_target
PID 2856 set thread context of 2544	2856	Soundcrd.exe	32
PID 2856 set thread context of 2972	2856	Soundcrd.exe	33

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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:

Soundcrd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Soundcrd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	Soundcrd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

Soundcrd.exe

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

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

Soundcrd.exeSoundcrd.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2544	Soundcrd.exe
Token: SeSecurityPrivilege	2544	Soundcrd.exe
Token: SeTakeOwnershipPrivilege	2544	Soundcrd.exe
Token: SeLoadDriverPrivilege	2544	Soundcrd.exe
Token: SeSystemProfilePrivilege	2544	Soundcrd.exe
Token: SeSystemtimePrivilege	2544	Soundcrd.exe
Token: SeProfSingleProcessPrivilege	2544	Soundcrd.exe
Token: SeIncBasePriorityPrivilege	2544	Soundcrd.exe
Token: SeCreatePagefilePrivilege	2544	Soundcrd.exe
Token: SeBackupPrivilege	2544	Soundcrd.exe
Token: SeRestorePrivilege	2544	Soundcrd.exe
Token: SeShutdownPrivilege	2544	Soundcrd.exe
Token: SeDebugPrivilege	2544	Soundcrd.exe
Token: SeSystemEnvironmentPrivilege	2544	Soundcrd.exe
Token: SeChangeNotifyPrivilege	2544	Soundcrd.exe
Token: SeRemoteShutdownPrivilege	2544	Soundcrd.exe
Token: SeUndockPrivilege	2544	Soundcrd.exe
Token: SeManageVolumePrivilege	2544	Soundcrd.exe
Token: SeImpersonatePrivilege	2544	Soundcrd.exe
Token: SeCreateGlobalPrivilege	2544	Soundcrd.exe
Token: 33	2544	Soundcrd.exe
Token: 34	2544	Soundcrd.exe
Token: 35	2544	Soundcrd.exe
Token: SeDebugPrivilege	2972	Soundcrd.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

65db97bc471b2c790aaabb6f4501d8b0_NEAS.exeSoundcrd.exeSoundcrd.exe

pid	Process
2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe
2856	Soundcrd.exe
2972	Soundcrd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

65db97bc471b2c790aaabb6f4501d8b0_NEAS.execmd.exeSoundcrd.exe

description	pid	Process	procid_target
PID 2844 wrote to memory of 2688	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	28
PID 2844 wrote to memory of 2688	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	28
PID 2844 wrote to memory of 2688	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	28
PID 2844 wrote to memory of 2688	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	28
PID 2688 wrote to memory of 2708	2688	cmd.exe	30
PID 2688 wrote to memory of 2708	2688	cmd.exe	30
PID 2688 wrote to memory of 2708	2688	cmd.exe	30
PID 2688 wrote to memory of 2708	2688	cmd.exe	30
PID 2844 wrote to memory of 2856	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	31
PID 2844 wrote to memory of 2856	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	31
PID 2844 wrote to memory of 2856	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	31
PID 2844 wrote to memory of 2856	2844	65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe	31
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2544	2856	Soundcrd.exe	32
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33
PID 2856 wrote to memory of 2972	2856	Soundcrd.exe	33

C:\Users\Admin\AppData\Local\Temp\65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe
"C:\Users\Admin\AppData\Local\Temp\65db97bc471b2c790aaabb6f4501d8b0_NEAS.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\RMkLj.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2688
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Mcrosoftt" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Soundcrd.exe" /f
    3⤵
    - Adds Run key to start application
    PID:2708
- C:\Users\Admin\AppData\Roaming\Soundcrd.exe
  "C:\Users\Admin\AppData\Roaming\Soundcrd.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2856
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:2544
- - C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    C:\Users\Admin\AppData\Roaming\Soundcrd.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2972

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
139B

MD5
173bcce4810d4901872d0ef4f0bfea4e

SHA1
561b03fdfe68b6419fddf57f32e1aab9a6126a2f

SHA256
10ea37eceabbe80fe9814280b66b957636951dbeeed18a9b4d50a1d24a6f1d1d

SHA512
2401e0a5e3f7bf590a0767449da2249d09717e8c1cb71a7475e81d9615580001cfc38705cd1a5b4edc33f7df043bf195e28e4a5442a32bc879dffc6473bd545e

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

Filesize
592KB

MD5
8f4e6fcf3cfaa72a6a80173de24ff4fa

SHA1
6a8c2bb40191e0c8b49bdf8a790313c6d9c25601

SHA256
df5fc237e1c2b089270adc6ccdaf18f70c2f88e0ec07441595b727261d345b0f

SHA512
4847d6bd739159fea166c8346fd88bfd923676aca4ee979d35a34c5dcd71c07f7291409c826b1ab43913de39a25d74c7d6d2e2091ea283c7053d241e02e91cab

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

Filesize
724KB

Download
memory/2544-93-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

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

Filesize
724KB

Download
memory/2544-89-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-85-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-81-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

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

Filesize
724KB

Download
memory/2544-52-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2544-55-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

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

Filesize
724KB

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

Filesize
724KB

Download
memory/2544-77-0x0000000000400000-0x00000000004B5000-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/2544-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

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

Filesize
724KB

Download
memory/2844-43-0x0000000003940000-0x0000000003D2B000-memory.dmp

Filesize
3.9MB

Download
memory/2844-0-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2844-44-0x0000000003940000-0x0000000003D2B000-memory.dmp

Filesize
3.9MB

Download
memory/2844-45-0x0000000003940000-0x0000000003D2B000-memory.dmp

Filesize
3.9MB

Download
memory/2844-48-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2856-46-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2856-60-0x0000000000400000-0x00000000007EB000-memory.dmp

Filesize
3.9MB

Download
memory/2972-63-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2972-70-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2972-64-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2972-59-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download